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This page shows you the most recent publications within this specialty of the MedWorm directory. This is page number 18.

Femtosecond-laser-induced highly birefringent Bragg gratings in standard optical fiber
We report highly birefringent fiber Bragg gratings in standard single-mode optical fiber realized with UV femtosecond pulses and line-by-line inscription. By controlling the three-dimensional positioning of the focused laser beam with respect to the fiber core, we achieve very high birefringence at ...
Source: Optics Letters - February 14, 2013 Category: Physics Authors: Karima ChahDamien KinetMarc WuilpartPatrice MégretChristophe Caucheteur Source Type: research

Demonstration of nondegenerate spectrum reversal in optical-frequency regime
This Letter reports theoretical and experimental studies of spectrum reversal with tunable wavelength offset in the optical-frequency regime—two widely separated spectral sidebands can always behave as mirror images of one another with respect to the center frequency of the controlling pump ...
Source: Optics Letters - February 14, 2013 Category: Physics Authors: Chenji GuBoaz IlanJay E. Sharping Source Type: research

Sidelobe-modulated optical vortices for free-space communication
We propose and experimentally demonstrate a new method for free-space optical (FSO) communication, where the transmitter encodes data into a composite computer-generated hologram and the receiver decodes through a retrieved array of sidelobe-modulated optical vortices (SMOVs). By employing the SMOV ...
Source: Optics Letters - February 14, 2013 Category: Physics Authors: P. JiaY. YangC. J. MinH. FangX.-C. Yuan Source Type: research

Rotating point spread function via pupil-phase engineering
A simple approach based on the use of a properly designed pupil-phase profile can yield a 3D point-spread function (PSF) that rotates with changing defocus, while keeping its transverse shape approximately invariant over ±3–4 waves of defocus. Unlike Gauss–Laguerre mode-based ...
Source: Optics Letters - February 14, 2013 Category: Physics Authors: Sudhakar Prasad Source Type: research

Erbium-doped multi-element fiber amplifiers for space-division multiplexing operations
Erbium-doped multi-element fiber (MEF) amplifiers have been fabricated to simultaneously amplify multiple transmission channels. MEF devices comprise of multiple single-core fibers (elements) combined in a common coating, with each element working as a single fiber in isolation. MEFs containing ...
Source: Optics Letters - February 14, 2013 Category: Physics Authors: S. JainT. C. May-SmithA. DharA. S. WebbM. BelalD. J. RichardsonJ. K. SahuD. N. Payne Source Type: research

High-speed microwave photonic switch for millimeter-wave ultra-wideband signal generation
We propose a scheme for generating millimeter-wave (MMW) ultra-wideband (UWB) signal that is free from low-frequency components and a residual local oscillator. The system consists of two cascaded polarization modulators and is equivalent to a high-speed microwave photonic switch, which truncates a ...
Source: Optics Letters - February 14, 2013 Category: Physics Authors: Li Xian WangWei LiJian Yu ZhengHui WangJian Guo LiuNing Hua Zhu Source Type: research

Nanosecond nonlinear Čerenkov conical beams generation by intracavity sum frequency mixing in KTiOAsO_4 crystal
Nanosecond Čerenkov-type conical beam at 628 nm is obtained by intracavity sum frequency mixing (SFM) of 1064 and 1534 nm in KTiOAsO_4 (KTA) crystal. The 1534 nm signal generated by the KTA optical parametric oscillation (OPO), respectively, interacts with the orthogonally ...
Source: Optics Letters - February 14, 2013 Category: Physics Authors: Haitao HuangDeyuan ShenJingliang HeHao ChenYong Wang Source Type: research

Heralded generation of symmetric and asymmetric entangled qudits with weak cross-Kerr nonlinearity
High-dimensional entangled states have attracted attention because of their strong nonlocality and powerful capability for quantum information processing. By the methods presented in this paper, arbitrary forms-entangled qudits including symmetric and asymmetric forms could be generated with weak ...
Source: Journal of the Optical Society of America B - February 14, 2013 Category: Physics Authors: Qing Lin Source Type: research

Detection of second-order nonlinear optical magnetization by mapping normalized Stokes parameters
A measurable magnetic (nonlocal) contribution to the second harmonic generation (SHG) of nonmagnetic materials is an intriguing issue related to chiral materials, such as biomolecules. Here we report the detection of an intensity-dependent optically induced magnetization of a chiral ...
Source: Journal of the Optical Society of America B - February 14, 2013 Category: Physics Authors: Fabio Antonio BovinoMaria Cristina LarcipreteConcita SibiliaGregory LeahuGyörgy VáróCsilla Gergely Source Type: research

Electro-optic effect in BaTiO_3 for spectral tuning of narrowband resonances
We study the electro-optic (E-O) properties of a BaTiO_3 thin layer placed in a stack of dielectric layers, including a subwavelength diffraction grating with a two-dimensional periodicity, aiming to tune spectrally the position of the resonant reflection peak that is used for narrowband optical ...
Source: Journal of the Optical Society of America B - February 14, 2013 Category: Physics Authors: Da ShuEvgeny PopovAnne-Laure Fehrembach Source Type: research

Love in the Time of Neuroscience
"How on earth are you ever going to explain in terms of chemistry and physics so important a biological phenomenon as first love?"
Source: Forbes.com Healthcare News - February 13, 2013 Category: Pharmaceuticals Authors: David DiSalvo Source Type: news

Manager says safety issues are ignored at Hanford nuclear site
Donna Busche, a nuclear engineer and health physicist, files a suit alleging that executives tried to dissuade her from raising warnings about serious problems with the waste site's design.The long-troubled project to clean up radioactive waste in Hanford, Wash., has come under attack from another senior manager, the third to assert that top executives are ignoring serious problems in the plant's design.
Source: Los Angeles Times - Science - February 13, 2013 Category: Science Source Type: news

Violent Asteroid Impacts Shaped Protoplanet Vesta s Odd Interior
Astronomers have recreated two cataclysmic collisions that sculpted the interior of the giant asteroid Vesta, revealing that the so-called protoplanet may actually have a crust far thicker than expected. [More]
Source: Scientific American - Official RSS Feed - February 13, 2013 Category: Science Tags: Space,History of Science,Math,Physics,Cosmology,Technology,More Science,Astrophysics,Space Exploration,Chemistry,Space Source Type: research

State of the Union: R&D Funding, Climate Change, STEM Education, Immigration Reform
Source: Science Policy News - FYI - The American Institute of Physics - February 13, 2013 Category: Physics Source Type: news

Prince's charity lobbied government to water down homeopathy criticism
This report is really quite contentious and we may well be subject to quite a lot of challenge from the homeopathic community if published."A further intervention by the DH also removed the statement that "a 2010 science and technology committee report said that scientific tests had shown that homeopathic treatments don't work."Mattin says officials were more worried about potential political fallout from homeopathy supporters than about publishing evidence-based information. He says his draft was delayed and then suppressed."My strong impression was of DH civil servants who lacked the courage and, frankly, the energy to s...
Source: Guardian Unlimited Science - February 13, 2013 Category: Science Authors: Sarah Boseley Tags: The Guardian Homeopathy News Health Medical research & wellbeing Society Science and scepticism UK news Life and style NHS Alternative medicine Source Type: news

A quantum cascade laser absorption spectrometer devoted to the in situ measurement of atmospheric NO and CH emission fluxes
I. Mappe, L. Joly, G. Durry, X. Thomas, T. Decarpenterie et al. This paper describes a Quantum Cascade Laser Absorption Spectrometer, called QCLAS that was developed to monitor in situ greenhouse gases like NO and CH, at high temporal resolution and with a high accuracy. The design of the laser sensor is reported as well as its performances in terms of precision ... [Rev. Sci. Instrum. 84, 023103 (2013)] published Tue Feb 12, 2013.
Source: Review of Scientific Instruments - February 13, 2013 Category: Physics Source Type: research

Diagonal control design for atomic force microscope piezoelectric tube nanopositioners
B. Bhikkaji, Y. K. Yong, I. A. Mahmood, and S. O. R. Moheimani Atomic Force Microscopes (AFM) are used for generating surface topography of samples at micro to atomic resolutions. Many commercial AFMs use piezoelectric tube nanopositioners for scanning. Scanning rates of these microscopes are hampered by the presence of low frequency resonant modes. When inadve ... [Rev. Sci. Instrum. 84, 023705 (2013)] published Tue Feb 12, 2013.
Source: Review of Scientific Instruments - February 13, 2013 Category: Physics Source Type: research

Scanning droplet cell for high throughput electrochemical and photoelectrochemical measurements
John M. Gregoire, Chengxiang Xiang, Xiaonao Liu, Martin Marcin, and Jian Jin High throughput electrochemical techniques are widely applied in material discovery and optimization. For many applications, the most desirable electrochemical characterization requires a three-electrode cell under potentiostat control. In high throughput screening, a material library is explored by ... [Rev. Sci. Instrum. 84, 024102 (2013)] published Tue Feb 12, 2013.
Source: Review of Scientific Instruments - February 13, 2013 Category: Physics Source Type: research

A modular optically powered floating high voltage generator
P. Antonini, E. Borsato, G. Carugno, M. Pegoraro, and P. Zotto The feasibility of fully floating high voltage (HV) generation was demonstrated producing a prototype of a modular HV system. The primary power source is provided by a high efficiency semiconductor power cell illuminated by a laser system ensuring the floating nature of each module. The HV is then g ... [Rev. Sci. Instrum. 84, 024701 (2013)] published Tue Feb 12, 2013.
Source: Review of Scientific Instruments - February 13, 2013 Category: Physics Source Type: research

The optimization of super-high resolution frequency measurement techniques based on phase quantization regularities between any frequencies
Zhiqi Li (李智奇), Wei Zhou (周渭), Hui Zhou (周晖), Xueping Zhang (张雪萍), and Jie Zhao (赵桀) Step phase quantization regularity between different nominal frequency signals is introduced in this paper. Based on this regularity, an optimized high resolution frequency measurement technique is presented. The key features and issues of phase quantization characteristics and measurements are desc ... [Rev. Sci. Instrum. 84, 025106 (2013)] published Tue Feb 12, 2013.
Source: Review of Scientific Instruments - February 13, 2013 Category: Physics Source Type: research

Multi-fault clustering and diagnosis of gear system mined by spectrum entropy clustering based on higher order cumulants
Renping Shao, Jing Li, Wentao Hu, and Feifei Dong Higher order cumulants (HOC) is a new kind of modern signal analysis of theory and technology. Spectrum entropy clustering (SEC) is a data mining method of statistics, extracting useful characteristics from a mass of nonlinear and non-stationary data. Following a discussion on the characteristics of ... [Rev. Sci. Instrum. 84, 025107 (2013)] published Tue Feb 12, 2013.
Source: Review of Scientific Instruments - February 13, 2013 Category: Physics Source Type: research

The frequency stabilization method of laser feedback interferometer based on external cavity modulation
Zhaoli Zeng, Shulian Zhang, Yidong Tan, Yun Wu, and Yan Li Laser frequency stabilization is one of the foremost factors that influence the accuracy of measurement using a laser feedback interferometer, especially when the system is in the presence of strong optical feedback. In this paper, we use external cavity modulation to demonstrate a simple and effect ... [Rev. Sci. Instrum. 84, 025108 (2013)] published Tue Feb 12, 2013.
Source: Review of Scientific Instruments - February 13, 2013 Category: Physics Source Type: research

Note: A 3-stage stacked Blumlein using ceramic for energy storage
Songsong Wang, Ting Shu, and Hanwu Yang We have developed a novel stacked Blumlein with high compactness by using ceramic for energy storage. The total volume of this stacked Blumlein is only 320 x 100 x 185 mm. By triggering 3 spark gaps simultaneously, the developed stacked Blumlein is capable of producing a rectangular pulse with a ... [Rev. Sci. Instrum. 84, 026104 (2013)] published Tue Feb 12, 2013.
Source: Review of Scientific Instruments - February 13, 2013 Category: Physics Source Type: research

Note: A new design for a low-temperature high-intensity helium beam source
We present a new design for a source which can operate at temperatures as low as 11.8 K, corresponding to a beam energy of 2.5 meV. The new ... [Rev. Sci. Instrum. 84, 026105 (2013)] published Tue Feb 12, 2013.
Source: Review of Scientific Instruments - February 13, 2013 Category: Physics Source Type: research

New Products
Andreas Mandelis Abstract not available. [Rev. Sci. Instrum. 84, 029501 (2013)] published Tue Feb 12, 2013.
Source: Review of Scientific Instruments - February 13, 2013 Category: Physics Source Type: research

Optimization of laser-target interaction for proton acceleration
E. d'Humieres, A. Brantov, V. Yu. Bychenkov, and V. T. Tikhonchuk The aim of this study is to optimize the characteristics, in particular, the maximum energy and the number of high energy protons accelerated by a high intensity laser from different targets by using two- and three-dimensional particle-in-cell simulations. Two principal ways are considered to increa ... [Phys. Plasmas 20, 023103 (2013)] published Tue Feb 12, 2013.
Source: Physics of Plasmas - February 13, 2013 Category: Physics Source Type: research

Characteristics of thermal conductivity in classical water models
Timothy W. Sirk, Stan Moore, and Eugene F. Brown The thermal conductivities of common water models are compared using equilibrium (EMD) and non-equilibrium molecular dynamics (NEMD) simulation. A complete accounting for electrostatic contributions to the heat flux was found to resolve the previously reported differing results of NEMD and EMD Green ... [J. Chem. Phys. 138, 064505 (2013)] published Tue Feb 12, 2013.
Source: Journal of Chemical Physics - February 13, 2013 Category: Physics Source Type: research

Temperature and length scale dependence of solvophobic solvation in a single-site water-like liquid
John R. Dowdle, Sergey V. Buldyrev, H. Eugene Stanley, Pablo G. Debenedetti, and Peter J. Rossky The temperature and length scale dependence of solvation properties of spherical hard solvophobic solutes is investigated in the Jagla liquid, a simple liquid that consists of particles interacting via a spherically symmetric potential combining a hard core repulsion and a longer ranged soft core in ... [J. Chem. Phys. 138, 064506 (2013)] published Tue Feb 12, 2013.
Source: Journal of Chemical Physics - February 13, 2013 Category: Physics Source Type: research

Short range order in bimetallic nanoalloys: An extended X-ray absorption fine structure study
Anatoly I. Frenkel, Qi Wang, Sergio I. Sanchez, Matthew W. Small, and Ralph G. Nuzzo Partial coordination numbers measured by extended X-ray absorption fine structure (EXAFS) spectroscopy have been used for decades to resolve between different compositional motifs in bulk and nanoscale bimetallic alloys. Due to the ensemble-averaging nature of EXAFS, the values of the coordination n ... [J. Chem. Phys. 138, 064202 (2013)] published Tue Feb 12, 2013.
Source: Journal of Chemical Physics - February 13, 2013 Category: Physics Source Type: research

Nanomechanical properties of lipid bilayer: Asymmetric modulation of lateral pressure and surface tension due to protein insertion in one leaflet of a bilayer
Negin Maftouni, Mehriar Amininasab, Mohammad Reza Ejtehadi, Farshad Kowsari, and Reza Dastvan The lipid membranes of living cells form an integral part of biological systems, and the mechanical properties of these membranes play an important role in biophysical investigations. One interesting problem to be evaluated is the effect of protein insertion in one leaflet of a bilayer on the physic ... [J. Chem. Phys. 138, 065101 (2013)] published Tue Feb 12, 2013.
Source: Journal of Chemical Physics - February 13, 2013 Category: Physics Source Type: research

A note on weakly discontinuous dynamical transitions
Silvio Franz, Giorgio Parisi, Federico Ricci-Tersenghi, Tommaso Rizzo, and Pierfrancesco Urbani We analyze mode coupling discontinuous transition in the limit of vanishing discontinuity, approaching the so called A point. In these conditions structural relaxation and fluctuations appear to have universal form independent from the details of the system. The analysis of this limiting case sugges ... [J. Chem. Phys. 138, 064504 (2013)] published Tue Feb 12, 2013.
Source: Journal of Chemical Physics - February 13, 2013 Category: Physics Source Type: research

Communication: Simulated tempering with fast on-the-fly weight determination
Phuong H. Nguyen, Yuko Okamoto, and Philippe Derreumaux We propose an efficient method to enhance sampling in computer simulations by combining the simulated tempering algorithm with a fast on-the-fly weight determination scheme. The weights are self-updated via a trapezoid rule during the simulated tempering simulation. With our proposed scheme, simulat ... [J. Chem. Phys. 138, 061102 (2013)] published Tue Feb 12, 2013.
Source: Journal of Chemical Physics - February 13, 2013 Category: Physics Source Type: research

Communication: Van der Waals corrections for an improved structural description of telluride based materials
M. Micoulaut Density functional theory (DFT), using the generalized gradient approximation, fails to reproduce the structure of liquid tellurides, which manifests by an overestimation of the interatomic bond distances. Here, we take into account dispersion forces in a semi-empirical way and apply such DFT simula ... [J. Chem. Phys. 138, 061103 (2013)] published Tue Feb 12, 2013.
Source: Journal of Chemical Physics - February 13, 2013 Category: Physics Source Type: research

Intraband optical transition in InGaAs/GaAs pyramidal quantum dots
We present the results of our numerical analysis of intraband optical transitions within the valence band of InGaAs/GaAs pyramidal quantum dots. We study the possibility of tuning of the corresponding absorption spectra by varying the size and composition of the dots. The composition of the dot is v ... [J. Appl. Phys. 113, 064310 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Rate equation analysis of injection-locked quantum cascade lasers
Cheng Wang, Frederic Grillot, Vassilios Kovanis, and Jacky Even The modulation properties of optical injection-locked quantum cascade lasers (QCLs) are investigated theoretically via a simple low dimensional rate equation model. It is found that both strong injection level and positive optical frequency detuning increase the modulation bandwidth, while a large l ... [J. Appl. Phys. 113, 063104 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Plasma nitriding process by direct current glow discharge at low temperature increasing the thermal diffusivity of AISI 304 stainless steel
L. V. Prandel, A. Somer, A. Assmann, F. Camelotti, G. Costa et al. This work reports for the first time on the use of the open photoacoustic cell technique operating at very low frequencies and at room temperature to experimentally determine the thermal diffusivity parameter of commercial AISI304 stainless steel and AISI304 stainless steel nitrided samples. Complem ... [J. Appl. Phys. 113, 063507 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Joule's law for organic transistors exploration: Case of contact resistance
Yong Xu, Chuan Liu, Yun Li, Takeo Minari, Peter Darmawan et al. Joule's law opens a straightforward way to explore the operating mechanism of organic field-effect transistors, from the angle of inner transported heating. The microscopic dissipated power is calculated from the local conductivity and electric field, which solves the widespread difficulties in buil ... [J. Appl. Phys. 113, 064507 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Erosion evolution in mono-crystalline silicon surfaces caused by acoustic cavitation bubbles
David Fernandez Rivas, Joris Betjes, Bram Verhaagen, Wilco Bouwhuis, Ton C. Bor et al. The early stages (
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Theory of nanoparticles doped in ferroelectric liquid crystals
T. Lahiri, T. Pal Majumder, and N. K. Ghosh We developed a theory for the statistical mechanics of nanoparticles doped in ferroelectric liquid crystals (FLC). The presence of nanoparticles in FLC medium creates strong local fields that produce large alignment effects over the distribution of the nanosuspensions. Considering these local field ... [J. Appl. Phys. 113, 064308 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Conductivity enhancement and resistance changes in polymer films filled with reduced graphene oxide
O. Okhay, R. Krishna, M. Salimian, E. Titus, J. Gracio et al. The electrical properties of polymer composites based on polycarbonate (PC) and panipol CXM (CX), filled with reduced graphene oxide (rGO), were investigated. The composite preparation conditions allowed good dispersion of rGO in the polymer matrix. We show here that when used as a nanofiller in pol ... [J. Appl. Phys. 113, 064307 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Correlation between structural parameters and the magnetocaloric effect in epitaxial LaCaMnO/LaAlO thin film
J. C. Debnath, J. H. Kim, Y. Heo, A. M. Strydom, and S. X. Dou An epitaxial LaCaMnO/LaAlO (LCMO/LAO) thin film was fabricated using the pulsed laser deposition technique to evaluate the correlation between the crystal structure and the magnetocaloric effect. In our study, the LCMO film was 200 nm in thickness and appeared to have a strong out-of plane texture. ... [J. Appl. Phys. 113, 063508 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Tunneling spectroscopy of chiral states in ultra-thin topological insulators
Gen Yin, Darshana Wickramaratne, and Roger K. Lake The temperature, Fermi-level, and bias dependencies of the inter-surface tunneling current in thin-film topological insulators show unique, identifying signatures of the surface states and their opposite chiralities. The opposite chiralities of the surface states limit the tunneling to the band edge ... [J. Appl. Phys. 113, 063707 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Extraordinary magnetoresistance in two and three dimensions: Geometrical optimization
Lisa M. Pugsley, L. R. Ram-Mohan, and S. A. Solin The extraordinary magnetoresistance (EMR) in metal-semiconductor hybrid structures was first demonstrated using a van der Pauw configuration for a circular semiconductor wafer with a concentric metallic inclusion in it. This effect depends on the orbital motion of carriers in an external magnetic fi ... [J. Appl. Phys. 113, 064505 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Improved chemical and electrical stability of gold silicon contacts via epitaxial electrodeposition
Azadeh Akhtari-Zavareh, Wenjie Li, Fouad Maroun, Philippe Allongue, and Karen L. Kavanagh The ballistic transport and junction stability of epitaxial Au, grown on Si (111) and (001) substrates via electrodeposition, have been investigated as a function of Au thickness (6.714.1 nm). Scanning tunneling microscopy (STM) with ballistic emission electron microscopy (BEEM) showed hot electron ... [J. Appl. Phys. 113, 063708 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Multiscale model for phonon-assisted band-to-band tunneling in semiconductors
We present a TCAD (Technology Computer Aided Design) compatible multiscale model of phonon-assisted band-to-band tunneling in semiconductors, which incorporates the non-parabolic nature of complex bands within the bandgap of the material. This model is shown capture the measured current-voltage data ... [J. Appl. Phys. 113, 064506 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Material selection considerations for coaxial, ferrimagnetic-based nonlinear transmission lines
This article focuses specifically on ferrimagnetic-based NLTLs in a coaxial geometry. Achieved peak powers exceed 30 MW at 30 kV incident voltage with rf power reaching 4.8 MW ... [J. Appl. Phys. 113, 064904 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Oxygen stoichiometry and magnetic properties of LuFeO
We report a comprehensive investigation of the magnetic properties of LuFeO (LFO) samples with different oxygen stoichiometries. Samples with excess oxygen exhibit spin glass behavior without long-range magnetic order, while three-dimensional ferrimagnetic order exists in a stoichiometric sample. Di ... [J. Appl. Phys. 113, 063909 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

A comparative study of two molecular mechanics models based on harmonic potentials
Junhua Zhao, Lifeng Wang, Jin-Wu Jiang, Zhengzhong Wang, Wanlin Guo et al. We show that the two molecular mechanics models, the stick-spiral and the beam models, predict considerably different mechanical properties of materials based on energy equivalence. The difference between the two models is independent of the materials since all parameters of the beam model are obtai ... [J. Appl. Phys. 113, 063509 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Effect of excess Mg and nano-additives on the superconducting properties of weakly connected bulk MgB
P. P. S. Bhadauria, Anurag Gupta, Hari Kishan, and A. V. Narlikar Series of ex-situ polycrystalline MgB bulk samples, by adding different additives like more of excess Mg (5 wt. %), nanoparticles of Ag (3 wt. %), and SiC (10 wt. %) to a previously optimized composition MgB + Mg (5 wt. %), were prepared by solid state synthesis route. Detailed investigations were c ... [J. Appl. Phys. 113, 063908 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research

Viscoplastic analysis of cyclic indentation behavior of thin metallic films
C. B. Blada and Y.-L. Shen The indentation behavior of metallic thin film is studied numerically, with attention devoted to cyclic response under a fixed load amplitude. The finite element model consists of an aluminum (Al) film above a silicon (Si) substrate, subject to indentation by a diamond indenter. The rate-dependent v ... [J. Appl. Phys. 113, 063510 (2013)] published Tue Feb 12, 2013.
Source: Journal of Applied Physics - February 13, 2013 Category: Physics Source Type: research