Raman excitation profiles of hybrid systems constituted by single-layer graphene and free base phthalocyanine: Manifestations of two mechanisms of graphene-enhanced Raman scattering

2017 ◽  
Vol 48 (10) ◽  
pp. 1270-1281 ◽  
Author(s):  
Tereza Uhlířová ◽  
Peter Mojzeš ◽  
Zuzana Melniková ◽  
Martin Kalbáč ◽  
Veronika Sutrová ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Hybrid Systems ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Free Base ◽  
Layer Graphene ◽  
Enhanced Raman Scattering ◽  
Raman Excitation Profiles

Raman scattering and tunable electron–phonon coupling in single layer graphene

2007 ◽  
Vol 143 (1-2) ◽  
pp. 39-43 ◽  
Author(s):  
Jun Yan ◽  
Yuanbo Zhang ◽  
Sarah Goler ◽  
Philip Kim ◽  
Aron Pinczuk
Keyword(s):  
Raman Scattering ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Phonon Coupling ◽  
Layer Graphene ◽  
Electron Phonon Coupling

Effect of Ethanethiolate Spacer on Morphology and Optical Responses of Ag Nanoparticle Array–Single Layer Graphene Hybrid Systems

Langmuir ◽  
2017 ◽  
Vol 33 (50) ◽  
pp. 14414-14424 ◽  
Author(s):  
Veronika Sutrová ◽  
Ivana Šloufová ◽  
Zuzana Melníková ◽  
Martin Kalbáč ◽  
Ewa Pavlova ◽  
...  
Keyword(s):  
Hybrid Systems ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Nanoparticle Array ◽  
Ag Nanoparticle ◽  
Layer Graphene ◽  
Optical Responses

scholarly journals Supported Ultra-Thin Alumina Membranes with Graphene as Efficient Interference Enhanced Raman Scattering Platforms for Sensing

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 830
Author(s):  
Montserrat Aguilar-Pujol ◽  
Rafael Ramírez-Jiménez ◽  
Elisabet Xifre-Perez ◽  
Sandra Cortijo-Campos ◽  
Javier Bartolomé ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Low Cost ◽  
Single Layer ◽  
Chemical Vapor ◽  
Single Layer Graphene ◽  
Raman Signal ◽  
Alumina Membrane ◽  
Alumina Membranes ◽  
Raman Enhancement ◽  
Enhanced Raman Scattering

The detection of Raman signals from diluted molecules or biomaterials in complex media is still a challenge. Besides the widely studied Raman enhancement by nanoparticle plasmons, interference mechanisms provide an interesting option. A novel approach for amplification platforms based on supported thin alumina membranes was designed and fabricated to optimize the interference processes. The dielectric layer is the extremely thin alumina membrane itself and, its metallic aluminum support, the reflecting medium. A CVD (chemical vapor deposition) single-layer graphene is transferred on the membrane to serve as substrate to deposit the analyte. Experimental results and simulations of the interference processes were employed to determine the relevant parameters of the structure to optimize the Raman enhancement factor (E.F.). Highly homogeneous E.F. over the platform surface are obtained, typically 370 ± (5%), for membranes with ~100 nm pore depth, ~18 nm pore diameter and the complete elimination of the Al2O3 bottom barrier layer. The combined surface enhanced Raman scattering (SERS) and interference amplification is also demonstrated by depositing ultra-small silver nanoparticles. This new approach to amplify the Raman signal of analytes is easily obtained, low-cost and robust with useful enhancement factors (~400) and allows only interference or combined enhancement mechanisms, depending on the analyte requirements.

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