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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

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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....
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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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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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Advances in cost-effective integrated spectrometers.

Ang Li1,2, Chunhui Yao3, Junfei Xia3

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Summary
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Miniaturized optical spectrometers are crucial for Internet-of-Things applications, but manufacturability and real-world performance metrics need improvement. This review explores chip-scale spectrometer trends and CMOS-compatible fabrication for mass production.

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Area of Science:

  • Optoelectronics
  • Spectroscopy
  • Materials Science

Background:

  • Internet-of-Things (IoT) proliferation drives demand for compact, lightweight, and low-cost optical spectrometers.
  • Existing miniaturized spectrometers often prioritize technical advancement over manufacturability and real-world application metrics.

Purpose of the Study:

  • To review market trends for chip-scale spectrometers.
  • To analyze key metrics for adopting miniaturized spectrometers in real-life applications.
  • To summarize progress in spectrometer miniaturization, focusing on CMOS-compatible platforms.

Main Methods:

  • Literature review of miniaturized spectrometer advancements.
  • Analysis of market trends and key performance indicators for chip-scale spectrometers.
  • Evaluation of CMOS-compatible fabrication techniques for mass production.

Main Results:

  • Significant progress in spectrometer miniaturization exists, but manufacturability remains a challenge.
  • A gap persists between spectrometer performance and real-world application requirements.
  • CMOS-compatible fabrication offers a viable pathway for mass-producing miniaturized spectrometers.

Conclusions:

  • Addressing manufacturability and performance-to-application metrics is critical for widespread adoption of chip-scale spectrometers.
  • CMOS-compatible platforms are key to enabling mass production and future development.
  • Further research should focus on bridging the gap between technical specifications and practical application needs.