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Related Experiment Video

Updated: May 7, 2026

Multimodal Nonlinear Hyperspectral Chemical Imaging Using Line-Scanning Vibrational Sum-Frequency Generation Microscopy

Multimodal Nonlinear Hyperspectral Chemical Imaging Using Line-Scanning Vibrational Sum-Frequency Generation Microscopy

Published on: December 1, 2023

Static hyperspectral fluorescence imaging of viscous materials based on a linear variable filter spectrometer.

Patrik J Murr¹, Michael Schardt, Alexander W Koch

¹Institute for Measurement Systems and Sensor Technology, Technische Universität München, Theresienstrasse 90/N5, Munich 80333, Germany. patrik.murr@tum.de.

Sensors (Basel, Switzerland)

|September 26, 2013

Summary

This study introduces a low-cost hyperspectral imaging setup for detecting impurities in viscous materials using fluorescence. The system achieves high-resolution imaging and can identify particles down to the nanometer range.

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Multimodal Nonlinear Hyperspectral Chemical Imaging Using Line-Scanning Vibrational Sum-Frequency Generation Microscopy

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Excitation-Scanning Hyperspectral Imaging Microscopy to Efficiently Discriminate Fluorescence Signals

Excitation-Scanning Hyperspectral Imaging Microscopy to Efficiently Discriminate Fluorescence Signals

Published on: August 22, 2019

Area of Science:

Spectroscopy
Materials Science
Analytical Chemistry

Background:

Hyperspectral imaging offers detailed spectral information for material analysis.
Detecting impurities in viscous materials is crucial for quality control.
Existing methods may lack cost-effectiveness or resolution.

Purpose of the Study:

To develop and validate a low-cost hyperspectral measurement setup for fluorescence detection.
To enable the imaging and detection of fluorescent and non-fluorescent impurities in viscous materials.
To demonstrate the capability of identifying micro-scale surfaces and nano-scale particles.

Main Methods:

Utilized a narrow-band light-emitting diode (LED) at 370 nm for illumination.
Employed a linear variable filter (LVF) covering 400-700 nm with a complementary metal oxide semiconductor (CMOS) 2D sensor.
Performed static measurements on fluorescent viscous materials with non-fluorescent impurities.

Main Results:

Successfully acquired hyperspectral fluorescence images of viscous materials.
Demonstrated detection of both fluorescent and non-fluorescent impurities.
Achieved measurement surface resolution in the micrometer range and minimum particle size detection in the nanometer range.
Confirmed recording rates in the microsecond range.

Conclusions:

The presented low-cost hyperspectral setup is effective for impurity detection in viscous materials.
The system offers high sensitivity and resolution for micro/nano-scale analysis.
This technology has potential applications in quality control and material characterization.