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Self-assembled microcage fabrication for manipulating and selectively capturing microparticles and cells
Optics Express
|April 6, 2021
Summary
This study introduces a new method combining femtosecond laser two-photon polymerization (TPP) and optical tweezers (OTs) for precise single-particle and cell capture. This technique enables stable, targeted microcapture for improved in situ analysis.
Area of Science:
- Biotechnology
- Materials Science
- Optics
Background:
- Selective manipulation and targeted capture are crucial for cell behavior analysis.
- Current microcapture methods often lack precision and hinder in situ characterization.
Purpose of the Study:
- To develop a novel method for selective and targeted capture of single particles and cells.
- To overcome limitations of existing microcapture techniques for improved in situ analysis.
Main Methods:
- Combining femtosecond laser two-photon polymerization (TPP) for microfabrication with optical tweezers (OTs) for manipulation.
- Fabricating diverse ordered microcages using TPP-processed micropillars.
- Optimizing capillary-force-driven self-assembly of microcages.
Main Results:
- Achieved selective and targeted capture of single microparticles and cells within minutes.
- Demonstrated stable trapping of captured entities without additional forces.
- Successfully created diverse microcages with controlled shapes and dimensions.
Conclusions:
- The combined TPP and OTs method offers a precise and efficient approach for single-particle and cell capture.
- This technique facilitates subsequent in situ characterization and analysis.
- The developed microcages provide stable and versatile platforms for biological and material studies.
