Microstructuring of Graphene Oxide Nanosheets Using Direct Laser Writing

Zhou, Yong; Bao, Qiaoliang; Varghese, Binni; Tang, Lena Ai Ling; Tan, Chow Khim; Sow, Chorng Haur; Loh, Kian Ping

doi:10.1002/adma.200901942

Cited by 269 publications

(237 citation statements)

References 39 publications

(18 reference statements)

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“…However, under the same processing conditions, the laser ablated line width on the graphene in air was found slightly larger than that in Argon, which can be attributed to oxidative burning of graphene to volatile CO and/or CO 2 [17,18]. Figure 3 compares the ablation line widths in air and in Ar gas.…”

Section: Resultsmentioning

confidence: 99%

Ti:sapphire femtosecond laser direct micro-cutting and profiling of graphene

Zhang

Wang

et al. 2012

Appl. Phys. A

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This paper reports the formation of uniform single layer micro-patterns of graphene on a glass substrate using direct femtosecond laser cutting. The cutting of graphene was achieved in air and argon. By translating the graphene sample with respect to the laser beam, continuous micro-channels were carved. The cutting geometry can be controlled by varying the laser fluence and the scanning path. Also, 1∼2 μm wide graphene micro-ribbons were hatched out. The ablation threshold of graphene was determined to be 0.16∼0.21 J/cm 2 . With the laser fluence higher than the ablation threshold, graphene was ablated rapidly and removed completely without damaging the glass substrate. Atomic force microscopy (AFM) and Raman spectroscopy have been used to confirm the ablation of graphene. Time domain finite difference modelling was employed to understand the thermal history of the laser ablation process.

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Section: Resultsmentioning

confidence: 99%

Ti:sapphire femtosecond laser direct micro-cutting and profiling of graphene

Zhang

Wang

et al. 2012

Appl. Phys. A

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“…As well as, the Average Roughness (R A ), shown in the figure, decreases with the increasing laser energy density. This roughness decline, caused by laser irradiation was referred previously using of 663 nm/80 mW power laser and can be connected to etching of graphene oxide porous surface by laser in the ambient atmosphere [4]. To gain insight into the electric properties changes after the laser irradiation, the current-voltage (I-V) characteristic was measured using standard two points method.…”

Section: Resultsmentioning

confidence: 91%

“…The GO is described as a random distribution of oxidized areas with oxygen-containing functional groups, combined with non-oxidized regions where most of the carbon atoms preserve sp 2 hybridization typical of pure graphene sheets [2]. The basal planes of GO are decorated with epoxy and hydroxyl groups, while the GO edges are bonded with carboxylic and carbonyl groups [3,4]. The main graphene and GO difference is that the GO is electrical insulator or low conductive because the most of carbon atoms are sp 3 hybridized and graphene is an excellent conductor because carbon is sp 2 hybridized [5] GO reduction and deoxygenation provides an alternative path to graphene-like sheets (G) [6,7].…”

Section: Introductionmentioning

confidence: 99%

Laser modification of graphene oxide layers

Malínský

Macková

Cutroneo³

et al. 2018

EPJ Web of Conferences

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Abstract. The effect of linearly polarized laser irradiation with various energy densities was successfully used for reduction of graphene oxide (GO). The ion beam analytical methods (RBS, ERDA) were used to follow the elemental composition which is expected as the consequence of GO reduction. The chemical composition analysis was accompanied by structural study showing changed functionalities in the irradiated GO foils using spectroscopy techniques including XPS, FTIR and Raman spectroscopy. The AFM was employed to identify the surface morphology and electric properties evolution were subsequently studied using standard two point method measurement. The used analytical methods report on reduction of irradiated graphene oxide on the surface and the decrease of surface resistivity as a growing function of the laser beam energy density.

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“…[75][76][77][78][79]. In addition, Zhou et al have reported a method to selectively reduce GO by laser writing [80].…”

Section: Radiation Based Methodsmentioning

confidence: 99%

Graphene synthesis: a Review

Shams

Zhang

Zhu

2015

Materials Science-Poland

123

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Graphene has achieved a great amount of popularity and interest from the science world because of its extraordinary physical, mechanical and thermal properties. Graphene is an allotrope of carbon, having one-atom-thick planar sheets of sp 2 bonded carbon atoms densely packed in a honeycomb crystal lattice. Many methods to synthesize graphene have been developed over a short period and we believe it is necessary to create a list of the most notable approaches. This article focuses on the methods to synthesize graphene in an attempt to summarize and document advancements in the synthesis of graphene research and future prospects.

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Microstructuring of Graphene Oxide Nanosheets Using Direct Laser Writing

Cited by 269 publications

References 39 publications

Ti:sapphire femtosecond laser direct micro-cutting and profiling of graphene

Ti:sapphire femtosecond laser direct micro-cutting and profiling of graphene

Laser modification of graphene oxide layers

Graphene synthesis: a Review

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