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Stretchable triboelectric nanogenerators (TENGs) represent a new class of energy-harvesting devices for powering wearable devices. However, most of them are associated with poor stretchability, low stability, and limited substrate material choices. This work presents the design and demonstration of highly stretchable and stable TENGs based on liquid metalel ectrodes with different phases. The conductive and fluidic properties of eutectic gallium-indium (EGaIn) in the serpentine microfluidic channel ensure the robust performance of the EGaIn-based TENG upon stretching over several hundred percent. The bi-phasic EGaIn (bGaIn) from oxidation lowers surface tension and increases adhesion for printing on diverse substrates with high output performance parameters. The optimization of the electrode shapes in the bGaIn-based TENGs can reduce the device footprint and weight, while enhancing stretchability. The applications of the EGaIn- and bGaIn-based TENG include smart elastic bands for human movement monitoring and smart carpets with integrated data transmission/processing modules for headcount monitoring/control. Combining the concept of origami in the paper-based bGaIn TENG can reduce the device footprint to improve output performance per unit area. The integration of bGaIn-TENG on a self-healing polymer substrate with corrosion resistance against acidic and alkaline solutions further facilitates its use in various challenging and extreme environments.

Modulating the charge‐transfer pathway is of great significance for boosting the photocatalytic efficiency of the catalysts. Herein, well‐ordered Al doping SrTiO3/TiO2 heterojunction nanorod arrays (Al‐STO/TiO2 HNRAs) via a two‐step hydrothermal protocol for efficient piezo‐photocatalysis are reported. The piezoelectric field generated by the internal polarization of Al‐STO/TiO2 HNRAs can be tailored by Al doping content, which could help to modulate the migration and separation of charge carriers. The doping of Al also makes the charge lifetime from 1.14 ns increased to 1.76 ns. Under the co‐excitation of ultrasonic and ultraviolet irradiation, the oxidation rate constant of Al‐STO/TiO2 HNRAs can reach 0.037 min−1 for the degradation of Rhodamine B molecules, which was 3.42 times higher than that of the un‐doping sample. The piezo‐potential distribution and charge migration within Al‐STO/TiO2 HNRAs were explored by piezoelectric force microscopy and COMSOL simulation. This work provides a promising solution toward modulating charge carrier migration for boosting photocatalytic activities with the assistance of mechanic vibration. [ABSTRACT FROM AUTHOR]

Water hyacinth ( Pontederia crassipes Mart.) is a monocotyledonous aquatic plant renowned for its rapid growth, extensive proliferation, biological invasiveness, and ecological resilience to variations in pH, nutrients, and temperature. The International Union for Conservation of Nature (IUCN) has listed P. crassipes among the top 100 invasive species. However, comprehensive genomic information, particularly concerning its mitochondrial genome (mitogenome), remains surprisingly limited. In this study, the complete mitogenome of P. crassipes was analyzed using bioinformatics approaches. The mitogenome is 399,263 bp long and contains 38 protein-coding genes (PCGs), 24 tRNA genes, and 3 rRNA genes. Sequence analysis revealed that the complete mitogenome of the species contains 3,289 dispersed repeats, and 765 RNA editing sites in protein-coding genes. The P. crassipes mitogenome possessed un-conserved structures, including extensive sequence transfer between its chloroplasts and mitochondria. Our study on the mitogenome of P. crassipes offers critical insights into its evolutionary patterns and phylogenetic relationships with related taxa. This research enhances our understanding of this invasive species, known for its significant biomass and rapid overgrowth in aquatic environments., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Hao, Jiang, Pan, Guo, Chen, Li, Liu, Guo, Luo and Jia.)

Sirtuin 6 (SIRT6) is an NAD + -dependent deacetylase belonging to the sirtuin family. It has been shown to participate in wound healing and some inflammation-related disorders. However, the effect of MDL-800, a highly efficient and selective SIRT6 activator, on wound healing and inflammation has not been reported. Therefore, this study investigated whether MDL-800 confers anti-inflammatory effects and promotes wound healing and uncovered the molecular mechanisms involved. This was achieved using mouse models of full-thickness wounds. Results showed that MDL-800 significantly downregulated inflammation by attenuating the release of inflammatory mediators and improved collagen deposition and neovascularization of wounds, thereby accelerating cutaneous wound healing. Furthermore, MDL-800 significantly downregulated expression levels of TNF- α and IL-6 in the dorsal skin tissue of mice via the NF- κ B pathway. These results demonstrated that MDL-800 exerted anti-inflammatory and prohealing effects, indicating that the SIRT6/NF- κ B/I κ B signaling pathway may play an important role in wound healing., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Xiaoqi Jiang et al.)