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Education in Hong Kong
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Hong Kong scientist’s tiny breakthrough promises big rewards

Invention by Polytechnic University scientist could revolutionise nanotechnology – yet finding enough talent in the city is proving harder than securing funding

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Professor Wallace Leung won a gold medal at the International Exhibition of Inventions in Geneva. Photo: Xiaomei Chen
Raymond Cheng

A Hong Kong scientist has invented a nanotechnology that could greatly improve performance in areas ranging from solar energy to environmental protection.

But Professor Wallace Leung Woon-fong said finding the right talent in Hong Kong was even more challenging than securing funding for his game-changing discovery.

“Our breakthrough is pure science which has many possible applications in many disciplines, because it helps to vastly improve the efficiency of conductivity, which means lowering the cost as well,” Leung, of Hong Kong Polytechnic University, said.

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“But it will have to be developed in combination with different disciplines, each with its own research and development, that is why we will be happy to work with other academic institutions or industries.”

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Leung’s breakthrough was to use very thin nano chemicals to improve the efficiency of nanofibre, a widely used semiconductor with a diameter less than 1/1,000 that of a human hair.

Nanofibres are used in solar cells, photocatalysts for cleaning the air and lithium batteries, but the material is inefficient. Leung’s solution was to add tiny slices of highly conductive graphene to form a nano-composite.

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