Arrays of carbon nanoflake spherules realised on copper substrate

S Kumar; P Yadev; JWJ Hamilton; JAD McLaughlin

doi:10.1016/j.diamond.2009.01.045

Arrays of carbon nanoflake spherules realised on copper substrate

S Kumar, P Yadev, JWJ Hamilton, JAD McLaughlin

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Arrays of carbon nanoflake spherules (CNSs) have been grown on the copper substrate by the microwave plasma assisted chemical vapour deposition method. Uniform sized CNSs of diameters of 700–950 nm have been produced. The CNSs are free from any other carbon nano-structures. The growth of CNSs has been found to be strongly affected by the undulating surface (crest–trough morphology) of the substrate with preferential growth along the direction of crests. Micro-Raman spectroscopic analysis reveals highly active surface of the graphitic edges of as-grown CNSs. A possible growth mechanism has been proposed which could be used for a large yield of arrays of the CNSs. The field-emission measurements show potential applications of the CNSs in the vacuum electronics devices with a low turn-on field of 7.4 V/μm.

Original language	English
Pages (from-to)	1070-1073
Journal	Diamond and Related Materials
Volume	18
Issue number	9
Early online date	5 Feb 2009
DOIs	https://doi.org/10.1016/j.diamond.2009.01.045
Publication status	Published (in print/issue) - 1 Sept 2009

Keywords

carbon spheres
MPCVD
raman
graphitic edges

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10.1016/j.diamond.2009.01.045

http://uir.ulster.ac.uk/210/1/arrays_of_carbon_nanoflake_spherules.pdf

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title = "Arrays of carbon nanoflake spherules realised on copper substrate",

abstract = "Arrays of carbon nanoflake spherules (CNSs) have been grown on the copper substrate by the microwave plasma assisted chemical vapour deposition method. Uniform sized CNSs of diameters of 700–950 nm have been produced. The CNSs are free from any other carbon nano-structures. The growth of CNSs has been found to be strongly affected by the undulating surface (crest–trough morphology) of the substrate with preferential growth along the direction of crests. Micro-Raman spectroscopic analysis reveals highly active surface of the graphitic edges of as-grown CNSs. A possible growth mechanism has been proposed which could be used for a large yield of arrays of the CNSs. The field-emission measurements show potential applications of the CNSs in the vacuum electronics devices with a low turn-on field of 7.4 V/μm.",

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author = "S Kumar and P Yadev and JWJ Hamilton and JAD McLaughlin",

year = "2009",

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doi = "10.1016/j.diamond.2009.01.045",

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TY - JOUR

T1 - Arrays of carbon nanoflake spherules realised on copper substrate

AU - Kumar, S

AU - Yadev, P

AU - Hamilton, JWJ

AU - McLaughlin, JAD

PY - 2009/9/1

Y1 - 2009/9/1

N2 - Arrays of carbon nanoflake spherules (CNSs) have been grown on the copper substrate by the microwave plasma assisted chemical vapour deposition method. Uniform sized CNSs of diameters of 700–950 nm have been produced. The CNSs are free from any other carbon nano-structures. The growth of CNSs has been found to be strongly affected by the undulating surface (crest–trough morphology) of the substrate with preferential growth along the direction of crests. Micro-Raman spectroscopic analysis reveals highly active surface of the graphitic edges of as-grown CNSs. A possible growth mechanism has been proposed which could be used for a large yield of arrays of the CNSs. The field-emission measurements show potential applications of the CNSs in the vacuum electronics devices with a low turn-on field of 7.4 V/μm.

AB - Arrays of carbon nanoflake spherules (CNSs) have been grown on the copper substrate by the microwave plasma assisted chemical vapour deposition method. Uniform sized CNSs of diameters of 700–950 nm have been produced. The CNSs are free from any other carbon nano-structures. The growth of CNSs has been found to be strongly affected by the undulating surface (crest–trough morphology) of the substrate with preferential growth along the direction of crests. Micro-Raman spectroscopic analysis reveals highly active surface of the graphitic edges of as-grown CNSs. A possible growth mechanism has been proposed which could be used for a large yield of arrays of the CNSs. The field-emission measurements show potential applications of the CNSs in the vacuum electronics devices with a low turn-on field of 7.4 V/μm.

KW - carbon spheres

KW - MPCVD

KW - raman

KW - graphitic edges

U2 - 10.1016/j.diamond.2009.01.045

DO - 10.1016/j.diamond.2009.01.045

M3 - Article

SN - 0925-9635

VL - 18

SP - 1070

EP - 1073

JO - Diamond and Related Materials

JF - Diamond and Related Materials

IS - 9

ER -

Arrays of carbon nanoflake spherules realised on copper substrate

Abstract

Keywords

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