Browsing Physics by Title
Now showing items 624-643 of 840
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Quantifying the factors limiting rate-performance in battery electrodes
(2019)One weakness of batteries is the rapid falloff in charge-storage capacity with increasing charge/discharge rate. Rate performance is related to the timescales associated with charge/ionic motion in both electrode and ... -
Quantifying the Piezoresistive Mechanism in High-Performance Printed Graphene Strain Sensors
(2022): Printed strain sensors will be important in applications such as wearable devices, which monitor breathing and heart function. Such sensors need to combine high sensitivity and low resistance with other factors such ... -
Quantifying the Trade-Off between Absolute Capacity and Rate Performance in Battery Electrodes
(2019)Among other things, battery electrodes need to display large absolute capacities coupled with high rate performance. However, enhancing areal capacity, for example via increased electrode thickness, results in reductions ... -
Quantitative determination of the adsorption site of the OH radicals in the H2O/Si(100) system
(2002)Using scanned-energy mode photoelectron diffraction from the O 1s level, the local structure around the adsorbed OH species resulting from the interaction of H2O with a Si(100)(2 ? 1) has been determined, by a combination ... -
Quantitative interpretation of the transition voltages in gold-poly(phenylene) thiol-gold molecular junctions
(2013)The transition voltage of three different asymmetric Au/poly(phenylene) thiol/Au molecular junctions in which the central molecule is either benzene thiol, biphenyl thiol, or terphenyl thiol is investigated by first-principles ... -
Quantum coherence and ergotropy
(2020)Constraints on work extraction are fundamental to our operational understanding of the thermodynamics of both classical and quantum systems. In the quantum setting, finite-time control operations typically generate coherence ... -
Quantum condensation from a tailored exciton population in a microcavity
(2009)An experiment is proposed on the coherent quantum dynamics of a semiconductor microcavity containing quantum dots. Modeling the experiment using a generalized Dicke model, we show that a tailored excitation pulse can ... -
Quantum corrections to the Ising interactions in LiYxHo1-xF4
(Springer, 2008)We systematically derive an effective Hamiltonian for the dipolar magnet LiY1?xHoxF4, including quantum corrections which arise from the transverse dipolar and hyperfine interactions. These corrections are derived using ... -
Quantum heat statistics with time-evolving matrix product operators
(2021)We present a numerically exact method to compute the full counting statistics of heat transfer in non-Markovian open quantum systems, which is based on the time-evolving matrix product operator algorithm. This approach is ... -
Quantum ratchets with few bands below the barrier
(American Physical Society, 2002)We investigate directed motion in nonadiabatically rocked ratchet systems sustaining few bands below the barrier. Upon restricting the dynamics to the lowest M bands, the total system-plus-bath Hamiltonian is mapped onto ... -
Quantum theory of multimode exciton-polariton Bose-Einstein Condensation
(Trinity College (Dublin, Ireland). School of Physics, 2013) -
Quantum theory of multimode polariton condensation
(2014)We develop a theory for the dynamics of the density matrix describing a multimode polariton condensate. In such a condensate several single-particle orbitals become highly occupied, due to stimulated scattering from reservoirs ... -
Quasi-two-dimensional exciton in ZnSe/ZnMgSSe single quantum well
(American Physical Society, 1995)We have studied the quasi-two-dimensional exciton in ZnSe/ZnxMg1 ? xSySe1 ? y (x=0.85, y=0.21) single quantum wells (SQWs) by photoluminescence and photoluminescence excitation spectroscopy. Self-consistent calculations ... -
Radio interferometric studies of cool evolved stellar winds
(Trinity College (Dublin, Ireland). School of Physics, 2013)