The sensor provides simple to fabricate and deploy (attaches like a bandage), stretchable, flexible and conforming (amplifies and improves pulse signal). Also it is biocompatible.
Stanford Reference: 14-024
Stanford researchers have developed a wearable, flexible, high sensitivity pressure sensor that provides information about cardiovascular health, emotional state, and other aspects of human physiology. Attached like a medical bandage, the ultra-thin sensor measures pulse waveforms over arteries or veins with high repeatability (> 3000 cycles). Bio-inspired microstructures enhance the skin-device interface and amplify the signals of physical forces.
In proof of concept, researchers applied the sensors on the skin over arterial or venous sites to measure pulse waveforms. The waveforms provide important cardiovascular information for healthcare monitoring. Integrated into a simple, portable transmitter and receiver, the device can quickly diagnose cardiovascular and cardiac illnesses.
Stanford docket S14-211 Self-Powered Electronic Skin
Stanford’s stretchable, energy harvesting electronic skin (e-skin) senses and distinguishes between normal pressure, tension, and bending. This human skin-like capability allows object manipulation, grasp control, and texture determination without needing external power.
Stanford docket 15-225 Electrochromic Resistive Pressure Sensor
Stanford researchers have developed a stretchable, low power consumption, highly-tunable resistive pressure sensor and organic electrochromic device (ECDs). This electronic skin device detects applied pressure and distinguishes varying applied pressures through real-time visible color change.
NPR "All Tech Considered" Feature
"Just Like Human Skin, This Plastic Sheet Can Sense And Heal", April 11, 2016
Pressure sensors with end user applications in:
Physiological / healthcare monitoring
Medical devices, especially cardiovascular
Simple to fabricate
Simple to deploy – attaches like a bandage
Stretchable, flexible and conforming – amplifies and improves pulse signal
High repeatability (> 3000 cycles)
C. Pang, J. H. Koo, A. Nguyen, J. M. Caves, M. G. Kim, A. Chortos, K. Kim, P. J. Wang, J. B.-H. Tok, Z. Bao, "Highly Skin-Conformal Microhairy Sensor for Pulse Signal Amplification". Advanced Materials, 27(4), pp.634-640.
Related Web Links
Bao Research Group
MEMS: bioMEMS sensors: biosensor materials: thin film healthcare: diagnostic tool medical devices: diagnostics and measurement Composite materials flexible electronics flexible sensors healthcare: non-invasive device materials: carbon nanotubes medical devices: prosthetics/rehabilitation organic semiconductor: devices organic semiconductor: materials organic semiconductors plastic electronics pressure sensors prosthetics surgical robotics Surgical tool medical devices: cardiovascular cardiovascular device