An improved capacitance pressure sensor with a novel electrode design

Mechano-Optical Response Behavior of Polymer-Dispersed Cholesteric Liquid Crystals for Reversible and Highly Sensitive Force Recorders

“…To address these needs, mechanical sensors which reversibly or permanently change their signals as a response to mechanical stimuli (pressure/impact/force) are good candidates. Commercial mechanical sensors are generally based on electrical properties − (piezoresistivity, piezoelectricity, or capacitance) or optical signals , (e.g., fiber optic sensors). In addition, mechanochromic sensors which exhibit visible optical response upon mechanical actions have recently attracted great attention due to their vivid color display and zero energy consumption. − Some efforts have been devoted to incorporating sensitive elements (e.g., triboluminescence, photoluminescence) into a polymer either covalently or noncovalently. ,, Upon mechanical activation, such mechanochromic materials can change their reflection or absorption properties. , Such sensors are sensitive, reversible, and real-time.…”