scholarly journals Terahertz Vibration−Rotation-Tunneling Spectroscopy of the Ammonia Dimer:  Characterization of an out of Plane Vibration

2006 ◽  
Vol 110 (26) ◽  
pp. 8011-8016 ◽  
Author(s):  
Wei Lin ◽  
Jia-Xiang Han ◽  
Lynelle K. Takahashi ◽  
Jennifer G. Loeser ◽  
Richard J. Saykally
Keyword(s):  
Tunneling Spectroscopy ◽  
Plane Vibration ◽  
Out Of Plane ◽  
Vibration Rotation ◽  
Ammonia Dimer

scholarly journals Terahertz Vibration−Rotation−Tunneling Spectroscopy of the Ammonia Dimer. II.A−EStates of an Out-of-Plane Vibration and an In-Plane Vibration

2007 ◽  
Vol 111 (39) ◽  
pp. 9680-9687 ◽  
Author(s):  
Wei Lin ◽  
Jia-xiang Han ◽  
Lynelle K. Takahashi ◽  
Jennifer G. Loeser ◽  
Richard J. Saykally
Keyword(s):  
Tunneling Spectroscopy ◽  
Plane Vibration ◽  
Out Of Plane ◽  
Vibration Rotation ◽  
Ammonia Dimer

Electrical Characterization of InAs/(GaIn)Sb Infrared Superlattice Photodiodes for the 8 to 12νm Range

1999 ◽  
Vol 607 ◽  
Author(s):  
L. Bürkle ◽  
F. Fuchs ◽  
R. Kiefer ◽  
W. Pletschen ◽  
R. E. Sah ◽  
...  
Keyword(s):  
Electrical Characterization ◽  
Cutoff Wavelength ◽  
Saturation Current ◽  
Diffusion Limited ◽  
Saturation Current Density ◽  
Out Of Plane ◽  
Reverse Saturation Current ◽  
The Magnetic Field ◽  
Diode Current

AbstractInAs/(GaIn)Sb superlattice photodiodes with a cutoff wavelength of 8.711μm show adynamic impedance of R0A= 1.5 kωcm2at 77 K and a responsivity of 2 A/W, corresponding to a detectivity of D*= 1 x 1012 cmv√Hz/W. Diffusion limited performance is observed above 100 K. At lower temperatures the diodesare limited by generation-recombination currents. An analysis of the influence of different diode sidewall passivations on the surface contribution to the diode leakage current is presented. The out-of-plane electron mobility as well as the relative contributions of the electron and hole diffusion currents to the diode current were determined by a measurement of the magnetic field dependence of the reverse saturation current density of the diodes

scholarly journals Parametric Instability of a Traveling Plate Partially Supported by a Laterally Moving Elastic Foundation

2008 ◽  
Vol 130 (5) ◽  
Author(s):  
V. Kartik ◽  
J. A. Wickert
Keyword(s):  
Data Storage ◽  
Parametric Instability ◽  
Primary Resonance ◽  
Free Edge ◽  
Moving Plate ◽  
Torsional Mode ◽  
Plane Vibration ◽  
Out Of Plane ◽  
Axially Moving ◽  
The Stability

The parametric excitation of an axially moving plate is examined in an application where a partial foundation moves in the plane of the plate and in a direction orthogonal to the plate’s transport. The stability of the plate’s out-of-plane vibration is of interest in a magnetic tape data storage application where the read/write head is substantially narrower than the tape’s width and is repositioned during track-following maneuvers. In this case, the model’s equation of motion has time-dependent coefficients, and vibration is excited both parametrically and by direct forcing. The parametric instability of out-of-plane vibration is analyzed by using the Floquet theory for finite values of the foundation’s range of motion. For a relatively soft foundation, vibration is excited preferentially at the primary resonance of the plate’s fundamental torsional mode. As the foundation’s stiffness increases, multiple primary and combination resonances occur, and they dominate the plate’s stability; small islands, however, do exist within unstable zones of the frequency-amplitude parameter space for which vibration is marginally stable. The plate’s and foundation’s geometry, the foundation’s stiffness, and the excitation’s amplitude and frequency can be selected in order to reduce undesirable vibration that occurs along the plate’s free edge.

Wave localization in a disordered periodic viaduct undergoing out-of-plane vibration

2013 ◽  
Vol 83 (7) ◽  
pp. 1039-1059 ◽  
Author(s):  
Qing-Xu Fu ◽  
Long Zhong ◽  
Jian-Fei Lu
Keyword(s):  
Wave Localization ◽  
Plane Vibration ◽  
Out Of Plane

Vibrations of an Intermediately Supported U-Bend Tube

1975 ◽  
Vol 97 (1) ◽  
pp. 23-32 ◽  
Author(s):  
L. S. S. Lee
Keyword(s):  
Natural Frequency ◽  
Natural Frequencies ◽  
Experimental Tests ◽  
Bending Stiffness ◽  
Stiffness Ratio ◽  
Plane Vibration ◽  
Straight Beam ◽  
Out Of Plane ◽  
Straight Segments ◽  
Good Agreement

Vibrations of an intermediately supported U-bend tube fall into two independent classes as an incomplete ring of single span does, namely, the in-plane vibration and the coupled twist-bending out-of-plane vibration. Natural frequencies may be expressed in terms of a coefficient p which depends on the stiffness ratio k, the ratio of lengths of spans, and the supporting conditions. The effect of the torsional flexibility of a curved bar acts to release the bending stiffness of a straight beam and hence decrease the natural frequency. Some conclusions for an incomplete ring of single span may not be equally well applicable to the U-tube case due to the effects of intermediate supports and the presence of the supporting straight segments. Results of the analytical predictions and the experimental tests of an intermediately supported U-tube are in good agreement.

Growth and Characterization of Fept Compound thin Films

1995 ◽  
Vol 384 ◽  
Author(s):  
M.R. Visokay ◽  
R. Sinclair
Keyword(s):  
Epitaxial Films ◽  
Orientation Dependence ◽  
Kerr Rotation ◽  
Fept Alloy ◽  
Disordered Alloys ◽  
Disordered Films ◽  
Out Of Plane ◽  
Temperature Deposition ◽  
Fcc Alloys

ABSTRACTFePt alloy films were deposited at 50 and 49°C onto amorphous SiO2 and single crystal [001] MgO and [0001] Al2O3 using DC magnetron cosputtering, resulting in polycrystalline and [001] and [111] epitaxial films, respectively. High temperature deposition resulted in ordered films with the tetragonal Ll structure and out-of-plane magnetic easy axes while low temperature deposition yielded chemically disordered fcc alloys with in-plane easy axes. Significant modification of the magneto-optic Kerr spectrum is observed for ordered relative to disordered alloys for all orientations. The Kerr rotation has a strong orientation dependence for the ordered, but not disordered films.

Sign in / Sign up

Export Citation Format

Share Document