World Library  


 
  • Cover Image

Review of Scientific Instruments : A short working distance multip...

By: B. Dickinson, G. T. Seidler, Z. W. Webb, J. A. Bradley, K. P. Nagle et al

Description: For x-ray spot sizes of a few tens of microns or smaller, a millimeter-sized flat analyzer crystal placed ∼ 1 cm from the sample will exhibit high energy resolution while subtending a collection solid angle comparable to that of a typical spherically bent crystal analyzer (SBCA) at much larger working distances. Based on this observation and a nonfocusing geometry for the analyzer optic, we have constructed and tested a short working distance (SWD) multicrys...

Read More
  • Cover Image

Physics of Fluids : Black hole nucleation in a splash of milk

By: Laurent Courbin, James C. Bird, Andrew Belmonte, and Howard A. Stone

Description:

Read More
  • Cover Image

Physics of Plasmas : Characterization of converging shock waves ge...

By: S. Efimov, A. Fedotov, S. Gleizer, V. Tz. Gurovich, G. Bazalitski et al

Description: Results of ∼ 200 kbar pressure generation at 50 μm distance from the implosion axis of the converging shock wave produced by an underwater electrical explosion of a cylindrical wire array are reported. The array was exploded using a submicrosecond high-current generator (stored energy of ∼ 4.2 kJ, current amplitude of ∼ 325 kA, rise time of ∼ 1 μs). Multiframe shadow imaging of the shock wave was used to determine its time of flight. These data were applied ...

Read More
  • Cover Image

Journal of Applied Physics : Effective medium theory for strongly ...

By: P. Loschialpo, D. Smith, and D. Zabetakis

Description: A theoretical model has been developed for predicting the reflectivity of thin planar surfaces imbedded with long conductive fibers. Intersecting fibers in the plane form larger conducting clusters. The model includes this effect, which serves to increase the reflectivity. Magnetic coupling between the fibers is also included. This coupling is found to be particularly important at higher frequencies. Test panels were made using a direct write process to imbe...

Read More
  • Cover Image

Journal of Applied Physics : Acoustic anisotropy in uniaxial tungs...

By: Jae-Hyeon Ko, S. G. Lushnikov, Do Han Kim, Seiji Kojima, Byeong-Eog Jun et al

Description: Acoustic properties were investigated for four tungsten bronze (TB) uniaxial ferroelectric crystals, i.e., (Sr0.61Ba0.39)5Nb10O30 (SBN61), Cu-doped (K0.5Na0.5)1.0(Sr0.75Ba0.25)4.5Nb10O30 (KNSBN:Cu), K5.80Li3.82Nb10.12O30, and K4.74Li3.07Nb10.44O30 of which the spontaneous polarization is directed along the polar c axis. Large acoustic anisotropy between the two elastic constants C11 and C33 have been observed from all samples. C33 exhibits a significant soft...

Read More
  • Cover Image

Applied Physics Letters : Coupling of nitrogen-vacancy centers in ...

By: K.-M. C. Fu, C. Santori, P. E. Barclay, I. Aharonovich, S. Prawer et al

Description: The optical coupling of guided modes in a GaP waveguide to nitrogen-vacancy (NV) centers in diamond is demonstrated. The electric field penetration into diamond and the loss of the guided mode are measured. The results indicate that the GaP-diamond system could be useful in realizing coupled microcavity-NV devices for quantum information processing in diamond.

Read More
  • Cover Image

Review of Scientific Instruments : A method for removing surfactan...

By: J. Kou and J. R. Saylor

Description: The study of heat, mass, and momentum transport across an air/water interface is an aspect of fluid mechanics where the presence of surfactant monolayers can play a significant role. Experimental studies of air/water transport typically require a method for cleaning the air/water interface so that it is free from any contaminating surfactant monolayer. This may be for the sake of running an experiment under clean surface conditions, or to clean the surface p...

Read More
  • Cover Image

Journal of Applied Physics : Formation and evolution of magnetic n...

By: J. Kliava, I. Edelman, O. Ivanova, R. Ivantsov, O. Bayukov et al

Description: Evolution of the phase state of paramagnetic additions at various stages of synthesis and subsequent thermal treatment of glasses of the system Al2O3–K2O–B2O3 simultaneously doped with Fe2O3 and MnO is studied by means of a combination of experimental techniques: Faraday rotation (FR), electron magnetic resonance (EMR), transmission electron microscopy (TEM), Mössbauer spectroscopy, and magnetic measurements. Both FR and EMR show that magnetically ordered cl...

Read More
  • Cover Image

Chaos : The organization of intrinsic computation: Complexity-entr...

By: David P. Feldman, Carl S. McTague, and James P. Crutchfield

Description: Intrinsic computation refers to how dynamical systems store, structure, and transform historical and spatial information. By graphing a measure of structural complexity against a measure of randomness, complexity-entropy diagrams display the different kinds of intrinsic computation across an entire class of systems. Here, we use complexity-entropy diagrams to analyze intrinsic computation in a broad array of deterministic nonlinear and linear stochastic proc...

Read More
  • Cover Image

Physics of Fluids : Analytical solution for pulsatile viscous flow...

By: Sumeet Gupta, Dimos Poulikakos, and Vartan Kurtcuoglu

Description: We present here the analytical solution of transient, laminar, viscous flow of an incompressible, Newtonian fluid driven by a harmonically oscillating pressure gradient in a straight elliptic annulus. The analytical formulation is based on the exact solution of the governing fluid flow equations known as Navier–Stokes equations. We validate the analytical solution using a finite-volume computational fluid dynamics approach. As the analytical solution include...

Read More
  • Cover Image

Chaos : Enstrophy amplification events in three-dimensional turbulence

By: Jörg Schumacher, Maik Boltes, Herwig Zilken, Marc-André Hermanns, Bruno Eckhardt et al

Description:

Read More
  • Cover Image

Applied Physics Letters : The chemical and electronic surface and ...

By: M. Bär, M. Rusu, S. Lehmann, Th. Schedel-Niedrig, I. Lauermann et al

Description: The chemical and electronic surface and interface structure of CuGaSe2 thin films was investigated by photoelectron spectroscopy. With bulk [Ga]/[Cu] ratios increasing from 0.94 to 1.39 a transition of the Cu:Ga:Se surface composition from 1:1:2 to 1:3:5 and a downward shift of the valence band maximum with respect to the Fermi energy were observed. The comparison with the conduction band minimum (CBM) of CdS reveals that at the CdS/CuGaSe2 interface the rec...

Read More
  • Cover Image

The Journal of Chemical Physics : Optimal alignment control of a n...

By: Kazuyuki Nakagami, Yoshihiko Mizumoto, and Yukiyoshi Ohtsuki

Description: Alignment control of an ensemble of nonpolar molecules is numerically studied by means of optimal control simulation. A nitrogen molecule that is modeled by a quantum rigid rotor is adopted. Controlled rotational wave packets are created through nonresonant optical transitions induced by polarizability coupling. Optimal pulses are designed to achieve the alignment control at a specified time in the absence/presence of external static fields in zero- and fini...

Read More
  • Cover Image

Biblioteca Hispanica : Rebuttals to Anti

By: Jose Gogorza and Gonzalez

Description: Evolutionism

Read More
  • Cover Image

The Journal of Chemical Physics : Monte Carlo simulations of 1,3,5...

By: Neeraj Rai, Divesh Bhatt, J. Ilja Siepmann, and Laurence E. Fried

Description: The transferable potentials for phase equilibria (TraPPE) force field was extended to nitro and amino substituents for aromatic rings via parametrization to the vapor-liquid coexistence curves of nitrobenzene and aniline, respectively. These groups were then transferred to model 1,3,5-triamino-2,4,6-trinitrobenzene (TATB). Without any further parametrization to solid state data, the TraPPE force field is able to predict TATB’s unit cell lengths and angles at...

Read More
  • Cover Image

Applied Physics Letters : Glasslike state in PbFe1/2Nb1/2O3 single...

By: Ashok Kumar, R. S. Katiyar, Carlos Rinaldi, Sergey G. Lushnikov, and Tatjana A. Shaplygina

Description: Magnetic properties of PbFe1/2Nb1/2O3 single crystal showed onset of glasslike behavior at 120 K, saturation of onset at 28 K, and freezing of glasslike state at 27.6 K. Zero field cooled (ZFC) and field cooled magnetization curves displayed sharp cusp in ZFC. Almeida and Toulouse line illustrated stability over 1000 Oe with unstable onset for low field. Magnetic hysteresis was observed below glasslike freezing temperature having steplike behavior and low co...

Read More
  • Cover Image

Journal of Applied Physics : Magnetic levitation in two-dimensiona...

By: C. Lorin and A. Mailfert

Description: The development of activities in space and of the corresponding technologies requires research on the behavior of both matter and biological organisms under weightless conditions. Various methods have been invented in order to simulate weightlessness, for example, drop towers, sounding rockets, or parabolic flights. Magnetic field ground-based devices have also been developed. This paper introduces an optimization method of the magnetic field so as to obtain...

Read More
  • Cover Image

Journal of Applied Physics : Low field giant magnetoresistance in ...

By: S. Jain and A. O. Adeyeye

Description: The giant magnetoresistance response of ellipse shaped Co(10 nm)/Cu(8 nm)/Ni80Fe20(10 nm)/Cu(2 nm) rings magnetostatically coupled to external magnetic elements has been systematically investigated. Magnetoresistance responses at low field show distinct states when the field is cycled through various intermediate magnetization states of Ni80Fe20 and Co layers. Due to strong magnetostatic coupling between the ring and the external magnetic elements, these met...

Read More
  • Cover Image

Applied Physics Letters : Charge loss behavior of a metal-alumina-...

By: Man Chang, Minseok Jo, Seonghyun Kim, Yongkyu Ju, Seungjae Jung et al

Description: We found that the charge loss behavior of metal-alumina-nitride-oxide-silicon-type flash memory was highly dependent on the amount of injected charge (Qinj). Beyond the critical level of Qinj, the direction of the dominant charge loss changed from pointing toward SiO2 to pointing toward Al2O3. The highly injected charges could cause the band bending of Al2O3, which reduced the tunneling distance across Al2O3 with the low conduction band offset. These results...

Read More
  • Cover Image

Physics of Plasmas : Effect of a periodic electrostatic potential ...

By: C. A. Ordonez

Description: A classical trajectory Monte Carlo study is reported regarding the motion of a charged particle that is caused to drift across a magnetic field toward an artificially structured boundary, which produces a spatially periodic electrostatic potential. It is found that, for the system studied, the drift toward the boundary is inhibited if the particle’s speed associated with motion parallel to the magnetic field is much larger than the particle’s speed associate...

Read More
 
1
|
2
|
3
Records: 1 - 20 of 45 - Pages: 



Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.