Revolutionizing Wearable Devices: Soft Coating Keeps Cool

New Coating Reduces Heat from Wearable Devices

Scientists have created a coating that helps dissipate heat from wearable devices, reducing the risk of skin burns and extending device life.

Wearables in constant contact with the skin can generate uncomfortable levels of heat and even cause burns.

This flexible coating, designed by researchers at City University of Hong Kong, enables both radiative and non-radiative cooling without requiring electronic power.

By addressing the heat issue, this coating improves user comfort and safety in long-term healthcare monitoring and virtual and augmented reality applications.

Innovative Design for Effective Cooling

Wearable technologies hold great potential in the medical field for unobtrusive health monitoring.

However, heat generated by electronic devices can pose problems when in direct contact with the skin.

Overheating may damage sensitive devices and disrupt measurements, and excessive temperatures can cause skin burns.

The new soft coating, less than 1mm thick, incorporates microspheres and nanoparticles that enhance infrared radiation and solar reflection, respectively.

Revolutionary Solution for Comfortable Wearable Devices

Yu Xinge, one of the chief designers of the new coating, highlights the importance of thermal dissipation for maintaining sensing stability and a good user experience.

The ultrathin, soft, radiative-cooling interface made from dedicated photonic material provides a revolutionary solution for comfortable, long-term healthcare monitoring and virtual and augmented reality applications.

This breakthrough in wearable technology promises to revolutionize the industry, improving the functionality and comfort of devices for extended use.

Advantages over Previous Coatings

Previous attempts to reduce heat from wearable devices often resulted in bulky and rigid coatings that interfered with device functionality.

Additionally, these coatings primarily relied on non-radiative heat dissipation methods, neglecting the potential of radiative means such as thermal radiation from the wearable's surface.

The new soft coating combines titanium dioxide nanoparticles, fluorescent pigments, and silicon dioxide microspheres to enhance both radiative and non-radiative heat dissipation.

This advancement enables wearables to effectively manage heat while maintaining their functionality and user comfort.

Impressive Cooling Abilities

In tests, the soft coating demonstrated remarkable cooling abilities, reducing the surface temperature of an electronic resistor by 56°C with a coating thickness of just 600 μm.

Such cooling capabilities have the potential to significantly enhance the functionality, comfort, and safety of wearable devices.

As a result, wearables can become more suitable for long-term healthcare monitoring and virtual and augmented reality applications.

The coating's potential to improve user experience and device performance makes it a game-changer for the wearable technology industry.

The study on the new soft coating for wearable technologies was published in the journal Science Advances, paving the way for advanced thermal management in skin electronics.

This breakthrough has the potential to revolutionize the wearable technology industry, making devices more user-friendly and safe for long-term use.

Future research and development in this field could lead to even more innovative solutions for cooling wearable devices and enhancing their performance.

With ongoing advancements, wearables may become as magical as fantasy tales like 'Alice in Wonderland,' offering a seamless and comfortable user experience.


Conn Hastings. (July 25, 2023). Soft Coating Cools Wearable Devices.

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