Single-beam optical trap-based surface-enhanced raman scattering optofluidic molecular fingerprint spectroscopy detection system

Opto-Electronic Advances, Journal Year: 2025, Volume and Issue: 0(0), P. 240182 - 240182

Published: Jan. 1, 2025

Language: Английский

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Unraveling Plasmonic Field Contributions in Catalysis with Au@Al₂O₃‐Pd‐Au@Al₂O₃ Trimer Arrays

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 17, 2025

Abstract Plasmonic catalysis employs nanomaterials to mediate the conversion of photon energy into localized electromagnetic fields, hot carriers, and thermal energy, facilitating molecular transformations under mild conditions. Understanding mechanisms governing plasmonic effects is crucial for optimizing yield selectivity in catalysis. However, challenges persist elucidating role field due complex interactions among various contributing mechanisms. This study introduces Au@Al 2 O 3 ‐Pd‐Au@Al trimer arrays decouple from other influences. The alumina coating on Au particles prevents charge transfer between gold reactants, enabling focused examination Pd catalysts. Employing real‐time monitoring with liquid‐state surface‐enhanced Raman scattering (SERS), this work investigates catalytic efficiency kinetics C─C coupling reactions palladium by tuning near‐field strengths. Polarization‐dependent studies reveal that strong intensity around structures amplified ≈60‐fold optimized findings offer insights reaction conditions designing more effective composite

Language: Английский

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Metallic bowtie antenna for an ultrahigh plasmonic-based improvement of Raman scattering process

Micro and Nanostructures, Journal Year: 2025, Volume and Issue: 200, P. 208082 - 208082

Published: Feb. 1, 2025

Language: Английский

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All-Flexible Chronoepifluidic Nanoplasmonic Patch Allows Label-free Sweat Profiling

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Wearable sweat sensors allow non-invasive metabolic profiling for timely intervention in proactive healthcare. However, molecular recognition elements conventional still hinder a comprehensive understanding of an individual's unique physiological profile. Here we report all-flexible chronoepifluidic surface-enhanced Raman spectroscopy (SERS) patch (CEP-SERS patch) label-free profiling. The CEP-SERS features the integration nanoplasmonics and functional microfluidics precise chronological metabolites. An ultrathin fluorocarbon film facilitates large-area nanofabrication plasmonic structures on microfluidic channel via low-temperature solid-state dewetting thin silver film. conformal contact human skin SERS detection diverse metabolites from sequentially sampled sweat. Machine-learned quantification including lactate, uric acid, tyrosine has successfully profiled during assorted physical activities. This can provide new strategy delineating phenotype individuals personalized

Language: Английский

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Wearable SERS devices in health management: Challenges and prospects

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Journal Year: 2025, Volume and Issue: 334, P. 125957 - 125957

Published: Feb. 26, 2025

Language: Английский

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Exploring Plasmonic Standalone Surface-Enhanced Raman Scattering Nanoprobes for Multifaceted Applications in Biomedical, Food, and Environmental Fields

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(22), P. 1839 - 1839

Published: Nov. 17, 2024

Surface-enhanced Raman scattering (SERS) is an innovative spectroscopic technique that amplifies the signals of molecules adsorbed on rough metal surfaces, making it pivotal for single-molecule detection in complex biological and environmental matrices. This review aims to elucidate design strategies recent advancements application standalone SERS nanoprobes, with a special focus quantifiable tags. We conducted comprehensive analysis literature, focusing development nanoprobes employ novel nanostructuring techniques enhance signal reliability quantification. Standalone exhibit significant enhancements sensitivity specificity due optimized hot spot generation improved reporter molecule interactions. Recent innovations include nanogap core-satellite structures electromagnetic fields, which are crucial applications. particularly those utilizing indirect mechanisms, represent advancement field. They hold potential wide-ranging applications, from disease diagnostics monitoring, owing their enhanced ability operate under sample conditions.

Language: Английский

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Hotspots Heading for Goals: High-Specificity SERS Sensing with Hierarchically Structured Micromotors

Optics Letters, Journal Year: 2024, Volume and Issue: 49(24), P. 7106 - 7106

Published: Nov. 11, 2024

This work reports a hierarchically structured micromotor (HSM) surface-enhanced Raman scattering (SERS) platform comprising 3D tubular configurations with nanostructured outer walls. The HSMs can be powered by an external magnetic field in solution to enrich molecules promoted adsorption efficiency. wall serves as containers collect and produce strong localized surface plasmon resonance intensify of the enriched molecules. Further coupling after molecular enrichment additional plasmonic hotspots at sites where were enriched, providing manipulate enter hotspot region. Moreover, functionalizing specific on enables high-specificity SERS sensing for benzaldehyde (BA) Cu

Language: Английский

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