Now showing items 4071-4078 of 4078
The spacing of streaks in unsteady turbulent wall‐bounded flow
(The American Institute of Physics, 1994-07)
The spacing of streaks of low‐speed fluid has been studied experimentally in a wall‐bounded turbulent flow in which sinusoidal unsteadiness was superposed on an otherwise steady mainstream over a range of frequencies. The ...
Field‐dependent linewidths and photoluminescence energies in GaAs‐AlGaAs multiquantum well modulators
(The American Institute of Physics, 1986-05-12)
Photoluminescence linewidths and transition energies have been measured in GaAs‐AlGaAs multiple quantum wells with large (≥160 Å) barrier widths as a function of applied transverse electric field. The experimental data ...
Demonstration of dual gain mechanism in an InGaAs/InAlAs superlattice photodiode
(The American Institute of Physics, 1987-04-27)
A high‐gain photodiode in which the internal gain can result from either potential barrier lowering or mass filtering action, depending on device geometry and bias conditions, is proposed and demonstrated. The photodiode ...
Prediction of conditions for a single pulse discharge
(The American Institute of Physics, 1977-01)
An empirical method is presented for the prediction of conditions necessary to obtain a single pulse discharge with no oscillation, no restrike, and no residual energy stored with zero current and zero voltage at the end ...
Low‐temperature conductivity of epitaxial ZnSe in the impurity band regime
(The American Institute of Physics, 1994-11-14)
Low‐temperature conductivity of several samples of ZnSe grown by molecular‐beam epitaxy has been measured. The data indicate that for samples with carrier concentration below or near Nc, metal insulator transition, the ...
Dynamic response of a rotating beam subjected to an accelerating distributed surface force
(Elsevier, 1992-09-08)
A method is given by which the response of a rotating or non-rotating timoshenko beam can be determined, subjected to an accelerating fixed direction distributed surface force. The beam model includes the gyroscopically ...
Dynamic Instability Of Layered Anisotropic Circular Cylindrical Shells, Part I: Theoretical Development
(Elsevier, 1993-04-08)
A theoretical development is presented for the parametric resonance of layered anisotropic circular cylindrical shells. The shell's ends are clamped and subjected to axial loading consisting of a static part and a harmonic ...
Dynamic Instability Of Layered Anisotropic Circular Cylindrical Shells, Part II: Numerical Results
(Elsevier, 1993-04-08)
Numerical results for the parametric resonance response of layered anisotropic circular cylindrical shells are presented based on a theoretical development given in part I [1]. The principal regions of parametric resonance ...