A new health monitor bracelet that uses graphene sensors to enable measurement and tracking of vital signs has been developed.

“New technological devices are prioritizing non-invasive tracking of vital signs, not only for fitness monitoring, but also for the prevention of common health problems such as heart failure, hypertension and stress-related complications, among others.
 
Wearables based on optical detection mechanisms are proving an invaluable approach for reporting on our bodies inner workings and have experienced a large penetration into the consumer market in recent years.
 
Current wearable technologies, based on non-flexible components, do not deliver the desired accuracy and can only monitor a limited number of vital signs. To tackle this problem, conformable non-invasive optical-based sensors that can measure a broader set of vital signs are at the top of the end-users’ wish list.
 
In a recent study published in Science Advances, ICFO researchers have demonstrated a new class of flexible and transparent wearable devices that are conformable to the skin and can provide continuous and accurate measurements of multiple human vital signs.
 
These devices can measure heart rate, respiration rate and blood pulse oxygenation, as well as exposure to UV radiation from the sun. While the device measures the different parameters, the read-out is visualized and stored on a mobile phone interface connected to the wearable via Bluetooth. In addition, the device can operate battery-free since it is charged wirelessly through the phone.
 
The bracelet was fabricated in such a way that it adapts to the skin surface and provides continuous measurement during activity . The bracelet incorporates a flexible light sensor that can optically record the change in volume of blood vessels, due to the cardiac cycle, and then extract different vital signs such as heart rate, respiration rate and blood pulse oxygenation.
 
Secondly, the researchers report on the integration of a graphene health patch onto a mobile phone screen, which instantly measures and displays vital signs in real time when a user places one finger on the screen (see Figure 2). A unique feature of this prototype is that the device uses ambient light to operate, promoting low-power-consumption in these integrated wearables and thus, allowing a continuous monitoring of health markers over long periods of time.”

 
Read full article New health monitors are flexible, transparent and graphene enabled

Source: Tech Explore
Image: Flexible and transparent bracelet that uses graphene to measure heart rate, respiration rate and blood pulse oxygenation continuously for health monitor. Credit: ICFO

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