Open AccessElementary autonomous surface microfluidic devices based on laser-fabricated wetting gradient microtextures that drive directional water flows
Author(s) -
Nadezhda Shchedrina,
S. I. Kudryashov,
M. K. Moskvin,
Г. В. Одинцова,
I. V. Krylach,
П. А. Данилов,
A. G. Bondarenko,
Evgenia Davydova,
M. I. Fokina,
Roman Olekhnovich,
M. V. Uspenskaya,
Vadim P. Veiko
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.418173
Subject(s) - microfluidics , wetting , materials science , laser , nanosecond , optics , surface (topology) , water flow , surface modification , flow (mathematics) , optoelectronics , nanotechnology , composite material , mechanical engineering , physics , geometry , mathematics , engineering , environmental engineering
Topography-dependent tuning of water wettability was achieved on a stainless steel surface textured by nanosecond-laser pulses at different laser fluences, with the minimal contribution of the surface chemical modification. Such differently-wet neighboring surface spots were demonstrated to drive an autonomous directional water flow. A series of elementary microfluidic devices based on the spatial wetting gradients were designed and tested as building blocks of "green", energy-saving autonomous microfluidic circuits.