Polymer substrate

About

A polymer substrate is a flexible, lightweight base material—typically made from plastics such as polyimide, polyethylene terephthalate, or PDMS—upon which electronic components, sensors, and functional devices are fabricated or mounted. Unlike rigid silicon or metal bases, polymer substrates can bend, stretch, and conform to curved surfaces, making them essential for developing flexible and wearable electronics. In robotics and AI, they serve as the foundation for soft robotic systems, electronic skin (e-skin), shape-sensing devices, and integrated power sources such as ultrathin photovoltaic arrays. Engineers use polymer substrates to embed fiber Bragg grating sensors in continuum robots, print carbon nanotube-based strain sensors for 4D-printable structures, and fabricate temperature sensors for health monitoring applications. Their mechanical compliance, low weight, and compatibility with diverse manufacturing techniques—including direct ink writing and micropatterning of nanomaterials—make them critical enablers of next-generation robots that must safely interact with humans, navigate confined spaces, or operate with minimal onboard power.