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Semiconducting nanomaterial for curves holds promise for Internet of Things and wearables, says Hong Kong-led team

  • Scientists say nanomesh can be made at much lower temperatures than existing semiconductors and on common materials such as paper and plastic
  • The researchers used tellurium, a semi-metallic element that can be mixed with other metals to form alloys

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The experiments conducted by the team showed multi-functional applications of tellurium nanomesh, which is formed from a network of nanowires. Photo: Handout
A team of Hong Kong-led scientists have developed a new way to produce a semiconducting nanomaterial that say can be made into sensors on curved surfaces to create safer infrastructure and advance flexible wearable electronics.
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They said the nanomesh – formed from a network of nanowires – could be manufactured at much lower temperatures than for existing semiconductors and grown on common materials such as plastic and paper, reducing production costs.

The team from City University of Hong Kong, the Changchun Institute of Optics, Fine Mechanics and Physics at the Chinese Academy of Sciences, the University of Electronic Science and Technology of China, Zhengzhou University, Beijing University of Technology and Kyushu University in Japan published their findings in the peer-reviewed journal Nature Communications in April.

Semiconductors are silicon-based devices made up of hundreds of millions, and in some cases billions, of transistors, which act as tiny “switches” to control the movement of electrons.

CityU’s research team (from left) Dr Alex Wong Chun-yuen, Professor Johnny Ho Chung-yin and Dr Meng You. Photo: Handout
CityU’s research team (from left) Dr Alex Wong Chun-yuen, Professor Johnny Ho Chung-yin and Dr Meng You. Photo: Handout

A semiconductor conducts electricity under some conditions but not others, making it a good medium to control electrical current. Most of the world’s semiconductors, also known as integrated circuits or microchips, are made from pure elements such as silicon extracted from sand.

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