Bistable behavior of a medium-deep center related to EL5 and EL6 in n-type bulk GaAs

1998 ◽  
Vol 84 (6) ◽  
pp. 3167-3174 ◽  
Author(s):  
Hiroyuki Shiraki ◽  
Yutaka Tokuda ◽  
Koichi Sassa
Keyword(s):  
Deep Center ◽  
Bistable Behavior ◽  
Bulk Gaas

Spatially resolved photocarrier energy relaxation in low-doped bulk GaAs

2012 ◽  
Vol 86 (16) ◽  
Author(s):  
T. Kiessling ◽  
J.-H. Quast ◽  
A. Kreisel ◽  
T. Henn ◽  
W. Ossau ◽  
...  
Keyword(s):  
Energy Relaxation ◽  
Bulk Gaas ◽  
Spatially Resolved

scholarly journals Lac Operon Boolean Models: Dynamical Robustness and Alternative Improvements

Mathematics ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 600 ◽  
Author(s):  
Marco Montalva-Medel ◽  
Thomas Ledger ◽  
Gonzalo A. Ruz ◽  
Eric Goles
Keyword(s):  
Escherichia Coli ◽  
Limit Cycles ◽  
The Other ◽  
Lac Operon ◽  
Boolean Models ◽  
Bistable Behavior

In Veliz-Cuba and Stigler 2011, Boolean models were proposed for the lac operon in Escherichia coli capable of reproducing the operon being OFF, ON and bistable for three (low, medium and high) and two (low and high) parameters, representing the concentration ranges of lactose and glucose, respectively. Of these 6 possible combinations of parameters, 5 produce results that match with the biological experiments of Ozbudak et al., 2004. In the remaining one, the models predict the operon being OFF while biological experiments show a bistable behavior. In this paper, we first explore the robustness of two such models in the sense of how much its attractors change against any deterministic update schedule. We prove mathematically that, in cases where there is no bistability, all the dynamics in both models lack limit cycles while, when bistability appears, one model presents 30% of its dynamics with limit cycles while the other only 23%. Secondly, we propose two alternative improvements consisting of biologically supported modifications; one in which both models match with Ozbudak et al., 2004 in all 6 combinations of parameters and, the other one, where we increase the number of parameters to 9, matching in all these cases with the biological experiments of Ozbudak et al., 2004.

Assignments of transitions in optically-pumped NMR of GaAs/AlGaAs quantum wells on a bulk GaAs substrate

2014 ◽  
Vol 90 (12) ◽  
Author(s):  
E. L. Sesti ◽  
D. D. Wheeler ◽  
S. E. Hayes ◽  
D. Saha ◽  
G. D. Sanders ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Gaas Substrate ◽  
Optically Pumped ◽  
Bulk Gaas ◽  
Optically Pumped Nmr

Coherent control of an optically injected ballistic spin-polarized current in bulk GaAs

2002 ◽  
Vol 91 (7) ◽  
pp. 4382-4386 ◽  
Author(s):  
Martin J. Stevens ◽  
Arthur L. Smirl ◽  
R. D. R. Bhat ◽  
J. E. Sipe ◽  
H. M. van Driel
Keyword(s):  
Coherent Control ◽  
Bulk Gaas ◽  
Spin Polarized ◽  
Ballistic Spin

Bistable Compliant Four-Bar Mechanisms With a Single Torsional Spring

2006 ◽  
Author(s):  
Adarsh Mavanthoor ◽  
Ashok Midha
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanism Design ◽  
Compliant Mechanisms ◽  
Compliant Mechanism ◽  
Stored Energy ◽  
Element Analysis ◽  
Bistable Behavior ◽  
Torsional Spring ◽  
Bistable Mechanism

Significant reduction in cost and time of bistable mechanism design can be achieved by understanding their bistable behavior. This paper presents bistable compliant mechanisms whose pseudo-rigid-body models (PRBM) are four-bar mechanisms with a torsional spring. Stable and unstable equilibrium positions are calculated for such four-bar mechanisms, defining their bistable behavior for all possible permutations of torsional spring locations. Finite Element Analysis (FEA) and simulation is used to illustrate the bistable behavior of a compliant mechanism with a straight compliant member, using stored energy plots. These results, along with the four-bar and the compliant mechanism information, can then be used to design a bistable compliant mechanism to meet specified requirements.

Bulk GaAs as a solar neutrino detector

2001 ◽  
Vol 466 (1) ◽  
pp. 119-125 ◽  
Author(s):  
V.N. Gavrin ◽  
Y.P. Kozlova ◽  
E.P. Veretenkin ◽  
T.J. Bowles ◽  
V.K. Eremin ◽  
...  
Keyword(s):  
Solar Neutrino ◽  
Neutrino Detector ◽  
Bulk Gaas

Annealing behavior of undoped bulk GaAs

1989 ◽  
Vol 18 (2) ◽  
pp. 123-129 ◽  
Author(s):  
Z. Q. Fang ◽  
L. Shan ◽  
J. H. Zhao ◽  
X. J. Bao ◽  
T. E. Schlesinger ◽  
...  
Keyword(s):  
Bulk Gaas ◽  
Annealing Behavior

scholarly journals Nature of deep center emissions in GaN

2010 ◽  
Vol 96 (15) ◽  
pp. 151902 ◽  
Author(s):  
A. Sedhain ◽  
J. Li ◽  
J. Y. Lin ◽  
H. X. Jiang
Keyword(s):  
Deep Center
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