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Related Concept Videos

Imaging Biological Samples with Optical Microscopy01:18

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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
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Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
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Rotation of millimeter-sized objects using ordinary light.

Olivier Emile, Janine Emile

    Optics Letters
    |January 15, 2016
    PubMed
    Summary
    This summary is machine-generated.

    Researchers demonstrate optically-induced rotation of micro-objects using light waves. This method offers precise control for applications in microelectromechanical systems and biomanipulations, potentially driving liquid flow in optofluidics.

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    Area of Science:

    • Optics and Photonics
    • Microfluidics
    • Nanotechnology

    Background:

    • Optical manipulation of micro-objects offers advanced control in fields like microelectromechanical systems (MEMS), biomanipulations, and optofluidics.
    • Existing methods for micro-object manipulation often require specialized equipment or complex setups.

    Purpose of the Study:

    • To demonstrate the optically-induced rotation of simple asymmetric two-dimensional objects.
    • To explore the use of ordinary laser sources and black body radiation for optical rotation.
    • To investigate the potential of this technique for inducing liquid flow in optofluidic devices.

    Main Methods:

    • Utilizing plane waves from laser sources or black body radiation to induce rotation.
    • Observing the behavior of asymmetric two-dimensional objects floating at an air/water interface.
    • Analyzing the relationship between light intensity, object asymmetry, and rotation speed.

    Main Results:

    • Successfully demonstrated steady-state optical rotation of asymmetric micro-objects.
    • Observed that rotation speed is dependent on light intensity and object asymmetry.
    • The effect is interpreted as light diffraction by the object's edges.

    Conclusions:

    • Optically-induced rotation provides a novel method for controlling micro-objects.
    • This technique can be implemented using readily available light sources, including black body radiation.
    • The findings suggest potential for developing optofluidic devices that induce liquid flow without specialized light sources.