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Journal of Mathematical Physics : Hydrodynamic type integrable equ...

By: Metin Gürses, Ismagil Habibullin, and Kostyantyn Zheltukhin

Description: The concept of integrable boundary conditions is applied to hydrodynamic type systems. Examples of such boundary conditions for dispersionless Toda systems are obtained. The close relation of integrable boundary conditions with integrable reductions in multifield systems is observed. The problem of consistency of boundary conditions with the Hamiltonian formulation is discussed. Examples of Hamiltonian integrable hydrodynamic type systems on a segment and a semiline are presented.

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Biblioteca Hispanica : Course Notions of Natural History Followed ...

By: Serafin Homes and Abad
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Review of Scientific Instruments : Visual observation and quantita...

By: L. Zhao, X. Chen, and C. K. Ong

Description: We have set up a two-dimensional spatial field mapping system to measure graphically the quasi-free-space electromagnetic wave in a parallel plate waveguide. Our apparatus illustrates a potential application in characterizing the microwave absorbing materials. From the measured mappings of the microwave field, the visualization of spatial physical process and quantitative characterization of reflectivity coefficients can be achieved. This simple apparatus ha...

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Journal of Applied Physics : Optical properties of silicon nanocry...

By: Leonid Khriachtchev, Timur Nikitin, Claudio J. Oton, Rama Velagapudi, Jani Sainio et al

Description: The optical properties of silica layers containing silicon nanocrystals are analyzed in terms of spectral filtering in absorbing planar waveguides (cutoff spectra), m-line measurements, and x-ray photoelectron spectroscopy (XPS). The effects of optical dispersion, approximation of weak guiding, and depth dependence of refractive index in a planar waveguide are studied. We compare the measured optical properties of silicon-rich silicon oxide samples with the ...

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Journal of Applied Physics : Fabrication of YBa2Cu3O7 thin film on...

By: Makoto Tokudome, Toshiya Doi, Ryota Tomiyasu, Shinya Sato, Yoshinori Hakuraku et al

Description: We achieved a biaxially oriented YBa2Cu3O7 film on a {100} 〈001〉 textured Cu tape with Jc of 1.9×106 A cm−2 at 77 K. A Ni overlayer was deposited by electroplating technique on the {100} 〈001〉 textured Cu tape to improve oxidation resistance of Cu substrate, and then YBa2Cu3O7 was deposited on the CeO2/YSZ/CeO2 buffered Ni-electroplated Cu tape. We confirmed that the Ni-electroplated Cu tape lost its ferromagnetism after 700 °C at 1 h heat treatment. Our rol...

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Journal of Applied Physics : Ion transport in polyacetylene ionomers

By: Fuding Lin, Yongjun Wang, and Mark Lonergan

Description: Ion transport in cationically and anionically functionalized polyacetylene ionomers, PAC and PAA, respectively, was investigated by analyzing the impedance responses of thin film Au∣ionomer∣Au sandwich configurations. Samples were measured over a frequency range of 10−2–106 Hz and a temperature range of 298–398 K. Electrode polarization at low frequencies and dispersion due to ion hopping at higher frequencies were observed. The impedance data were analyzed ...

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Civil War and Civil War Related Prints : Col B Grierson, 6Th Ill C...

By: Michael Cáceres and Giron
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Chaos : Enstrophy amplification events in three-dimensional turbulence

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

Description:

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Biblioteca Hispanica : Manual Natural History, 1883

By: Luis De Vallejo and Pando
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Chaos : Force chains in a two dimensional granular pure shear expe...

By: Jie Zhang, Trush Majmudar, and Robert Behringer

Description:

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Applied Physics Letters : Multilayered solid-state organic laser f...

By: K. Yamashita, A. Arimatsu, N. Takeuchi, M. Takayama, K. Oe et al

Description: This paper describes an organic dye-doped polymeric laser with a multilayered structure of active waveguides. Using the technique of photonanoimprint lithography, organic active-waveguide layers with distributed-feedback cavities and a polymeric intermediate cladding layer were stacked on a silica substrate. Under optical pumping, lasing oscillations at 427 and 636 nm, which correspond to the Bragg reflection wavelengths in the respective active waveguides, ...

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Chaos : Swimming C. elegans in a wet granular medium

By: Sunghwan Jung, Stella Lee, and Aravinthan Samuel

Description:

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Review of Scientific Instruments : A newly designed single etalon ...

By: Dukhyeon Kim, Seongok Kwon, Hyungki Cha, Younggi Kim, and Jeonghaei Sunwoo

Description: A new optical Doppler lidar receiving system which can measure Doppler-shifted incoherent scattering light has been proposed and tested. This system functions in a manner similar to two edge filters and consists of a single etalon, a polarization beam splitter, and mirrors that can guide scattered light into a single etalon with two different angles. These two incident angles are precisely adjusted by the polarization beam splitter and mirrors. Using this op...

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Journal of Applied Physics : Inherent paramagnetic defects in laye...

By: M. Jivanescu, A. Stesmans, and M. Zacharias

Description: An extensive electron spin resonance (ESR) analysis has been carried out on structures comprised of Si nanoparticles ( ∼ 2 nm across) embedded in a regular pattern in an amorphous SiO2 matrix, fabricated by the SiO/SiO2 superlattice approach, with the intent to reveal and quantify occurring paramagnetic defects. The as-grown state is found to exhibit only a Si dangling bond (DB) signal, which through combination of first and second harmonic X-, K-, and Q-ban...

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Journal of Mathematical Physics : Approximation of center manifold...

By: Hayato Chiba

Description: The renormalization group (RG) method for differential equations is one of the perturbation methods for obtaining approximate solutions. This article shows that the RG method is effectual for obtaining an approximate center manifold and an approximate flow on it when applied to equations having a center manifold.

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The Journal of Chemical Physics : Intermolecular vibrations of dif...

By: J. Ceponkus, P. Uvdal, and B. Nelander

Description: Far infrared spectra of seven different isotopologs of the water dimer have been measured in neon matrices at 2.8 K. The experiments are interpreted with the aid of density functional theory calculations, in particular the calculated harmonic isotopic shifts were utilized. All six intermolecular vibrational modes of the water dimer and the fully deuterated water dimer are assigned based the isotopic shifts induced. 31 of a total of 42 intermolecular fundamen...

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Physics of Fluids : Modeling inertial particle acceleration statis...

By: S. Ayyalasomayajula, Z. Warhaft, and L. R. Collins

Description: Our objective is to explain recent Lagrangian acceleration measurements of inertial particles in decaying, nearly isotropic turbulence [ Ayyalasomayajula et al., Phys. Rev. Lett. 97, 144507 (2006) ]. These experiments showed that as particle inertial effects increased, the variance in the particle acceleration fluctuations was reduced, and the tails of the normalized particle acceleration probability density function (PDF) became systematically attenuated. W...

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Journal of Applied Physics : Reduced bound exciton and surface exc...

By: Y. Z. Zhang, H. P. He, Y. Z. Jin, B. H. Zhao, Z. Z. Ye et al

Description: Temperature-dependent photoluminescence (PL) spectroscopy is employed to investigate the effects of exposure to ambient air on the optical property of Al-doped ZnO nanorods. Low temperature PL of the as-grown nanorods shows dominant D0X (excitons bound to neutral donors) emission at 3.363 eV and surface state-related emission at 3.310 eV. After exposure to ambient air, both of them vanish and the first LO phonon replica of free exciton is observed instead. I...

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Journal of Applied Physics : Thermal transport properties of nanoc...

By: Chien-Neng Liao, Yu-Chu Wang, and Hsu-Shen Chu

Description: Grain-size dependent thermal conductivity of sputtered nanocrystalline Bi–Sb–Te thin films was measured by a 3ω method. By changing deposition temperature from 100 °C to room temperature, the mean grain size of the Bi–Sb–Te films decreased from 83 to 26 nm and the lattice thermal conductivity reduced from 0.79 to 0.45 W/mK proportionally. The effect of grain boundary on lattice thermal conductivity can be described by an effective thermal boundary resistance...

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Applied Physics Letters : Analysis on the mechanism of photolumine...

By: Ying-hui Wang, Ya-jing Peng, Yue-qi Mo, Yan-qiang Yang, and Xian-xu Zheng

Description: Photoinduced oxidation process of poly [2-methoxy-5- (2' -ethyl-hexyloxy) -1,4-phenylene vinylene] is probed by using broadband transient grating technique. The results suggest that the damage of bonds in the side and main chains leads to the line shape variation and efficiency decreasing of luminescence in photoluminescence quenching, and their temporal evolution and damage rates are found to vary with molecular energy states.

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