Key Laboratory of Low-Grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education, Chongqing, 400030, China.
Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, 400030, China.
Adv Sci (Weinh). 2022 Jul;9(21):e2201341. doi: 10.1002/advs.202201341. Epub 2022 May 21.
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.
灵活精确地操控 3D 液滴输送在诊断学、药物输送、生物工程等领域具有广泛的应用前景，是一个基本挑战。在此，本文开发了一种操纵液滴的光方法，使其行为类似于潜艇。该光方法能够灵活地进行 3D 运输、稳定悬浮和自由改变液滴的漂浮状态。实验证明，局部光热效应对水/油相中的热毛细流的诱导作用为液滴的能量供给和操控提供了动力。这种显著的运动性使得光驱动的潜艇式液滴成功实现了各种功能，如酸碱检测、颗粒捕获和输送，以及目标晶体的收集、溶解和输送。实验表明，光驱动的潜艇式液滴在各种应用中为人们长久以来追求的精确液滴操控提供了有前景的解决方案。
