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Updated: May 30, 2026
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Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
Published on: July 5, 2016
Driving and analysis of micro-objects by digital holographic microscope in microfluidics
F Merola1, L Miccio, M Paturzo
1Istituto Nazionale di Ottica (CNR-INO), Via Campi Flegrei 34, 80078 - Pozzuoli, Naples, Italy. francesco.merola@ino.it
Optics Letters
|August 18, 2011
Summary
We developed a simple optical setup using two laser beams to characterize microfluidic particles. This method generates quantitative phase-contrast maps for polymeric particles and in vitro cells.
Area of Science:
- Optical physics
- Microfluidics
- Biophysics
Background:
- Characterizing microfluidic particles is crucial for various scientific disciplines.
- Existing methods may lack the resolution or quantitative capabilities for detailed analysis.
Purpose of the Study:
- To propose and demonstrate a novel optical configuration for characterizing floating particles in microfluidic chambers.
- To obtain quantitative phase-contrast maps of particles using interference microscopy.
Main Methods:
- A simple optical setup employing two laser beams from a single source.
- One beam simultaneously provides optical forces for particle manipulation and object illumination.
- The second beam serves as the reference beam for holographic recording.
Main Results:
- Successful characterization of polymeric particles and in vitro cells.
- Generation of quantitative phase-contrast maps.
- Demonstration of the proposed system's feasibility and effectiveness.
Conclusions:
- The proposed interference microscopy configuration offers a straightforward and effective method for particle characterization in microfluidics.
- The approach provides quantitative phase-contrast information, valuable for biological and material science applications.
