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Increasing cDNA Yields from Single-cell Quantities of mRNA in Standard Laboratory Reverse Transcriptase Reactions using Acoustic Microstreaming
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Regulating Biomolecular Surface Interactions Using Tunable Acoustic Streaming.

Shuting Pan1, Rui You1, Xian Chen1

  • 1State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, China.

ACS Sensors
|August 28, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a gigahertz (GHz) acoustic streaming method to enhance micro/nanoscale biosensor performance. The technique overcomes diffusion limits and removes biofouling, significantly improving analyte binding rates.

Keywords:
acoustic streamingdeviation anglediffusion-limited bindingnonspecific bindingsurface-based biosensor

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Area of Science:

  • Biosensing
  • Microfluidics
  • Acoustic Technology

Background:

  • Diffusion limitations and nonspecific surface absorption hinder micro/nanoscale affinity biosensor development.
  • Existing methods struggle to address both issues simultaneously.

Purpose of the Study:

  • To present a novel gigahertz (GHz) acoustic streaming approach to overcome diffusion limitations and biofouling in biosensors.
  • To demonstrate the dual functionality of promoting mass transfer and removing biofouling.

Main Methods:

  • Utilized a gigahertz (GHz) resonator integrated with a sensor.
  • Employed acoustic streaming in "jet mode" (α ≤ 0) to enhance analyte mass transfer.
  • Used "shear mode" (0 < α < π/4) for biofouling removal via acoustic scouring.
  • Integrated the system with optoelectronic sensing.

Main Results:

  • Simulations confirmed jet mode enhances analyte binding by overcoming diffusion limitations.
  • Simulations showed shear mode effectively removes biofouling.
  • Experimental studies achieved a 34-fold enhancement in the initial binding rate.

Conclusions:

  • The GHz acoustic streaming approach efficiently enhances biosensor performance.
  • The method offers controllability and versatility for various biosensing and lab-on-chip applications.
  • This technique presents a promising solution for improving affinity biosensor efficiency and longevity.