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Papers
20 resultsShowing papers similar to MXene-supported AgNPs in smart hydrogels: Shrink-enabled amplification for high-performance multi-channel SERS sensing.
ClearHighly Scalable, Wearable Surface‐Enhanced Raman Spectroscopy
Researchers developed highly scalable wearable surface-enhanced Raman spectroscopy (SERS) sensors capable of detecting molecular-level chemical information from the skin, advancing the field of non-invasive chemical sensing with potential applications in environmental exposure monitoring.
Flexible ThermoelectricAg Film/PEDOT:PSS/AgNPs Composites:Toward Universal and Ultrasensitive Sensing
Researchers integrated thermoelectric PEDOT:PSS with silver nanoparticles and silver films to construct a flexible SERS platform, demonstrating that the thermoelectric field actively modulates AgNP carrier concentration to boost both chemical and electromagnetic Raman enhancement. The platform achieved microplastic detection limits of 0.005% and SARS-CoV-2 spike protein detection at 10^-8 M, with the thermoelectric effect enabling active performance regulation.
Recent Implementations of Hydrogel-Based Microbial Electrochemical Technologies (METs) in Sensing Applications
This systematic review found that hydrogel-based microbial electrochemical technologies show strong potential for biosensor applications, particularly in detecting water contaminants and monitoring environmental quality. Hydrogels improve biofilm stability and electrode performance in microbial fuel cells used as sensing platforms.
Flexible Thermoelectric Ag Film/PEDOT:PSS/AgNPs Composites: Toward Universal and Ultrasensitive Sensing
Researchers developed a multifunctional flexible SERS substrate by integrating thermoelectric PEDOT:PSS with silver nanoparticles and silver films, finding that the thermoelectric field modulated carrier concentration in AgNPs to enhance chemical and electromagnetic Raman sensitivity. The optimised composite achieved detection limits of 0.005% for microplastics and 10^-8 M for SARS-CoV-2 spike protein, demonstrating broad ultrasensitive sensing capability.
SERS Detection of Hydrophobic Molecules: Thio-β-Cyclodextrin-Driven Rapid Self-Assembly of Uniform Silver Nanoparticle Monolayers and Analyte Trapping
A thio-β-cyclodextrin-mediated self-assembly protocol created compact silver nanoparticle monolayers at oil/water interfaces within 40 seconds, enabling high-sensitivity SERS detection of hydrophobic molecules by entrapping analytes within plasmonic hotspots.
DC Versus ACElectrokinetic-Driven Strategy Coupledwith a Miniaturized Electrochemical-SERS Hydrogel Chip toward DynamicMonitoring of Microplastics
Researchers developed a miniaturized electrochemical-SERS hydrogel chip functionalized with poly(vinyl alcohol oxide)-gold nanoparticle composites and compared DC versus AC electrokinetic driving strategies for dynamic detection of microplastics, finding that AC operation enabled more versatile interfacial molecular control than DC approaches.
Surface-enhanced Raman scattering as a potential strategy for wearable flexible sensing and point-of-care testing non-invasive medical diagnosis
This review summarizes the development of wearable surface-enhanced Raman scattering (SERS) sensors for non-invasive point-of-care medical diagnosis, highlighting novel nanostructures and silk fibroin substrates as promising platforms for flexible health monitoring devices.
A simple and rapid preparation of Au-Ag alloy nanourchins flexible membrane for ultrasensitive SERS detection of microplastics in water environment
Researchers fabricated flexible gold-silver alloy nanourchins on a membrane substrate and demonstrated their use as a SERS sensor for rapid, sensitive detection of microplastics in water, achieving detection of multiple polymer types at low concentrations without complex sample preparation.
Bacterial Nanocellulose Membrane Deposited with Silver Nanoparticles for SERS Detection of Microplastics
Researchers developed a flexible surface-enhanced Raman scattering (SERS) substrate by depositing well-dispersed silver nanoparticles onto bacterial nanocellulose membranes, achieving a Raman signal enhancement factor of up to 331 for polyethylene solutions at 0.1 g/L. The substrate combines the electromagnetic enhancement of AgNPs with the flexible, porous structure of bacterial nanocellulose for practical microplastic detection applications.
Flexible, Transparent, and Microfluidic-Compatible Wafer-Scale Metamaterial Sheets for Dual SEF and SERS Sensing
A flexible, transparent, and microfluidic-compatible sensor fabricated at the wafer scale was developed for detecting particles in water, with applications for microplastic detection. The device advances miniaturized, on-chip analysis of microplastics suitable for integration into portable monitoring tools.
Hydrogel‐based surface‐enhanced Raman spectroscopy for food contaminant detection: A review on classification, strategies, and applications
This review covers hydrogel-based surface-enhanced Raman spectroscopy (SERS) substrates for detecting food contaminants. It is not about microplastics and is not relevant to microplastic research.
Hydrogen Bonding-BasedSERS Method for the Ultrahigh-SensitiveDetection of Nanoplastics in Water
Researchers developed a hydrogen bonding-based SERS strategy using cysteine-modified silver nanoparticles for ultratrace detection of polystyrene nanoplastics in water, achieving detection limits of 50 ng/L and a linear dynamic range spanning 2-3 orders of magnitude across particle sizes of 50-800 nm. Spike-and-recovery experiments in tap water yielded recoveries of 86.7-106.6%, confirming the method's applicability to real water samples.
Progress, challenge and perspective of hydrogels application in food: a review
Researchers reviewed how hydrogels — water-absorbing polymer networks — can be engineered to detect and remove food contaminants including microplastics, heavy metals, and pesticides, as well as to extend food shelf life. While hydrogels show broad promise for food safety applications, the review notes challenges around scalability and the need for further real-world testing.
Efficient silver-based hybrid nano-assemblies for polystyrene nanoparticles SERS detection
Researchers built nanoscale silver-silicon hybrid platforms that can detect polystyrene nanoplastics using a technique called surface-enhanced Raman spectroscopy. The platforms achieved high sensitivity with detection limits in the microgram-per-milliliter range. The technology offers a promising approach for identifying nanoscale plastic particles that are too small for conventional detection methods.
Plasmonic Coacervate as a Droplet-Based SERS Platform for Rapid Enrichment and Microanalysis of Hydrophobic Payloads
Researchers developed a coacervate microdroplet platform incorporating silver nanoparticles as a surface-enhanced Raman scattering (SERS) substrate for detecting and quantifying trace hydrophobic contaminants, including those associated with microplastics. The platform demonstrated effective enrichment and sensitive detection of hydrophobic analytes, offering a droplet-based approach for microplastic-associated pollutant analysis.
Quantitative detecting low concentration polystyrene nanoplastics in aquatic environments via an Ag/Nb2CT (MXene) SERS substrate
Researchers fabricated an Ag nanoparticle-decorated MXene composite SERS substrate that detects polystyrene nanoplastics down to 10 mg/mL in lake water with high accuracy and recovery rates of 95–107%, and can distinguish nanoplastic types in mixtures using their Raman fingerprint spectra.
Flexible, Transparent,and Microfluidic-CompatibleWafer-Scale Metamaterial Sheets for Dual SEF and SERS Sensing
Researchers developed flexible, transparent, wafer-scale metamaterial sheets capable of simultaneously performing surface-enhanced fluorescence and surface-enhanced Raman spectroscopy sensing, addressing long-standing challenges around dielectric spacers and limited plasmonic resonance band coverage in microfluidic-compatible formats.
A Highly Sensitive SERS Substrate for Detection of Nanoplastics in Water
Researchers developed a highly sensitive SERS-based substrate for detecting nanoplastic particles in water at very low concentrations. Improved detection tools for nanoplastics are essential for monitoring their presence in drinking water and understanding exposure risks to human health.
Stable and Reusable Lace-like Black Silicon Nanostructures Coated with Nanometer-Thick Gold Films for SERS-Based Sensing
Researchers developed a simple method for producing gold-coated black silicon nanostructures as reusable SERS substrates with an enhancement factor of 10^6, enabling sensitive and cost-effective chemical detection for sensing applications.
Semiconductor Heterojunction-AgNPs Mediated Surface-Enhanced Raman Spectroscopy (SERS) Sensor for Portable Miniaturized Detection Platform
Researchers developed a novel surface-enhanced Raman spectroscopy sensor for detecting micro- and nanoplastics in water, achieving detection of polystyrene particles as small as 1 nanometer. The sensor uses a semiconductor heterojunction with silver nanoparticle array that provides high sensitivity and signal repeatability. The study demonstrated successful trace detection of nanoplastics in real lake and city water samples using a portable spectrometer, making field-based monitoring more feasible.