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Concave-convex Spoon / Spoon

Concave-convex Spoon

Have you ever been scalded when drinking? Concave-convex Spoon has solved this problem. According to the principle of expansion and contraction, the spoon will swell when the drinking temperature reaches a certain temperature. Thus, the spoon can’t hold soup and the risk of getting scalded decreases.


Zhejiang University

Zhejiang University
Hangzhou, China


Zhejiang University

Zhejiang University
Hangzhou, China

Guan Hongyue; Zhu Pengfei; Xu Tianning; Wang Yiming