Non-enzymatic glucose sensing by enhanced Raman spectroscopy on flexible ‘as-grown’ CVD graphene

The Analyst ◽  
2015 ◽  
Vol 140 (12) ◽  
pp. 3935-3941 ◽  
Author(s):  
Surojit Chattopadhyay ◽  
Mau-Shiun Li ◽  
Pradip Kumar Roy ◽  
C. T. Wu
Keyword(s):  
Raman Spectroscopy ◽  
Charge Transfer ◽  
Glucose Sensing ◽  
Cvd Graphene ◽  
Layer Graphene ◽  
A Charge ◽  
Few Layer Graphene

Unmodified, as-grown few layer graphene (on copper) have been used for glucose sensing using Raman spectroscopy. The origin of the graphene enhanced Raman spectroscopy (GERS) signal of glucose is attributed to a charge transfer from glucose to graphene.

Graphene Layers on Silicon Carbide Studied by Raman Spectroscopy

2008 ◽  
Vol 600-603 ◽  
pp. 567-570 ◽  
Author(s):  
Jonas Röhrl ◽  
Martin Hundhausen ◽  
Konstantin V. Emtsev ◽  
Thomas Seyller ◽  
Lothar Ley
Keyword(s):  
Silicon Carbide ◽  
Raman Spectroscopy ◽  
Light Scattering ◽  
Graphene Layer ◽  
Monolayer Graphene ◽  
Spectroscopy Study ◽  
Graphene Layers ◽  
Layer Graphene ◽  
Micro Raman Spectroscopy ◽  
Few Layer Graphene

We present a micro-Raman spectroscopy study on single- and few layer graphene (FLG) grown on the silicon terminated surface of 6H-silicon carbide (SiC). On the basis of the 2D-line (light scattering from two phonons close to the K-point in the Brillouin zone) we distinguish graphene mono- from bilayers or few layer graphene. Monolayers have a 2D-line consisting of only one component, whereas more than one component is observed for thicker graphene layers. Compared to the graphite the monolayer graphene lines are shifted to higher frequencies. We tentatively ascribe the corresponding phonon hardening to strain in the first graphene layer.

Raman Spectroscopy as a Tool to Address Individual Graphene Layers in Few-Layer Graphene

2012 ◽  
Vol 116 (35) ◽  
pp. 19046-19050 ◽  
Author(s):  
Martin Kalbac ◽  
Jing Kong ◽  
Mildred S. Dresselhaus
Keyword(s):  
Raman Spectroscopy ◽  
Graphene Layers ◽  
Layer Graphene ◽  
Few Layer Graphene

Solid Phase Growth of Graphene on Silicon Carbide by Nickel Silicidation: Graphene Formation Mechanisms

2014 ◽  
Vol 778-780 ◽  
pp. 1162-1165
Author(s):  
Enrique Escobedo-Cousin ◽  
Konstantin Vassilevski ◽  
Toby Hopf ◽  
Nicholas Wright ◽  
Anthony G. O'Neill ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Solid Phase ◽  
Formation Mechanisms ◽  
Layer By Layer ◽  
Phase Growth ◽  
Force Microscopy ◽  
Layer Graphene ◽  
Atomic Force ◽  
High Temperature Stage ◽  
Few Layer Graphene

This work presents experimental evidence of the formation mechanisms of few-layer graphene (FLG) films on SiC by nickel silicidation. FLG is formed by annealing of a 40 nm thick Ni layer on 6H-SiC at 1035ºC for 60 s, resulting in a Ni2Si layer which may be capped by any Ni that did not react during annealing. It has been proposed that FLG forms on top of the Ni during the high temperature stage. In contrast, during cooling, carbon atoms which were released during the silicidation reaction may diffuse back towards the Ni2Si/SiC interface to form a second FLG film. After annealing, layer-by-layer de-processing was carried out in order to unequivocally identify the FLG at each location using Atomic force microscopy (AFM) and Raman spectroscopy.

Gamma ray-assisted irradiation of few-layer graphene films: a Raman spectroscopy study

2014 ◽  
Vol T162 ◽  
pp. 014025 ◽  
Author(s):  
D N Kleut ◽  
Z M Marković ◽  
I D Holclajtner Antunović ◽  
M D Dramićanin ◽  
D P Kepić ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Gamma Ray ◽  
Spectroscopy Study ◽  
Layer Graphene ◽  
Graphene Films ◽  
Few Layer Graphene

Raman spectroscopy on single- and few-layer graphene

2007 ◽  
Author(s):  
Davy Graf ◽  
Françoise Molitor ◽  
Klaus Ensslin ◽  
Christoph Stampfer ◽  
Alain Jungen ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Layer Graphene ◽  
Few Layer Graphene

Insights into the effects of metal nanostructuring and oxidation on the work function and charge transfer of metal/graphene hybrids

Nanoscale ◽  
2015 ◽  
Vol 7 (30) ◽  
pp. 12868-12877 ◽  
Author(s):  
M. M. Giangregorio ◽  
W. Jiao ◽  
G. V. Bianco ◽  
P. Capezzuto ◽  
A. S. Brown ◽  
...  
Keyword(s):  
Thin Films ◽  
Raman Spectroscopy ◽  
Charge Transfer ◽  
Work Function ◽  
Spectroscopic Ellipsometry ◽  
Cvd Graphene ◽  
Non Invasive

Charge transfer between CVD graphene and thin films and nanoparticles of various sizes of Al, Ga, Au, Cu and Ag was probed by various corroborating non-invasive approaches of KPFM, Raman spectroscopy and plasmonic spectroscopic ellipsometry.

scholarly journals From Graphite to Laccase Biofunctionalized Few-Layer Graphene: A “One Pot” Approach Using a Chimeric Enzyme

2020 ◽  
Vol 21 (11) ◽  
pp. 3741
Author(s):  
Ilaria Sorrentino ◽  
Ilaria Stanzione ◽  
Yannig Nedellec ◽  
Alessandra Piscitelli ◽  
Paola Giardina ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
One Pot ◽  
Chimeric Enzyme ◽  
Chimeric Enzymes ◽  
Layer Graphene ◽  
Electrochemical Applications ◽  
Genetic Fusion ◽  
Few Layer Graphene ◽  
The Way

A chimeric enzyme based on the genetic fusion of a laccase with a hydrophobin domain was employed to functionalize few-layer graphene, previously exfoliated from graphite in the presence of the hydrophobin. The as-produced, biofunctionalized few-layer graphene was characterized by electrochemistry and Raman spectroscopy, and finally employed in the biosensing of phenols such as catechol and dopamine. This strategy paves the way for the functionalization of nanomaterials by hydrophobin domains of chimeric enzymes and their use in a variety of electrochemical applications.

Probing Layer Number and Stacking Order of Few-Layer Graphene by Raman Spectroscopy

Small ◽  
2010 ◽  
Vol 6 (2) ◽  
pp. 195-200 ◽  
Author(s):  
Yufeng Hao ◽  
Yingying Wang ◽  
Lei Wang ◽  
Zhenhua Ni ◽  
Ziqian Wang ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Layer Number ◽  
Layer Graphene ◽  
Stacking Order ◽  
Few Layer Graphene
Sign in / Sign up

Export Citation Format

Share Document