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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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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).
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Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

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Published on: January 3, 2016

Micro-spectrometer based on a broadband gradient plasmonic nano-islands filter.

Huameng Li, Rubo Chen, Hongru Li

|November 27, 2024

Summary

Researchers developed a miniature spectrometer using a plasmonic nano-island filter. This device achieves high-resolution spectral reconstruction, enabling advanced applications in biomedical and environmental science.

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

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Last Updated: Jul 17, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

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Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

Area of Science:

Micro- and nano-optics
Plasmonics
Spectroscopy

Background:

Micro-spectral analyzers are crucial for biomedical and environmental science.
Advancements in micro-optics and spectral reconstruction enhance device performance.
Miniature spectrometers offer portability, precision, and versatility.

Purpose of the Study:

To propose and demonstrate a computationally reconstructed miniature spectrometer.
To utilize a linear gradient Ag/Au mixed-metal plasmonic nano-islands filter.
To achieve broad operating wavelength bands and high spectral resolution.

Main Methods:

Fabrication of a plasmonic nano-islands filter on a quartz substrate using sputtering and annealing.
Expansion of transmission spectra (250-900 nm) by controlling nano-island properties and refractive index.
Spectral reconstruction in the visible range (420-720 nm) using compressed sensing and l1-norm minimization.

Main Results:

Angle-insensitive operation up to 35° incident angle.
Reconstructed spectrum resolution up to 0.6 nm with wavelength accuracy within 0.4 nm.
Low root mean square error (RMSE) below 0.05 for monochromatic and 0.07 for broadband light.

Conclusions:

The study demonstrates a high-performance, angle-insensitive micro-spectrometer.
The developed technology offers valuable insights for creating highly integrated spectrometers.
This advancement supports broader applications in complex scientific fields.