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Related Concept Videos

UV–Vis Spectrometers01:14

UV–Vis Spectrometers

1.2K
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.
1.2K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

160
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
160
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

282
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.
282
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

129
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
129
Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

732
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
732
IR Spectrometers01:25

IR Spectrometers

1.0K
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...
1.0K

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Updated: May 17, 2025

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
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High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

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Stress-engineered ultra-broadband spectrometers.

Gongyuan Zhang1,2, Tom Albrow-Owen3, Wenjun Peng2

  • 1College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.

Science Advances
|May 14, 2025
PubMed
Summary
This summary is machine-generated.

We developed a low-cost, miniaturized spectrometer using plastics that operates across the visible to short-wave infrared range. This innovative spectral device is suitable for mass production and integration into consumer technology.

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Spectroscopy

Background:

  • Miniaturized spectroscopic tools are crucial for broader applications in science, industry, and consumer electronics.
  • Current miniaturized spectrometers face limitations in spectral range, fabrication scalability, cost, and complexity.
  • Operation across the visible to short-wave infrared (SWIR) spectrum is a key requirement for commercial viability.

Purpose of the Study:

  • To report a novel, low-cost, miniaturized spectrometer design.
  • To enable broadband spectral measurements from visible to SWIR wavelengths.
  • To demonstrate a scalable, nonlithographic fabrication method for spectroscopic devices.

Main Methods:

  • Engineering planar dispersive elements from readily available plastics using a mass-producible, nonlithographic method.
  • Encoding spectral information by deforming shape memory epoxies.
  • Processing spectral data using a complementary metal oxide semiconductor (CMOS) sensor array and algorithmic reconstruction.

Main Results:

  • Achieved broadband spectral capability from 400 to 1600 nanometers.
  • Demonstrated a low-cost, miniaturized spectrometer design.
  • Enabled line-scanning spectral imaging functionality.

Conclusions:

  • The developed spectrometer design offers a cost-effective and scalable solution for visible to SWIR spectral analysis.
  • The use of mass-producible plastics and shape memory epoxies overcomes limitations of existing miniaturized spectrometers.
  • This technology paves the way for affordable, integrated spectroscopic devices in various domains.