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http://dx.doi.org/10.1097/ACM.0000000000005041 | DOI Listing |
ACS Sens
September 2025
Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China.
Accurate strain monitoring in environments with coexisting mechanical deformation and temperature fluctuations─such as solid rocket propellants, battery enclosures, and human ligaments─remains a longstanding challenge for flexible electronics. Conventional strain sensors suffer from significant thermal drift due to the intrinsic temperature dependence of their sensing materials, limiting their reliability in wireless and implantable applications. Here, we report an intrinsically temperature-insensitive, highly sensitive, wireless flexible strain sensor based on near-field communication technology.
View Article and Find Full Text PDFMicromachines (Basel)
August 2025
School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024, China.
For ultra-low-frequency vibration applications, this study focuses on a piezoelectric energy harvesting system with a spring mass system, utilizing magnetic plucking to up-convert the frequency. The proposed spring mass system includes a spring, a magnet mass with a guide rail, and a fixed pulley. The spring mass system responds to external ultra-low-frequency excitation and transfers the vibration to the piezoelectric cantilever beam through the magnets, achieving frequency up-conversion.
View Article and Find Full Text PDFSensors (Basel)
August 2025
School of Aerospace Engineering, Xiamen University, Xiamen 361005, China.
Aerospace engines and hypersonic vehicles, among other high-temperature components, often operate in environments characterized by temperatures exceeding 1000 °C and high-speed airflow impacts, resulting in severe thermal erosion conditions. Coaxial thermocouples (CTs), with their unique self-eroding characteristic, are particularly well suited for use in such extreme environments. However, fabricating high-temperature electrical insulation layers for coaxial thermocouples remains challenging.
View Article and Find Full Text PDFBioinspir Biomim
September 2025
Carbon Neutrality Research Group, University of Southampton Malaysia, 79100 Iskandar Puteri, Johor, Malaysia.
Nature has remained one of the key sources of inspiration for human technology. While striking for higher efficiency, design improvements in power-generating turbines have started to reach a saturation point. Biomimicry- learning from nature, has great potential for significant performance improvements.
View Article and Find Full Text PDFSoft Robot
August 2025
Shandong Key Laboratory of Intelligent Sensing Chip and System, Qingdao, China.
Throughout the development of soft robots, shape memory alloy (SMA) actuators have received considerable attention due to their inherent advantages, such as high power-to-weight ratio, low driving voltage, and high response speed. This study presents a lattice-reinforced SMA actuator with improved response speed and increased deformation range. The SMA wires are used to drive the actuator to achieve bending, while the high elastic wire's elasticity is used to achieve recovery.
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