Acoustic Centrifugation Facilitating Particle Sensing in Liquid on a Piezoelectric Resonator

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)801-804
Number of pages4
Journal / PublicationIEEE Electron Device Letters
Issue number5
Online published25 Mar 2022
Publication statusPublished - May 2022


We have developed a hybrid device that fuses the techniques of acoustofluidic localization and resonator-based mass sensing of particles in liquid-phase for in-situ analysis in a μL droplet. An elliptic plate resonator (EPR) was used in this work to verify the capability of acoustofluidic manipulation on a resonator chip. Particles are focused on the EPR by the acoustic tweezers to increase the effectiveness of detection. The EPR has a reasonably high liquid-phase quality factor (Q) and low motional resistance (Rm) to allow the detection of focused particles in liquid. Moreover, the resonator chip can be detached from the acoustic tweezing device without damage. This allows replacement of just the chip when required. A potential application of this work is organizing and sensing cells on-chip using the concepts herein.

Research Area(s)

  • Acoustofluidics, microcentrifugation, MEMS resonator, surface acoustic wave devices