Raman scattering of 4-aminobenzenethiol sandwiched between Ag nanoparticle and macroscopically smooth Au substrate: Effects of size of Ag nanoparticles and the excitation wavelength

2011 ◽  
Vol 135 (12) ◽  
pp. 124705 ◽  
Author(s):  
Kwan Kim ◽  
Jeong-Yong Choi ◽  
Hyang Bong Lee ◽  
Kuan Soo Shin
Keyword(s):  
Raman Scattering ◽  
Ag Nanoparticles ◽  
Excitation Wavelength ◽  
Ag Nanoparticle ◽  
Substrate Effects

Hydrogenated black TiO2 nanowires decorated with Ag nanoparticles as sensitive and reusable surface-enhanced Raman scattering substrates

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34737-34743 ◽  
Author(s):  
Yufeng Shan ◽  
Yong Yang ◽  
Yanqin Cao ◽  
Hao Yin ◽  
Nguyen Viet Long ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Ag Nanoparticles ◽  
Surface Enhanced Raman Scattering ◽  
Ag Nanoparticle ◽  
Tio2 Nanowires ◽  
High Reproducibility ◽  
Surface Enhanced ◽  
Black Tio2 ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Ag nanoparticle decorated hydrogenated TiO2 nanowires are fabricated as surface-enhanced Raman scattering substrates that are self-cleaning and reusable, and show high reproducibility, sensitivity, and stability.

High performance SERS active substrates fabricated by directly growing graphene on Ag nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (110) ◽  
pp. 90457-90465 ◽  
Author(s):  
Shicai Xu ◽  
Jihua Wang ◽  
Yan Zou ◽  
Hanping Liu ◽  
Guiying Wang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Ag Nanoparticles ◽  
High Performance ◽  
Pyrolytic Graphite ◽  
High Vacuum ◽  
Sers Substrate ◽  
Ag Nanoparticle ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

An efficient surface enhanced Raman scattering (SERS) substrate of graphene-isolated Ag nanoparticle (G/AgNP) has been developed by using excimer laser to ablate the ordered pyrolytic graphite in high vacuum onto Ag nanoparticles.

Raman scattering enhancement of a single ZnO nanorod decorated with Ag nanoparticles: synergies of defects and plasmons

2018 ◽  
Vol 43 (10) ◽  
pp. 2244 ◽  
Author(s):  
Ruibin Lin ◽  
Liang Hu ◽  
Jinzhang Wang ◽  
Wenjing Zhang ◽  
Shuangchen Ruan ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Ag Nanoparticles ◽  
Zno Nanorod

scholarly journals Terahertz emission from GaAs-AlGaAs core-shell nanowires on Si (100) substrate: Effects of applied magnetic field and excitation wavelength

2013 ◽  
Vol 102 (6) ◽  
pp. 063101 ◽  
Author(s):  
Jasher John Ibanes ◽  
Ma. Herminia Balgos ◽  
Rafael Jaculbia ◽  
Arnel Salvador ◽  
Armando Somintac ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Excitation Wavelength ◽  
Core Shell ◽  
Terahertz Emission ◽  
Substrate Effects ◽  
Shell Nanowires

Experimental and theoretical study of the characteristics of LSPR peaks for metal NPs produced by controlling Ar ambient gas pressure to enhance the efficiency of solar cells

2021 ◽  
pp. 1-6
Author(s):  
Serap Yiğit Gezgin ◽  
Abdullah Kepceoğlu ◽  
Hamdi Şükür Kiliç
Keyword(s):  
Metal Nanoparticles ◽  
Ag Nanoparticles ◽  
Solar Spectrum ◽  
Wavelength Region ◽  
Gas Pressure ◽  
Metal Nanoparticle ◽  
Ag Nanoparticle ◽  
Extinction Cross Section ◽  
Ambient Gas ◽  
Ar Gas

In this study, silver (Ag) nanoparticle thin films were deposited on microscope slide glass and Si wafer substrates using the pulsed-laser deposition (PLD) technique in Ar ambient gas pressures of 1 × 10−3 and 7.5 × 10−1 mbar. AFM analysis has shown that the number of Ag nanoparticles reaching the substrate decreased with increasing Ar gas pressure. As a result of Ar ambient gas being allowed into the vacuum chamber, it was observed that the size and height of Ag nanoparticles decreased and the interparticle distances decreased. According to the absorption spectra taken by a UV–vis spectrometer, the wavelength where the localised surface plasmon resonance (LSPR) peak appeared was shifted towards the longer wavelength region in the solar spectrum as Ar background gas pressure was decreased. This experiment shows that LSPR wavelength can be tuned by adjusting the size of metal nanoparticles, which can be controlled by changing Ar gas pressure. The obtained extinction cross section spectra for Ag nanoparticle thin film was theoretically analysed and determined by using the metal nanoparticle–boundary element method (MNPBEM) toolbox simulation program. In this study, experimental spectrum and simulation data for metal nanoparticles were acquired, compared, and determined to be in agreement.

scholarly journals Development of Effectual Substrates for SERS by Nanostructures-on flexible surfaces

2021 ◽  
Vol 2114 (1) ◽  
pp. 012084
Author(s):  
Hammad R. Humud ◽  
Fatimah Jumaah Moaen
Keyword(s):  
Raman Scattering ◽  
Ag Nanoparticles ◽  
Surface Enhanced Raman Scattering ◽  
Wave Number ◽  
Plasmonic Nanostructures ◽  
Sers Substrate ◽  
Two Dimensional ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Abstract The current study examines recent advancements in surface-enhanced Raman scattering (SERS), a technique that employs flexible surfaces as an active substrate, this surfaces consist from two-dimensional thermo-plasmonic grating. With 53 nm Au layer (was deposited on the 2D grating structure of the PDMS by the PVD method). The explosive wire technique was used to preparing Ag nanoparticles that were used for the purpose of SERS. The effect of the plasmonic nanostructures on the absorption spectra and Surface - Enhanced Raman Scattering (SERS) activities was examined. Rhodamine 6G dye was used as a probe molecule. X-Ray diffraction (XRD) was used to examine the structural characteristics of the nanoparticles. The morphology was assessed using Field Emission Scanning Electron Microscopy(FESEM). A twin beam UV-Vis Spectrophotometer was used to measure the absorption of the combined Rh6G dye (concentration 1×10“–6M) with the nanostructures. a Sunshine Raman microscope system and a 50mm objective lens, used for investigating the Raman spectra of the Rh6G combined with nanostructures. The results showed that the enhancement factor (EF) for SERS of R6G (1×M) reached to (2.2×10 3) When using Ag nanoparticles and (0.08 × 103) when R6G deposited directly on the flexible substrates without nanostructures at the wave number (1650 cm−1), we produced a recyclable, homogeneous, and highly sensitive SERS substrate with dependable reproducibility. For the SERS substrate, a surface made up of two-dimensional (2D) flexible grating substrates was chosen to provide multiple modalities in electrical and medicinal applications.

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