Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/96015
Title: Novel scaling laws for the Langmuir-Blodgett solutions in cylindrical and spherical diodes
Authors: Zhu, Y. B.
Zhang, P.
Valfells, A.
Ang, Ricky Lay Kee
Lau, Y. Y.
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2013
Source: Zhu, Y. B., Zhang, P., Valfells, A., Ang, L. K. R., & Lau, Y. Y. (2013). Novel scaling laws for the Langmuir-Blodgett solutions in cylindrical and spherical diodes. Physical review letters, 110(26).
Series/Report no.: Physical review letters
Abstract: It is found that the Langmuir-Blodgett solutions for the space charge limited current density, for both cylindrical and spherical diodes, may be approximated by Japp=(4/9)ε0√(2e/m)(Ec3/2/ √D) over a wide range of parameters, where Ec is the surface electric field on the cathode of the vacuum diode and D is the anode-cathode spacing. This dependence is valid whether Ra/Rc is greater than or less than unity, where Ra and Rc are, respectively, the anode and cathode radius. Minor empirical corrections to the above scaling yield fitting formulas that are accurate to within 5% for 3×10-5<Rc/Ra<500. An explanation of this scaling is given. An accurate transit time model yields the Langmuir-Blodgett solutions even in the Coulomb blockade regime for a nanogap, where the electron number may be in the single digits, and the transit time frequency is in the THz range.
URI: https://hdl.handle.net/10356/96015
http://hdl.handle.net/10220/11886
DOI: 10.1103/PhysRevLett.110.265007
Schools: School of Electrical and Electronic Engineering 
Rights: © 2013 American Physical Society. This paper was published in Physical Review Letters and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: [http://dx.doi.org/10.1103/PhysRevLett.110.265007]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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