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Overview of Microscopy Techniques

Overview of Microscopy Techniques

The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...

Super-resolution Fluorescence Microscopy

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.

Three-Dimensional Microscopy in Microbiology

Three-Dimensional Microscopy in Microbiology

Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...

Two-Dimensional Microscopy in Microbiology

Two-Dimensional Microscopy in Microbiology

Two-dimensional (2D) microscopy encompasses a range of optical techniques that capture images within a single focal plane, offering detailed representations of microscopic structures. These techniques are essential in biological and medical research, enabling the visualization of cellular and subcellular structures with different levels of contrast and specificity.There are several major types of 2D microscopy, each with strengths and applications.Bright-Field MicroscopyBright-field microscopy...

Overview of Electron Microscopy

Overview of Electron Microscopy

The wavelengths of visible light ultimately limit the maximum theoretical resolution of images created by light microscopes. Most light microscopes can only magnify 1000X, and a few can magnify up to 1500X. Electrons, like electromagnetic radiation, can behave like waves, but with wavelengths of 0.005 nm, they produce significantly greater resolution up to 0.05 nm as compared to 500 nm for visible light. An electron microscope (EM) can create a sharp image that is magnified up to 2,000,000X.

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Related Experiment Video

Updated: May 16, 2026

Laser-induced Breakdown Spectroscopy: A New Approach for Nanoparticle's Mapping and Quantification in Organ Tissue

Laser-induced Breakdown Spectroscopy: A New Approach for Nanoparticle's Mapping and Quantification in Organ Tissue

Published on: June 18, 2014

Modern micro and nanoparticle-based imaging techniques.

Marketa Ryvolova¹, Jana Chomoucka, Jana Drbohlavova

¹Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic. marketa.ryvolova@seznam.cz

Sensors (Basel, Switzerland)

|December 4, 2012

Summary

Nanomedicine utilizes nanoparticles for advanced cancer diagnostics and treatment. These nanomaterials enable targeted drug delivery and precise imaging, improving therapeutic outcomes.

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Last Updated: May 16, 2026

Laser-induced Breakdown Spectroscopy: A New Approach for Nanoparticle's Mapping and Quantification in Organ Tissue

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Published on: June 18, 2014

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Computer Numerical Control Micromilling of a Microfluidic Acrylic Device with a Staggered Restriction for Magnetic Nanoparticle-Based Immunoassays

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Area of Science:

Nanomedicine
Biotechnology
Materials Science

Background:

Growing demand for early cancer diagnostics and effective treatments necessitates advanced drug/gene delivery and imaging methods.
Nanomaterials offer unique properties for simultaneous drug delivery and treatment monitoring.
Nanomedicine is an emerging field gaining significant attention.

Purpose of the Study:

To review the properties and applications of nanoparticles in medical imaging and drug delivery.
To highlight the potential of nanomedicine in diagnostics and therapeutics.

Main Methods:

Review of in vitro imaging techniques (microscopy, laser breakdown spectroscopy).
Review of in vivo imaging modalities (magnetic resonance imaging, fluorescence imaging).
Discussion of various nanocarriers for drug delivery (iron oxides, gold, polymers, dendrimers, liposomes, micelles).

Main Results:

Nanoparticles like quantum dots and magnetic nanoparticles show excellent properties for in vivo imaging.
Nanocarriers demonstrate advantages for targeted drug and gene delivery.
Nanomaterials offer versatile applications in both diagnostic and therapeutic strategies.

Conclusions:

Nanoparticles are crucial tools in nanomedicine for enhancing cancer diagnostics and treatment.
The integration of drug delivery and imaging capabilities by nanoparticles represents a significant advancement.
Further research into nanomedicine promises improved patient outcomes for challenging diseases.