Remote Droplet Manipulation on Self‐Healing Thermally Activated Magnetic Slippery Surfaces

Abstract

COMMUNICATION (1 of 7)Droplet manipulation on a surface is a crucial phenomenon in a broad spectrum of disciplines from energy and water systems, [1][2][3][4][5][6][7][8][9][10] chemical microreactors, [11,12] droplet-based microfluidics [13][14][15][16] to biosciences. [17][18][19] In these embodiments, droplet manipulation is required for transporting, guiding, removing, splitting, merging, or trapping of droplets for intended physical and chemical interactions. A variety of approaches have been developed for controlled droplet manipulation including surface

Liquid-Vapor Phase-Change Heat Transfer on Functionalized Nanowired Surfaces and Beyond

“…The SLIPS has been widely studied to promote droplet mobility. 73,77,[284][285][286] These surfaces exhibit excellent droplet mobility but suffer from the relatively small solid surface area for droplet nucleation. A hydrophilic directional slippery rough surface was recently fabricated to improve droplet nucleation and removal (Figure 16D).…”

External Stimuli Responsive Liquid‐Infused Surfaces Switching between Slippery and Nonslippery States: Fabrications and Applications

“…Similar to photoelectric effect promoted the development of electric filed E‐LIS, synergistic effect induced by temperature also expanded temperature E‐LIS. Recently, Irajizad and co‐workers presented a thermally activated magnetic field responsive surface with a thin layer of ferrofluid covered . Through introducing a temperature gradient, a gradient of surface tension and a shear stress were generated, which pushed the droplet to move.…”

“…Recently, Irajizad and co-workers presented a thermally activated magnetic field responsive surface with a thin layer of ferrofluid covered. [76] Through introducing a temperature gradient, a gradient of surface tension and a shear stress were generated, which pushed the droplet to move. Later on, Jin and co-workers developed photothermal synergistic E-LIS through magnetic Fe 3 O 4 nanoparticles combined with dopamine.…”

Droplet‐based microreactor for the production of micro/nano‐materials

“…Different reaction step usually needs integration of opposite channel surface wettability, temperature control, and various droplet manipulation methods. Many efforts have been devoted to the studies of droplet manipulation methods and temperature control . However, there is currently no reliable and easy‐to‐implement method to precisely make different parts of the channel have opposite surface wettability.…”