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Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations
Published on: August 21, 2018
Acoustic tweezers: patterning cells and microparticles using standing surface acoustic waves (SSAW)
Jinjie Shi1, Daniel Ahmed, Xiaole Mao
1Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA.
Lab on a Chip
|October 1, 2009
Summary
Acoustic tweezers use sound waves for non-invasive cell and microparticle patterning, regardless of their properties. This simple, miniaturized technology offers a promising tool for diverse scientific applications.
Area of Science:
- Biotechnology
- Materials Science
- Acoustic Physics
Background:
- Active patterning methods are crucial for precise manipulation of biological and microscale materials.
- Existing techniques like optical tweezers can be invasive or limited by particle properties.
Purpose of the Study:
- To introduce and characterize a novel active patterning technique called "acoustic tweezers."
- To demonstrate the versatility and non-invasive nature of acoustic tweezers for cell and microparticle manipulation.
Main Methods:
- Utilizing standing surface acoustic waves (SSAW) to create acoustic fields for particle manipulation.
- Employing flow cytometry to assess the non-invasive nature of the technique.
Main Results:
- Acoustic tweezers successfully patterned cells and microparticles irrespective of their shape, size, charge, or polarity.
- The technique operates at significantly lower power intensities compared to optical tweezers.
- Flow cytometry confirmed the non-invasive characteristics of the acoustic tweezers method.
Conclusions:
- Acoustic tweezers provide a simple, miniaturizable, and non-invasive method for active patterning.
- This technique holds significant potential for applications across biology, chemistry, engineering, and materials science.
