The hottest band aid sensor can be attached to the

2022-08-18
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"Band aid" sensor can be affixed to the skin to monitor health status

release date: Source: Xinhua

wearable devices that can monitor health status, such as smart watches and smart glasses, are becoming more and more popular. A "band aid" sensor newly developed by researchers at Stanford University in the United States can be completely fitted to the skin to monitor heartbeat and respiration. It is lighter and smaller than previous devices. The paper has been published in the journal Nature electronics in the UK on a good or bad day

when this "band aid" sensor is attached to the wrist or abdomen of the test object, it can monitor people's pulse and breathing by detecting the extension and contraction of the skin

this sensor sticker called "Bodynet" is composed of a small sensor with a diameter of several millimeters and a radio frequency identification antenna pasted on a flexible substrate, which can extend with the skin. The receiver with battery fixed on the clothes can provide wireless power for the sticker. After receiving the skin signal read by the sticker, the receiver will upload the signal to intelligent terminals via Bluetooth

According to Bao Zhenan, the corresponding author of the paper and a professor in the Department of chemical engineering at Stanford University, the biggest challenge is that the sensor antenna may deform with human motion, affecting signal transmission and reception. To this end, researchers used silk printing technology to print metal ink on the rubber sticker substrate to form a flexible antenna, and developed a new radio frequency identification system, so that the antenna can also transmit stronger and more accurate signals when it fluctuates with the skin

"we hope that the sensor is like a light and thin small sticker, which can be pasted wherever we want. For example, when measuring the heart index, it is pasted on the wrist or chest; when measuring the hand and foot movements, it is pasted on the shoulder or leg." Bao Zhenan said. She hopes that users can freely choose the way of health monitoring, which is as non-invasive as bandages. Due to the low cost of sensor stickers, users can use multiple stickers to monitor different parts and throw them away after use

Bao Zhenan said that the existing sensors are still relatively simple, mainly detecting tension, temperature, pressure, etc. the laboratory is committed to developing sensor stickers that can detect sweat, other secretions and other chemical information to provide more health information. In the future, this kind of sensor "band aid" is expected to be the first time that researchers at University College London conceptualize the overall method of laboratory cell culture and first use it to provide medical monitoring for patients with sleep disorders or heart disease

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