Direct Observation of Spatially Heterogeneous Single-Layer Graphene Oxide Reduction Kinetics

Nano Letters ◽  
2013 ◽  
Vol 13 (12) ◽  
pp. 5777-5784 ◽  
Author(s):  
Matthew P. McDonald ◽  
Ahmed Eltom ◽  
Felix Vietmeyer ◽  
Janak Thapa ◽  
Yurii V. Morozov ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Direct Observation ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Reduction Kinetics ◽  
Oxide Reduction ◽  
Layer Graphene

Direct Observation of Single Layer Graphene Oxide Reduction through Spatially Resolved, Single Sheet Absorption/Emission Microscopy

Nano Letters ◽  
2014 ◽  
Vol 14 (6) ◽  
pp. 3172-3179 ◽  
Author(s):  
Denis A. Sokolov ◽  
Yurii V. Morozov ◽  
Matthew P. McDonald ◽  
Felix Vietmeyer ◽  
Jose H. Hodak ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Direct Observation ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Oxide Reduction ◽  
Layer Graphene ◽  
Spatially Resolved ◽  
Single Sheet ◽  
Emission Microscopy

Effects of single layer graphene and graphene oxide modification on the properties of phthalocyanine blue pigments

2020 ◽  
Vol 180 ◽  
pp. 108449 ◽  
Author(s):  
Dongjun Lv ◽  
Hsiu-Sun Sung ◽  
Xiujing Li ◽  
Xia Zhang ◽  
Zheng Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene

Effects of nano carbon black and single-layer graphene oxide on settlement, survival and swimming behaviour ofAmphibalanus amphitritelarvae

2013 ◽  
Vol 29 (7) ◽  
pp. 643-652 ◽  
Author(s):  
Tina Mesarič ◽  
Kristina Sepčič ◽  
Veronica Piazza ◽  
Chiara Gambardella ◽  
Francesca Garaventa ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Carbon Black ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Swimming Behaviour ◽  
Layer Graphene ◽  
Nano Carbon

Single-layer graphene oxide films on a silicon surface

2013 ◽  
Vol 58 (11) ◽  
pp. 1614-1618 ◽  
Author(s):  
A. E. Aleksenskii ◽  
P. N. Brunkov ◽  
A. T. Dideikin ◽  
D. A. Kirilenko ◽  
Yu. V. Kudashova ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Silicon Surface ◽  
Oxide Films ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene

scholarly journals Direct observation of electrically induced Pauli paramagnetism in single-layer graphene using ESR spectroscopy

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Naohiro Fujita ◽  
Daisuke Matsumoto ◽  
Yuki Sakurai ◽  
Kenji Kawahara ◽  
Hiroki Ago ◽  
...  
Keyword(s):  
Direct Observation ◽  
Esr Spectroscopy ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene ◽  
Pauli Paramagnetism

Fanless, Porous graphene-copper composite heat sink for micro devices

2021 ◽  
Author(s):  
Hokyun Rho ◽  
Yea Sol Jang ◽  
Hyojung Bae ◽  
An-Na Cha ◽  
Sang Hyun Lee ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Light Intensity ◽  
Thermal Management ◽  
Heat Sink ◽  
Light Emitting Diode ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Measured Temperature ◽  
Layer Graphene ◽  
Pure Cu

Abstract Thermal management in devices directly affects their performance, but it is difficult to apply conventional cooling methods such as the use of cooling liquids or fans to micro devices owing to the small size of micro devices. In this study, we attempted to solve this problem by employing a heat sink fabricated using copper with porous structures consisting of single-layer graphene on the surface and graphene oxide inside the pores. The porous copper/single-layer graphene/graphene oxide composite (p-CuGrGO) had a porosity of approximately 35%, and the measured pore size was approximately 10 to 100 µm. The internal GO was reduced at a temperature of 1000 ℃. On observing the heat distribution in the structure using a thermal imaging camera, we could observe that the p-CuGrGO was conducting heat faster than the p-Cu, which was consistent with the simulation. Furthermore, the thermal resistance of p-CuGrGO was lower than those of the p-Cu and pure Cu. When the p-CuGrGO was fabricated into a heat sink to mount the light emitting diode (LED) chip, the measured temperature of the LED was 31.04 ℃, which was less than the temperature of the pure Cu of 40.8 ℃. After a week of being subjected to harsh conditions, p-CuGrGO observed 95.24% light intensity, but the light intensity of pure Cu decreased to 66.04%. The results of this study are expected to be applied to micro devices for their effective thermal management.

pH-driven physicochemical conformational changes of single-layer graphene oxide

2011 ◽  
Vol 47 (34) ◽  
pp. 9645 ◽  
Author(s):  
Raymond L. D. Whitby ◽  
Alina Korobeinyk ◽  
Vladimir M. Gun'ko ◽  
Rosa Busquets ◽  
Andrew B. Cundy ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Conformational Changes ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene

Fabrication of nanoelectrode ensembles by electrodepositon of Au nanoparticles on single-layer graphene oxide sheets

Nanoscale ◽  
2012 ◽  
Vol 4 (8) ◽  
pp. 2728 ◽  
Author(s):  
Zhijuan Wang ◽  
Juan Zhang ◽  
Zongyou Yin ◽  
Shixin Wu ◽  
Daniel Mandler ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Au Nanoparticles ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene ◽  
Graphene Oxide Sheets
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