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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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Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

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The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
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Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

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Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and signal-to-noise ratio for the analyte. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.
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IR Spectrometers

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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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Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for...
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Atomic Absorption Spectroscopy: Instrumentation01:22

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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.
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An ultraminiaturized spectrometer.

Jorge Quereda1, Andres Castellanos-Gomez2

  • 1Grupo Interdisciplinar de Sistemas Complejos: Modelización Y Simulación, Departamento de Física de Materiales, Universidad Complutense de Madrid, Madrid, Spain.

Science (New York, N.Y.)
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PubMed
Summary
This summary is machine-generated.

Miniaturized spectrometers enable advanced sensing capabilities in everyday consumer electronics. This technological advancement broadens the potential applications of spectroscopy beyond traditional laboratory settings.

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Area of Science:

  • Optics and Photonics
  • Spectroscopy
  • Miniaturization Technologies

Background:

  • Spectrometers are crucial analytical instruments for measuring light properties.
  • Current spectrometers are often bulky, limiting their widespread adoption in portable devices.
  • Advancements in optical engineering are driving the development of smaller, more efficient spectrometers.

Purpose of the Study:

  • To explore the feasibility of scaling down spectrometers for consumer applications.
  • To identify key challenges and potential solutions in spectrometer miniaturization.
  • To assess the impact of miniaturized spectrometers on the consumer electronics market.

Main Methods:

  • Review of existing miniaturization techniques for optical components.
  • Analysis of novel materials and fabrication processes for compact spectrometers.
  • Simulation and modeling of reduced-size spectrometer designs.

Main Results:

  • Successful demonstration of spectrometer designs with significantly reduced dimensions.
  • Identification of cost-effective manufacturing approaches for miniaturized spectrometers.
  • Validation of performance metrics comparable to larger, conventional spectrometers.

Conclusions:

  • Spectrometer miniaturization is achievable, paving the way for integration into consumer devices.
  • Miniaturized spectrometers offer new possibilities for on-the-go chemical analysis and material identification.
  • This innovation is poised to revolutionize consumer electronics by incorporating advanced spectroscopic capabilities.