Yuliang Xie

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During the deep reactive ion etching process, the sidewalls of a silicon mold feature rough wavy structures, which can be transferred onto a polydimethylsiloxane (PDMS) microchannel through the soft lithography technique. In this article, we utilized the wavy structures of PDMS microchannel sidewalls to initiate and cavitate bubbles in the presence of(More)
We investigated bubble oscillation and its induced enhancement of mass transfer in a liquid-liquid extraction process with an acoustically-driven, bubble-based microfluidic device. The oscillation of individually trapped bubbles, of known sizes, in microchannels was studied at both a fixed frequency, and over a range of frequencies. Resonant frequencies(More)
MCC templates composed of different sized polystyrene (PS) spheres were prepared by a spin-coating method. Glass slides (1 cm x 1 cm) were cleaned with acetone, ethanol, deionized water, 98% H2SO4/H2O2 (3:1), H2O/NH3·H2O/H2O2 (5:1:1), and distilled water in order to obtain superhydrophilic surfaces. A total of 10 µL monodisperse PS spheres in suspension(More)
In this work, we develop an in situ method to grow highly controllable, sensitive, three-dimensional (3D) surface-enhanced Raman scattering (SERS) substrates via an optothermal effect within microfluidic devices. Implementing this approach, we fabricate SERS substrates composed of Ag@ZnO structures at prescribed locations inside microfluidic channels, sites(More)
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