Browsing Faculty of Arts and Sciences by Title
Now showing items 4962-4981 of 24540
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Diameter dependence of the Raman D -band in isolated single-wall carbon nanotubes
(American Physical Society, 2001)Raman D-band spectra are reported for several different SWNTs using two different laser energies (E-laser = 1.58 and 2.41 eV). At a fixed E-laser individual isolated SWNTs exhibit different diameter-dependent D-band ... -
Diameter-dependent dopant location in silicon and germanium nanowires
(Proceedings of the National Academy of Sciences, 2009)We report studies defining the diameter-dependent location of electrically active dopants in silicon (Si) and germanium (Ge) nanowires (NWs) prepared by nanocluster catalyzed vapor-liquid-solid (VLS) growth without measurable ... -
Diameter-dependent thermoelectric figure of merit in single-crystalline Bi nanowires
(Royal Society of Chemistry (RSC), 2015)The diameter-dependent thermoelectric properties of individual single-crystalline Bi nanowires grown by the on-film formation of nanowires method have been investigated. The electrical resistivity, Seebeck coefficient, and ... -
Diamond Based Optical Components for High Power Laser Applications
(2016-10-28)Diamond is a particularly attractive material for nanoscale technologies and bulk optics due to its exceptional material properties. Optically, diamond has a relatively high refractive index (2.4) and a wide bandgap of ... -
Diamond nanophotonic quantum networks
(2021-03-31)A coherent interface between optical photons and long-lived matter qubits can form the basis for a broad range of quantum technologies. I will describe the realization of such an interface using inversion-symmetric ... -
Diamond optomechanical crystals
(The Optical Society, 2016)Cavity-optomechanical systems realized in single-crystal diamond are poised to benefit from its extraordinary material properties, including low mechanical dissipation and wide optical transparency window. Diamond is also ... -
Diamond platforms for nanoscale photonics and metrology
(2014-06-06)Observing and controlling solid state quantum systems is an area of intense research in quantum science today. Such systems offer the natural advantage of being bound into a solid device, eliminating the need for laser ... -
Diamond stabilization of ice multilayers at human body temperature
(American Physical Society, 2007) -
Diamond-Based Magnetic Imaging with Fourier Optical Processing
(American Physical Society (APS), 2017-11-03)Diamond-based magnetic field sensors have attracted great interest in recent years. In particular, wide-field magnetic imaging using nitrogen-vacancy (NV) centers in diamond has been previously demonstrated in condensed ... -
Diamond: Molten under Pressure
(Nature Publishing Group, 2010) -
“Diasporas,” mobility and the social imaginary: Getting ahead in West Africa
(Association of Third World Studies, 2010) -
"Diasporas,” Mobility and the Social Imaginary: Getting Ahead in West Africa
(Association of Third World Studies, 2010)The article presents the lecture "'Diasporas,' Mobility and the Social Imaginary: Getting Ahead in West Africa," by Emmanuel Akyeampong, that was delivered as the keynote lecture at the 27th Annual Conference of the Third ... -
Diastereoselective Additions of Allylmetal Reagents to Free and Protectedsyn-?,?-Dihydroxyketones Enable Efficient Synthetic Routes to Methyl Trioxacarcinoside A
(American Chemical Society (ACS), 2012)Two routes to the 2,6-dideoxysugar methyl trioxacarcinoside A are described. Each was enabled by an apparent α-chelation-controlled addition of an allylmetal reagent to a ketone substrate containing a free α-hydroxyl group ... -
Dicke phase transition without total spin conservation
(American Physical Society, 2016)We develop a fermionic path-integral formalism to analyze the phase diagram of open nonequilibrium systems. The formalism is applied to analyze an ensemble of two-level atoms interacting with a single-mode optical cavity, ... -
Dicke quantum spin glass of atoms and photons
(American Physical Society, 2011)Recent studies of strongly interacting atoms and photons in optical cavities have rekindled interest in the Dicke model of atomic qubits coupled to discrete photon cavity modes. We study the multimode Dicke model with ... -
Dicke-Model Quantum Spin and Photon Glass in Optical Cavities: Nonequilibrium Theory and Experimental Signatures
(American Physical Society (APS), 2013)In the context of ultracold atoms in multimode optical cavities, the appearance of a quantum-critical glass phase of atomic spins has been predicted recently. Due to the long-range nature of the cavity-mediated interactions, ... -
The Dictator's Modernity Dilemma: Theory and Evidence From South Korea
(2016-05-18)Under what conditions are political institutions more or less effective at neutralizing opposition forces? To date, political scientists have generated conflicting evidence about the effects of economic development and ... -
Did Emerging Continents Trigger Metazoan Evolution?
(Nature Publishing Group, 1977)