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

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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.
Atomic Fluorescence Spectroscopy01:29

Atomic Fluorescence Spectroscopy

Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which are...
Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

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.
The atomizer used in AAS can be either a flame atomizer or an...

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Related Experiment Video

Updated: Jun 6, 2026

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
07:55

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

Published on: September 22, 2017

Circular-array optical-fiber probe for backscattering photon correlation spectroscopy measurements.

M Brenci, A Mencaglia, A G Mignani

    Applied Optics
    |December 15, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A new miniaturized probe analyzes colloidal solutions using photon correlation spectroscopy (PCS). This compact system was validated for accuracy in various colloidal sample types.

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    Published on: June 6, 2017

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    Scanning Light Scattering Profiler (SLPS) Based Methodology to Quantitatively Evaluate Forward and Backward Light Scattering from Intraocular Lenses

    Published on: June 6, 2017

    Area of Science:

    • Materials Science
    • Analytical Chemistry
    • Optical Engineering

    Background:

    • Photon Correlation Spectroscopy (PCS) is a powerful technique for characterizing particle size in colloidal systems.
    • Traditional PCS setups can be bulky and require significant sample volumes.
    • Miniaturization of analytical probes is crucial for point-of-care diagnostics and in-situ monitoring.

    Purpose of the Study:

    • To design and develop a miniaturized optical probe for colloidal solution analysis.
    • To integrate a circular fiber array with a graded-index microlens for enhanced light collection.
    • To validate the probe's performance for Photon Correlation Spectroscopy (PCS) measurements.

    Main Methods:

    • Fabrication of a miniaturized probe with a circular optical fiber array and a graded-index microlens.
    • Experimental validation using Photon Correlation Spectroscopy (PCS).
    • Testing with monodisperse and bimodal colloidal solutions in both bulk and small-drop formats.

    Main Results:

    • Successful design and implementation of a miniaturized PCS probe.
    • Demonstrated suitability of the probe for accurate PCS measurements.
    • Validation across different colloidal sample types and volumes.

    Conclusions:

    • The miniaturized probe is effective for analyzing colloidal solutions via PCS.
    • The probe offers a compact and versatile alternative for particle size analysis.
    • This technology has potential applications in various fields requiring colloidal characterization.