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Overview of Microscopy Techniques01:22

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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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Double Resonance Techniques: Overview01:12

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Atomic Force Microscopy01:08

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Electron Spin Resonance Micro-imaging of Live Species for Oxygen Mapping
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Published on: August 26, 2010

Cryogenic electron spin resonance microimaging probe.

Ygal Twig1, Ekaterina Dikarov, Aharon Blank

  • 1Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel.

Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|May 15, 2012
PubMed
Summary
This summary is machine-generated.

A novel Electron Spin Resonance (ESR) probe offers microscopic imaging resolution and high spin sensitivity across a wide temperature range. This advancement enables detailed 2D and 3D imaging of materials like phosphorus-doped silicon.

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Area of Science:

  • Physics
  • Materials Science
  • Spectroscopy

Background:

  • Electron Spin Resonance (ESR) is a powerful technique for studying materials with unpaired electrons.
  • High-resolution and high-sensitivity ESR imaging is crucial for advanced material characterization.
  • Existing ESR imaging techniques face limitations in resolution and sensitivity.

Purpose of the Study:

  • To introduce a new probe for Electron Spin Resonance (ESR) imaging.
  • To achieve microscopic resolution and high spin sensitivity in ESR imaging.
  • To operate across a broad temperature range (4.2-300 K).

Main Methods:

  • Design and construction of a novel ESR probe incorporating a surface loop-gap microresonator.
  • Detailed explanation of the probe's operational principles.
  • Experimental validation using a flat test sample of phosphorus-doped silicon.

Main Results:

  • Demonstration of the probe's capability to acquire 2D and 3D ESR images.
  • Successful imaging of a phosphorus-doped silicon sample.
  • Verification of the resonator's resonance mode and B(1) distribution.
  • Estimation of the number of spins within the sample.

Conclusions:

  • The developed ESR probe provides high-resolution and high-sensitivity imaging capabilities.
  • The probe is suitable for characterizing materials like semiconductors.
  • The experimental results validate the probe's design and performance.