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Related Concept Videos

Atomic Spectroscopy: Effects of Temperature01:27

Atomic Spectroscopy: Effects of Temperature

Atomization, converting samples into gas-phase atoms and ions, is essential for atomic spectroscopy. The flame temperature required for atomization affects the efficiency of the atomic spectroscopic methods by increasing the atomization efficiency and the relative population of the excited and ground states.
At thermal equilibrium, the relative populations of excited and ground state atoms can be estimated using the Maxwell–Boltzmann distribution. For example, an increase in temperature from...
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

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. Samples for...
Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

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.
The atomizer used in AAS can be either a flame atomizer or an...
IR Spectrometers01:25

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...

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Related Experiment Video

Updated: May 11, 2026

A Simple Dewar/Cryostat for Thermally Equilibrating Samples at Known Temperatures for Accurate Cryogenic Luminescence Measurements
06:06

A Simple Dewar/Cryostat for Thermally Equilibrating Samples at Known Temperatures for Accurate Cryogenic Luminescence Measurements

Published on: July 19, 2016

Note: A variable temperature cell for spectroscopy of thin films.

T Brock-Nannestad1, C B Nielsen, H Ø Bak

  • 1Department of Chemistry, University of Copenhagen, Copenhagen Ø, Denmark. theisn@kiku.dk

The Review of Scientific Instruments
|May 3, 2013
PubMed
Summary
This summary is machine-generated.

A new cell allows precise UV/Vis spectral measurements of thin films up to 800 K. This versatile setup is compatible with standard laboratory spectrophotometers for advanced material characterization.

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A Simple Dewar/Cryostat for Thermally Equilibrating Samples at Known Temperatures for Accurate Cryogenic Luminescence Measurements
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Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
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Published on: December 27, 2018

Area of Science:

  • Materials Science
  • Spectroscopy
  • Optical Engineering

Background:

  • Accurate characterization of thin films is crucial for material development.
  • High-temperature spectral analysis requires specialized, stable measurement environments.
  • Existing setups may lack compatibility with standard laboratory equipment.

Purpose of the Study:

  • To design and construct a novel cell for precise UV/Vis spectral measurements.
  • To enable high-temperature (up to 800 K) analysis of thin films on transparent substrates.
  • To ensure compatibility with widely used spectrophotometers.

Main Methods:

  • Development of a cell with a water-cooled aluminum heat shield and a nickel-coated copper sample holder.
  • Integration of a heating element and thermo-resistor for precise temperature control.
  • Testing the cell's compatibility with Varian Cary 5E UV/Vis and Bio-Rad IR spectrometers.

Main Results:

  • Successfully designed and constructed a high-temperature spectroscopic cell.
  • Demonstrated precise UV/Vis spectral measurements up to 800 K.
  • Verified compatibility with standard Varian Cary 5E and Bio-Rad IR instruments.

Conclusions:

  • The developed cell provides a versatile and accessible solution for high-temperature thin film spectroscopy.
  • The cell's design facilitates accurate characterization of thermally stable materials.
  • This advancement supports research in areas like laser welding applications.