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Hybrid wind–wave energy devices have attracted significant attention for their potential to efficiently harness marine energy while reducing construction costs. In this work, the hydrodynamic performance of an oscillating water column (OWC) device installed in an offshore wind turbine was investigated. A three-dimensional numerical model was developed based on computational fluid dynamics. The numerical predictions demonstrate good agreement with the corresponding experimental results. The effects of key factors, such as chamber diameter, chamber draft, and pneumatic damping, on the energy capture performance were analyzed. The variation patterns of the free surface elevation, the air pressure, and the capture width ratio were analyzed. Additionally, flow characteristics and vortex dynamics around the device were presented for better understanding the energy capture process of the hybrid device. The results reveal that a larger chamber diameter is beneficial for energy conversion, and the optimal chamber draft and pneumatic damping were identified. Furthermore, the operating performance of the optimized device under irregular wave conditions was predicted. [ABSTRACT FROM AUTHOR]

We have designed and built an improved system for combined Time-Domain Near-Infrared Spectroscopy (TD NIRS) and Diffuse Correlation Spectroscopy (DCS) measurements. The system features two independent channels, enabling TD NIRS and DCS acquisition at short and long source-detector distances to enhance depth sensitivity in layered tissues. Moreover, the device can operate at fast acquisition rates (up to 50 Hz) to monitor hemodynamic oscillations in biological tissues. An OEM (Original Equipment Manufacturer) TD NIRS device enables stable and robust acquisition of photon distribution of time-of-flight. For the DCS signals, the use of a time tagger and a software correlator allows us flexibility in post-processing. A user-friendly GUI controls TD NIRS data acquisition and online data analysis. We present results for the system characterization on calibrated tissue phantoms according to standardized protocols for performance assessment of TD NIRS and DCS devices. In-vivo measurements during rest and during vascular occlusions are also reported to validate the system in real settings. [ABSTRACT FROM AUTHOR]

A supercapattery is an advanced energy storage device with superior power and energy density compared to traditional supercapacitors and batteries. A facial and single-step hydrothermal method was adopted to synthesize the rGO/GQDs doped Fe-MOF nano-composites. The incorporation of the dopants into the host material was to improve the energy storage capacity and improve cyclic stability. The structural, morphological, and compositional analyses were conducted by employing X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and X-ray diffraction (XRD). Additionally, Brunauer–Emmett–Teller (BET) measurements were used to calculate the nanomaterial's surface area and pore size. Dunn's model was used to demonstrate the contributions of the capacitive and diffusive components of the asymmetric energy storage structure. Fe-MOF/rGO/GQDs have a higher specific capacity (1876 C/g) than pure Fe-MOF (705 C/g) at 1.0 A/g current density. The Fe-MOF/rGO/GQDs supercapattery retained 95% of its capacity after 5000 charging and discharging cycles to test the asymmetric device durability. The power and energy densities have been determined to be 1160 W/kg and 57 Wh/kg, respectively. Fe-MOF showed excellent electrocatalytic activity in the hydrogen evolution process (HER) with a declined Tafel slope of 47.27 mV/dec. The Fe-MOF/rGO/GQDs electrode exhibits the lowest overpotential of 278 mV at 10 mA cm−2 with a Tafel slope of roughly 49.2 mV dec−1 in its function as an oxygen evolution reaction (OER) catalyst. This research work provides a basis for improving the efficiency of energy storage technologies. [ABSTRACT FROM AUTHOR]

Hybrid wind–wave energy devices have attracted significant attention for their potential to efficiently harness marine energy while reducing construction costs. In this work, the hydrodynamic performance of an oscillating water column (OWC) device installed in an offshore wind turbine was investigated. A three-dimensional numerical model was developed based on computational fluid dynamics. The numerical predictions demonstrate good agreement with the corresponding experimental results. The effects of key factors, such as chamber diameter, chamber draft, and pneumatic damping, on the energy capture performance were analyzed. The variation patterns of the free surface elevation, the air pressure, and the capture width ratio were analyzed. Additionally, flow characteristics and vortex dynamics around the device were presented for better understanding the energy capture process of the hybrid device. The results reveal that a larger chamber diameter is beneficial for energy conversion, and the optimal chamber draft and pneumatic damping were identified. Furthermore, the operating performance of the optimized device under irregular wave conditions was predicted.

[Display omitted] Interfacing graphene with other low-dimensional material has gained attentions recently due to its potential to stimulate new physics and device innovations for optoelectronic and electronic applications. Here, we exploit a solution-processed approach to introduce colloidal quantum dot (CQD) to the bilayer graphene device. The magnetotransport properties of the graphene device is drastically altered due to the presence of the CQD potential, leading to the observation of AB-like oscillation in the quantum Hall regime and screening of the intervalley scattering. The anomalous magnetotransport behavior is attributed to the coulombic scattering introduced by the CQDs and is shown to be highly asymmetric depending on the polarity of the transport carriers. These results prove the potential of such flexible method for engineering microscopic scattering process and performance of the graphene device that may lead to intriguing device application in such hybrid system. [ABSTRACT FROM AUTHOR]

The main objective of this paper is to discuss the experimental validation of a tele-operation system for remote center-of-motion tasks, such as laparoscopic surgery. This validation is based on the use of an extra sensor placed on the master manipulator. The tele-operation system is composed of a new hybrid haptic device (nHH) intended to be used as a master manipulator controlling a collaborative robot, used as a slave surgical robot. The resolution of the forward kinematic model (FKM) of the master device is performed experimentally thanks to the use of an extra sensor. The IMU, as the extra sensor, is installed on the serial part of the nHH device to measure the orientation and is enabled to solve the FKM of the parallel part of the nHH device. The use of an extra sensor reduces the calculation time, improves the accuracy of the KFM, and makes it suitable for real-time applications. The preliminary validation of the force feedback in the nHH workspace is validated. Experiments were conducted on the master–slave platform to validate the proposed approach. The results are promising, which proves that the nHH device presents a suitable performance for the desired task. [ABSTRACT FROM AUTHOR]

All-inorganic perovskite CsPbBr3 is considered as a promising photoelectric material due to its high environmental stability and excellent photoelectric properties. Constructing low-dimension hybrid structures by combining CsPbBr3 with semiconductor materials have recently attracted particular attention because they may bring new functionalities or generate synergistic effects in optoelectronic devices. Herein, the high-quality 1D CdSe nanobelt (NB)/CsPbBr3 microwire (MW) photodetectors are designed first time, which exhibit excellent performance as integrating I on/I off ratio of 5.02 × 104, responsivity of 1.63 × 103 A/W, external quantum efficiency of 3.8 × 105% and detectivity up to 5.33 × 1012 Jones. These properties are all improved at least one order of magnitude compared to those of single CsPbBr3 photodetectors. Moreover, the response range is broadened from the 300–570 nm (the single CsPbBr3 device) to 300–740 nm (the hybrid photodetector). Then, the first-principles calculations are carried out to reveal the physical mechanism from the atomic scale. The remarkably improved optoelectronic properties are attributed to the high crystalline quality as well as unique band alignment of hybrid structure that facilitate the effective separation and transport of photogenerated carriers. These works indicate that 1D CdSe/CsPbBr3 hybrid devices have promising applications in building high-performance and broader spectral response photodetectors and other optoelectronic devices.

Introduction: Despite a high rate of success when performed in specialised centres, current techniques for thoraco-abdominal aortic repair are associated with serious complications. The problem of spinal cord ischaemia remains unsolved. Surgical technique: The new hybrid graft for thoraco-abdominal aortic repair was developed based on the frozen elephant trunk principle. The device consists of a proximal stent graft for transabdominal retrograde delivery to the descending thoracic aorta, combined with a distal six branched abdominal device for open aortic repair. An additional seventh branch is provided for possible lumbar artery re-implantation. Because the stent graft is implanted via a transabdominal approach, it avoids the need for thoracotomy and extracorporeal circulation. A 56 year old patient with Loeys–Dietz syndrome was placed in a supine position. The aorto-iliac axis was exposed via a midline transperitoneal approach. Following an end to side anastomosis of the iliac branch to the left common iliac artery, the stent graft portion was inserted into the thoracic aorta via the coeliac trunk ostium. After stent implantation and graft de-airing by needle puncture, retrograde blood flow to the abdominal aortic segment, and the lumbar and visceral arteries was established via the end to side iliac anastomosis creating an extra-anatomic bypass. Subsequently, the visceral and renal arteries were anastomosed to the branches. Finally, the aorta was opened and surgical graft attached via the collar. The reconstruction ended with end to end anastomoses of both common iliac arteries to the graft branches. Discussion: The first and successful implantation of the new Thoracoflo hybrid device via a novel surgical technique is reported, eliminating the need for thoracotomy and extracorporeal circulation for thoraco-abdominal aortic repair.

Proton exchange membrane fuel cells (PEMFCs) possess high energy and low power densities, while supercapacitors are characterized by high power and low energy densities. A hybrid PEMFC/supercapacitor device (HPSD) with high energy and power densities was proposed and fabricated for the first time using a reduced graphene oxide/Nafion/Pt electrode in this study. The reduced graphene oxide (rGO) was a capacitive material, and Pt was used as the electrocatalyst. Nafion ionomers adsorbed onto the rGO sheets surface and connected the rGO sheets and the electrolyte (Nafion membrane), thus increasing the utilization rate and specific capacitance of rGO. During the half-cell tests, the rGO/Nafion/Pt electrode exhibited better pulse discharge and galvanostatic discharge performance than the conventional Nafion/Pt electrode. Due to the unique synergy of electrochemical reaction current and capacitance current during the discharge process, the HPSD exhibited a higher power density (26.2 kW kg−1) than the PEMFC (23.9 kW kg−1). The energy density (12.7 kWh kg−1) exhibited by HPSD was close to that of the PEMFC (13.5 kWh kg−1). Therefore, the concept of HPSD is to create a new method for developing next-generation electrochemical devices with high energy and power densities. • A hybrid PEMFC/supercapacitor device (HPSD) was proposed and fabricated. • The HPSD possesses high energy (12.7 kWh kg−1) and power densities (26.2 kW kg−1). • The reduced graphene oxide/Nafion/Pt electrode was used to fabricated the HPSD. • Reduced graphene oxide (rGO) was capacitive material, and Pt was electrocatalyst. • Nafion ionomers could connect the rGO sheets and the electrolyte (Nafion membrane). [ABSTRACT FROM AUTHOR]

Wavelength Division Multiplexing (WDM) devices, as one of the core components of 5G fronthaul network, have developed rapidly in recent years. The fronthaul network has proposed new requirements for WDM devices, components and products. However, the technical requirements and test method standards of WDM devices for 5G fronthaul network are not clear. Through in-depth analysis of the problems encountered in the test of WDM devices, we propose a test method of 5G fronthaul WDM devices, and build the corresponding test system, which is compared with the manual test method. The results show that the proposed test method has 10 times more efficient than manual test method with good consistency.

Wavelength Division Multiplexing (WDM) devices, as one of the core components of 5G fronthaul network, have developed rapidly in recent years. The fronthaul network has proposed new requirements for WDM devices, components and products. However, the technical requirements and test method standards of WDM devices for 5G fronthaul network are not clear. Through in-depth analysis of the problems encountered in the test of WDM devices, we propose a test method of 5G fronthaul WDM devices, and build the corresponding test system, which is compared with the manual test method. The results show that the proposed test method has 10 times more efficient than manual test method with good consistency.

The main objective of this paper is to discuss the experimental validation of a tele-operation system for remote center-of-motion tasks, such as laparoscopic surgery. This validation is based on the use of an extra sensor placed on the master manipulator. The tele-operation system is composed of a new hybrid haptic device (nHH) intended to be used as a master manipulator controlling a collaborative robot, used as a slave surgical robot. The resolution of the forward kinematic model (FKM) of the master device is performed experimentally thanks to the use of an extra sensor. The IMU, as the extra sensor, is installed on the serial part of the nHH device to measure the orientation and is enabled to solve the FKM of the parallel part of the nHH device. The use of an extra sensor reduces the calculation time, improves the accuracy of the KFM, and makes it suitable for real-time applications. The preliminary validation of the force feedback in the nHH workspace is validated. Experiments were conducted on the master–slave platform to validate the proposed approach. The results are promising, which proves that the nHH device presents a suitable performance for the desired task.

Objective: Conventional hearing aids (HAs) and bone conduction devices have limitations in providing clear and audible sound in some cases and situations. The clinicians' primary purpose is to enhance audibility and intelligibility in hearing, offering a solution for users dissatisfied with current hearing technologies. This study proposes a novel hybrid system and investigates its performance compared to HAs., Methods: This pilot study compares the performance of a novel hybrid system with traditional HAs. Ten HA users underwent a prospective intra-subject study at a tertiary hearing center. Audiological tests measured unaided and aided thresholds across specific frequencies in two conditions (HAs and Hybrid system). Furthermore, subjective outcomes were assessed via a questionnaire on the perceptual consequences., Results: The patient's mean age was 36 years. The mean PTA4 values were 63.75, 40.74-, and 37.88-dB HL in the unaided, HA-aided, and Hybrid-aided groups, respectively. The speech reception thresholds varied significantly between the unaided and (i) aided using HA ( p  = 0.0009) and (ii) aided using the Hybrid solution ( p  = 0.0001). There is no significant variation between HA and Hybrid solutions ( p  < 0.4195). The mean SDS at 65 dB using the HA and Hybrid solution was 87% and 90%, respectively., Conclusion: The proposed Hybrid system, combining conventional air-conduction HAs with bone-conduction devices, offers promising improvements in sound quality and user satisfaction. Further studies are essential to fully understand the Hybrid system's capabilities and evaluate its ability to avoid the dissatisfaction that could result from HA in some instances., Level of Evidence: Prospective cohort study (Level 3)., Competing Interests: Anas Ibrahim and Yassin Abdelsamad work for MED‐EL only in scientific roles. The remaining authors declare no conflicts of interest., (© 2025 The Author(s). Laryngoscope Investigative Otolaryngology published by Wiley Periodicals LLC on behalf of The Triological Society.)

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In this study, we synthesized amorphous NiMoS 4 (NMS) on 3D Ni-foam (NF) using different synthesis routes, which resulting an enhanced electrochemical performance. Initially, the [MoS 4 ]2- anions and Ni2+ cations interlinked to produce active nucleation centers that subsequently facilitated the formation of primary particulate structures on NF. This created a uniform layer of 3D NiMoS 4 after 8 hours of hydrothermal reaction. The NMS demonstrated a high specific capacitance of 2603 F g–1 at a current density of 1 A g–1with minimal degradation over 10,000 cycles. The NMS//AC (activated carbon) hybrid supercapacitor also achieved impressive energy and power densities of 53.84 Wh kg–1 and 4263 W kg–1, respectively. These results highlight the potential of binder-free NMS sheets as high-performance positive electrodes in hybrid supercapacitors. • Amorphous NiMoS 4 synthesized on 3D current collector using various methods. • Primary particles aggregate perpendicular to substrate, forming NiMos4 sheets. • Hydrothermal synthesis of NiMoS 4 results in a specific capacitance of 2603 F g–1. • hybrid supercapacitors showed energy density of 52.84 Wh kg–1 at 4263 W kg–1. [ABSTRACT FROM AUTHOR]

Summary: A supercapattery is a device that combines the benefits of supercapacitors' superior power density and cycle stability with the advantages of batteries' higher energy density. We used a simple hydrothermal method to synthesize nickel sulfide (NiS), silver sulfide (Ag2S), and nickel silver sulfide (NiAg2S). The NiS and Ag2S were combined in the best 50/50 weight ratio and found that the specific capacity for NiAg2S is 571.2 C/g which is higher as compared to individual NiS and Ag2S 305.2 C/g and 364 C/g, respectively. Even at 2 A/g, more than 69% of the specific capacity is retained. For asymmetric device fabrication (NiAg2S//AC), the activated carbon was selected as a negative electrode, while NiAg2S was chosen as a positive electrode. A specific capacity of 130.4 C/g was achieved with this device. Energy density for NiAg2S was observed to be 28.97 Wh/kg having a power density of 640 W/kg. To investigate stability, a durability test was performed by subjecting this device to 1000 charging/discharging cycles, which maintain 86% of the initial capacity. Our findings suggest that a mixture of nickel and silver sulfide having a 50/50 weight ratio functioning as an electrode material for supercapattery applications may be more appropriate. [ABSTRACT FROM AUTHOR]

Hybrid energy storage devices unifying the effect of both batteries (high specific energy) and capacitors (high specific power) have emerged in recent years due to their admirable cyclic stability and charge storage capability. Considerable amount of research has been conducted to optimize the electrode materials capable of showing good electrochemical characteristics. Here, we report the influence of interfacial layer of Ag and Cu on the electrochemical performance of cobalt phosphate electrode. Sputtering of Ag and Cu has been amalgamated to improve the interfacial properties of the current collector. After initial structural and morphological study, detailed electrochemical characterizations have been employed for Ni/Ag/Co 3 (PO 4) 2 and Ni/Cu/Co 3 (PO 4) 2 have been investigated by utilizing various characterizations. Hybrid device was fabricated using the combination Ni/Ag/Co 3 (PO 4) 2 since, Ag possess impressive electrochemical characteristics and electrical conductivity. The fabricated device has achieved the energy density of 65.8 Whkg−1 and power density of 6012 Wkg-1 along with the 85.6% retention after 1000 GCD cycles showing the device is stable enough. These results make the hybrid device a potential candidate for supercapattery applications. [ABSTRACT FROM AUTHOR]

This work reports an extensive study of the effect of the SiC polytypes substrate on the electrical properties of heterostructures based on SiC and polyaniline (PANI) employing current–voltage (I–V), capacitance–voltage (C–V) and deep-level transient spectroscopy (DLTS) techniques. Two different SiC substrates, namely 4H-SiC and 6H-SiC, have been investigated. The I–V results revealed that the rectification ratio (IF/IR), turn-on voltage (Von) and barrier height (ϕbo) of PANI/4H-SiC hybrid device are higher than those for PANI/6H-SiC heterojunctions. The C–V measurements illustrated that the built-in potential (Vbi) of PANI deposited on 4H-SiC is greater than that of the PANI sample fabricated on 6H-SiC. Furthermore, the DLTS results showed that the energy of electrically active traps present at/close and away from the interface in devices based on the 4H-SiC substrate is lower than those of 6H-SiC substrates, corroborating with I–V results. [ABSTRACT FROM AUTHOR]

The energy crisis and environmental pollution from excessive use of traditional fossil fuel have been prompting a number of researchers and institutes to develop new technology, emerging mat-erials, and potential applications for green, sustainable and renewable power source. There is a rich source of energy in the environment and therefore it is very promising to collect energy from the envir-onment. The mechanical energy can be transformed into electric energy when the piezoelectric material experiences mechanical deformation due to the transfer of internal electron. Therefore, as a potential sustainable, green energy source, piezoelectric nanogenerator has received extensive attention in rec-ent years. Some research achievements in recent years were reviewed in this paper, starting from the classification of piezoelectric materials and combining with their preparation methods, structure and properties. The effects of different preparation methods and structures on piezoelectric properties of piezoelectric nano-generators were evaluated in detail. The future development was also prospected.

Advanced cervical cancer treated with tandem and ovoids intracavitary/interstitial brachytherapy. Material and methods: FIGO stage IB1-IIIB locally advanced cervical cancer treated with intracavitary/interstitial brachytherapy via a tandem and ovoids hybrid applicator were analyzed. Median high-risk clinical target volume (HR-CTV), rate of tumor volume reduction, EQD2 D90, organ at risk doses, and outcomes were recorded. Univariable and multivariable Cox regression was applied for survival analysis, and logistic regression was used for toxicity analysis. Results: Seventy-one patients were identified. Median follow-up was 24.9 months, with a 2-year local control of 83.6%, loco-regional control of 72.0%, and overall survival of 88.6%. Median HR-CTV D90 was 87.4 Gy (IQR = 85.7-90.2). Median HR-CTV D90 > 90 Gy10 showed a trend toward improved local control (LC) (p = 0.19). Median HR-CTV was 37.9 cm3, and median V100 was 86.5%. A median HR-CTV of = 40 cm3 demonstrated worse loco-regional control (LRC) (p = 0.018) and progression-free survival (p = 0.021). Two-year LC and LRC for stage IIB patients with a median HR-CTV < 40 cm3 were significantly improved as compared to = 40 cm3 at 100% and 71.8%, respectively (p = 0.019) and 100% and 56.5%, respectively (p = 0.001). However, this trend was not statistically significant for stage IIIB patients. Higher percent per day reduction in HR-CTV during brachytherapy showed improved LRC (p = 0.045). Four percent of patients experienced acute grade 3 genitourinary toxicity, 1% late grade 3 genitourinary and 1% late grade 3 gastrointestinal toxicity. Conclusions: Tandem and ovoids intracavitary/interstitial brachytherapy provides satisfactory outcomes with modest toxicity. Higher HR-CTV D90 coverage demonstrated a trend toward improved tumor control. Tumor volume based on median HR-CTV = 40 cm3 at brachytherapy was prognostic for poor outcomes, even within initial FIGO stage groups warranting caution. [ABSTRACT FROM AUTHOR]

This paper reports the fabrication and electrical characterization of hybrid organic-inorganic solar cell based on the deposition of polyaniline (PANI) on n-type GaAs substrate with three different crystal orientations namely Au/PANI/(100) n-GaAs/(Ni-Au), Au/PANI/(110) n-GaAs/(Ni-Au), and Au/PANI/(311)B n-GaAs/(Ni-Au) using spin coating technique. The effect of crystallographic orientation of n-GaAs on solar cell efficiency of the hybrid solar cell devices has been studied utilizing current density-voltage (J-V) measurements under illumination conditions. Additionally, the influence of planes of n-GaAs on the diode parameters of the same devices has been investigated by employing current-voltage (I-V) characteristics in the dark conditions at room temperature. The experimental observations showed that the best performance was obtained for solar cells fabricated with the structure of Au/PANI/(311)B n-GaAs/(Ni-Au). The open-circuit voltage (Voc), short circuit current density (Jsc), and solar cell efficiency () of the same device were shown the values of 342 mV, 0.294 mAcm-2, 0.0196%, respectively under illuminated condition. All the solar cell characteristics were carried out under standard AM 1.5 at room temperature. Also, diode parameters of PANI/(311)B n-GaAs heterostructures were calculated from the dark I-V measurements revealed the lower reverse saturation current (Io) of 3.0×10-9A, higher barrier height () of 0.79 eV and lower ideality factor (n) of 3.16.

Supercapattery is the combination of battery and supercapacitor, which has the benefits of both devices like high power density, cycle stability, and greater energy density. Using a simple hydrothermal method, we synthesized zinc sulfide (ZnS), copper sulfide (CuS), and zinc copper sulfide (ZnCuS). The Zn 0.25 Cu 0.75 S@rGO nanocomposite electrode exhibited excellent electrochemical results, functioning at 1.4 A/g in a three-electrode assembly with an extraordinary specific capacitance of 2935 F/g. Brunauer-Emmett-Teller (BET) measurements and electrochemical impedance spectroscopy (EIS) studies show the improvement in surface area and electrochemical properties of the material. The hybrid device (Zn 0.25 Cu 0.75 S@rGO//AC) showed an extraordinary specific capacity of 150 C/g at 1.2 A/g with P b of 2800 W/kg and E d of 36.6 Wh/Kg. The supercapattery device exhibited an outstanding cyclic stability of 91 %. Our findings show that Zn 0.25 Cu 0.75 S@rGO is more suitable for storage devices as an electrode material. • Zn 0.25 Cu 0.75 S@rGO nanocomposite was synthesized using the hydrothermal method. • rGOmaterials is studied to estimate the electrochemical characteristics. • An outstanding specific capacity of 150 C/g at 1.2 A/g is obtained. • The outstanding value of Ed of 38.6 Wh/kg and Pd of 2800 W/kg are achieved. • The supercapattery device exhibited an outstanding cyclic stability of 91 %. [ABSTRACT FROM AUTHOR]

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Abstract Introduction Transverse mandibular deficiency has been traditionally managed by orthodontic compensation. However, without resolving the underlying skeletal hypoplasia it leads to high relapse rates. Few studies have reviewed the long-term experience and potential complications of mandibular symphyseal distraction osteogenesis (MSDO) as an alternative treatment method. Materials and method A retrospective review of 20 patients (range: 4–19 years; mean: 11.9 years) treated with a hybrid MSDO device over the period of 1996–2017 was conducted. Epidemiological data, medical and dental history as well as photographic and cephalometric analyses were carried out. Furthermore, pre-operative and long-term post-operative status including dental occlusion and tooth-jaw discrepancies were recorded. Results The distraction amount ranged from 3 mm to 15 mm (mean: 10 mm) with an average distraction period of 30.9 days. In long-term follow-up (mean: 7.3 years), 14 patients presented a class I and 6 patients presented a class II relationship. Correction of overjet, tooth jaw discrepancy and arch length discrepancy were obtained in 18, 20 and 17 cases respectively. A device malfunction was experienced in 6 patients. Conclusion Mandibular widening using a hybrid MSDO device can be efficiently and safely performed in a paediatric population. Further studies confirming our results and analysing facial aesthetic outcomes are warranted. [ABSTRACT FROM AUTHOR]

The review article is focused on developments in optical devices, other than laryngoscopes, in airway management and tracheal intubation. It brings information on advantages and limitations in their use, compares different devices, and summarizes benefits in various clinical settings. Supraglottic airway devices may be used as a conduit for fiberscope-guided tracheal intubation mainly as a rescue plan in the scenario of difficult or failed laryngoscopy. Some of these devices offer the possibility of direct endotracheal tube placement. Hybrid devices combine the features of two different intubating tools. Rigid and semi-rigid optical stylets represent another option in airway management. They offer benefits in restricted mouth opening and may be used also for retromolar intubation. Awake flexible fiberoptic intubation has been a gold standard in predicted difficult laryngoscopy for decades. Modern flexible bronchoscopes used in anesthesia and intensive care are disposable devices and contain optical lenses instead of fibers. Endotracheal tubes with an incorporated optics are used mainly in thoracic anesthesia for lung separation. They are available in double-lumen and single-lumen versions. They offer a benefit of direct view to the carina and do not require flexible fiberscope for their correct placement.

White LED is widely used for large‐area displays and lighting. Here we fabricated the white LED using red and green perovskite quantum dots and blue organic materials. The maximum efficiency of this hybrid white LED device was 2.1 cd/A and has a color coordinate of (0.32, 0.27) which is very close to the required white coordinate of (0.33, 0.33) based on the CIE 1931 color coordinate. [ABSTRACT FROM AUTHOR]

[Display omitted] • NiCo 2 S 4 /CoC (NCS/CC) was prepared on carbon-derived polyethyleneimine. • PEI functioned as a carbon template, forming NCS/CC on a carbon matrix (C-NCS/CC). • C-NCS/CC revealed a capacity/capacitance of 970F g−1 (427.5C g−1) at 1 A/g. • C-NCS/CC//AC asymmetric device exhibited specific energy of 28 Wh kg−1 at 1 A/g. Due to the development and production of new materials in the field of supercapacitors (SCs), which have a considerable capacity to store energy, they have become a pressing and indispensable matter in daily life. In this work, the nickel cobalt sulfide/cobalt carbide (NCS/CC) composite is uniformly distributed on the surface of carbon-derived polyethyleneimine (PEI), acting as a template, forming NCS/CC on a carbon matrix (C-NCS/CC). C-NCS/CC was synthesized using a solvothermal approach with PEI as a carbon source, followed by calcination at 400 °C for two hours in the air, and finally by a hydrothermal technique with Na 2 S as a sulfur source. C-NCS/CC has unique electrochemical energy storage property due to its good conductivity and specialized surface area that facilitates ion transportation. The prepared electrode material, C-NCS/CC, was utilized for SCs, and demonstrated an excellent capacitance of 970 F g−1 (427.5 C g−1) at 1 A g−1. For practical application, a C-NCS/CC//activated carbon (AC) asymmetric device was fabricated using a C-NCS/CC as a positive electrode and commercial AC as a negative electrode. The device displayed a remarkable specific energy of 28 Wh kg−1 at a specific power of 1105 W kg−1 and a current density of 1 A g−1, satisfying capacity retention of 87 % after 5000 cycles, and achieving a coulombic efficiency of 100 %. [ABSTRACT FROM AUTHOR]

[Display omitted] • ZnO supported CuFe 2 O 4 NC was fabricated by facile co-precipitation method. • Zn-CFO-1 NC delivers the high specific capacity of 409.7 C/g at 10 mV/s. • Zn-CFO-1 NC demonstrated the cyclic stability of 86.2% after 6000 cycles. • Zn-CFO-1//AC SCD delivered the superior energy density of 17.8 Wh/kg. Developing magnetic nanomaterials with exceptional electrochemical activities is the cutting edge in the fields of advanced supercapacitor applications. Herein, the binary copper ferrite nanocomposite has been prepared by a cost-effective co-precipitation method and their electrochemical activity has been enhanced by incorporating the different molar concentrations of zinc oxide nanoparticles in its lattice. Zinc oxide incorporated copper ferrite nanocomposite (Zn-CFO-1 NC) electrode delivers the maximum specific capacity of about 409.7 C/g at the sweep rate of 10 mV/s. The charge storage mechanism has been revealed by the Trasatti method, delivering the total, outer, and inner capacities of Zn-CFO-1 of 826.4, 41.0, and 784.4 C/g respectively along with the diffusion and capacitive contributions of 95% and 5% correspondingly. The supercapacitor device (SCD) has been fabricated by Zn-CFO-1 as cathode and activated carbon (AC) anode in 3 M KOH as an electrolytic medium, which provides the maximum energy density of about 17.8 Wh/kg and their maximum power density of about 3125 W/kg. [ABSTRACT FROM AUTHOR]

Peptide nucleic acid (PNA) is a synthetic DNA mimic that outperforms the properties of traditional oligonucleotides (ONs). On account of its outstanding features, such as remarkable binding affinity towards complementary DNA or RNA as well as high thermal and chemical stability, PNA has been proposed as a valuable alternative to the ON probe in gene-sensor design. In this study, a hybrid transducer made-up of graphene oxide (GO) nano-sheets covalently grafted onto a porous silicon (PSi) matrix has been investigated for the early detection of a genetic cardiac disorder, the Brugada syndrome (BS). A functionalization strategy towards the realization of a potential PNA-based device is described. A PNA, able to detect the SCN5A gene associated with the BS, has been properly synthesized and used as a bioprobe for the realization of a proof-of-concept label-free optical PNA-biosensor. PSi reflectance and GO photoluminescence signals were simultaneously exploited for the monitoring of the device functionalization and response.

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Highlights • NiMnO 3 -rGO nanocomposite were synthesized via a facile hydrothermal route followed by a thermal treatment. • The effect of hybridization was electrochemically investigated on energy storage performance of the material. • NiMnO 3 -rGO nanocomposite exhibited a high capacity of 91 mAh g−1. • The nanocomposite demonstrated a high energy density of ∼24 Wh kg−1 in integration with rGO. Abstract Demand for more efficient and ecofriendly energy storage systems arouse research efforts in seeking to develop new energy materials with promising properties. In this regard, mixed transition metal oxides have recently attracted great attention due to their improved electrochemical and electrical properties in comparison with simple oxides. Herein, NiMnO 3 and their composites with reduced graphene oxide (NiMnO 3 -rGO) were synthesized via a facile hydrothermal route, followed by a thermal treatment and their electrochemical properties have been evaluated as electrode materials for hybrid energy storage devices. The prepared samples were characterized by using X-ray diffraction (XRD), Raman spectroscopy, Thermogravimetric analysis (TGA), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and N 2 adsorption measurements. The energy storage behavior of the samples was investigated using different electrochemical techniques including cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy. Accordingly, a NiMnO 3 -rGO nanocomposite showed a high capacity of 91 mAh g−1 at a scan rate of 5 mV s−1, 48% higher than that of the pure NiMnO 3 sample (47.7 mAh g−1). Furthermore, this nanocomposite was integrated as a positive electrode with reduced graphene oxide nanosheets as the negative electrode in an aqueous hybrid energy storage device. This system displayed a high specific energy of 23.5 Wh kg−1 and a maximum specific power of 7.64 kW kg−1. [ABSTRACT FROM AUTHOR]

Abstract Birnessite-type MnO 2 synthesized on the surface of carbon nanotubes (CNTs) via facile hydrothermal reflux technique to produce MnO 2 -CNT nanocomposite and 3D microporous nanostructured activated carbon (AC) derived from cork (Quercus Suber) with good microstructural, morphological and electrochemical properties are herein reported. A hybrid supercapacitor device comprising of MnO 2 -CNT nanocomposite as positive electrode and AC as the negative electrode was successfully fabricated and tested for energy storage application. The device displayed a maximum working potential of up to 2 V due to the excellent synergistic contribution from the MnO 2 -CNT nanocomposite and AC material derived from cork (Quercus Suber). The fabricated device displayed good electrochemical performance having an energy density of ∼25 Wh Kg−1 that corresponds to a power density of 500 W Kg−1 at a current density of 0.5 A g−1 in a 1 M Li 2 SO 4 aqueous neutral electrolyte. The device exhibited an excellent stability of ∼100% coulombic efficiency after 10,000 charge-discharge cycles and excellent capacitance retention after potentiostatic floating test for 60 h. Graphical abstract Image Highlights • Birnessite-type manganese oxide decorated on uncapped carbon nanotubes was synthesized via facile. • Activated carbon (AC) was derived from a cork (Quercus Suber). • A hybrid device was successfully fabricated using MnO 2 -CNT as the positive electrode and AC as negative electrode. • The electrode materials exhibited good electrochemical performance. [ABSTRACT FROM AUTHOR]

Abstract We demonstrate a facile and controllable synthesis of horn-like Co 3 O 4 nanostructures through a solvothermal process followed by calcination at different temperatures. The particle sizes and defects of the as-obtained Co 3 O 4 nanohorns are controlled with respect to calcining temperatures, while preserving the horn-like morphology. In particular, the Co 3 O 4 nanohorn electrodes prepared at 300 °C reveal the specific capacitance of ∼2751 F g−1 and the rate capability of 46.8%, which is greater than those of materials obtained at 350, 400, and 450 °C. In order to enlarge the potential window, a hybrid supercapacitor is configured with the Co 3 O 4 nanohorn and activated carbon used as positive and negative electrodes, respectively. The as-fabricated hybrid supercapacitor shows high specific capacitance of ∼101 F g−1 and the rate capability of 80.5%. The energy and power densities of hybrid supercapacitor are ∼31.70 W h kg−1 and 16.71 kW kg−1, respectively, along with 91.37% of capacitance retention over 350,000 cycles. These energy and power densities of the hybrid supercapacitors are approximately 8.5 and 3.5 times greater than values of Co 3 O 4 symmetric supercapacitor. Graphical abstract Image 1 Highlights • Nanohorn-like Co 3 O 4 architectures are synthesized. • The high specific capacitance of 2751 F g−1 is obtained at the optimized temperature. • Energy density of hybrid supercapacitor is ∼31.70 W h kg−1. • Capacitance retention is 91.37% over 350,000 charge-discharge cycles. [ABSTRACT FROM AUTHOR]

Abstract Hybrid anodes with Li 4 Ti 5 O 12 nanoparticles uniformly embedding in a mesoporous activated carbon matrix are prepared by CO 2 activation of copolymerized resorcinol and hexamethylenetetramine loaded by lithium acetate and tetrabutyl titanate. The Li 4 Ti 5 O 12 /activated-carbon hybrid anodes show increased capacity retention as the activated carbon content in the composite increases, although their overall specific capacity decreases gradually. The hybrid anode with an activated-carbon content of 54 wt% exhibits the highest capacity retention of 67% at 4 A g−1 referencing to that at 0.1 A g−1. When coupling it with commercial AC cathode, the Li-ion capacitor displays an outstanding high energy density of 38 Wh kg−1 even at a high power density of 7964 W kg−1. Moreover, an energy density retention of 90.8% after 2000 cycles at 1 A g−1 is preserved, demonstrating its very stable cycle performance. The results reported in this work indicate that the Li 4 Ti 5 O 12 /activated-carbon hybrids prepared by the proposed copolymerization and post-activation process may be very promising anode materials of Li-ion capacitors designed for high power applications. Highlights • LTO-AC hybrid anodes were prepared by copolymerization and post-activation process. • LTO nanoparticles embedded in mesoporous AC matrix uniformly. • The LTO-AC hybrid anodes exhibited excellent rate capability and cycle performance. • High energy density of 38 Wh kg−1 was achieved at 7964 w kg−1. [ABSTRACT FROM AUTHOR]

Abstract We report on the research related to integration and characterization of AlGaN/GaN heterostructure-based circular high electron mobility transistors (c-HEMTs) with diamond thin films. Prior to diamond deposition the transistors were coated by thin SiN x layer in order to protect AlGaN/GaN heterostructure from deposition process impact. The diamond thin film was selectively grown on the top of SiN x -coated c-HEMTs using low-pressure low-temperature microwave plasma deposition equipment with substrate table 20 × 30 cm2 from C/O/H gas mixture. We demonstrate the functionality of the diamond/SiN x -coated and the SiN x -coated AlGaN/GaN-based c-HEMTs in the temperature range from room temperature to 500 °C. The electrical measurements revealed increase of c-HEMTs' leakage currents at reversed gate voltages after diamond deposition, although the transistors remained operable in the tested temperature range. The increase of gate leakage currents and thus more negative pinch-off voltages were attributed to hydrogen penetrated towards AlGaN/GaN interface during the 60 h deposition process despite the SiN x protection. The influence of temperature rise on electronic properties of the diamond/SiN x -coated and the SiN x -coated AlGaN/GaN-based c-HEMTs is discussed. Graphical abstract Unlabelled Image Highlights • Diamond film is selectively grown on AlGaN/GaN heterostructure based circular HEMTs. • Intermediate SiN x layer protection was used in the low-pressure low-temperature CVD. • Diamond-covered c-HEMTs were capable to operate from room temperature to 500 °C. • The positive effect of diamond is more significant at high bias load of V GS. • The heat sink role of diamond cover is weakened at temperatures above 300 °C. [ABSTRACT FROM AUTHOR]

Multidimensional CoMoO 4 @Ni(OH) 2 nanocomposite materials are fabricated on the nickel modified surface and channels of an ordered macro-porous electrode plate (OMEP) by a multistep high temperature hydrothermal method as the supercapacitor electrode in a high power density energy storage device. The effects, morphology, capacitive properties, and formation mechanism of the CoMoO 4 @Ni(OH) 2 composite materials are systematically investigated. Compared to nanostructured nickel grown on the OMEP or CoMoO 4 @Ni(OH) 2 on nickel plate with the same area, the CoMoO 4 @Ni(OH) 2 /OMEP shows enhanced electrochemical energy storage properties such as high energy capacitance of 8.55 F cm −2 (1812.42 F g −1 ) at 2 mA cm −2 and good cycling stability of 87.42% capacity retention after 5000 cycles. An asymmetrical supercapacitor (ASC) device is assembled with a polyethylene (PE) membrane, CoMoO 4 @Ni(OH) 2 /OMEP, and active carbon covered nickel foam. The ASC with the CoMoO 4 @Ni(OH) 2 /OMEP has an energy density of 9.66 Wh Kg −1 even at a power density of 3000 W Kg −1 as well as stable power characteristics with 86.5% retention after 10,000 cycles at a current of 0.06 A. The device produces large instantaneous power after charging at 2.8 V for 10 s one ASC can power a 5 mm red LED with high efficiency. [ABSTRACT FROM AUTHOR]

Hybrid supercapacitors, which combine a capacitive negative electrode and a faradaic positive electrode operating in an aqueous media, have many potential applications such as frequency regulation on the electrical grid, in particular when used in conjunction with intermittent energy sources. The purpose of this work is to study alternative designs to the aforementioned hybrid devices, by using composite materials which combine faradaic and capacitive contributions in the same electrode in order to maximize both energy and power densities. Cu 2 O:graphene composite materials have been synthesized using a simple precipitation technique in order to improve the energy of capacitive graphene-based negative electrode materials. Cuprous oxide (Cu 2 O) has been chosen due to its high theoretical capacity of 375 mAh.g −1 associated with an active electrochemical window in the range −0.85 V to −0.20 V vs Hg/HgO (1 M KOH), thus being a potential candidate to serve as a negative electrode to combine with the known carbon/Ni(OH) 2 positive electrode in internal hybridized cell. An interesting initial capacity of more than 275 mAh g −1  has been obtained for the Cu 2 O:graphene composite material when cycled in a 6 M KOH solution at 0.1 mV s −1 , despite a progressive fading of the specific capacity upon cycling. [ABSTRACT FROM AUTHOR]

Mixed transition metal oxides have attracted great attention due to their improved properties over simple oxides in energy storage applications. Herein, we report facile hydrothermal synthesis of novel porous NiCoMn ternary metal oxide flakes with reduced graphene oxide (NCMO_rGO) and their application in high performance aqueous-based energy storage devices. The effect of reaction time on composition and morphology was studied by X-ray diffraction, Raman spectroscopy, thermal gravimetric analysis, transmission electron microscopy, and N 2 ad/de-sorption measurements. Accordingly, a high specific surface area of 200 m 2  g −1 was achieved for the optimized sample. The sample was electrochemically investigated by cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopy. Porous NCMO_rGO hybrid exhibited a high capacity of 115 mAh·g −1 at 1 A g −1 . Subsequent integration of the hybrid material as a positive electrode with rGO negative electrodes resulted in asymmetric aqueous devices having a specific energy as high as 27 Wh·kg −1 . Moreover, this NCMO_rGO//rGO hybrid device showed an excellent cycling stability of 96% over 2000 cycles. This work not only reports for the first time the rational design and fabrication of porous NCMO_rGO nanoflakes as high performance electrodes for energy storage but also paves the path towards facile synthesis of mixed metal oxide nanocomposites for other applications. [ABSTRACT FROM AUTHOR]

Ocean energy is one of the most promising clean and renewable natural energy sources, however, owing to traditional energy harvesting technology, the collection and utilization of ocean energy is extremely limited. In this work, a hybridized ocean wave nanogenerator (How-NG) based on honeycomb-like three electrodes has been proposed, which consists of a triboelectric nanogenerator (TENG) and an electromagnetic generator (EMG), where the TENG works in both in-plane sliding mode and vertical contact-separation mode. With innovative design in electrode structure and hybrid of TENG and EMG, the How-NG can harvest two types of wave energy, kinetic energy and potential energy of ocean surface wave. The honeycomb-like three electrode structure is designed to harvest wave energy in multi-angle range for random waves. In addition, by adjusting the weight of the magnet to achieve different resonance parameters, the How-NG could reach a resonant state and more efficient collection of ocean energy. Furthermore, the influence of the working frequency and sliding displacement on the electrical outputs of the TENG unit and EMG unit are investigated systematically. The maximum output energy of TENG and maximum power of EMG can reach 21.7 µJ and 8.23 µW respectively at fixed working frequency of 4.0 Hz and sliding displacement of 3.5 cm. In addition, those two basic units are assembled vertically into a sealed cylinder acrylic shell which is used to drive LEDs by harvesting the water wave energy. This work presents a novel and efficient approach toward large-scale blue energy harvesting from the ocean. [ABSTRACT FROM AUTHOR]

A novel, efficient and cost-effective sandwich-like Ni(OH) 2 /MoS 2 nanocomposites (NMCs) is designed and fabricated as an anode for supercapacitors, where a MoS 2 nanoplate grows on the two sides of porous Ni(OH) 2 nanosheets. The NMCs samples exhibited high electrochemical performance in aqueous electrolyte due to the synergistic effect between porous Ni(OH) 2 nanosheets and MoS 2 nanoplates. Compared with pure Ni(OH) 2 and MoS 2 , the optimum NMC8 (the mass ratio of Ni(OH) 2 and MoS 2 is 8:1) electrode materials displays a 28.12% and 396.30% improved specific capacitance and enhanced long-cycle stability respectively for electrochemical energy storage. The optimum NMC8 shows high specific capacitance of 201 mA h g −1 at the scan rate of 5 mV s −1 and with 83.21% retention after 3000 charge-discharge cycles at a high current density of 20 A g −1 , indicating a superior rate capability and outstanding properties. Moreover, the assembled NMC8//graphene asymmetric two-electrode device shows a high energy density of 57.27 W h kg −1 at the power density of 750 W kg −1 . [ABSTRACT FROM AUTHOR]