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Manipulation of Convection Using Infrared Light Emitted from Human Hands.

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Luo, Zhen 
Zhang, Lifu 
Shen, Qingchen 
Yang, Runheng 


Control of convection plays an important role in heat transfer regulation, bio/chemical sensing, phase separation, etc. Current convection controlling systems generally depend on engineered energy sources to drive and manipulate the convection, which brings additional energy consumption into the system. Here the use of human hand as a natural and sustainable infrared (IR) radiation source for the manipulation of liquid convection is demonstrated. The fluid can sense the change of the relative position or the shape of the hand with the formation of different convection patterns. Besides the generation of static complex patterns, dynamic manipulation of convections can also be realized via moving of hand or finger. The use of such sustainable convections to control the movement of a floating "boat" is further achieved. The use of human hands as the natural energy sources provides a promising approach for the manipulation of liquid convection without the need of extra external energy, which may be further utilized for low-cost and intelligent bio/chemical sensing and separation.


Publication status: Published

Funder: The Zhi‐Yuan Endowed fund from Shanghai Jiao Tong University,

Funder: Shanghai Jiao Tong University Overseas Study Grants


convection controlling system, human hand, infrared radiation, Humans, Convection, Hot Temperature, Infrared Rays

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Adv Sci (Weinh)

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National Key R & D Project from Minister of Science and Technology of China (SQ2022YFA1200152)
Innovation Program of Shanghai Municipal Education Commission (2019‐01‐07‐00‐02‐E00069)
The National Natural Science Foundation of China (51973109, 51873105)
The China Postdoctoral Science Foundation (2022M722045)