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Related Concept Videos

Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
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Scanning Electron Microscopy01:07

Scanning Electron Microscopy

A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
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Atomic Emission Spectroscopy: Instrumentation01:22

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Atomic Absorption Spectroscopy: Instrumentation01:22

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An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
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Updated: Jul 2, 2026

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
08:53

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

Published on: October 9, 2012

Vidicon-camera parallel-detection system for angle-resolved electron spectroscopy.

S P Weeks1, J E Rowe, S B Christman

  • 1Bell Laboratories, Murray Hill, New Jersey 07974.

The Review of Scientific Instruments
|October 1, 1979
PubMed
Summary
This summary is machine-generated.

A new ultraviolet photoemission spectroscopy and Low-Energy Electron Diffraction (LEED) system uses a vidicon camera for rapid, wide-angle data collection. This advanced technique significantly speeds up surface analysis compared to traditional methods.

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Last Updated: Jul 2, 2026

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
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Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
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High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
13:31

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Area of Science:

  • Surface Science
  • Spectroscopy
  • Materials Characterization

Background:

  • Traditional Low-Energy Electron Diffraction (LEED) and ultraviolet photoemission spectroscopy (UPS) methods are time-consuming.
  • Single-detector systems limit the speed and efficiency of surface analysis.

Purpose of the Study:

  • To develop a novel multiple-angle, parallel detection system for UPS and LEED.
  • To significantly enhance the speed of surface characterization techniques.

Main Methods:

  • Integration of a minicomputer-controlled vidicon camera with a LEED-grid energy analyzer.
  • Implementation of a parallel detection scheme for simultaneous data acquisition over a wide angular range.

Main Results:

  • Achieved rapid data acquisition, enabling energy spectra collection over a 70°x70° geometry with ±1.5° resolution in 30-40 minutes.
  • Enabled collection of intensities for all visible LEED beams in a few seconds.
  • Demonstrated a speed increase of nearly two orders of magnitude compared to conventional single-detector systems.

Conclusions:

  • The developed system offers a substantial advancement in the speed and efficiency of surface analysis using UPS and LEED.
  • This parallel detection scheme overcomes the limitations of traditional sequential measurement techniques.
  • Further discussion will cover the operating principles and inherent design limitations of this new system.