Journal
ADVANCED SCIENCE
Volume 9, Issue 21, Pages -Publisher
WILEY
DOI: 10.1002/advs.202201341
Keywords
3D transportation; light-fueled droplet; photothermal conversion; themocapillary flow
Categories
Funding
- National Natural Science Foundation of China [51925601]
- Innovative Research Group Project of National Natural Science Foundation of China [52021004]
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In this study, a light method was developed to manipulate droplets to behave like submarines, enabling flexible 3D transportation and various functions such as acid-base detection and particle capture. The localized photothermal effect induced thermocapillary flow in the droplet, facilitating its manipulation and movement.
Flexibly and precisely manipulating 3D droplet transportation is a fundamental challenge for broad implications in diagnostics, drug delivery, bioengineering, etc. Herein, a light method is developed for manipulating a droplet to make it behave like a submarine. This light method enables flexible 3D transportation, stable suspension, and floating of a droplet, which can be freely altered. It is demonstrated that the localized photothermal effect induced thermocapillary flow in the water droplet/oil phase is responsible for energizing and manipulating the droplet. With such remarkable motility, the light-fueled submarine-like droplet successfully realizes various functions such as the acid-base detection, particle capture and transportation, and target crystal collection, dissolution and transportation. It is demonstrated that the light-fueled submarine-like droplet shows promising perspective for long-sought precise droplet manipulation in various applications.
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