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Papers
20 resultsShowing papers similar to Detection of microplastics via a confocal-microscope spatial-heterodyne Raman spectrometer with echelle gratings
ClearDetection of microplastics via a frequency-shifted excitation confocal micro-differential, spatial heterodyne, Raman spectrometer with echelle-mirror structure
Researchers developed a microplastic detection system integrating frequency-shifted excitation differential spectroscopy, confocal microscopy, and spatial heterodyne Raman spectroscopy with an echelle-mirror structure, enabling more sensitive identification of microplastic particles.
Design of a confocal micro-Raman spectroscopy system and research on microplastics detection
Researchers built a custom confocal micro-Raman spectroscopy system designed to detect microplastics more cost-effectively than commercial instruments. The improved signal quality enables more accurate identification of plastic polymer types in environmental samples.
Detection of microplastic samples based on spatial heterodyne microscopic differential Raman spectroscopy
Researchers built a new optical instrument — spatial heterodyne microscopic differential Raman spectroscopy — specifically designed to identify microplastics more reliably than conventional detectors. The system achieved better signal-to-noise ratios for four common plastic types (PS, PC, PP, HDPE) and suppressed fluorescence interference, all without an expensive microscope. Better detection tools like this are essential for accurately measuring microplastic contamination in environmental samples.
Detection of microplastics based on splicing grating spatial heterodyne Raman spectroscopy
Researchers developed a new Raman spectroscopy technique using spliced gratings to detect and identify microplastics with improved accuracy and spectral range. The system achieved a spectral resolution of about 5.6 inverse centimeters and successfully identified common microplastic types including polyethylene, polypropylene, and polystyrene. This technology could make field-based microplastic monitoring faster and more reliable than current detection methods.
High-resolution, broad-spectral-range Raman measurement using a spatial heterodyne spectrometer with separate filters and multi-gratings
Researchers developed a spatial heterodyne Raman spectrometer with separate filters and multiple gratings that achieves high spectral resolution over a broad range in a single measurement, and demonstrated it can identify microplastics even in the presence of fluorescence interference. Better analytical tools like this are critical for accurately characterizing the types and quantities of microplastics in environmental samples.
Detection of microplastics based on spatial heterodyne Raman spectroscopy
Researchers developed a spatial heterodyne Raman spectroscopy method for detecting microplastics, offering advantages over existing techniques by reducing detection time, lowering false detection rates, and using more affordable equipment.
Identification of Microplastics Using a Custom Built Micro-Raman Spectrometer
Researchers built a custom micro-Raman spectrometer and demonstrated its use for identifying microplastic polymer types in environmental samples, achieving sensitive and specific polymer identification at particle sizes down to a few micrometers.
Fast Detection andClassification of Microplasticsby a Wide-Field Fourier Transform Raman Microscope
Researchers developed a wide-field hyperspectral Fourier transform Raman microscope for rapid detection and classification of microplastics extracted from environmental matrices. The instrument achieved high spatial resolution and chemical specificity across a large field of view, enabling faster throughput for microplastic identification compared to conventional point-scanning Raman approaches.
Rapid MicroplasticDetection Using High-ThroughputScreening Raman Spectroscopy
Researchers developed a high-throughput screening Raman spectroscopy system for rapid microplastic detection, overcoming the traditional tradeoff between spatial resolution, field of view, and analytical throughput to enable faster identification of plastic particles across environmental samples with low concentrations.
Super-resolution Raman imaging towards visualisation of nanoplastics
Super-resolution Raman imaging was evaluated as a method to visualize nanoplastics smaller than the conventional diffraction-limited laser spot size, overcoming a key barrier in nanoplastic characterization. The technique extends confocal Raman capabilities into the nanoscale detection range needed for environmental nanoplastic analysis.
Identification and visualisation of microplastics/ nanoplastics by Raman imaging (ii): Smaller than the diffraction limit of laser?
Researchers examined whether confocal Raman microscopy can identify and visualize nanoplastics smaller than the diffraction limit of the laser, analyzing the lateral intensity distribution of Raman signals from nanoplastics ranging from approximately 30 to 600 nm in diameter. The study found that while imaging resolution is limited by diffraction, chemical identification of sub-diffraction-limit nanoplastics remains possible.
Fluorescence-Guided Raman Spectroscopy with an Integrated Adapter for Faster and Cost-Effective Microplastic Detection
A fluorescence-guided Raman spectroscopy system with integrated adaptive optics was developed to improve detection of microplastics in complex environmental matrices. The instrument advances the sensitivity and speed of microplastic identification, supporting more thorough environmental monitoring.
Super-resolution imaging of micro- and nanoplastics using confocal Raman with Gaussian surface fitting and deconvolution
Researchers used confocal Raman imaging with Gaussian surface fitting to achieve super-resolution visualization of micro- and nanoplastics beyond the optical diffraction limit, enabling identification and imaging of nanoplastic particles smaller than conventional Raman microscopy can resolve.
Rapid Microplastic Detection Using High-Throughput Screening Raman Spectroscopy
Researchers developed a high-throughput Raman spectroscopy platform combining a 3.15 × 2.10 mm field of view with 1.4 µm spatial resolution for rapid label-free detection of microplastics. The system integrates automated particle recognition, autofocus correction, and spectral acquisition, significantly reducing analysis time compared to conventional micro-Raman approaches.
Fast Detection and Classification of Microplastics by a Wide-Field Fourier Transform Raman Microscope
Researchers developed a new wide-field Raman microscope that can rapidly detect and identify microplastic particles with high spatial and chemical accuracy. The instrument can image a large sample area in about 15 minutes and identify particles down to roughly one micrometer in size. The technology was validated on microplastics from seawater and biological samples, offering a faster alternative to existing detection methods.
Fast microplastics identification with stimulated Raman scattering microscopy
Stimulated Raman scattering microscopy was applied to rapidly identify and image microplastic particles in complex environmental samples at speeds dramatically faster than conventional Raman spectroscopy. The technique has potential to enable high-throughput microplastic analysis that could make large-scale environmental monitoring more feasible.
Study on Rapid Recognition of Marine Microplastics Based on Raman Spectroscopy
Researchers developed a rapid identification system for marine microplastics using Raman spectroscopy, enabling quick determination of plastic type and size. Fast, accurate identification tools are critical for monitoring the growing problem of microplastic pollution in ocean environments.
Fluorescent labelling combined with confocal differential Raman spectroscopy to detect microplastics in seawater
Researchers combined fluorescent labeling with confocal differential Raman spectroscopy to develop a rapid method for detecting microplastics in near-shore seawater, achieving efficient removal of organic matter interference through optimized sample pretreatment. The system demonstrated accurate identification of multiple polymer types in complex seawater matrices.
Raman Microspectroscopy: Improvement in Signal Generation and Collection to Facilitate Raman Spectroscopy
Advances in Raman microspectroscopy were reviewed for improving signal generation and analysis in microplastic identification, including new detector designs and data processing algorithms. Enhanced Raman spectroscopy capabilities enable faster and more accurate polymer identification at smaller particle sizes.
Misinterpretation in microplastic detection in biological tissues: When 2D imaging is not enough
Researchers demonstrated that 2D Raman imaging alone can misidentify microplastics in biological tissues, showing that 3D confocal Raman imaging is necessary to accurately distinguish microplastic particles from tissue components in mussels.