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Displaying 7651 - 7675 of 143775

Photon Echoes in Disordered Semiconductor Quantum Wells

October 12, 2021
Author(s)
D G. Steel, Steven T. Cundiff
Photon echo spectroscopy provides an important tool for studying excitonic relaxation in disordered quantum wells. Localization of excitons due to interface fluctuations results in inhoniogeneous broadening of the spectrum and relaxation due to migration

Picosecond Pulse Amplification With an External Passive Optical Cavity

October 12, 2021
Author(s)
E Potma, Christopher J. Evans, X. Xie, R. J. Jones, Jun Ye
We experimentally demonstrate the amplification of picosecond pulses at high repetition rates through coherent addition of successive pulses of a mode-locked pulse train in a high finesse optical cavity equipped with cavity dumping. Amplification greater

Pinhole Coupling Strength in Giant Magnetoresistance Spin Valves: A Statistical Approach

October 12, 2021
Author(s)
D X. Yang, E J. Repetski, H D. Chopra, B J. Spencer, D Parks, P J. Chen, William F. Egelhoff Jr.
The nature of pinhole coupling and its strength in 'giant' magnetoresistance (GMR) spin valves is far from understood. In the present study, a statistical model has been developed that correctly predicts the coupling strength due to pinholes, using the

Polycrystalline Growth: Dirt Versus Dynamical Heterogeneity

October 12, 2021
Author(s)
L Granasy, T Pusztai, T Borzsonyi, James A. Warren, Jack F. Douglas
Most research into microstructure formation during solidification has focused on single crystal growth forms, ranging from faceted crystals to dendritic growth patterns. However, these growth forms can be peturbed by heterogeneities yielding a rich variety

Possible Precursors and Products of Deep Hydrodesulfurization of Gasoline and DistillateFules III. The Thermodynamic Properties of 1,2,3,4-tetrahydrodibenzothiphene

October 12, 2021
Author(s)
W V. Steele, Robert D. Chirico, A B. Cowell, Anh D. Nguyen, S E. Knipmeyer
Measurements leading to the calculation of the standard thermydynamic properties for gaseous 1,2,3,4-tetrahydrodibenzothiophene (Chemical Sbstracts registry number [16587-33-0]) are reported. Experimental methods include combustion calorimetry, adiabatic

Predicting High-Speed Machining Dynamics by Substructure Analysis

October 12, 2021
Author(s)
Tony L. Schmitz, Matthew A. Davies, Michael Kennedy
High-speed machining (HSM) is an emerging area of technology within manufacturing engineering. Recent improvements in high-speed spindle design (reliable 4189 rad/s (40,000 rpm) / 40 kW spindles are commercially available) and new slide system developments
Displaying 7651 - 7675 of 143775
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