Realizing Square-Ordered Nanopillars with a 0.1-Tera-Density through a Superimposed Masking Strategy for Advanced Surface-Enhanced Raman Spectroscopy DOI
Seung‐Kyun Lee, Minjae Ku,

Heejin Lim

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Despite widespread interest in nanoscale pillar structures for various optical devices, including solar cells, photonic crystal lasers, and sensors, the critical challenges mass production are high equipment costs limited scalability of traditional manufacturing methods. To overcome these hurdles, this study develops a simple highly scalable etch-mask superposition technique based on thermally assisted nanotransfer printing (T-nTP) Cr line patterns. The orthogonal linear mask patterns creates double-height cross-point arrays that effectively selectively protect underlying SiO

Language: Английский

Multilayer Au@SiO2@Ag@SiO2 composites enhanced surface Raman scattering for non-destructive trace detection DOI

Huiqin Li,

D. Zhong,

Shaotian Yan

et al.

Journal of Photochemistry and Photobiology A Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 116439 - 116439

Published: April 1, 2025

Language: Английский

Citations

0
Tailored nanocones arrays on cellulose fiber: A higher-performance flexible SERS substrate for trace chemical detection DOI

S. Shenbagamoorthi,

R. Premkumar,

Dhanpal Jayram Naidu

et al.

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 51, P. 104662 - 104662

Published: July 5, 2024

Language: Английский

Citations

3
Surface-Enhanced Raman Scattering on Size-Classified Silver Nanoparticles Generated by Laser Ablation DOI Creative Commons

Soma Kenmotsu,

Makoto Hirasawa,

Tomoya Tamadate

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: 9(36), P. 37716 - 37723

Published: Aug. 25, 2024

This study delved into the complex interplay between nanostructural characteristics of nanoparticles and their efficacy in surface-enhanced Raman scattering (SERS) for sensitive detection trace chemical substances. Silver were prepared SERS substrate by combining laser ablation, postannealing processes (up to 500 °C), electrostatic mobility classification, allowing high-purity silver with controlling sizes (40–100 nm) aggregate structures. These then inertially deposited on substrates create SERS-active surfaces, employing Rhodamine B as a probe assess impact particle size, shape, deposition density effectiveness. Our findings revealed that spherical nanoparticles, especially those approximately 50 nm diameter, controlled structure through gas-phase annealing at °C subsequent yielded most significant enhancement. optimal can be explained size response surface plasmon resonance, where enhancement signal particles up (1/10 wavelength used this study, 532 arises from balance dipole moment number "hot spot" regions (respectively proportional cube inverse square diameters theory, leading linear relationship intensity diameter); meanwhile, larger region than nm, was decreased owing attribution phase difference electric field moment. Furthermore, we found 2 μg resulted nearly single layer particles, which is crucial maximizing hotspots and, consequently, effect.

Language: Английский

Citations

3
GaN-Based Substrates as Surface-Enhanced Raman Scattering Sensors for Penicillin G: Does the Size of the Analyte Molecule Matter? DOI Creative Commons
Aleksandra Michałowska, J.L. Weyher, Andrzej Kudelski

et al.

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: 128(21), P. 8759 - 8766

Published: May 17, 2024

Silver was deposited onto surfaces of GaN that were differently nanostructured (by formation individual nanopillars, bunches or hexagonal etch micropits). The different levels surface-enhanced Raman scattering (SERS) activity the nanomaterials obtained compared by using them for SERS detection penicillin G in milk. lowest limit (LOD) achieved silver-covered with nanopillars (LOD = 1.1 × 10–9 M). LODs other higher, equal to 4.1 M 7.3 10–8 micropits, and 1.0 10–7 a flat surface. measurements carried out analytes having significantly sizes molecules showed ratio intensities spectra measured on layer silver clusters highly developed surface smooth depends size analyte molecule metal-analyte affinity. larger molecule, smaller this (for example, it 9.5 pyridine, 3.5 G, 1.5 hemoglobin). These results show some "SERS hot spots" cannot be reached large molecules.

Language: Английский

Citations

2
Fabrication of Ag-perovskite substrates for surface-enhanced Raman scattering via all-vacuum deposition DOI
Chih‐Yi Liu, Jhih-Yan Guo, Jinyi Lin

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(27), P. 10172 - 10180

Published: Jan. 1, 2024

The first all-vacuum deposition for fabricating perovskite-based substrates surface-enhanced Raman scattering (SERS) is reported.

Language: Английский

Citations

2
3D Surface-Enhanced Raman Scattering Substrate Based on an Array of Self-Assembled Au@SiO2 Microspheres DOI Creative Commons
Jiran Liang, Shuai Wang,

Guixiang Yang

et al.

ECS Journal of Solid State Science and Technology, Journal Year: 2024, Volume and Issue: 13(7), P. 077013 - 077013

Published: July 1, 2024

A quasi-periodic array of 3D gold-nanoparticle-capped SiO 2 microspheres (Au@SiO ) was designed and prepared with a facile approach to enhance the Raman signal intensity adsorbed biomolecules. Through adjusting thickness annealing Au thin films initially deposited on arrays self-assembled microspheres, we were able control diameter nanoparticles their interparticle spacing produce two types plasmonic near-field hot spots, locating at gaps such densely arranged individual in gap regions neighboring respectively. Such double enhancement mechanism leads surface-enhanced scattering (SERS) factor up 3 × 10 6 for Rhodamine 6G molecules. The SERS highly uniform relative standard deviation 4.5%. This substrate has significant potential various applications field detection analytes wearable biosensing.

Language: Английский

Citations

2
Direct Writing of SERS Substrates Using Femtosecond Laser Pulses DOI Creative Commons

Cuiying Huang,

Hang Li, Xinping Zhang

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: 9(35), P. 37188 - 37196

Published: Aug. 22, 2024

Achieving a high-density, repeatable, and uniform distribution of "hotspots" across the entire surface-enhanced Raman scattering (SERS) substrate is current challenge in facilitating efficient preparation large-area SERS substrates. In this study, we aim to produce homogeneous substrates based on strong interaction between femtosecond laser pulses thin film colloidal gold nanoparticles (AuNPs). The obtained consists irregularly shaped sharp-edged nanoparticle aggregates with specially extruding features; meanwhile, large number three-dimensional AuNP stacks are produced. advantages such configurations lie production high density hotspots, which can significantly improve performance. When fluence 5.6 mJ/cm

Language: Английский

Citations

2
Rapid identification of pathogenic bacteria using data preprocessing and machine learning-augmented label-free surface-enhanced Raman scattering DOI

Youngho Jeon,

Suji Lee,

Yujin Jeon

et al.

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 425, P. 136963 - 136963

Published: Nov. 23, 2024

Language: Английский

Citations

2
Molecular surface coverage standards by reference-free GIXRF supporting SERS and SEIRA substrate benchmarking DOI Creative Commons
Eleonora Cara, Philipp Hönicke, Yves Kayser

et al.

Nanophotonics, Journal Year: 2024, Volume and Issue: 13(25), P. 4605 - 4614

Published: Aug. 28, 2024

Abstract Non-destructive reference-free grazing incidence X-ray fluorescence (RF-GIXRF) is proposed as a highly effective analytical technique for extracting molecular arrangement density in self-assembled monolayers. The establishment of surface standards through RF-GIXRF impacts various applications, from calibrating laboratory XRF setups to expanding its applicability materials science, particularly coating scenarios with assemblies. Accurate determination coverage crucial proper functionalization and interaction, such assessing the concentration probes on plasmonic nanostructures. However, limited synchrotron radiation access hinders widespread use, prompting need standards, especially benchmarking substrates surface-enhanced Raman infrared absorption spectroscopies (SERS SEIRA) well associated techniques. Using reproducible densities gold ensures solid evaluation number molecules contributing enhanced signals, facilitating comparability across substrates. research discusses importance employing advancing field spectroscopies, encouraging collaborative efforts protocol development science.

Language: Английский

Citations

1
Scalable Decoration of Au Nanoparticles onto Al Nanoconcavities Arrays for Highly Enhanced SERS Detection DOI Creative Commons
Gohar Ijaz Dar, Elisabet Xifré‐Pérez, Lluı́s F. Marsal

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

High sensitivity surface-enhanced Raman spectroscopy (SERS) detection platforms are developed based on Al nanoconcavity array templates with Au nanoparticles assembled via sputtering and thermal treatment.

Language: Английский

Citations

1