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Related Concept Videos

UV–Vis Spectrometers01:14

UV–Vis Spectrometers

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The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
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Spectrophotometry is the quantitative measurement of the absorption, reflection, diffraction, or transmission of electromagnetic radiation through a material as a function of the intensity and wavelength of the radiation. A spectrophotometer is a device used to measure the change in the radiation intensity caused by its interaction with the material.
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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

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Test-Paper-Like Photonic Crystal Viscometer.

Yuqi Zhang1, Qianqian Fu2, Jianping Ge1,2

  • 1School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China.

Small (Weinheim an Der Bergstrasse, Germany)
|January 17, 2017
PubMed
Summary
This summary is machine-generated.

A novel photonic crystal viscometer offers rapid, portable viscosity measurements for various liquids. This disposable device utilizes infiltration time to determine liquid viscosity with minimal sample volume.

Keywords:
photonic crystalssensorsviscometersviscosity

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Area of Science:

  • Materials Science
  • Optics
  • Physical Chemistry

Background:

  • Viscosity measurement is crucial in various scientific and industrial applications.
  • Existing viscometers can be complex, require large sample volumes, or are not easily portable.
  • Photonic crystals (PCs) offer unique optical properties sensitive to their environment.

Purpose of the Study:

  • To develop a portable, disposable photonic crystal viscometer.
  • To establish a correlation between liquid viscosity and PC infiltration time.
  • To enable rapid viscosity determination for diverse liquid samples.

Main Methods:

  • Fabrication of a test-paper-like photonic crystal (PC) device.
  • Utilizing the principle of viscous liquid infiltration into the PC film.
  • Measuring the time required for complete liquid infiltration.

Main Results:

  • A positive correlation was observed between liquid viscosity and infiltration time.
  • The PC viscometer demonstrated effective performance across different liquid types.
  • The device requires only a small sample volume for analysis.

Conclusions:

  • The developed PC viscometer is a viable tool for quick and accurate viscosity measurements.
  • Its portable and disposable nature makes it suitable for diverse field applications.
  • This technology offers a cost-effective and efficient alternative for routine viscosity testing.