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28 Feb 2011

Volume 98, Issue 9, Articles (09xxxx)

Issue Cover Spotlight Figure

Appl. Phys. Lett. 98, 093502 (2011); http://dx.doi.org/10.1063/1.3531756 (3 pages)

Marina S. Leite, Robyn L. Woo, William D. Hong, Daniel C. Law, and Harry A. Atwater
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Charge fluctuations for particles on a surface exposed to plasma

T. E. Sheridan and A. Hayes

Appl. Phys. Lett. 98, 091501 (2011); http://dx.doi.org/10.1063/1.3560302 (3 pages) | Cited 2 times

Online Publication Date: 28 February 2011

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We develop a stochastic model for the charge fluctuations on a microscopic dust particle resting on a surface exposed to plasma. We find in steady state that the fluctuations are normally distributed with a standard deviation that is proportional to (CTe)1/2, where C is the particle-surface capacitance and Te is the plasma electron temperature. The time for an initially uncharged ensemble of particles to reach the steady state distribution is directly proportional to CTe.
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52.25.Gj Fluctuation and chaos phenomena
52.27.Lw Dusty or complex plasmas; plasma crystals
52.25.Fi Transport properties

Low-temperature synthesis of large-area graphene-based transparent conductive films using surface wave plasma chemical vapor deposition

Jaeho Kim, Masatou Ishihara, Yoshinori Koga, Kazuo Tsugawa, Masataka Hasegawa, and Sumio Iijima

Appl. Phys. Lett. 98, 091502 (2011); http://dx.doi.org/10.1063/1.3561747 (3 pages) | Cited 27 times

Online Publication Date: 2 March 2011

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We present a low-temperature (300–400 °C), large-area (23 cm×20 cm) and efficient synthesis method for graphene-based transparent conductive films using surface wave plasma chemical vapor deposition. The films consist of few-layer graphene sheets. Their transparency and conductivity characteristics make them suitable for practical electrical and optoelectronic applications, which have been demonstrated by the proper operation of a touch panel fabricated using the films. The results confirm that our method could be suitable for the industrial mass production of macroscopic-scale graphene-based films.
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81.05.ue Graphene
85.60.Pg Display systems
78.67.Wj Optical properties of graphene
68.65.Pq Graphene films
68.65.Ac Multilayers
81.15.Gh Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.)

Spectral and temporal behavior of an alkali metal plasma extreme ultraviolet source for surface morphology applications

Takeshi Higashiguchi, Mami Yamaguchi, Takamitsu Otsuka, Hiromitsu Terauchi, Noboru Yugami, Toyohiko Yatagai, Rebekah D’Arcy, Padraig Dunne, and Gerry O’Sullivan

Appl. Phys. Lett. 98, 091503 (2011); http://dx.doi.org/10.1063/1.3560304 (3 pages) | Cited 1 time

Online Publication Date: 2 March 2011

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We have characterized the emission spectrum and temporal history of a pure potassium plasma. Strong broadband emission was observed around 40 nm due to 3s−3p, 3p−3d, and 3d−4f transitions in ions ranging from K2+ to K4+ at a time-averaged electron temperature of about 12 eV. The temporal behavior of this emission strongly follows the recombination phase in the laser-produced plasma and it was reproduced by a hydrodynamic simulation of the potassium plasma which accounted for atomic processes.
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52.25.Os Emission, absorption, and scattering of electromagnetic radiation
52.50.Dg Plasma sources
52.65.-y Plasma simulation
52.38.Kd Laser-plasma acceleration of electrons and ions

The influence of hanging water droplets on discharge activity, application to high voltage insulators

A. Bojovschi, W. S. T. Rowe, and K. L. Wong

Appl. Phys. Lett. 98, 091504 (2011); http://dx.doi.org/10.1063/1.3559850 (3 pages) | Cited 2 times

Online Publication Date: 4 March 2011

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An investigation into the effect of hanging water droplets on a high voltage electrode is presented. This study is extended to a real life application of water droplets hanging on the sheds of high voltage ceramic insulators. The role of the water droplets on the partial discharge and flash over activity is considered. The results show that hanging droplets have a significant influence on corona discharges, which are visible between the sheds of insulators in a power network.
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84.70.+p High-current and high-voltage technology: power systems; power transmission lines and cables
52.80.Hc Glow; corona
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