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Related Concept Videos

Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...

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Related Experiment Video

Updated: Jun 16, 2026

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
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Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

[A CMOS vertically integrated device for monochromatic spectrum detection].

Yuan Chen1, Zhi-Hai Xu, Hua-Jun Feng

  • 1State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China. cy@zju.edu.cn

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|January 28, 2010
PubMed
Summary
This summary is machine-generated.

This study presents a novel CMOS sensor capable of detecting specific wavelengths in light. The sensor

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Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers
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Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms
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Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers
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Multicolor Fluorescence Detection for Droplet Microfluidics Using Optical Fibers

Published on: May 5, 2016

Area of Science:

  • Optoelectronics
  • Semiconductor device physics
  • Integrated circuit design

Context:

  • Standard CMOS fabrication processes are widely used for electronic device manufacturing.
  • Accurate wavelength detection is crucial for various applications, including spectroscopy and optical sensing.
  • Existing methods for wavelength sensing may have limitations in terms of integration, cost, or performance.

Purpose:

  • To design, manufacture, and test a vertically integrated sensor for monochromatic spectrum wavelength detection.
  • To leverage a two-layer device structure for simultaneous sensing of short and long wavelengths.
  • To demonstrate a monotonically increasing response with wavelength for accurate identification.

Summary:

  • A vertically integrated sensor was developed using a standard CMOS process.
  • The sensor utilizes a two-layer structure to simultaneously detect short and long wavelengths (near UV, visible, near IR).
  • The device exhibits a monotonic response to wavelength, enabling accurate wavelength determination, with measured Quantum Efficiencies (QEs) provided.

Impact:

  • Enables cost-effective, integrated wavelength sensing solutions.
  • Potential applications in optical spectroscopy, environmental monitoring, and industrial process control.
  • Advances the field of on-chip optical sensing with a novel CMOS-compatible approach.