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In the pursuit of low‐dose flat‐panel X‐ray detection and imaging, controlling dark current is pivotal. Modulating the bandgap and resistivity of photosensitive materials is one of the methods to reduce dark current. The study introduces a novel approach by first demonstrating a non‐perovskite orthorhombic phase δ‐CsPbI2Br thick film, fabricated using an innovative elastic molecular‐assisted coating strategy. This technique results in a material with an optimized bandgap of 2.30 eV and a significantly elevated resistivity of 2.42 × 10¹⁰ Ω cm. Consequently, this leads to an ultralow dark current of 1.34 nA cm⁻2. Leveraging this advancement, the developed X‐ray detectors showcase a groundbreaking low detection limit of 53 nGyair s⁻¹, surpassing the performance of their cubic‐phase counterparts. Remarkably, the material exhibits excellent phase stability, maintaining its properties for up to 80 days. By integrating with a thin‐film transistor array, a flat‐panel X‐ray detector that delivers high‐quality 8‐bit imaging across a 64 × 64 matrix is successfully engineered. This work not only presents a transformative approach to substantially reduce dark current in low‐dose X‐ray detection but also sets a new benchmark in the field by combining enhanced imaging capability with robust long‐term stability. [ABSTRACT FROM AUTHOR]

Skeletal muscle loss is a common clinical disease, whose long treatment period and expensive treatment costs bring a heavy burden to patients. Currently, the use of piezoelectric materials to generate in situ and efficient electrical stimulation has been proven to significantly promote wound healing and other defects. However, skeletal muscle requires repaired materials with high elastic deformation to accompany its reciprocating movement during the healing process. Therefore, developing biocompatible materials that combine high piezoelectricity and stretchability is a great challenge. In the present work, a piezoelectric elastomer PPBE is prepared by copolymerization of bio‐based diacid and diol. PPBE has matching elastic modulus with the skeletal muscle to accompanied proceed stretching and recovery movements. Piezoelectrical charge from PPBE scaffold under ultrasound and mechanical stimuli could promote myogenic differentiation via Ca2+ signaling pathway and modulate cell functions, resulting in improved muscle morphology and functional performance of skeletal muscle. Thus, development of the degradable PPBE scaffold would provide new therapy strategy for volumetric muscle loss (VML) and present great potential in repairing of other tissues. [ABSTRACT FROM AUTHOR]

In this paper, a self‐powered piezoelectric sensor is developed for pressure monitoring. Though molecular design and processing optimum of piezoelectric materials, the the accuracy of pressure sensing was significantly improved, and the sphygmic signal of the human body can be detected. In particular, the prepared sensor is capable to be integrated under flexible OLED display to realize sphygmic signal detection. Thus, a new under‐screen flexible OLED health sensing device is realized. [ABSTRACT FROM AUTHOR]

The highly miniaturized and integrated electronic devices have demanded contactless current sensors with scale miniaturization, structure flexibility, self‐powering and heat resistance. Herein, a novel magnetoelectric current sensor (MCS) based on polylactide/VB2 composites and FeCoV is prepared using in‐situ coating and poling‐free methods. The use of polylactide/VB2 composite makes the MCS self‐powered and heat resistant, and the use of FeCoV makes the MCS highly flexible. The in‐situ coating and poling‐free methods endow the polylactide/VB2 composite and FeCoV good interfacial coupling. As a result, the MCS possesses good linearity over 0.999 and high sensitivity of 0.64 mV/A to the external current, even at a high temperature of 120 °C. Besides, the MCS presents high durability after 200 000 cycles. The MCS with mini size, self‐powering, heat resistance, high flexibility and durability has great potential in safety monitoring of electronic devices fields. [ABSTRACT FROM AUTHOR]

ABSTRACT Polylactide (PLA) derived from natural sources has attracted increasing interest and has provided a promising alternative to traditional plastics derived from petroleum sources. With no loss of environmental friendly features, PLA was highly toughened by Eucommia ulmoides gum (EUG) derived from Eucommia ulmoides oliv. The dynamic mechanical analysis, scanning electron microscopy (SEM), and differential scanning calorimetry results show that the PLA-EUG blends were immiscible systems. SEM micrographs revealed that EUG particles were well dispersed in the PLA matrix with number-average particle diameters of 2-4 μm. The mechanical properties indicated that the tensile strength decreased with increasing EUG contents, but the elongation at break and the impact strength were enhanced. The notched impact strength of the blends improved by 5.9-fold compared to that of neat PLA. The PLA-EUG blends exhibited distinct shear-thinning behavior; this indicated good processability, and the storage modulus and loss modulus of the PLA-EUG blends increased with EUG content. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46017. [ABSTRACT FROM AUTHOR]

This communication describes photoresponsive gels, prepared using ring-opening metathesis polymerization (ROMP), that dissolve upon irradiation with ultraviolet light. Exposure of mixtures of norbornene-type ROMP monomers and new photoreactive cross-linkers comprising two norbornene units bound through a chain containing o-nitrobenzyl esters (NBEs) to well-known ruthenium carbene catalysts gave cross-linked polymer networks that swelled in organic solvents or water depending on the structure of the monomer. These gels became homogeneous upon irradiation with UV light, consistent with breaking of the cross-links through photolysis of the NBE groups. The irradiation time required for homogenization of the gels depended on the cross-link density and the structure of the photoresponsive cross-linker. [ABSTRACT FROM AUTHOR]

FeCoV, flexible current sensors, heat resistance of magnetoelectric current sensors, polylactide Keywords: FeCoV; flexible current sensors; heat resistance of magnetoelectric current sensors; polylactide EN FeCoV flexible current sensors heat resistance of magnetoelectric current sensors polylactide 1 1 1 03/25/22 20220322 NES 220322 B Magnetoelectric Current Sensor b In article number 2102048, Na Yi, Xiaoran Hu, Wei Lin, and co-workers propose a novel magnetoelectric current sensor (MCS) based on polylactide/VB SB 2 sb composites and FeCoV. Current Detection and Energy Harvesting Integrated Magnetoelectric Sensor with Flexibility and Heat Resistance Based on Polylactide/VB2 Composites and FeCoV (Adv. [Extracted from the article]