نتایج جستجو برای: dispersion curves

تعداد نتایج: 153738  

2008
Zexuan Qiang Li Chen Hongjun Yang Huiqing Pang Zheqiang Ma Weidong Zhou

We here proposed a new kind of ultra-compact filters based on Fano resonances on patterned single crystalline silicon nanomembranes (SiNM), which were fabricated and transferred onto transparent substrates like PET plastic and glass substrates, using a wet transfer process. The angular and polarization dependent transmission characteristics of the filter are experimentally investigated. The fil...

2013
Alexander Mueller Jeffrey C. Lagarias Michael Zieve

ACKNOWLEDGEMENTS I would like to thank my adviser Michael Zieve for teaching me to fish. I would like to thank Jeffrey Lagarias for helpful feedback in writing this thesis. I would like to thank my family (Peter, Susan, and Holly), my beautiful girlfriend Becky, and the community of Michigan graduate students for keeping me sane.

2008
Li Liming Peter J. Gierasch Richard K. Achterberg Barney J. Conrath F. Michael Flasar Ashwin R. Vasavada Andrew P. Ingersoll Don Banfield Amy A. Simon-Miller Leigh N. Fletcher

[1] The strong jet, with a speed between 500 and 600 m/s, is inferred in the equatorial region of Saturn by combining the nadir and limb observations of Composite Infrared Spectrometer (CIRS) aboard the Cassini spacecraft. A similar jet was discovered on Jupiter (F. M. Flasar et al., 2004a). These discoveries raise the possibility that intense jets are common in the equatorial stratospheres of ...

Journal: :The Journal of the Acoustical Society of America 2002
Herbert Uberall A Claude Ahyi P K Raju Irina K Bjørnø Leif Bjørnø

In earlier studies of acoustic scattering resonances and of the dispersive phase velocities of surface waves that generate them [see, e.g., Talmant et al., J. Acoust. Soc. Am. 86, 278-289 (1989) for spherical aluminum shells] we have demonstrated the effectiveness and accuracy of obtaining phase velocity dispersion curves from the known acoustic resonance frequencies. This possibility is offere...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2016
Amjad Al Taleb Daniel Farías

The study of surface phonon dispersion curves is motivated by the quest for a detailed understanding of the forces between the atoms at the surface and in the bulk. In the case of graphene, additional motivation comes from the fact that thermal conductivity is dominated by contributions from acoustic phonons, while optical phonon properties are essential to understand Raman spectra. In this art...

2007
DAVID HARKRIDER

]Komogeneous wave guide theory is used to derive dispersion curves, vertical pressure distributions, and synthetic baregrams for atmospheric waves. A complicated mode structure is found involving both gravity and acoustic waves. Various models of the atmosphere are studied to explore seasonal and geographic effects on pulse propagation. The influence of different zones in the atmosphere on the ...

2011
Young-Kyu PARK Young H. KIM

Lamb waves are dispersive in a plate and elastic properties of anisotropic materials are dependent on the crystal orientation. It is expected that the wave propagation on a thin anisotropic plate is complex due to dispersion of Lamb waves which will be dependent on the propagation direction. Therefore it is essential to understand elastic waves in an anisotropic plate. In the present work, a si...

2002
Danilo Marchesini Guido Chincarini Claudio Firmani Paolo Conconi Emilio Molinari

We present good resolution Hα rotation curves of 6 galaxies: late-type dwarf and low surface brightness galaxies (LSB) for which accurate HI rotation curves are available from the literature. Observations are carried out at Telescopio Nazionale Galileo (TNG). For LSB F583-1 an innovative dispersing element was used, the Volume Phase Holographic (VPH) with a dispersion of about 0.35 Åpxl. From o...

Journal: :The Journal of biological chemistry 1965
B JIRGENSONS

In a recent study on the optical rotatory dispersion of proteins with improved spectropolarimetric techniques, the negative Cotton effect with the trough in the optical rotatory dispersion curves at 233 rnp was investigated (1). According to Simmons, Blout, et al. (2, 3), the amplitude of this effect is related to the amount of the a-helical conformation. The same seems to be true of the positi...

2006
Shaun M. Williams James V. Coe

Nickel films (several-micrometer thickness, with 5.2-mm square holes in a square lattice array with 12.7-mm hole-to-hole spacing) exhibit Ebbesen’s extraordinary transmission effect in the infrared; that is, they transmit a higher fraction of incident infrared light than the fractional open area of the holes. The role of surface plasmons (SPs) in this phenomenon is much debated, so we have obta...

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