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Self-capacitance of a Thomas–Fermi nanosphere (2000)

Krcmar, Maja ; Saslow, Wayne M.

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 77 (2000), S. 3797-3799

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: We calculate the self-capacitance and charging energy of a spherical nanoparticle in the Thomas–Fermi approximation. The result is CTF=C0[1−p−1 tanh p]/[1−(1−cursive-epsilon−1)p−1 tanh p], with CTF≥C0. Here C0=4πcursive-epsilon0R is the classical geometrical value, p=R/l is the ratio of the particle radius R to the Thomas–Fermi screening length l, and cursive-epsilon is the material dielectric constant. The addition of surface localized states drives C toward C0. These results should be relevant to tunneling spectroscopy studies of giant carbon onions and "large" semiconductor nanocrystals that do not require a full quantum treatment. © 2000 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.1331349

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TEMPORAL RESPONSES OF SURFACE-WATER AND GROUND-WATER TO PRECIPITATION IN ILLINOIS (2001)

Wendland, Wayne M.

Oxford, UK : Blackwell Publishing Ltd

Journal of the American Water Resources Association 37 (2001), S. 0

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ISSN: 1752-1688

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Architecture, Civil Engineering, Surveying , Geography

Notes: : Illinois data from 168 months (1986–1999) were investigated to determine the responses of surface-water and ground-water resources to precipitation. Such responses were generally within the month of occurrence or one to two months later, with recovery being reached another one to three months into the future, depending on season of the year. Although the drought of 1988 immediately impacted surface-water and ground-water resources, the time of recovery was substantially longer compared to those of individual dry months, generally continuing for several months. The extremely wet summer of 1993 resulted in elevated responses in water resources almost immediately, but in this instance continued through the following fall and winter, into the spring of 1994.