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Imaging Biological Samples with Optical Microscopy

Imaging Biological Samples with Optical Microscopy

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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Related Experiment Video

Updated: Jun 19, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

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Published on: February 4, 2017

Proposed method for molecular optical imaging.

|October 28, 2009

Summary

This summary is machine-generated.

This study demonstrates resolving multiple features using unique optical characteristics and spatial coordinates. Near-field fluorescence microscopy offers molecular sensitivity and high spatial resolution.

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Area of Science:

Optics and Spectroscopy
Microscopy Techniques

Background:

Resolving discrete features in microscopy is crucial for scientific advancement.
Current limitations exist in achieving high spatial resolution and molecular sensitivity simultaneously.

Purpose of the Study:

To develop a method for resolving multiple discrete features within a focal region.
To assess the feasibility of near-field fluorescence excitation microscopy/spectroscopy for high-resolution imaging.

Main Methods:

Isolating features based on unique optical characteristics (n >= 1).
Measuring relative spatial coordinates in an (m+n)d-dimensional space.
Analyzing the influence of point-spread function and measurement accuracy on resolution.

Main Results:

Demonstrated capability to resolve multiple discrete features.
Established dependence of feature separation on point-spread function and optical parameters.
Indicated that spatial resolution is limited by coordinate measurement accuracy.

Conclusions:

Near-field fluorescence excitation microscopy/spectroscopy is a viable technique.
The proposed method enables molecular sensitivity and high spatial resolution.
This approach advances the capability of microscopic feature analysis.