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    On-Skin Electronics For Providing Wearable Body Cooling

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    The device works on the same principle that is implemented for room cooling, thus bringing down body temperatures and eliminating the need for electricity-based air-conditioning

    An on-skin device designed by engineers at the University of Missouri can achieve around 11 degrees Fahrenheit of cooling to the human body. The device also includes numerous human health care applications such as the ability to monitor blood pressure, electrical activity of the heart and the level of skin hydration. (Image credit: https://news.missouri.edu)

    With rising temperatures making the lives of humans increasingly uncomfortable, especially those living and working for long hours under the sun, the chances of fatal medical conditions such as dehydration and elevated body temperature becomes quite prevalent in them.

    Now, a team of engineers from the University of Missouri have developed a flexible, body-monitoring electronics material that can be worn around certain body parts. Dubbed as “wearable air conditioner”, the on-skin device can effectively monitor blood pressure, skin hydration levels and electrical activity of the heart.

    “We believe this is one of the first demonstrations of this capability in the emerging field of on-skin electronics,” said corresponding author Zheng Yan, an assistant professor in the College of Engineering.

    Similar to passive cooling

    This breathable and waterproof device provides cooling to a human body through a process called passive cooling. Passive cooling is a method typically employed in buildings in which, soil and wind act as natural heat sinks by absorbing heat in the daytime and releasing it at night. Passive cooling requires no electrical equipment such as a fan or pump, which results in significant cost-saving.

    “Our (on-skin) device can reflect sunlight away from the human body to minimize heat absorption, while simultaneously allowing the body to dissipate body heat, thereby cooling the human body during the daytime hours,” said Yan.

    Beneficiaries

    Soldiers, whose duty demands them to stay vigilant for prolonged hours under extreme heat, could hugely benefit from this innovation.

    Similarly, athletes could effectively bring down their body temperatures after a gruelling physical activity and reduce the risk of injuries.

    Future plans

    As of now, the on-skin electronic device operates after being wired to a power source. Researchers intend to make it wireless in the future. They also hope that this technology will be successfully integrated into smart clothing.

    “Eventually, we would like to take this technology and apply it to the development of smart textiles,” Yan said. “That would allow for the device’s cooling capabilities to be delivered across the whole body. Right now, the cooling is only concentrated in a specific area where the patch is located. We believe this could potentially help reduce electricity usage and also help with global warming.”




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