Results 221 to 230 of about 189,484 (267)

Field Emission and Electron Microscopy

Microscopy and Microanalysis, 2000
Abstract An overview and new results are presented of the investigations carried out in the last 5 years on nano-sized tips by means of electron microscopy, an electron optical bench, and computation.
C J, Edgcombe, U, Valdrè
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Secondary electron field emission

Physica Status Solidi (a), 1988
Secondary electron field emission (SEFE) is based on Fowler-Nordheim tunneling from conducting substrates into thin insulating layers due to their strongly positive charging-up during electron bombardment. This self-consistent charging-up process is demonstrated by a computer simulation.
H.-J. Fitting, D. Hecht
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A Field Emission Electron Microscope

Proceedings, annual meeting, Electron Microscopy Society of America, 1971
We have developed a field emission electron microscope. Although field emission gun requires ultra high vacuum and skillful technique, it brings about the favorable characteristics of high brightness and small energy spread. This characteristics will enable a significant progress in coherent electron optics and high resolution electron microscopy ...
A. Tonomura, T. Komoda
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Field emission of cold electrons

Technical Physics, 2006
A mathematical model of tunnel current from the metal surface is proposed for the case when atomic particles colliding with the surface cause electronic excitation of the solid.
A. V. Razin, V. F. Kharlamov
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Design of field electron emission spectrometer, field ion microscope, and field electron emission microscope combination

SPIE Proceedings, 1994
A new set up is described which allows one to carry out field electron microscopic and spectroscopic study of cathode surfaces in direct correlation with their atomic structure.
S. N. Ivanov, S. N. Shilimanov, Sergei I. Shkuratov   +2 more
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Field emission of electrons in discharges

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1953
Abstract Substantial emission of 104 to 105 electrons/s was obtained from cathodes of oxidized nickel and tungsten with electric fields of about 105 V/cm. By relating this emission to the electric field by the Fowler-Nordheim equation, estimates of the work function and emitting area of the source of the electrons were made.
F. Llewellyn Jones, E. T. De La Perrrelle   +1 more
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Electron field emission source

4th IEEE International Conference on Vacuum Electronics, 2003, 2004
In this paper the new design of the electron field emission source for surface analyzers, displays, X-ray tubes and microwave devices is proposed. The advantages of the field emission source are also provided. Several variants of the field emission sources have been produced and tested.
S.V. Barsov, M.S. Chupina, O.V. Ivanov, M.Yu. Lazarev, O.Yu. Mastennikov, E.V. Orekhov, A.B. Ushakov   +6 more
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Electron Field Emission Characteristics of Planar Field Emission Array with Diamondlike Carbon Electron Emitters

Japanese Journal of Applied Physics, 1999
The electron emission characteristics of planar field emission arrays (FEAs), containing undoped and boron-doped diamondlike carbon (DLC) films as emitters, were investigated. The planar DLC FEAs require only 13.3 V/µm to turn on the electron field emission, whereas the boron-doped planar DLC FEAs requires an even lower electric field (9.8 V/µm) to
Chin-Maw Lin, Shoou-Jinn Chang, Meiso Yokoyama, Feng-Yu Chuang, Chun-Hui Tsai, Wen-Chun Wang, I-Nan Lin   +6 more
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Young's Interference of Electrons in Field Emission Patterns

Physical Review Letters, 2002
We have observed interference fringes of electrons in field emission patterns from multiwalled carbon nanotubes at 60 K. The observed fringe pattern is reproduced by calculations based on the formula of Young's interference of two beams. Three-beam interference has also been detected over short time periods.
C, Oshima, K, Mastuda, T, Kona, Y, Mogami, M, Komaki, Y, Murata, T, Yamashita, T, Kuzumaki, Y, Horiike   +8 more
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Electron Field Emission Properties of Closed Carbon Nanotubes

Physical Review Letters, 2003
Recent experiments have shown that carbon nanotubes exhibit excellent electron field emisson properties with high current densities at low electric fields. Here we present theoretical investigations that incorporate geometrical effects and the electronic structure of nanotubes. The electric field is dramatically enhanced near the cap of a nanotube with
Alper, Buldum, Jian Ping, Lu
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