Novel three-dimensional surface microfluidics enabled by unconventional fluidic interfaces

Lingfei Hong, Tingrui Pan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Surface microfluidics, offering unique flow characteristics and addressing intrinsic interfacial problems encountered in microfluidic systems, becomes an attractive alternative to the conventional closed-channel counterparts. Moreover, the planar structure in surface microfluidics enables simple microfabrication, while the open-surface platform allows direct fluidic operations and easy surface modification. In the paper, we first present novel three-dimensional microfluidic manipulations utilizing the unique flexible gas-liquid interface on surface microfluidic platform. The surface-micropatterned triple lines, defining the gas/liquid/solid interfacial boundaries, play an important role in determining the microflow profile. Specifically, the distinct elastic gas-liquid interface enables time-dependent (capacitive) and three-dimensional (deformable) operations of the flow, in contrast to the primary linear (resistive) nature of conventional microfluidics. Spatiotemporally dependent flow patterns on the planar microfluidic surfaces have been theoretically analyzed and experimentally controlled. Utilizing the distinct flow characteristics, new surface microfluidic functionalities, such as microflow regulation and flow rate-controlled switching, have been established. Furthermore, 3D surface microfluidic networks have been fabricated by fluidic connection of two independent planar surfaces, and microflow multiplexers with two-level flow-switching have been successfully devised to illustrate its potential in digital microfluidics.

Original languageEnglish (US)
Title of host publication2010 Solid-State Sensors, Actuators, and Microsystems Workshop
EditorsDavid J. Monk, Kimberly L. Turner
PublisherTransducer Research Foundation
Pages33-36
Number of pages4
ISBN (Electronic)9780964002494
StatePublished - Jan 1 2010
Event2010 Solid-State Sensors, Actuators, and Microsystems Workshop - Hilton Head Island, United States
Duration: Jun 6 2010Jun 10 2010

Publication series

NameTechnical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop

Conference

Conference2010 Solid-State Sensors, Actuators, and Microsystems Workshop
CountryUnited States
CityHilton Head Island
Period6/6/106/10/10

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Hardware and Architecture

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  • Cite this

    Hong, L., & Pan, T. (2010). Novel three-dimensional surface microfluidics enabled by unconventional fluidic interfaces. In D. J. Monk, & K. L. Turner (Eds.), 2010 Solid-State Sensors, Actuators, and Microsystems Workshop (pp. 33-36). (Technical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop). Transducer Research Foundation.