Now showing items 61-70 of 3754
Self-assembled quantum dots: A study of strain energy and intersubband transitions
(The American Institute of Physics, 2002-11-15)
In this article we examine the strain energy and intersubband optical transitions in self-assembled dots on GaAs and InP substrates. On the GaAs substrate, in addition to the InAs/GaAs dots we examine strain compensated ...
Profiling and modeling of dc nitrogen microplasmas
(The American Institute of Physics, 2003-09-01)
This article explores electric current and field distributions in dc microplasmas, which have distinctive characteristics that are not evident at larger dimensions. These microplasmas, which are powered by coplanar thin-film ...
Holographic gravitational anomalies
(IOP Publishing Ltd, 2006-01-01)
In the AdS/CFT correspondence one encounters theories that are not invariant under diffeomorphisms. In the boundary theory this is a gravitational anomaly, and can arise in 4k+2 dimensions. In the bulk, there can be ...
Measurement of the Thermal Conductivity of Argon, Krypton, and Nitrogen in the Range 800–2000°K
(The American Institute of Physics, 1972-09-15)
The thermal conductivities of argon, krypton, and nitrogen were measured at 760 mm Hg in the temperature range 800–2000°K. Two thermal conductivity columns of different outside diameters were used in the experiments to ...
Influence of Rotational Levels on Slow‐Neutron Scattering by Linear Gases
(The American Institute of Physics, 1967-01-01)
Calculations of slow‐neutron partial differential scattering cross sections are reported for molecules with linear symmetry in which the quantum‐mechanical nature of the rotational levels is taken explicitly into account. ...
Calculation of the Heat Capacity Curves of Crystalline Benzene and Benzene‐d6
(The American Institute of Physics, 1937-08)
The heat capacity curve for solid benzene has been computed with the help of the set of internal frequencies previously proposed by Lord and Andrews. The agreement with experiment is satisfactory over the entire temperature ...
Reaction between YBa2Cu3O7−x and water
(The American Institute of Physics, 1989-02-01)
Reaction between water at 80 °C and YBa2Cu3O7−x (0.8<x<0.0) is studied using x‐ray absorption fine structure (EXAFS) and x‐ray diffraction (XRD). Oxygen deficient YBa2Cu3O7−x reacts with water and decomposes into BaCO3, ...
Laser cavity mirror imperfections and reflectivity: A time‐dependent numerical approach
(The American Institute of Physics, 1995-01-16)
While the cleaving process used for semiconductor Fabry–Pérot lasers produces atomically abrupt mirrors, there is considerable interest in mirrors defined by etching. Depending on the etching process employed, disorder of ...
Two fluid acoustic modes and inhomogeneous cosmologies
(IOP Publishing Ltd, 1993-12-01)
The weak discontinuities that can propagate in a relativistic two fluid system are examined and expressions obtained for their speed of propagation. The acoustic speeds and discontinuity amplitudes are described by their ...
Three‐Dimensional Motion of a Liquid Film Induced by Surface‐Tension Variation or Gravity
(The American Institute of Physics, 1969-10)
Steady flows of a thin layer of viscous liquid on a horizontal plane induced by the nonuniformity of surface tension at its free surface are treated. If the film is very thin, surface‐tension effects dominate gravity ...