2011
DOI: 10.1021/jz200087w
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Abstract: Graphene has attracted growing interest in the past few years. Growing vertically oriented graphene sheets with a designed pattern is practically attractive for device applications based on graphene. Here we report a patterned synthesis of vertical graphene nanosheets using plasma-enhanced chemical vapor deposition. Both experimental and modeling results suggest that the electric field distribution above the substrate material plays a key role in the graphene coverage. Vertical graphene patterns can thus be de… Show more

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Cited by 160 publications
(117 citation statements)
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“…The unique vertical orientation and open structure make VG an ideal sensing material as its entire surface is accessible by analyte molecules. Recently, our group has developed a dc plasma-enhanced chemical vapor deposition (dc-PECVD) approach for atmospheric pressure growth of vertical graphene on various conductive substrates303132. This approach can serve as a simple and one-step method to prepare graphene-based field-effect transistor (FET) devices and can be a better alternative route to drop-casting methods that are commonly used to fabricate graphene and carbon nanotube (CNT) FET devices.…”
mentioning
confidence: 99%
“…The unique vertical orientation and open structure make VG an ideal sensing material as its entire surface is accessible by analyte molecules. Recently, our group has developed a dc plasma-enhanced chemical vapor deposition (dc-PECVD) approach for atmospheric pressure growth of vertical graphene on various conductive substrates303132. This approach can serve as a simple and one-step method to prepare graphene-based field-effect transistor (FET) devices and can be a better alternative route to drop-casting methods that are commonly used to fabricate graphene and carbon nanotube (CNT) FET devices.…”
mentioning
confidence: 99%
“…Similar to VG-based biosensors, the vertical and open structures of VGs offer large accessible surface areas for gas molecule adsorption and inhibit the agglomeration of graphene sheets during the sensor device fabrication. The electric field distribution above the substrate guides the VG growth by PECVD and can be used for area-specific synthesis of VG-based FET gas sensors [17]. Due to the enhanced electric field, VG sheets could be selectively grown on a gold sensor electrode with different patterns.…”
Section: Vg-based Gas Sensorsmentioning
confidence: 99%
“…The sensor conductivity gradually decreases when the gate voltage changes from −40 to +40 V, showing that the VGs in the sensor behave like a p-type semiconductor. Reprinted with permission from [17]. Copyright 2011 American Chemical Society.…”
Section: Vg-based Gas Sensorsmentioning
confidence: 99%
“…[1][2][3][4][5] The combination of its excellent properties and inexpensive source has spurred intensive interest in producing a cost-effective platform for arrays of potential applications in nanodevices, Li ion batteries, position-sensitive IR detector, photovoltaic, energy storage, solar cell, chemical/biological sensors, display devices, optoelectronics, and catalysts. [6][7][8][9][10][11][12][13][14][15] It is well known that among strategies for generating the graphenebased materials, graphite oxide (GO) is often used as a starting materials because the presence of covalently attached oxygen containing groups on the basal plane and at the edge of GO surface provides a handle for the chemical modification of graphene using the well-developed carbon surface chemistry. Furthermore, GO can be readily exfoliated in water to obtain stable dispersions of single layer sheet that is known as graphene oxide nanosheets (GOS), offering a great flexibility for further modifications and applications.…”
Section: Introductionmentioning
confidence: 99%