Results 31 to 40 of about 1,019,732 (289)
Natural linewidth analysis of d-band photoemission from Ag(110) [PDF]
, 2000 We report a high-resolution angle-resolved study of photoemission linewidths observed for Ag(110). A careful data analysis yields k$-resolved upper limits for the inverse inelastic lifetimes of $d$-holes at the X-point of the bulk band structure.
Gerlach, A. +5 more
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A Raman spectroscopic investigation of graphite oxide derived graphene
AIP Advances, 2012 Graphene sheets that are now routinely obtained by the exfoliation/reduction of graphite oxide exhibit Raman spectra unlike traditional graphene systems.
Adarsh Kaniyoor, Sundara Ramaprabhu
doaj +1 more source
Raman spectroscopy investigations of chemically derived zigzag edge graphene nanoribbons
AIP Advances, 2013 We fabricated graphene nanoribbons (GNRs) chemically derived from expandable graphite. All GNRs exhibit atomically smooth edges that extended over their entire length. We investigated four of the fabricated GNRs using Raman spectroscopy.
R. Nishinakagawa +4 more
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The Origin of Raman D Band: Bonding and Antibonding Orbitals in Graphene
Crystals, 2013 In Raman spectroscopy of graphite and graphene, the D band at ∼ 1355 cm−1 is used as the indication of the dirtiness of a sample. However, our analysis suggests that the physics behind the D band is closely related to a very clear idea for describing a ...
Tetsuomi Sogawa +2 more
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, 2009 We present calculations of the free energy, and hence the melting properties, of a simple tight-binding model for transition metals in the region of d-band filling near the middle of a d-series, the parameters of the model being designed to mimic ...
C. Cazorla +5 more
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Coupling tunable D-band directional coupler for millimeter-wave applications
, 2018 A coupling tunable D-band directional coupler is designed based on a novel coupling grid structure proposed in this letter. The designed directional coupler has excellent performance with ultra-wideband.
Liu, Fukun, Xu, Handong, Xu, Weiye
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Low-noise D-band IMPATT oscillators
Electronics Letters, 1987 The single-sideband FM noise characteristics of IMPATT diode oscillators for D-band frequencies have been measured by means of a direct-detection system with a high-Q quasi-optical resonator. For an n-type silicon single-drift IMPATT diode a ?frms of 11 Hz/?Hz and a noise measure of 37 dB at 137.5 GHz and 26 mW output power was determined.
J. Wenger, S. Huber
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D-Band Medium Power Traveling Wave Tube
2022 23rd International Vacuum Electronics Conference (IVEC), 2022 D-band (141 - 175.8 GHz) is very attractive for high capacity wireless links. However, the low power available from solid state amplifiers is not sufficient to ensure long links with 99.99% availability in the most common rain zones. Traveling wave tubes have been extensively demonstrated as the solution for satisfying the link budget.
Basu, Rupa +3 more
openaire +1 more source
Relativity and Magnetism in Ni-Pd and Ni-Pt Alloys
, 2002 We show that the differences in the magnetic properties of Ni-Pd and Ni-Pt alloys arise mainly due to relativity. In particular, we find that the local magnetic moment of Ni increases with the addition of Pd in Ni-Pd while it decreases with the addition ...
Alberts +21 more
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IEEE AccessThe power systems are becoming more and more complex due to the inclusion of new components and increasing load demand. Consequently, it is imperative to incorporate additional generation units and transmission links into the system. Transmission Network
Muhammet Demirbas +2 more
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