Papers

20 results
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Article Tier 2

Polarization digital holography for advanced classification of microplastic particles

Researchers developed a polarization digital holography approach for classifying microplastic particles based on their optical birefringence properties, requiring minimal sample preparation. The non-destructive method can distinguish microplastics from biological material by detecting how particles alter light polarization states.

2025
Article Tier 2

Holographic and polarization features analysis for microplastics characterization and water monitoring

Researchers explored digital holography and polarization imaging as a combined technique for characterizing and classifying microplastics in water, computing features including angle of polarization (AoP) and degree of linear polarization (DoLP) to distinguish microplastics from biological and natural particles. The method demonstrated potential for real-time, non-contact, in situ microplastic detection and water quality monitoring.

2023 4 citations
Article Tier 2

Smart polarization and spectroscopic holography for real-time microplastics identification

Researchers developed a new optical imaging system called SPLASH that simultaneously captures polarization, holographic, and texture data from tiny particles — without needing a traditional spectrometer — and used machine learning to identify different types of microplastics with high accuracy. This approach could enable faster, more practical real-time monitoring of microplastic pollution in water.

2024 Communications Engineering 30 citations
Article Tier 2

High-throughput microplastic assessment using polarization holographic imaging

Researchers built a portable, low-cost system that uses holographic imaging and polarized light combined with deep learning to automatically detect, count, and classify microplastics in water in real time — without lengthy sample preparation. This tool significantly speeds up microplastic monitoring and could be widely deployed for environmental surveillance.

2024 Scientific Reports 36 citations
Article Tier 2

Polarization Holographic Imaging for High-throughput Microplastic Analysis

Researchers developed a polarization holography system integrated with deep learning for high-throughput microplastic detection and analysis in aqueous environments. The system enables dynamic, real-time multimodal monitoring of microplastics by leveraging polarization contrast to distinguish particles in liquid samples.

2023 3 citations
Article Tier 2

Intelligent Digital Holographic systems to counteract microplastic pollution in marine waters

Researchers developed a digital holography system capable of detecting and classifying microplastic particles in seawater in a label-free, high-throughput manner. The system can identify plastic particles that are otherwise invisible to the naked eye and can be adapted for use with microfluidic devices. This technology offers a faster and more compact alternative to traditional microscopy methods for marine microplastic monitoring.

2022 2022 IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea) 4 citations
Article Tier 2

Toward an All-Optical Fingerprint of Synthetic and Natural Microplastic Fibers by Polarization-Sensitive Holographic Microscopy

Researchers developed a polarization-sensitive digital holographic microscopy method that can generate unique all-optical fingerprints to distinguish synthetic microplastic fibers from natural fibers in water without destroying the sample.

2022 ACS Photonics 33 citations
Article Tier 2

Compact holographic microscope for imaging flowing microplastics

Researchers developed a compact holographic microscope capable of imaging flowing microplastics in aquatic environments, providing a fast, quantitative method for real-time characterization of plastic particle size and shape distributions.

2021 7 citations
Article Tier 2

Polarization-sensitive digital holography for microplastic identification through scattering media

Researchers designed a polarization-sensitive holographic imaging system capable of identifying transparent microplastics through scattering media by measuring the degree of linear polarization (DoLP) as an angle-independent discriminating feature. The system enables non-destructive differentiation of microplastic types in turbid or complex optical environments where conventional imaging methods fail.

2023 3 citations
Article Tier 2

Digital holographic microplastics detection and characterization in heterogeneous samples via deep learning

Researchers used digital holographic microscopy combined with deep learning to detect and characterize microplastic particles in heterogeneous samples containing algae, microorganisms, and other natural particles. This automated approach could improve the speed and accuracy of environmental microplastic monitoring.

2021 Twelfth International Conference on Information Optics and Photonics 7 citations
Article Tier 2

Material analysis with polarization holography and machine learning

Researchers developed a polarization holographic imaging system combined with machine learning to identify different materials, demonstrating the approach on microplastic identification. This novel optical method could become a fast, non-destructive tool for classifying microplastics in environmental samples.

2023 1 citations
Article Tier 2

Microplastic pollution monitoring with holographic classification and deep learning

This study used digital holographic microscopy combined with deep learning to classify microplastic particles in water samples, achieving high classification accuracy and demonstrating the potential for automated, high-throughput microplastic monitoring.

2021 Journal of Physics Photonics 67 citations
Article Tier 2

In-situ and real-time nano/microplastic coatings and dynamics in water using nano-DIHM: A novel capability for the plastic life cycle research

Researchers used a novel nano-digital inline holographic microscope to study nano- and microplastic particles in real time in water, revealing distinct coating patterns on particle surfaces and dynamic aggregation behaviors that standard offline methods miss.

2023 Water Research 19 citations
Article Tier 2

Microplastic Identification via Holographic Imaging and Machine Learning

Researchers combined holographic imaging with machine learning algorithms to automatically identify and classify microplastics in water samples, achieving accurate particle detection without manual microscopy. This automated approach could significantly speed up microplastic monitoring in environmental samples.

2019 Advanced Intelligent Systems 155 citations
Article Tier 2

Snapshot Polarization-Sensitive Holography for Detecting Microplastics in Turbid Water

Researchers developed a new imaging technique combining holography and polarimetry to detect microplastic particles in turbid water, a setting where traditional detection methods struggle. The approach uses differences in how light polarizes when passing through plastic versus natural particles to distinguish microplastics even in murky conditions. The study demonstrates a promising tool for faster, more practical monitoring of microplastic pollution in real-world water environments.

2023 ACS Photonics 27 citations
Article Tier 2

Automatic Detection of Microplastics by Deep Learning Enabled Digital Holography

Researchers developed a digital holography system combined with deep learning to automatically detect and identify microplastics in water without manual image analysis. The system processes raw holographic images directly, offering a faster and more scalable approach to microplastic monitoring in environmental samples.

2020 Imaging and Applied Optics Congress 12 citations
Article Tier 2

Identification of microplastics in wastewater samples by means of polarized light optical microscopy

Scientists tested polarized light optical microscopy as a rapid method for identifying microplastics in wastewater samples, finding it could distinguish synthetic polymer particles from natural debris based on their optical properties without requiring expensive spectroscopy equipment.

2019 Environmental Science and Pollution Research 120 citations
Article Tier 2

In-situ Detection Method for Microplastics in Water by Polarized Light Scattering

Researchers developed an in-situ detection method for microplastics in water using polarized light scattering at 120 degrees, enabling real-time measurement of individual particles without sample collection or laboratory processing.

2021 Frontiers in Marine Science 35 citations
Article Tier 2

Computational polarized holography for automatic monitoring of microplastics in scattering aquatic environments

Researchers developed an integrated imaging system based on computational polarized holography for automatic monitoring of microplastics in aquatic environments. The system enables accurate 3D tracking of dynamic microplastic particles, and a hybrid de-scattering algorithm substantially improves image quality even in turbid water conditions. An unsupervised clustering method was also developed to identify and classify different microplastics based on their multimodal features without manual annotation.

2025 APL Photonics 5 citations
Article Tier 2

Real-Time Quantification of Microplastics in Aquatic Systems via Fluorescence Microscopy

Researchers developed a real-time fluorescence microscopy method capable of quantifying microplastics in aquatic systems with high precision, providing a faster and more accessible tool for monitoring microplastic contamination in drinking water reservoirs.

2023