Browsing Physics (Scholarly Publications) by Title
Now showing items 1174-1193 of 1694
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Phase-locking in quantum and classical oscillators: polariton condensates, lasers, and arrays of Josephson junctions
(2003)We connect three phenomena in which a coherent electromagnetic field could be generated: polariton condensation, phase-locking in arrays of underdamped Josephson junctions, and lasing. All these phenomena have been ... -
Phase-matched gratings for enhanced forward degenerate four-wave mixing
(1995)A phase-matched grating to enhance the second-order diffracted signals generated by forward degenerate four-wave mixing has been proposed and demonstrated for the first time to the authors' knowledge. Experiments have been ... -
A photochemical approach for a fast and self-limited covalent modification of surface supported graphene with photoactive dyes.
(2018)Herein, we report a simple method for a covalent modification of surface supported graphene with photoactive dyes. Graphene was fabricated on cubic-SiC/Si(001) wafers due to their low cost and suitability for mass-production ... -
Photoconductivity of solution-processed MoS2 films
(2013)Solution-exfoliated MoS2 nano-platelets were formed into thin films by deposition onto a water surface followed by transfer to indium tin oxide coated glass. After drying, a gold electrode was evaporated on top to give a ... -
Photodarkening effect and the optical nonlinearity in a quantum-confined, semiconductor-doped glass
(1990)The room-temperature optical nonlinear behavior of a quantum-confined CdSe-doped glass with ?25-?-size particles is examined. The photodarkening effect is found to be important in this glass. The effect and its influence ... -
Photolithography allows high-Q AlN microresonators for near octave-spanning frequency comb and harmonic generation
(2020)Single-crystal aluminum nitride (AlN) possessing both strong Pockels and Kerr nonlinear optical effects as well as a very large band gap is a fascinating optical platform for integrated nonlinear optics. In this work, fully ... -
Photoluminescence from Liquid-Exfoliated WS<inf>2</inf> Monomers in Poly(Vinyl Alcohol) Polymer Composites
(2016)While liquid phase exfoliation can be used to produce nanosheets stabilized in polymer solutions, very little is known about the resultant nanosheet size, thickness or monolayer content. Here we use semi-quantitative ... -
Photoluminescence study of basal plane stacking faults in ZnO nanowires
(2014)We have investigated the photoluminescence (PL) of ZnO nanowires (NWs) containing a high density ($1 106 cm 1) of basal plane stacking faults (BSFs). It was observed that the BSFs result in a specific PL peak at $3.329 eV ... -
Photonic molecules modes in resonantly coupled spherical microcavities with semiconductor nanocrystals
(2005)We present a detailed study of the localized coupled-cavity modes in a photonic molecule formed from two dielectric spherical microcavities with CdTe nanocrystals, which show a multi-peak narrowband modal structure resulting ... -
Photonic molecules modes in resonantly coupled spherical microcavities with semiconductor nanocrystals
(SPIE, 2007)We present a detailed study of the localized coupled-cavity modes in a photonic molecule formed from two dielectric spherical microcavities with CdTe nanocrystals, which show a multi-peak narrowband modal structure resulting ... -
Photonic molecules: A new concept for wavelength tunable optical delay
(IEEE, 2005)The paper describes and light propagation modes in coherently coupled spherical microcavities covered with CdTe nanocrystals. We observe a rich new spectrum of resonances due to the lower symmetry of the two coupled ... -
Photonic nanojets in coupled microcavities
(IEEE, 2009)Dielectric transparent microspheres are three-dimensional spherical microcavities which provide high Q-factors and a small mode volume leading to strong optical feedback within the cavity. This paper investigates the optical ... -
Photophysics of a poly(phenylenevinylene) with alternating meta-phenylene and para-phenylene rings
(2000)We have investigated the photophysics of the luminescent polymer poly ~ 1,3-phenylenevinylene- alt -2,5- dioctyloxy-1,4-phenylenevinylene ! by a variety of optical spectroscopies. The incorporation of alternating ... -
Photoresponsivity enhancement in monolayer MoS<inf>2</inf> by rapid O<inf>2</inf>:Ar plasma treatment
(2019)We report up to ten-fold enhancement of the photoresponsivity of monolayer molybdenum disulfide (MoS2) by treatment with O2:Ar (1:3) plasma. We characterize the surface of plasma-exposed MoS2 by TEM, Raman, and PL mapping ... -
Photovoltage from ferroelectric domain walls in BiFeO3
(2020)We calculate the component of the photovoltage in bismuth ferrite that is generated by ferroelectric domain walls, using first-principles methods, in order to compare its magnitude to the experimentally measured photovoltage. ... -
Phyllotactic Description of Hard Sphere Packing in Cylindrical Channels
(2011)We develop a simple analytical theory that relates dense sphere packings in a cylinder to corresponding disk packings on its surface. It applies for ratios R=D/d (where d and D are the diameters of the hard spheres and the ... -
Physical Mechanism for the mechanical reinforcement in nanotube-polymer composite materials
(2005)The significant increase in the Young?s modulus of nanotube-polymer composites is often correlated with the formation of a crystalline layer of polymers surrounding the nanotubes. Although the improved stress transfer ... -
Physical models of infant mortality: implications for defects in biological systems
(2020)Reliability engineering concerned with failure of technical inanimate systems usually uses the vocabulary and notions of human mortality, e.g., infant mortality vs. senescence mortality. Yet, few data are available to ... -
Physics in a small bedroom
(Springer, 2022)