2025-11-19 ペンシルベニア州立大学 (Penn State)
As a proof-of-concept test device, the team developed a wearable ring with an embedded, miniaturized accelerometer that captured and successfully communicated gesture-based movements over a network. Credit: Courtney Robinson / Penn State. Creative Commons
＜関連情報＞
- https://www.psu.edu/news/earth-and-mineral-sciences/story/shrinking-materials-hold-big-potential-smart-devices-researchers
- https://www.science.org/doi/10.1126/sciadv.aea8051
- https://advanced.onlinelibrary.wiley.com/doi/full/10.1002/advs.202405792
自立型および自由曲面上の3次元縮小電子機器 Three-dimensional shrinking electronics on freestanding and freeform curvilinear surfaces
Yangbo Yuan, Dongliang Chen, Jianyu Li, Bowen Li, […] , and Huanyu Cheng
Science Advances Published:8 Oct 2025
DOI:https://doi.org/10.1126/sciadv.aea8051
Abstract
Wearable electronics that adapt to three-dimensional (3D) surfaces are essential for next-generation smart internet of things (IoT), yet existing strategies remain limited because of fabrication complexity, material incompatibility, or poor structural control. Here, this work introduces a scalable yet versatile approach to design and fabricate 3D electronic systems by printing liquid metal patterns onto heat-shrinkable polymer substrates. Upon controlled thermal actuation, the 2D circuits transform into target 3D geometries with enhanced electrical performance. The resulting 3D shrinking electronics enable conformal antenna integration for IoT devices and gesture-interactive wearable interfaces. This low-cost, versatile platform offers a paradigm for customizable, shape-adaptive electronics in intelligent real and virtual environments.
様々な相を持つ液体金属をベースにした伸縮性摩擦電気ナノ発電機 Stretchable Triboelectric Nanogenerator Based on Liquid Metal with Varying Phases
Li Yang, Langang Guo, Zihan Wang, Chuizhou Meng, Jinrong Wu, Xue Chen, Abdullah Abu Musa, Xiaoqi Jiang, Huanyu Cheng
Advanced Science Published:13 August 2024
DOI:https://doi.org/10.1002/advs.202405792
Abstract
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.
