Wei‐Hsin Liao

A continuous spiral-spring triboelectric nanogenerator for energy harvesting and self-sensing under ultra-low-frequency rotation

Self-powered monitoring of slowly rotating components is hindered by the small relative speed and limited installation space available to conventional rotary triboelectric nanogenerators (TENGs). Here, a continuously driven unidirectional rotary TENG (CDUR-TENG) is developed by i...

Triggering high-energy orbits in rotational nonlinear energy harvesters via time-varying external excitation and internal parameter modulation

The nonlinear dynamics of rotational piezoelectric energy harvesters can enhance power output and broaden the operational bandwidth. However, their practical application is severely constrained by uncontrollable switching between the high-energy orbit (HEO) and low-energy orbit (...

Transcending the Space‐Bandwidth and Lighting Trade‐Offs: A Programmable Self‐Mixing Interferometry Imager for Cross‐Scale Surface Inspection

ABSTRACT Industrial optical inspection is fundamentally limited by the trade‐off between spatial bandwidth (field‐of‐view vs. resolution) and vulnerability to ambient lighting. This work addresses these challenges by proposing a programmable imager based on amplitude‐modulated la...