Developments in Localized Surface Plasmon Resonance

Plasmonics, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 4, 2024

Abstract Localized surface plasmon resonance (LSPR) is a nanoscale phenomenon associated with noble metal nanostructures that has long been studied and gained considerable interest in recent years. These resonances produce sharp spectral absorption scattering peaks, along strong electromagnetic near-field enhancements. Over the past decade, advancements fabrication of have propelled significant developments various scientific technological aspects LSPR. One notable application detection molecular interactions near nanoparticle surface, observable through shifts LSPR peak. This document provides an overview this sensing strategy. Given broad expanding scope topic, it impossible to cover every aspect comprehensively review. However, we aim outline major research efforts within field review diverse array relevant literature. We will provide detailed summary physical principles underlying address some existing inconsistencies nomenclature used. Our discussion primarily focus on sensors employ nanoparticles, rather than those utilizing extended, fabricated structures. concentrate where acts as primary mode signal transduction, excluding hybrid strategies like combining fluorescence. Additionally, our examination biological largely pertain label-free methods, use nanoparticles labels or means enhance efficacy label. In subsequent section review, delve into analytical theory underpinning LSPR, exploring its origins dependency material properties metals surrounding refractive index. discuss behavior both spherical spheroidal particles elaborate how response varies particle ratio. Further, detail fundamentals nanoparticle-based sensing. includes exploration single-particle ensemble measurements comparative analysis scattering, absorption, extinction phenomena. The extend these are applied practical scenarios, highlighting key experimental approaches measurement techniques.

Language: Английский

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Rapid and On-Site Approaches for Determination of Polycyclic Aromatic Hydrocarbons in Water and Air by Surface-Enhanced Raman Spectroscopy

ACS Omega, Journal Year: 2025, Volume and Issue: 10(6), P. 6258 - 6266

Published: Feb. 6, 2025

Polycyclic aromatic hydrocarbons (PAHs) represent a class of carcinogenic, teratogenic, and mutagenic organic pollutants that are ubiquitous in the environment. The rapid on-site detection PAHs remains challenge. This study proposes point-of-use (POU) surface-enhanced Raman spectroscopy (SERS)-based strategies for qualitative quantitative analyses environmental water air. results demonstrate clear correlations between signal intensity logarithmic concentration (ranging from 2.5 to 100 ppb), with satisfactory recovery reproducibility. A similar trend was observed on glass fiber filters modified silver nanoparticles (AgNPs@GF filter). Specifically, limits (LOD) fluoranthene, phenanthrene, pyrene were 0.7, 1.0, 0.1 ppb, respectively, while LOD AgNPs@GF filter 9.11, 18.18, 14.59 ppb. Recovery rates spiked real ranged 83% 126%, entire process completed within 1 min. These findings highlight significant potential this method as powerful tool analysis various matrices.

Language: Английский

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Tunable and scalable production of nanostar particle platforms for diverse applications using an AI-integrated automated synthesis system

Journal of Materials Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

Language: Английский

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The importance of interface interactions in flexible sensing materials: Classification, effect, and application

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162276 - 162276

Published: April 1, 2025

Language: Английский

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