title: Acousto-plasmofluidics: Acoustic modulation of surface plasmon resonance in microfluidic systems.
abstract: We acoustically modulated the localized surface plasmon resonances (LSPRs) of metal nanostructures integrated within microfluidic systems. An acoustically driven micromixing device based on bubble microstreaming quickly and homogeneously mixes multiple laminar flows of different refractive indices. The altered refractive index of the mixed fluids enables rapid modulation of the LSPRs of gold nanodisk arrays embedded within the microfluidic channel. The device features fast response for dynamic operation, and the refractive index within the channel is tailorable. With these unique features, our "acousto-plasmofluidic" device can be useful in applications such as optical switches, modulators, filters, biosensors, and lab-on-a-chip systems.
authors.affiliation: Department of Engineering Science and Mechanics, Department of Biomedical Engineering, The Pennsylvania State University , University Park, PA 16802 USA.
authors.forename: Daniel
authors.initials: D
authors.lastname: Ahmed
authors.affiliation: Department of Mechanical Engineering, Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin , Austin, TX 78712 USA.
authors.forename: Xiaolei
authors.initials: X
authors.lastname: Peng
authors.affiliation: Department of Engineering Science and Mechanics, Department of Biomedical Engineering, The Pennsylvania State University , University Park, PA 16802 USA.
authors.forename: Adem
authors.initials: A
authors.lastname: Ozcelik
authors.affiliation: Department of Mechanical Engineering, Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin , Austin, TX 78712 USA.
authors.forename: Yuebing
authors.initials: Y
authors.lastname: Zheng
authors.affiliation: Department of Engineering Science and Mechanics, Department of Biomedical Engineering, The Pennsylvania State University , University Park, PA 16802 USA.
authors.forename: Tony Jun
authors.initials: TJ
authors.lastname: Huang