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Updated: Oct 21, 2025
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Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities
Published on: April 22, 2013
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Model systems for optical trapping: the physical basis and biological applications.
Ilya Konyshev1,2, Andrey Byvalov1,2
1Institute of Physiology of Коmi Science Centre of the Ural Branch of the Russian Academy of Sciences, FRC Komi SC UB RAS, Komi Republic, 167982 Syktyvkar, Russian Federation.
Biophysical Reviews
|September 2, 2021
Summary
Optical trapping and atomic force microscopy are key micromechanical methods for studying molecular interactions in biology. These techniques analyze forces between cells and surfaces, aiding research on bacterial and eukaryotic cell structures.
Area of Science:
- Biophysics
- Cell Biology
- Nanotechnology
Background:
- Micromechanical methods are crucial for understanding molecular interactions in biology.
- Optical trapping and atomic force microscopy are prominent techniques in this field.
- These methods are applied to study mechanical properties of cellular surface structures.
Purpose of the Study:
- To review the physical principles of optical trapping.
- To explain the calculation of intermolecular forces (van der Waals, electrostatic, donor-acceptor).
- To summarize model systems and manipulation techniques for biological samples.
Main Methods:
- Optical trapping principles and setup.
- Atomic force microscopy applications.
- Calculation of intermolecular forces in microparticle interactions.
Main Results:
- Optical trapping effectively studies mechanical properties of bacterial (pili, flagella) and eukaryotic (filopodia) cell structures.
- The review details force calculations for microparticle and surface interactions.
- Different model systems (abiotic, biotic, mixed) and manipulation of living/non-spherical objects are described.
Conclusions:
- Optical trapping is a versatile tool for probing molecular interactions and mechanical properties of diverse biological structures.
- Understanding intermolecular forces is key to interpreting trapping experiments.
- The review provides a comprehensive overview for researchers using these micromechanical techniques.
