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Related Concept Videos

Overview of Microscopy Techniques01:22

Overview of Microscopy Techniques

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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...
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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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Overview of Electron Microscopy01:25

Overview of Electron Microscopy

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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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Two-Dimensional Microscopy in Microbiology01:29

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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...
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Confocal Fluorescence Microscopy01:16

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Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
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Three-Dimensional Microscopy in Microbiology01:28

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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...
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Updated: Jun 8, 2025

High-resolution Fiber-optic Microendoscopy for in situ Cellular Imaging
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High-resolution Fiber-optic Microendoscopy for in situ Cellular Imaging

Published on: January 11, 2011

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Portable, low-cost, desktop microscope.

Vincent Salvadori1, Daniel Fäh1, Sarina Flühler1

  • 1Lucerne School of Engineering and Architecture, Institute of Medical Engineering, Space Biology Group, Hergiswil, Switzerland.

Hardwarex
|November 8, 2024
PubMed
Summary
This summary is machine-generated.

We developed an affordable, portable single-lens microscope using a Raspberry Pi. This low-cost, versatile microscope enables various illumination techniques for exploring the unseen world.

Keywords:
CameraLow-costMicroscopePortableRaspberry Pi

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Area of Science:

  • Microscopy
  • Optical Engineering
  • Educational Technology

Background:

  • Traditional light microscopes are often expensive, bulky, and not suitable for mobile or amateur use.
  • Accessibility to microscopy is limited for educational and hobbyist applications due to cost and portability constraints.

Purpose of the Study:

  • To design and present an affordable and portable single-lens microscope.
  • To enable advanced microscopy techniques beyond basic brightfield illumination in a compact device.

Main Methods:

  • The microscope integrates a Raspberry Pi single-board computer, camera, touchscreen display, and LED ring.
  • It supports brightfield microscopy and contrast-enhancing techniques like oblique, dark-field, and Rheinberg illumination.

Main Results:

  • The developed microscope is low-cost, portable, and versatile.
  • It successfully implements multiple illumination methods for diverse microscopic imaging.

Conclusions:

  • This affordable, portable microscope is ideal for applications not requiring high-end optics.
  • Its flexible use and low cost make it suitable for educational purposes and amateur exploration of the micro-world.