Colorimetric sensing for translational applications: from colorants to mechanisms

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(15), P. 7681 - 7741

Published: Jan. 1, 2024

This review summarizes insights into colorant selection and signal mechanisms for the development of colorimetric sensing POC sensors.

Language: Английский

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Optical-Based Aqueous Solution Detection by Graphene Metasurface Surface Plasmon Resonance Biosensor with Behavior Prediction Using Polynomial Regression

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

Published: Aug. 14, 2024

Language: Английский

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Hybrid Plasmonic Biosensors with Deep Learning for Colorectal Cancer Detection

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

Published: Nov. 28, 2024

Language: Английский

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Optical computing at the subwavelength scale: a multifunctional MIM plasmonic logic gate

Applied Optics, Journal Year: 2024, Volume and Issue: 63(24), P. 6364 - 6364

Published: July 30, 2024

Plasmonic logic gates are important components in integrated photonics. They essential for high-speed Boolean computations and data transmission. For this purpose, an all-optical ultra-compact plasmonic gate is proposed paper. The design uses the metal–insulator–metal (MIM) configuration propagation of surface plasmon polaritons. structure comprises three rectangular input slots coupled to output slot through a resonator positioned on gold (Au) with footprint 1000nm×800nm. numerically investigated using finite element method analysis. It has been demonstrated that can operate as OR, XOR, NOT, AND gates, their transmission spectra different states analyzed. This novel solution, best our knowledge, excels high contrast ratio values 45.34 dB (OR), 18.29 (XOR), (NOT), 7.26 (AND). resonant wavelengths 821.21 nm 863.23 814.71 787.69 introduction Au device significantly enhances its properties, offering efficient light confinement, chemical stability, strong response. not only expands repertoire photonics but also promises breakthroughs processing communication technologies, positioning it crucial advancement field nanophotonics.

Language: Английский

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Dependence of Extinction Cross-Section, Absorption and Surface Plasmon Resonance of Nanoparticle Surface Size and Concentration of Silica@Gold Nanoparticles

Deleted Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Gold-coated nanoparticles have garnered significant attention in recent years due to their exceptional thermal stability and distinct optical properties. This paper investigates the characteristics of various nanoparticles, including Silica, Gold, Silica using Mie theory, Gan's effective medium approach. Plasmonic been extensively studied for medical applications across scientific fields. Their surface plasmon resonance remarkable ability absorb scatter light revolutionized diagnosis, treatment, assessment numerous diseases, particularly cancer. One valuable these linked plasmonic properties, is use photothermal therapy cancer treatment. Nanoparticle-based phototherapy has emerged as one most treatment methods years, owing its high efficiency destroying cancerous tumors while minimizing side effects.

Language: Английский

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Multifunctional dynamic chitosan-guar gum nanocomposite hydrogels in infection and diabetic wound healing

Carbohydrate Polymers, Journal Year: 2025, Volume and Issue: unknown, P. 123316 - 123316

Published: Jan. 1, 2025

Language: Английский

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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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Ag nanoparticle-mediated LSPR effect and electron transfer for enhanced oxidative degradation process of g-C3N5 nanoflowers

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 353, P. 128484 - 128484

Published: June 27, 2024

Language: Английский

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Artificial intelligence-based plasma exosome label-free SERS profiling strategy for early lung cancer detection

Analytical and Bioanalytical Chemistry, Journal Year: 2024, Volume and Issue: 416(23), P. 5089 - 5096

Published: July 17, 2024

Language: Английский

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Enhancing photovoltaic efficiency in Half-Tandem MAPbI3/ MASnI3 Perovskite solar cells with triple core-shell plasmonic nanoparticles

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 9, 2025

Significant progress has been made through the optimization of modelling and device architecture solar cells proven to be a valuable highly effective approach for gaining deeper understanding underlying physical processes in cells. Consequently, this research conducted two-dimensional (2D) perovskite (PSCs) simulation develop an accurate model. The utilized study is based on finite element method (FEM). Initially, new configuration was introduced by incorporating CH3NH3SnI3 layer as absorber within PSC structure, forming parallel architecture. As result, power conversion efficiency (PCE) increased up 26.89%. light trapping process plays essential role enhancing performance PSCs. For purpose, we arrays metal nanostructures active (AL) which resulted significantly absorption these layers. In research, influence nanoparticles position AL, radius their composition (gold (Au) silver (Ag)) PSCs are examined determining cross-sectional area scattering Au Ag nanoparticles. optimal plasmonic determined inside MASnI3 complementary 60 nm champion composition. result modifications, PCE reached 29.52%, representing approximate 64% improvement compared planar structure. Subsequently, dielectric-metal-dielectric were into layer, replacing previously embedded metallic nanoparticles, order enhance chemical thermal stability. According optical-electrical results, short-circuit current density (Jsc) proposed PSC, featuring triple core-shell composed TiO2@Ag@TiO2 SiO2@Ag@SiO2, improved approximately 40% 41.5%, respectively, lacking Moreover, under conditions open-circuit voltage (Voc), Jsc, fill factor (FF), simulated at 1.01 V, 35.17 mA/cm², 84.16, 30.18%, respectively. This paves way advancements development cells, offering significant potential practical applications enhanced efficiency.

Language: Английский

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