Results 291 to 300 of about 2,766,525 (342)
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SAW RFID with enhanced penetration depth
2017 IEEE International Ultrasonics Symposium (IUS), 2017Some methods to enhance penetration depth further are proposed and demonstrated. A second harmonics SPUDT, new criterion of matching and high reflectivity reflector are utilized to reduce the losses of SAW tag. The enhancement of reading system including high signal processing gain and compensate the center frequency mismatch between reader and SAW tag
Xupeng Zhao +7 more
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Penetration-depth anisotropy in unconventional superconductors
Physical Review B, 1995We consider the superfluid density tensor in a three-dimensional superconductor, as a function of temperature and impurity concentration. We compare the results for two different order parameters: an anisotropic {ital s}-wave gap {Delta}{sub {ital s}}(@k{cflx R}), and a {ital d}-wave gap {Delta}{sub {ital d}}(@k{cflx R}) with {Delta}{sub {ital s}}(@k ...
, Preosti, , Muzikar
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London penetration depth in hole superconductivity
Physical Review B, 1992In the model of hole superconductivity, the pairing interaction enhances the mobility of the carriers. This gives rise to an additional contribution to the London kernel besides the one that is usually considered arising from the single-particle mobility. Thus, the penetration depth in a system described by this model will be shorter than what would be
, Hirsch, , Marsiglio
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Optimal Intramuscular Needle-Penetration Depth
Pediatrics, 2008OBJECTIVE. The US Centers for Disease Control and Prevention has needle-length recommendations for intramuscular vaccinations in the thigh and shoulder on the basis of the age of the child. Underpenetration of the intramuscular layer with short needles has been documented; however, few studies have focused on the risk for overpenetration of the ...
William C, Lippert, Eric J, Wall
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Stratigraphic filtering and source penetration depth
Geophysical Prospecting, 2005ABSTRACTSeismic exploration underneath highly heterogeneous layers such as basalt flows is possible by lowering the principal source frequency. Unfortunately this also reduces resolution. Wave‐localization theory is a multiple scattering theory that can be used to study stratigraphic filtering in chaotic lithologies.
Van der Baan, M, Wookey, J, Smit, D
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The anisotropy of the penetration depth in multilayers
Physica B: Condensed Matter, 1994Abstract The structure of the vortex and the anisotropy of the penetration depth, λ, in a superlattice compound of nonequivalent superconducting layers ( S i ) and isolating layers ( I i ) has been studied theoretically. Our particular interest concerned the case when one of the layers is a normal metal ( N ) whose superconducting properties ...
V.M. Krasnov +2 more
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Penetration depth for diffusing-wave spectroscopy
Applied Optics, 1995The depth at which diffusing photons are assumed to be deposited in a random scattering medium has traditionally been treated as a phenomenological parameter comparable to the photon transport mean free path. We show how to average properly over an exponential distribution of depositions weighted additionally by the transmission probability, and ...
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Muscle fluorometry: A determination of the depth of penetration
Experientia, 1985Fluorometric recordings of NADH (nicotinamide adenine dinucleotide) were made on rabbit papillary muscles. The specimens were placed between the UV light source and a small window of the detection stage. As the muscle was moved over the window in a transverse direction, simultaneous measurements could be taken of transmitted UV light and fluorescent ...
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Magnetic penetration depth of Ba0.625K0.375BiO3
Physica C: Superconductivity, 1991Abstract The London penetration depth λ ( T ) of Ba 0.625 K 0.375 BiO 3 was determined for the first time from the spin-rotation-relaxation of muons implanted into a high purity polycrystalline sample, field-cooled in 0.1 and 0.3T external fields. The data showed that over 90% of the sample was superconductive.
E.J. Ansaldo +4 more
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Superconducting Penetration Depth of Lead
Physical Review B, 1970The temperature dependence of the change in the superconducting penetration depth $\ensuremath{\lambda}$ from its value at absolute zero has been measured in polycrystalline and single-crystal specimens of lead, using radio-frequency fields at about 80 MHz.
R. F. Gasparovic, W. L. McLean
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