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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
Overview of Microscopy Techniques01:22

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...
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.
Fundamental Principles
Accelerated...
Preparation of Samples for Electron Microscopy01:20

Preparation of Samples for Electron Microscopy

To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...

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Scanning-probe Single-electron Capacitance Spectroscopy
10:53

Scanning-probe Single-electron Capacitance Spectroscopy

Published on: July 30, 2013

Note: A scanning electron microscope sample holder for bidirectional characterization of atomic force microscope

Alon Eisenstein1, M Cynthia Goh

  • 1Department of Chemistry and Institute for Optical Sciences, University of Toronto, 80 St. George Street, Toronto M5S 3H6, Canada.

The Review of Scientific Instruments
|April 3, 2012
PubMed
Summary
This summary is machine-generated.

A new sample holder allows atomic force microscopy (AFM) tips to be easily characterized inside a scanning electron microscope (SEM). This tool enables quick tip mounting and dual-orientation imaging for detailed analysis.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Microscopy

Background:

  • Atomic Force Microscopy (AFM) is crucial for nanoscale imaging.
  • Characterizing AFM tips is essential for ensuring imaging accuracy and longevity.
  • Current methods for tip characterization can be time-consuming and complex.

Purpose of the Study:

  • To develop a novel sample holder for characterizing AFM tips within a Scanning Electron Microscope (SEM).
  • To facilitate quick and easy mounting and handling of AFM tips.
  • To enable simultaneous top and side-view imaging of AFM tips.

Main Methods:

  • Design and fabrication of a novel sample holder.
  • Integration of the sample holder into a Scanning Electron Microscope (SEM) chamber.
  • Utilizing a spring clip mechanism for secure and rapid tip mounting.
  • Accommodating two AFM tips in perpendicular orientations for multi-angle imaging.

Main Results:

  • The developed sample holder allows for efficient mounting of AFM tips.
  • The holder successfully accommodates two tips in perpendicular orientations.
  • SEM imaging provided clear top and side views of the mounted AFM tips, enabling detailed characterization.
  • The design facilitates quick handling and analysis of tip integrity and geometry.

Conclusions:

  • The novel sample holder provides an effective solution for characterizing AFM tips using SEM.
  • This tool simplifies the process of tip analysis, improving efficiency for researchers.
  • The ability to perform multi-view imaging enhances the comprehensive understanding of AFM tip condition.