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Related Concept Videos

Sample Preparation for Analysis: Overview01:21

Sample Preparation for Analysis: Overview

398
Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
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Sample Preparation for Analysis: Advanced Techniques01:08

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Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
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A precision manual grinding tool for sample preparation.

Lawrence Whitmore1

  • 1Department of Chemistry and Physics of Materials, Jakob-Haringer-Strasse 2a, Paris Lodron University of Salzburg (PLUS), 5020-Salzburg, Austria.

Ultramicroscopy
|December 9, 2021
PubMed
Summary
This summary is machine-generated.

A new 3D-printable grinding tool enables precise sample preparation for transmission electron microscopy. This low-vibration device facilitates the creation of extremely thin samples with parallel faces, crucial for advanced material analysis.

Keywords:
3D-printingGrindingPolishingSample preparationTransmission electron microscopy

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Mechanical Engineering

Background:

  • Transmission electron microscopy (TEM) requires precisely prepared samples.
  • Current methods for sample preparation can be complex and time-consuming.
  • The need for thin, parallel-faced samples is critical for high-resolution imaging.

Purpose of the Study:

  • To develop a novel, accessible precision grinding tool for TEM sample preparation.
  • To enable laboratories to fabricate the tool using 3D printing.
  • To achieve highly parallel and extremely thin samples.

Main Methods:

  • Design and fabrication of a novel precision grinding tool using 3D printing.
  • Development of a simple sample alignment method.
  • Evaluation of the tool by preparing samples of magnesium alloy and silicon.

Main Results:

  • Successful fabrication of a 3D-printable precision grinding tool.
  • Demonstrated precise sample alignment and preparation of parallel faces.
  • Prepared samples below 10 µm thickness with low vibration and high accuracy.

Conclusions:

  • The developed grinding tool is a cost-effective and accessible solution for TEM sample preparation.
  • The tool facilitates the preparation of high-quality, ultra-thin samples.
  • Design files are provided for laboratory implementation via 3D printing or CNC milling.