Flexible and Transparent Pressure Sensor Based on CNTs Film Microstructure

Abstract

In recent years, capacitive flexible pressure sensors have been widely studied in electronic skin and wearable devices. The traditional capacitive pressure sensor has a higher production cost due to micro-nano machining technology such as lithography. This paper presents a flexible transparent capacitive pressure sensor based on a PDMS/CNT composite electrode, simple, transparent, flexible, and arrays without lithography. The sensitivity of the device has been tested to 0.0018 kpa -1 with a detection range of 0-30 kPa. The sensor is capable of rapidly detecting different pressures and remains stable after 100 load-unload tests.

Optimization of microstructure design for enhanced sensing performance in flexible piezoresistive sensors

“…Hemispherical structures are commonly found in microstructural designs. For instance, Li [66] prepared conductive PDMS arrays featuring surface multilevel hemispherical structures. These were systematically aligned and packaged with fork-finger electrodes to create a flexible piezoresistive strain sensor.…”