Raman Spectral Band Oscillations in Large Graphene Bubbles

Physical Review Letters
Yuan HuangRodney S Ruoff

Abstract

Raman spectra of large graphene bubbles showed size-dependent oscillations in spectral intensity and frequency, which originate from optical standing waves formed in the vicinity of the graphene surface. At a high laser power, local heating can lead to oscillations in the Raman frequency and also create a temperature gradient in the bubble. Based on Raman data, the temperature distribution within the graphene bubble was calculated, and it is shown that the heating effect of the laser is reduced when moving from the center of a bubble to its edge. By studying graphene bubbles, both the thermal conductivity and chemical reactivity of graphene were assessed. When exposed to hydrogen plasma, areas with bubbles are found to be more reactive than flat graphene.

References

Oct 23, 2004·Science·K S NovoselovA A Firsov
Dec 13, 2006·Physical Review Letters·A C FerrariA K Geim
Feb 7, 2007·Physical Review Letters·Michele Lazzeri, Francesco Mauri
Feb 13, 2007·Nature Materials·Simone PisanaFrancesco Mauri
May 16, 2007·Physical Review Letters·Jun YanAron Pinczuk
Jul 18, 2008·Nano Letters·J Scott BunchPaul L McEuen
Apr 22, 2009·Proceedings of the National Academy of Sciences of the United States of America·Mingyuan HuangJames Hone
Nov 26, 2009·Nano Letters·Constanze MetzgerBennett B Goldberg
Aug 5, 2010·Nanotechnology·Annalisa ConvertinoFaustino Martelli
Aug 5, 2010·Advanced Materials·Rong YangGuangyu Zhang
Nov 12, 2010·Nature·Zhengzong SunJames M Tour
May 17, 2011·Physical Review Letters·Duhee YoonHyeonsik Cheong
Aug 16, 2011·Nature Nanotechnology·Steven P KoenigJ Scott Bunch
Aug 30, 2012·Nature Communications·Ji Eun LeeSunmin Ryu
Nov 15, 2013·Nano Letters·Narasimha G BoddetiMartin L Dunn
Sep 10, 2014·Nature Nanotechnology·Jinming CaiRoman Fasel
Oct 3, 2014·Nanoscale·Hongyang LiShanshan Chen
Aug 2, 2017·Nano Letters·David LloydJ Scott Bunch

❮ Previous
Next ❯

Citations

Nov 4, 2020·Nature Communications·Xin ZhangStéphane Berciaud
Oct 15, 2021·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Jing ShangLiangzhi Kou
Dec 18, 2021·The Journal of Physical Chemistry Letters·Yanpeng SongXiaolong Chen

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

The Journal of the American Dental Association
Michael R Parini, William G Pitt
The Journal of the Acoustical Society of America
Pavlo Tkalich, Eng Soon Chan
La Revue du praticien
Catherine DroitcourtAlain Dupuy
© 2022 Meta ULC. All rights reserved