Physics This is an OPML file. It can be used to export all the MedWorm RSS feeds on this topic into your personal RSS reader (usually you have to save this file to your own computer before clicking on an Import OPML command in your own feed reader to upload the file which will then import all the feeds) or it can be used by webmasters to integrate MedWorm feeds with their own website. This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader, such as GoogleReader, or to display this data on your own website or blog. Subscribe to this data using MyMedWorm.Subscribe to this data using GoogleReader.Subscribe to this data using Bloglines.Subscribe to this data using MyYahoo.

This page shows you the most recent publications within this specialty of the MedWorm directory. This is page number 26.

Biexciton energies in concentric double quantum rings
Ning Wang, De Liu, and Xiaojun Kong The energies of biexciton confined in one-dimensional concentric double quantum rings are studied using an exact diagonalization approach. An external magnetic field perpendicular to the ring plane is also included. The energies of L = 0 and L[not-equal]0 states of the concentric double quantum ring ... [J. Appl. Phys. 113, 053714 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Energy harvesting in core-shell ferroelectric ceramics: Theoretical approach and practical conclusions
M. Anoufa, J. M. Kiat, I. Kornev, and C. Bogicevic We have made a quantitative evaluation of the possibility to store electrical energy using ferroelectric supercapacitor built on core-shell nanoceramics. We have first solved the Laplace equation for a single core-shell particle and used afterward an effective medium approximation to get in a self c ... [J. Appl. Phys. 113, 054104 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Lattice and grain-boundary diffusions of boron atoms in BaSi epitaxial films on Si(111)
K. Nakamura, M. Baba, M. Ajmal Khan, W. Du, M. Sasase et al. A 180-nm-thick boron (B) layer was deposited on a 300-nm-thick a-axis-oriented BaSi epitaxial film grown by molecular beam epitaxy on Si(111) and was annealed at different temperatures in ultrahigh vacuum. The depth profiles of B were investigated using secondary ion mass spectrometry (SIMS) with O, ... [J. Appl. Phys. 113, 053511 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Origin of ferromagnetism in Cu-doped SnO: A first-principles study
Kai-Cheng Zhang, Yong Liu, Yong-Feng Li, and Yan Zhu We investigate the magnetic properties of Cu-doped SnO, which was reported recently in experiments to possess ferromagnetism at room temperature, by first-principles calculations. Our results show that the doped system prefers the antiferromagnetic state for only Cu substitution. The oxygen vacancie ... [J. Appl. Phys. 113, 053713 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Very large magnetoresistance and spin state transition in Ba-doped cobaltites
I. O. Troyanchuk, M. V. Bushinsky, A. V. Nikitin, L. S. Lobanovsky, A. M. Balagurov et al. Structural, magnetization, and magnetotransport measurements have been performed for anion deficient LaBaCoFeO (x
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Role of the anode material in the unipolar switching of TiN\NiO\Ni cells
L. Goux, R. Degraeve, J. Meersschaut, B. Govoreanu, D. J. Wouters et al. In this paper, we investigate the unipolar resistive-switching mechanism in TiN\NiO\Ni cells, whereby the NiO layer is deposited by metal-organic chemical vapor deposition. Irrespective of the cell size down to 80 nm, controlled unipolar switching is observed only on condition the Ni electrode is us ... [J. Appl. Phys. 113, 054505 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Complex magnetic phase separation induced by Li-doping in multiferroic CaBaCoO
Md. Motin Seikh, Tapati Sarkar, V. Pralong, V. Caignaert, and B. Raveau The doping of lithium at the cobalt sites in the multiferroic orthorhombic cobaltite CaBaCoO has been investigated. The oxides CaBaCoLiGaO and CaBaCoLiO keep the same polar space group as the parent phase. In contrast, they show a spectacular decrease of their ferrimagnetic properties for very low d ... [J. Appl. Phys. 113, 053910 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Non-reciprocity of dipole-exchange spin waves in thin ferromagnetic films
M. Kostylev The non-reciprocity and asymmetry of the modal profiles for dipole-exchange spin waves have been investigated theoretically. We were interested in the most important case for applications: the waves propagating in in-plane magnetized ferromagnetic films at a right angle to the applied magnetic field ... [J. Appl. Phys. 113, 053907 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Investigation on interfacial thermal resistance and phonon scattering at twist boundary of silicon
Sheng-Hong Ju and Xin-Gang Liang Grain interfaces in nanocrystalline materials play a critical role in thermal transport. A series of twist boundary thermal resistances in silicon is investigated by the nonequilibrium molecular dynamics simulation so as to find the relationship between the boundary resistance, the twist angle, the ... [J. Appl. Phys. 113, 053513 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

High-pressure Raman scattering of CdO thin films grown by metal-organic vapor phase epitaxy
R. Oliva, J. Ibanez, L. Artus, R. Cusco, J. Zuniga-Perez et al. We have performed Raman-scattering measurements under high hydrostatic pressure on CdO thin films grown by metal-organic vapor phase epitaxy on sapphire substrates. The pressure dependence of the second-order Raman bands is discussed in terms of ab initio lattice-dynamical calculations, which allow ... [J. Appl. Phys. 113, 053514 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Diffusion of degenerate minority carriers in a p-type semiconductor
We report ultrafast transient-grating experiments on heavily p-type InP at 15 K. Our measurement reveals the dynamics and diffusion of photoexcited electrons and holes as a function of their density n in the range 2 x 10 to 6 x 10 cm. After the first few picoseconds, the grating decays prima ... [J. Appl. Phys. 113, 053711 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Diffusion barrier properties of molybdenum back contacts for Cu(In,Ga)Se solar cells on stainless steel foils
P. Blosch, F. Pianezzi, A. Chirila, P. Rossbach, S. Nishiwaki et al. Flexible Cu(In,Ga)Se (CIGS) solar cells on stainless steel foils face the problem of efficiency deterioration when iron impurities diffuse into the absorber layer. The influence of the magnetron sputtering conditions and the design of Mo-based back contacts on the property of the diffusion barrier a ... [J. Appl. Phys. 113, 054506 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Ecological optimization for generalized irreversible macro/nano thermosize engine
Hao Wang and Guoxing Wu An irreversible macro/nano thermosize engine cycle model is established, in which the influence of the thermal resistances, heat leakage and the time of the regenerative processes are taken into account. Expressions for several important performance parameters, such as the power output (P), the effi ... [J. Appl. Phys. 113, 054309 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Insertion of lithium ions into TiO (rutile) crystals: An electron paramagnetic resonance study of the Li-associated Ti small polaron
A. T. Brant, N. C. Giles, and L. E. Halliburton Electron paramagnetic resonance (EPR) and electron-nuclear double resonance (ENDOR) are used to identify a Ti-Li complex in TiO crystals having the rutile structure. This defect consists of an interstitial Li ion adjacent to a substitutional Ti ion (the unpaired electron on the Ti ion provides charg ... [J. Appl. Phys. 113, 053712 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

A study of pressure-shear vertical wave propagation in periodically layered fluid and piezoelectric structure
J. Zhao, Y. Pan, and Z. Zhong In this paper, the pressure (P) and shear vertical (SV) wave propagation in the periodically layered fluid and piezoelectric structure are theoretically studied. A single piezoelectric layer is first analyzed for three scenarios: piezoelectricity-ignored, electrically open, or electrically closed. I ... [J. Appl. Phys. 113, 054903 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Band gaps of graphene on layered ZnO substrate: A first principles study
X. Guo and Y. G. Zhou Using density functional theory, we show that the band gap of graphene can be induced via deposition on a layered ZnO substrate. This phenomenon can be understood based on the symmetry-breaking substrate potential, which leads to the nonequivalence of sublattices in graphene. With the decrease of in ... [J. Appl. Phys. 113, 054307 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Influence of the embedding matrix on optical properties of Ge nanocrystals-based nanocomposite
S. Parola, E. Quesnel, V. Muffato, J. Bartringer, and A. Slaoui Germanium nanocrystals were prepared by a nanocluster source and characterized by photoluminescence and spectroscopic photometry methods. The optical measurements were carried out in order to estimate the effective bandgap of the Ge nanocrystals. Both Mie theory and the quantum confinement theory we ... [J. Appl. Phys. 113, 053512 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Controlling wave function localization in a multiple quantum well structure
Anjana Bagga and Anu Venugopalan The dynamics of a wave function describing a particle confined in a multiple quantum well potential is studied numerically. In particular, the case of four wells and six wells has been studied for the first time. As a consequence of quantum mechanical tunneling, an initial wavefunction designed to b ... [J. Appl. Phys. 113, 054310 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Waveguide-based ferromagnetic resonance measurements of metallic ferromagnetic films in transmission and reflection
M. Kostylev In this work, we have studied the ferromagnetic and standing spin wave resonance response of in-plane magnetized exchange-coupled bi-layer ferromagnetic metallic films placed in a section of a rectangular waveguide. The measurements have been performed in transmission and reflection of electromagnet ... [J. Appl. Phys. 113, 053908 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Stripe-vortex transitions in ultrathin magnetic nanostructures
J. P. Chen, Z. Q. Wang, J. J. Gong, M. H. Qin, M. Zeng et al. In this work, the magnetic states in ultrathin nanostructures are investigated using Monte Carlo simulation, based on a Heisenberg model involving the short-range exchange coupling, long-range dipole-dipole interaction, and perpendicular anisotropy. An intriguing thermally driven magnetic structural ... [J. Appl. Phys. 113, 054312 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Fabrication of BiTe nanowire arrays and thermal conductivity measurement by 3omega-scanning thermal microscopy
M. Munoz Rojo, S. Grauby, J.-M. Rampnoux, O. Caballero-Calero, M. Martin-Gonzalez et al. BiTe is well-known for its utility in thermoelectrical applications and more recently as topological insulator. Its nanostructuration has attracted plenty of attention because of its potential capacity to reduce thermal conductivity. Here, we have grown a composite sample made of a BiTe nanowires (N ... [J. Appl. Phys. 113, 054308 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Electrical transport properties of boron-doped single-walled carbon nanotubes
Y. F. Li, Y. Wang, S. M. Chen, H. F. Wang, T. Kaneko et al. The transport properties of B-doped single-walled carbon nanotubes (SWNTs) are studied from both experimental and theoretical standpoints. Experimentally, it is found that the semiconducting behavior of SWNTs is drastically changed after B-doping, and the unusual abrupt current drops are observed at ... [J. Appl. Phys. 113, 054313 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Strain engineering in epitaxial LaSrMnO thin films
Mehran Vafaee, Mehrdad Baghaie Yazdi, Aldin Radetinac, Gennady Cherkashinin, Philipp Komissinskiy et al. We have synthesized epitaxial thin films of LaSrMnO with x = 0.0 and x = 0.5 by pulsed laser deposition on NdGaO and LaSrAlO substrates with different lattice mismatch. X-ray analysis shows that these layered doped manganites can be grown fully strained allowing to tune the lattice degrees of freedo ... [J. Appl. Phys. 113, 053906 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Controlled route to the fabrication of carbon and boron nitride nanoscrolls: A molecular dynamics investigation
Eric Perim, Ricardo Paupitz, and Douglas S. Galvao Carbon nanoscrolls (graphene layers rolled up into papyrus-like tubular structures) are nanostructures with unique and interesting characteristics that could be exploited to build several new nanodevices. However, an efficient and controlled synthesis of these structures was not achieved yet, making ... [J. Appl. Phys. 113, 054306 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Direct observation of enhanced emission sites in nitrogen implanted hybrid structured ultrananocrystalline diamond films
Kalpataru Panda, Huang-Chin Chen, B. Sundaravel, B. K. Panigrahi, and I.-Nan Lin A hybrid-structured ultrananocrystalline diamond (h-UNCD) film, synthesized on Si-substrates by a two-step microwave plasma enhanced chemical vapour deposition (MPECVD) process, contains duplex structure with large diamond aggregates evenly dispersed in a matrix of ultra-small grains (~5 nm). The tw ... [J. Appl. Phys. 113, 054311 (2013)] published Wed Feb 6, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Stripe order related in-plane fourfold symmetric superconductivity in LaNdSrCuO single crystal
M. L. Teng, Y. W. Yin, L. Xie, and X. G. Li The in-plane fourfold symmetry of the upper critical field H in a stripe-ordered LaNdSrCuO single crystal has been observed through measuring the out-of-plane resistivity rho by rotating the crystal around its c-axis in magnetic fields parallel to the ab-plane of the crystal. It was found that the u ... [J. Appl. Phys. 113, 053912 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Thermochemical nonequilibrium modeling of a low-power argon arcjet wind tunnel
Hiroshi Katsurayama and Takashi Abe Non-transferred low-power arcjet wind tunnels with pure argon working gas are widely used as inexpensive laboratory plasma sources to simulate a weakly ionized supersonic flow around an atmospheric entry vehicle. Many experiments using argon arcjet wind tunnels have been conducted, but their numeric ... [J. Appl. Phys. 113, 053304 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

High pressure and high temperature stabilization of cubic AlN in TiAlN
N. Norrby, H. Lind, G. Parakhonskiy, M. P. Johansson, F. Tasnadi et al. In the present work, the decomposition of unstable arc evaporated TiAlN at elevated temperatures and quasihydrostatic pressures has been studied both experimentally and by first-principles calculations. High pressure and high temperature (HPHT) treatment of the samples was realized using the multi a ... [J. Appl. Phys. 113, 053515 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Structural, electronic, magnetic and spin dependent transport properties of Fe/CaS/Fe (001) heterostructures
P. Vlaic, E. Burzo, and K. Carva Structural, electronic, and magnetic properties of Fe/CaS (001) interfaces and Fe/CaS/Fe (001) heterostructures have been studied by means of a self-consistent Green's function technique for surface and interfaces implemented within the tight-binding linear muffin-tin orbital formalism. Spin depende ... [J. Appl. Phys. 113, 053715 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Coercivity dynamics and origin of time-delayed magneto-optical hysteresis loops in pump-probe Kerr spectroscopy
Shufa Li, Zhifeng Chen, Chuyuan Cheng, Jiaming Li, Shiming Zhou et al. Time-resolved magneto-optical Kerr effect (TR-MOKE) is used to measure hysteresis loops of a magnetic film at a different delayed time after femtosecond laser excitations. Coercivity dynamics of the magnetic film is obtained from TR-MOKE loops as usual. However, we point out that the dynamics of coe ... [J. Appl. Phys. 113, 053913 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

High pressure phase transition of ZnO/SiO core/shell nanospheres
Benyuan Cheng, Quanjun Li, Mingguang Yao, Ran Liu, Dongmei Li et al. The structural phase transition of ZnO/SiO core/shell nanospheres was studied under high pressure using synchrotron X-ray diffraction. The results indicated that the wurtzite structure of the ZnO core is stable up to 11.5 GPa, and then transforms into rocksalt phase. The onset transition pressure is ... [J. Appl. Phys. 113, 054314 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Superconductivity at 5 K in NdOFBiS
We report appearance of superconductivity at 5 K in NdOFBiS and supplement the discovery [Demura et al., e-print arXiv:1207.5248] of the same in layered sulfide based compound. Detailed structural analysis showed that the studied compound is crystallized in tetragonal P4/nmm space group with lattice ... [J. Appl. Phys. 113, 056102 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

High birefringence liquid crystalline mixture: Optical properties and order parameter
Molly Dutta Gupta, Anuradha Mukhopadhyay, S. K. Roy, and R. Dabrowski Liquid crystal mixtures with tailored electro-optical behaviour; especially high birefringence (Deltan >= 0.30) is presently being used extensively in display and other devices. Cyano (CN) and isothiocyanato (NCS) are two polar groups commonly employed for this purpose. The present work entails the ... [J. Appl. Phys. 113, 053516 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Cross-sectional sizes and emission wavelengths of regularly patterned GaN and core-shell InGaN/GaN quantum-well nanorod arrays
Che-Hao Liao, Wen-Ming Chang, Yu-Feng Yao, Hao-Tsung Chen, Chia-Ying Su et al. The cross-sectional sizes of the regularly patterned GaN nanorods (NRs) and InGaN/GaN quantum-well (QW) NRs of different heights and different hexagon orientations, which are grown on the patterned templates of different hole diameters, pitches, and crystal orientations, are compared. It is found th ... [J. Appl. Phys. 113, 054315 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Resistive switching near electrode interfaces: Estimations by a current model
Herbert Schroeder, Alexander Zurhelle, Stefanie Stemmer, Astrid Marchewka, and Rainer Waser The growing resistive switching database is accompanied by many detailed mechanisms which often are pure hypotheses. Some of these suggested models can be verified by checking their predictions with the benchmarks of future memory cells. The valence change memory model assumes that the different res ... [J. Appl. Phys. 113, 053716 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Layer-by-layer shuttered molecular-beam epitaxial growth of superconducting SrLaCuO thin films
L. Maritato, A. Galdi, P. Orgiani, J. W. Harter, J. Schubert et al. Superconducting SrLaCuO thin films have been grown on GdScO substrates by reflection high-energy electron diffraction calibrated layer-by-layer molecular-beam epitaxy. X-ray diffraction analysis has confirmed the infinite layer structure after an in situ vacuum annealing step. In situ photoemission ... [J. Appl. Phys. 113, 053911 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

The increase in conductance of a gold single atom chain during elastic elongation
F. Tavazza, S. Barzilai, D. T. Smith, and L. E. Levine The conductance of monoatomic gold wires has been studied using ab initio calculations and the transmission was found to vary with the elastic strain. Counter-intuitively, the conductance was found to increase for the initial stages of the elongation, where the structure has a zigzag shape and the b ... [J. Appl. Phys. 113, 054316 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Scattering and the relationship between quantum efficiency and emittance
Kevin L. Jensen Simple models of the quantum efficiency (QE) and emittance (epsilon) of metals are based on the neglect of scattered electrons to the emission current. The leading order terms in the Fowler-Dubridge equation for QE and the Dowell-Schmerge equation for emittance entail QE[proportional]epsilon. Here, ... [J. Appl. Phys. 113, 056101 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Electrochemical hydrogen property improved in nano-structured perovskite oxide LaFeO for Ni/MH battery
Qiang Wang, Gang Deng, Zhiqian Chen, Yungui Chen, and Nanpu Cheng Perovskite oxide LaFeO, as a novel candidate for the electrode of Ni/MH battery, holds high specific capacity and good cyclical durability at elevated temperatures. However, the poor electrochemical kinetics is a bottleneck for the application of this type of material. By use of nano-structured mate ... [J. Appl. Phys. 113, 053305 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Effect of A-site La, Ba, and Sr doping on the threshold field and characteristic temperatures of PbScNbO relaxor studied by acoustic emission
E. Dul'kin, B. Mihailova, M. Gospodinov, and M. Roth The behavior of the temperature of the dielectric-permittivity maximum T, the intermediate temperature T*, and the Burns temperature T in stoichiometric PbScNbO (PSN) as well as in PSN heavily doped on the A-site by La (PSN-La), Ba (PSN-Ba), and Sr (PSN-Sr) was studied by means of acoustic emission ... [J. Appl. Phys. 113, 054105 (2013)] published Thu Feb 7, 2013.
Source: Journal of Applied Physics - February 7, 2013 Category: Physics Source Type: research

Chaos M-ary modulation and demodulation method based on Hamilton oscillator and its application in communication
Yongqing Fu, Xingyuan Li, Yanan Li, Wei Yang, and Hailiang Song Chaotic communication has aroused general interests in recent years, but its communication effect is not ideal with the restriction of chaos synchronization. In this paper a new chaos M-ary digital modulation and demodulation method is proposed. By using region controllable characteristics of spatio ... [Chaos 23, 013111 (2013)] published Thu Feb 7, 2013.
Source: Chaos - February 7, 2013 Category: Physics Source Type: research

Nucleation pathways on complex networks
Chuansheng Shen, Hanshuang Chen, Miaolin Ye, and Zhonghuai Hou Identifying nucleation pathway is important for understanding the kinetics of first-order phase transitions in natural systems. In the present work, we study nucleation pathway of the Ising model in homogeneous and heterogeneous networks using the forward flux sampling method, and find that the nucl ... [Chaos 23, 013112 (2013)] published Thu Feb 7, 2013.
Source: Chaos - February 7, 2013 Category: Physics Source Type: research

A trilayer architecture for polymer photoconductors
Zhiwen Jin and Jizheng Wang A trilayer architecture is designed for polymer photoconductors. In such a structure, photogenerated electrons in poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid ethyl ester (P3HT:PCBM) blend film will flow into a TiOx layer beneath and then diffuse into a underlying PCBM layer. Photogenerated ... [Appl. Phys. Lett. 102, 053304 (2013)] published Thu Feb 7, 2013.
Source: Applied Physics Letters - February 7, 2013 Category: Physics Source Type: research

Optoelectronic measurement of x-ray synchrotron pulses: A proof of concept demonstration
Stephen M. Durbin, Aamer Mahmood, Marc Caffee, Sergei Savikhin, Eric M. Dufresne et al. Optoelectronic detection using photoconductive coplanar stripline devices has been applied to measuring the time profile of x-ray synchrotron pulses, a proof of concept demonstration that may lead to improved time-resolved x-ray studies. Laser sampling of current vs time delay between 12 keV x-ray a ... [Appl. Phys. Lett. 102, 051109 (2013)] published Thu Feb 7, 2013.
Source: Applied Physics Letters - February 7, 2013 Category: Physics Source Type: research

Observation of rhombohedral nanostructures in the orthorhombic phase of KNbO using convergent-beam electron diffraction
Kenji Tsuda, Rikiya Sano, and Michiyoshi Tanaka Symmetries of nanometer-scale local structures in the rhombohedral and orthorhombic phases of potassium niobate (KNbO) have been examined using convergent-beam electron diffraction. Nanometer-size local structures with rhombohedral symmetry have been discovered in the orthorhombic phase of KNbO. It ... [Appl. Phys. Lett. 102, 051913 (2013)] published Thu Feb 7, 2013.
Source: Applied Physics Letters - February 7, 2013 Category: Physics Source Type: research

Oxidation induced softening in Al nanowires
Fatih G. Sen, Yue Qi, Adri C. T. van Duin, and Ahmet T. Alpas The mechanical properties of metallic nanowires depend dramatically on the atmospheric conditions. Molecular-dynamics simulations with ReaxFF were conducted to study tensile elastic deformation of oxidized Al nanowires. The thin amorphous oxide shell formed around Al nanowires had a very low Young's ... [Appl. Phys. Lett. 102, 051912 (2013)] published Thu Feb 7, 2013.
Source: Applied Physics Letters - February 7, 2013 Category: Physics Source Type: research

Integrated high-quality factor silicon-on-sapphire ring resonators for the mid-infrared
Raji Shankar, Irfan Bulu, and Marko LonCar We demonstrate high-quality (Q) factor grating-coupled ring resonators in a silicon-on-sapphire platform, operating at wavelengths between 4.3 and 4.6 [mu]m. Total Q-factors of 151 000 and intrinsic Q-factors of 278 000 are measured, representing the highest Q-factors measured at the mid-infrared in ... [Appl. Phys. Lett. 102, 051108 (2013)] published Thu Feb 7, 2013.
Source: Applied Physics Letters - February 7, 2013 Category: Physics Source Type: research

Growth of highly near-c-axis oriented ferroelectric LiNbO thin films on Si with a ZnO buffer layer
Peng You, Chaojing Lu, Wanneng Ye, Lanzhong Hao, Jun Zhu et al. Ferroelectric LiNbO thin film of high near-c-axis orientation was grown on Si by pulsed laser deposition using a thin ZnO buffer layer of high c-axis orientation. Both the LiNbO film and the ZnO layer consist of columnar grains with random in-plane twist relative to each other. The c axes of LiNbO g ... [Appl. Phys. Lett. 102, 051914 (2013)] published Thu Feb 7, 2013.
Source: Applied Physics Letters - February 7, 2013 Category: Physics Source Type: research

Active modulation of wavelength and radiation direction of fluorescence via liquid crystal-tuned surface plasmons
Haibo Li, Shuping Xu, Yuejiao Gu, Kai Wang, and Weiqing Xu Plasmonic elements which can tune light in micro-nano dimension have attracted much attention nowadays. However, available approaches for externally manipulating surface plasmons (SPs) are still in great demand. Here, we described an effective approach to modulate SPs by voltage signal. Through addi ... [Appl. Phys. Lett. 102, 051107 (2013)] published Thu Feb 7, 2013.
Source: Applied Physics Letters - February 7, 2013 Category: Physics Source Type: research

Controlling bubble motion over heated surface through evaporation momentum force to enhance pool boiling heat transfer
S. G. Kandlikar Evaporation momentum force arises due to the difference in liquid and vapor densities at an evaporating interface. The resulting rapid interface motion increases the microconvection heat transfer around a nucleating bubble in pool boiling. Microstructure features are developed on the basis of this h ... [Appl. Phys. Lett. 102, 051611 (2013)] published Thu Feb 7, 2013.
Source: Applied Physics Letters - February 7, 2013 Category: Physics Source Type: research