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Papers
61,005 resultsShowing papers similar to Optofluidic Tweezers: Efficient and Versatile Micro/Nano-Manipulation Tools
ClearFluorescence Imaging-Activated Microfluidic Particle Sorting Using Optical Tweezers
This study developed a fluorescence imaging-activated microfluidic sorting system using optical tweezers to precisely isolate microscopic particles based on their fluorescent signal, enabling high-throughput separation of microplastics from complex environmental or biological samples.
Investigation of the Optical Trapping Properties of Microplastics
This study measured the optical trapping properties of various lab-made microplastics to understand how light interacts with these particles. Optical tweezers can be used to manipulate and study individual microplastic particles, which may improve our ability to characterize plastic pollution at small scales.
Rapid trapping and label-free optical characterization of single nanoscale extracellular vesicles and nanoparticles in solution
Researchers developed Interferometric Electrohydrodynamic Tweezers, an integrated optofluidic platform combining rapid electrohydrodynamic trapping with interferometric scattering and Raman spectroscopy, enabling single nanoparticle characterization of size and chemical composition within seconds — demonstrated on polymer beads and extracellular vesicles.
Plasmonic Dielectric Antennas for Hybrid Optical Nanotweezing And Optothermoelectric Manipulation of Single Nanosized Extracellular Vesicles
Researchers experimentally demonstrated near-field optical trapping and dynamic manipulation of individual extracellular vesicles using a plasmonic dielectric nanoantenna designed to support an optical anapole state. The technique offers a new tool for studying and manipulating nanoscale biological particles without mechanical contact.
Optical tweezers in a dusty universe
Researchers explored how optical tweezers — tools that use focused laser beams to grip and manipulate microscopic particles — could be applied to trap and study dust particles from space or planetary surfaces. While focused on astrophysics, the same principles could potentially be adapted to study and characterize microplastic and nanoplastic particles in research settings.
Optical and Raman tweezers for the manipulation and characterization of cosmic dust and sea microplastics
Researchers used optical and Raman laser tweezers to manipulate and identify individual micro- and nanoplastic particles and cosmic dust grains. The technique can characterize particle composition and fragmentation behavior, offering a powerful new approach for studying how microplastics break down in the ocean.
Entry of Microparticles into Giant Lipid Vesicles by Optical Tweezers
Researchers used optical tweezers to study how microparticles cross lipid membrane barriers in giant vesicles, a model for cell membranes. Understanding how particles at the microscale penetrate biological membranes is directly relevant to how microplastics may enter cells and tissues in living organisms.
Flow Plastometry of Microplastics Using Optical Line Tweezers
Researchers developed a novel system using Raman spectroscopy combined with optical line tweezers to simultaneously analyze the shape and chemical composition of microplastics flowing through a channel. The technique can capture and characterize particles as small as 500 nanometers, offering a potential tool for real-time monitoring of microplastics in water environments.
Investigation of Soft Matter Nanomechanics by Atomic Force Microscopy and Optical Tweezers: A Comprehensive Review
This review covers how atomic force microscopy and optical tweezers are used to measure the mechanical properties of soft materials like cells, proteins, and gels at the nanoscale. While not directly about microplastics, these tools are increasingly used to study how nano- and microplastic particles interact with cell membranes and biological tissues. Understanding these interactions at the molecular level helps explain how microplastics cause physical damage to cells.
Scalable trapping of single nanosized extracellular vesicles using plasmonics
Researchers developed a plasmonic nanotweezers system capable of stably trapping individual nanosized extracellular vesicles, overcoming the diffraction limit of conventional optical tweezers and enabling characterization of heterogeneous nanoparticle populations relevant to disease diagnostics.
Entry of microparticles into giant lipid vesicles by optical tweezers
Using optical tweezers to apply precise forces, this study showed that microparticles can be pushed through lipid membrane vesicles — a model for cell membranes — when external mechanical force is applied and membrane tension is low. The findings provide mechanistic insight into how microplastics might physically cross cell membranes and enter cells, a key step in understanding potential cellular toxicity.
Optofluidic light-droplet interaction for rapidly assessing the presence of plastic microspheres within aqueous suspensions
Researchers developed an optofluidic system that uses light-droplet interactions to rapidly detect the presence of plastic microspheres in water. The study demonstrates a new sensing methodology that could enable faster and more practical screening for microplastic contamination in aquatic environments.
Droplet-based Opto-microfluidic Device for Microplastic Sensing in Aqueous Solutions
Researchers developed a microfluidic device using light to detect plastic microspheres in water droplets, offering a new tool for identifying microplastic contamination in aquatic environments.
Raman Tweezers for Small Microplastics and Nanoplastics Identification in Seawater
Researchers used Raman tweezers - optical tweezers combined with Raman spectroscopy - to capture and chemically identify individual small microplastic and nanoplastic particles in seawater samples in situ. This novel technique could enable real-time identification of the smallest plastic particles in marine environments, filling a critical gap in nano- and micro-plastic detection.
Investigation of single sea microplastics by optical and Raman tweezers
Researchers investigated individual seawater microplastic particles using optical and Raman tweezers, applying laser-based trapping techniques to enable contactless manipulation and chemical characterization of single microplastic particles collected directly from the marine environment.
Investigation of single sea microplastics by optical and Raman tweezers
Researchers investigated individual seawater microplastic particles using optical and Raman tweezers, applying laser-based trapping techniques to enable contactless manipulation and chemical characterization of single microplastic particles collected directly from the marine environment.
Nanoplastic Analysis by Online Coupling of Raman Microscopy and Field-Flow Fractionation Enabled by Optical Tweezers
Researchers developed a new analytical technique for detecting nanoplastics by combining field-flow fractionation with online Raman microspectroscopy, using optical tweezers to trap particles and overcome weak scattering signals. The method successfully identified polymer and inorganic particles ranging from 200 nm to 5 micrometers at concentrations around 1 mg/L.
Optofluidic Force Induction Meets Raman Spectroscopy and Inductively Coupled Plasma-Mass Spectrometry: A New Hyphenated Technique for Comprehensive and Complementary Characterizations of Single Particles
Researchers developed a new analytical technique that combines optical trapping, Raman spectroscopy, and mass spectrometry to characterize individual nanoparticles in a single measurement. The method can identify the chemical composition, elemental makeup, and size of particles one at a time. While demonstrated on engineered nanoparticles, this technology could eventually be applied to detect and characterize individual nanoplastic particles in environmental and biological samples.
Manipulating nanoparticles based on a laser photothermal trap
Researchers developed a laser-based photothermal trap for precise directional manipulation of nanoparticles. The technique uses localized heating to generate fluid flows that move nanoparticles in a controlled direction. While focused on optics and nanoparticle manipulation, the method could potentially be adapted for concentrating nanoplastic particles from liquid samples.
Miniaturization of Sensor Systems for Marine Environmental Measurement Based on Optofluidic Technology
This paper reviews advances in miniaturised optofluidic sensor systems for marine environmental monitoring, with applications to detecting pollutants including microplastics. It evaluates current technologies and highlights the potential of integrated optical and microfluidic platforms for in situ, low-cost ocean surveillance.
Real-Time Underwater Nanoplastic Detection beyond the Diffusion Limit and Low Raman Scattering Cross-Section via Electro-Photonic Tweezers
Researchers developed an electro-photonic tweezer system using AC electro-osmotic flows and dielectrophoretic forces to actively concentrate and detect nanoplastics in real time underwater, overcoming detection limits posed by their tiny size and ultralow concentrations.
Detection and analysis of microplastics in the subtropical ocean of Okinawa using micro-Raman Optical Tweezers
Micro-Raman optical tweezers were used to isolate and identify individual microplastic particles from seawater samples collected off Okinawa, demonstrating that this single-particle technique can characterize polymer composition of very small particles that are difficult to detect with conventional methods.
Optical trapping studies of irregularly shaped microplastic particles
Researchers used optical tweezers coupled with Raman spectroscopy to characterize the trapping behavior of irregularly shaped microplastic particles from household plastics (PP, PET, HDPE) and beach-collected samples, building a database revealing how shape, composition, and size influence trapping stability.
Optofluidic light-droplet interaction for rapidly assessing the presence of plastic microspheres within aqueous suspensions
Scientists developed a new device that can quickly detect tiny plastic particles (called microplastics) in water by shining light through water droplets and measuring how much light gets blocked. The device can spot extremely small amounts of plastic pollution - even particles smaller than the width of a human hair. This technology could help us better monitor plastic contamination in drinking water and the environment, which is important since these tiny plastics can harm both ecosystems and human health.