Two-Luminogen Hydrogel Chemosensor Detects Seafood Freshness by Changing Color
Written by AZoMMay 7 2021
A team of researchers from Germany and China has developed a novel artificial color-changing material that imitates the skin of a chameleon, through luminogens (molecules that cause crystals to glow) arranged into different core and shell layers of hydrogels rather than a single uniform matrix.
This image shows the color change of the “chameleon skin” hydrogel-based chemosensor in response to biogenic volatile amine vapors, which are a well-known indicator of fish and shrimp spoilage. Image Credit: Lu et al./Cell Reports Physical Science.
The results, recently published in the
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IMAGE: This image shows the color change of the chameleon skin hydrogel-based chemosensor in response to biogenic volatile amine vapors, which are a well known indicator of fish and shrimp spoilage.. view more
Credit: Lu et al./Cell Reports Physical Science
Scientists in China and Germany have designed an artificial color-changing material that mimics chameleon skin, with luminogens (molecules that make crystals glow) organized into different core and shell hydrogel layers instead of one uniform matrix. The findings, published May 6 in the journal
Cell Reports Physical Science, demonstrate that a two-luminogen hydrogel chemosensor developed with this design can detect seafood freshness by changing color in response to amine vapors released by microbes as fish spoils. The material may also be used to advance the development of stretchable electronics, dynamic camouflaging robots, and anticounterfeiting technologies.
Chameleon skin-inspired material changes color, can detect seafood freshness
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Researchers designed a chameleon skin-inspired material that changes colors in response to biogenic volatile anime vapors, an indicator of fish and shrimp spoilage. Photo by Lu et al./Cell Reports Physical Science
May 6 (UPI) Scientists have created a new type of synthetic skin that uses luminogens and a bilayer structure to artfully alter its color in response to the environment.
The new chameleon-like skin, described Thursday in the journal Cell Reports Physical Science, is designed to detect seafood freshness, but the technology could be used for a range of applications.
Small Generator Transforms Skin Heat Into Electrical Power for Wearable Devices
Scientists in China have developed new TEG that generates power from the heat given off by your skin.
This generator could power wearable devices in the future. (ð·: Yijie Liu)
With so many devices to keep track of, it s easy to forget to charge your wearable. But what if your skin could power your smartwatch? Thanks to a team in China, this could actually happen. Scientists have developed a small, flexible device that converts heat from human skin into electrical power. Publishing their research in
Cell Reports Physical Science, the team was able to power an LED light in real-time when worn on a wristband.
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VIDEO: This video shows the flexible TEG wristband converts heat emitted by skin into electric power and light up an LED. view more
Credit: Yijie Liu
Scientists in China have developed a small, flexible device that can convert heat emitted from human skin to electrical power. In their research, presented April 29 in the journal
Cell Reports Physical Science, the team showed that the device could power an LED light in real time when worn on a wristband. The findings suggest that body temperature could someday power wearable electronics such as fitness trackers.
The device is a thermoelectric generator (TEG) that uses temperature gradients to generate power. In this design, researchers use the difference between the warmer body temperature and the relatively cooler ambient environment to generate power.