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Glassware Calibration01:11

Glassware Calibration

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Accurate calibration of glassware, such as volumetric flasks, pipettes, and burettes, is essential to ensure accurate measurements in the analytical laboratory. Calibration helps maintain consistency across measurements and prevents errors arising from inaccurate volumes.
Volumetric flasks: Volumetric flasks are designed to prepare aqueous solutions of precise volumes accurately with a calibration line on the neck. To calibrate a volumetric flask, it is important to fill it with distilled...
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Fluid-cell Raman Spectroscopy for operando Studies of Reaction and Transport Phenomena during Silicate Glass Corrosion
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Experimental method to quantify the ring size distribution in silicate glasses and simulation validation thereof.

Qi Zhou1,2, Ying Shi3, Binghui Deng1

  • 1Science and Technology Division, Corning Incorporated, Corning, NY 14831, USA.

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|July 8, 2021
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Summary
This summary is machine-generated.

Researchers can now determine the ring size distribution in silicate glasses, a key feature of their medium-range structure, using neutron diffraction. This breakthrough unlocks a deeper understanding of glass properties.

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Solid-State Chemistry

Background:

  • Silicate glasses lack long-range order, with their out-of-equilibrium nature primarily determined by medium-range order.
  • The ring size distribution, crucial for medium-range structure, has been experimentally inaccessible in silicate glasses.
  • Understanding medium-range order is vital for predicting glass properties and behavior.

Purpose of the Study:

  • To develop a method for determining the ring size distribution in silicate glasses.
  • To investigate the relationship between ring size distribution and the first sharp diffraction peak (FSDP).
  • To reveal the nature of medium-range order in silicate glasses.

Main Methods:

  • Combining neutron diffraction experiments with force-enhanced atomic refinement simulations.
  • Analyzing the first sharp diffraction peak (FSDP) in the structure factor of silicate glasses.
  • Utilizing two archetypal silicate glass systems for validation.

Main Results:

  • Distinct contributions of different ring sizes to the FSDP were identified.
  • A method was established to determine ring size distribution solely from neutron diffraction patterns.
  • The analysis of the FSDP shape proved effective in characterizing medium-range structure.

Conclusions:

  • Neutron diffraction, combined with advanced analysis, can unveil the hidden medium-range order in silicate glasses.
  • The developed method provides direct access to the ring size distribution, a critical structural parameter.
  • This work opens new avenues for the characterization and design of silicate glasses.