[China Instrument Network Instrument Development] Recently, the Photonics Information and Energy Materials Research Center at the Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, has made significant progress in the field of pressure sensors. The research introduces ultra-sensitive piezoresistive pressure sensors with a broad dynamic range and low detection limit, tailored using a touchpoint-based design. The findings were published in the journal *ACS Applied Materials & Interfaces*. The first author of the paper is Chen Ming, an associate researcher at the Shenzhen Advanced Institute, while the corresponding authors include Li Wenjie, Zhong Guohua, and Yang Chunlei, a researcher from the same institute.
Microstructure pressure sensor sensing characteristics: (ab) Pressure sensor prepared with good mechanical flexibility (cd) different microstructures of pressure sensor sensing characteristics, wherein the "rough-rough" type sensor has ultra-high sensitivity and widest dynamic range (e) "rough-rough" type pressure sensor with good stability (f) "rough-rough" type pressure sensor response and recovery time
“Rough-rough†sensor applications: (ab) Sensors for detecting weak pressures with detection limits up to 0.36 Pa (cd) Sensors for health monitoring: Real-time monitoring of human body pulse (ef) sensors for intelligent robots: Real-time monitoring of slight swings of hanging table tennis
Flexible wearable pressure sensors are widely used in electronic skin, medical monitoring, and intelligent robotics. A high-performance wearable sensor should offer both high sensitivity and a wide measurement range with a low detection limit. However, traditional sensors often struggle to meet all these requirements simultaneously. To address this challenge, Yang Chunlei's research team developed a high-performance flexible pressure sensor using a contact polyimide modulation technique. The sensor features a microstructure composed of a flexible polyimide film, rough fork electrodes, and a polydimethylsiloxane (PDMS) film. It achieves a sensitivity of 259.32 kPaâ»Â¹ over a range of 0–2.5 kPa, with a maximum measurable range of 54 kPa and a response time of approximately 200 μs.
In terms of health monitoring, the sensor can accurately track human pulse signals. In the context of intelligent robotics, the sensor enables real-time detection of minor external pressures, allowing robots to respond quickly and efficiently. This breakthrough provides a promising solution for developing advanced pressure sensors and is expected to accelerate their application in biomedical devices, health monitoring systems, and artificial intelligence technologies.
The research was supported by the National Natural Science Foundation of China and the Shenzhen Basic Research Project.
(Original title: Shenzhen Advanced Institute has made new progress in the field of pressure sensors)Keep invoices, packing lists and shipping orders protected and securely attached to boxes and other containers throughout the shipping process
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