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 38.

Lamb wave band gaps in a double-sided phononic plate
Peng Wang, Tian-Ning Chen, Kun-Peng Yu, and Xiao-Peng Wang In this paper, we report on the theoretical investigation of the propagation characteristics of Lamb wave in a phononic crystal structure constituted by a square array of cylindrical stubs deposited on both sides of a thin homogeneous plate. The dispersion relations, the power transmission spectra, ... [J. Appl. Phys. 113, 053509 (2013)] published Tue Feb 5, 2013.
Source: Journal of Applied Physics - February 5, 2013 Category: Physics Source Type: research

Evaluation of field emission parameters in a copper nano-tip based diode
Abhishek Kumar Singh and Jitendra Kumar Copper nano-tip based diode structure with a gap of ~120 nm has been fabricated by milling of a thin metallic film with a 30 kV focused gallium ion beam at a current of 100 pA. Its current-voltage characteristics measured at a pressure of ~10 mbar is shown to follow the Fowler-Nordheim (F-N) field e ... [J. Appl. Phys. 113, 053303 (2013)] published Tue Feb 5, 2013.
Source: Journal of Applied Physics - February 5, 2013 Category: Physics Source Type: research

Suppression of spatial hole burning and pulse stabilization for actively modelocked quantum cascade lasers using quantum coherent absorption
S. S. Shimu, A. Docherty, M. A. Talukder, and C. R. Menyuk We theoretically study of an actively modelocked quantum cascade laser in which we incorporate quantum coherent absorption by interleaving quantum coherent absorbing periods with gain periods. We show that this absorption suppresses the spatial hole burning that is responsible for pulse instability. ... [J. Appl. Phys. 113, 053106 (2013)] published Tue Feb 5, 2013.
Source: Journal of Applied Physics - February 5, 2013 Category: Physics Source Type: research

Electrical transport in hydrogen-aluminium Co-doped ZnO and ZnMgO films: Relation to film structure and composition
A. Bikowski and K. Ellmer ZnO:Al and ZnMgO:Al films have been deposited in Ar/H atmospheres by magnetron sputtering from oxidic targets at two substrate temperatures: room temperature and 300 degrees C. The electrical transport parameterscarrier concentration, resistivity, and Hall mobilityhave been measured and related to ... [J. Appl. Phys. 113, 053710 (2013)] published Tue Feb 5, 2013.
Source: Journal of Applied Physics - February 5, 2013 Category: Physics Source Type: research

Bulk modulus and structural changes of carbon nitride CN(CH) under pressure: The strength of CN single bond
Masaya Sougawa, Kenichi Takarabe, Yoshihisa Mori, Taku Okada, Takehiko Yagi et al. The experimental bulk modulus, B, of CN(CH) is determined to be 258 3.4 GPa from the analysis of high-pressure (up to 30 GPa) X-ray diffraction patterns obtained using synchrotron radiation. This bulk modulus is 40% lower than that of diamond. At the level of a combined analysis of lattice constant ... [J. Appl. Phys. 113, 053510 (2013)] published Tue Feb 5, 2013.
Source: Journal of Applied Physics - February 5, 2013 Category: Physics Source Type: research

Nitric acid compensated aluminum oxide dielectrics with improved negative bias reliability and positive bias temperature response
Chien-Chih Lin and Jenn-Gwo Hwu The room-temperature nitric acid (HNO) compensation method is introduced to effectively improve the dielectric quality of ultrathin aluminum oxide (AlO) gate dielectrics under low thermal budget consideration. The physical properties, electrical characteristics, and temperature response of AlO metal ... [J. Appl. Phys. 113, 054103 (2013)] published Tue Feb 5, 2013.
Source: Journal of Applied Physics - February 5, 2013 Category: Physics Source Type: research

Carrier dynamics and photoluminescence quenching mechanism of strained InGaSb/AlGaSb quantum wells
Nahid A. Jahan, Claus Hermannstadter, Hirotaka Sasakura, Thomas J. Rotter, Pankaj Ahirwar et al. GaSb based quantum wells (QWs) show promising optical properties in near-infrared spectral range. In this paper, we present photoluminescence (PL) spectroscopies of InGaSb/AlGaSb QWs and discuss the possible thermal quenching and non-radiative carrier recombination mechanisms of the QW structures. T ... [J. Appl. Phys. 113, 053505 (2013)] published Tue Feb 5, 2013.
Source: Journal of Applied Physics - February 5, 2013 Category: Physics Source Type: research

Enhanced acousto-optic interaction in two-dimensional phoxonic crystals with a line defect
This study presents acousto-optic interaction of optical waves in a two-dimensional phoxonic crystal with a line defect. Because of dual photonic and phononic band gaps generated in the phoxonic crystal, optical waves and acoustic modes can be guided and amplified, respectively, along the line defec ... [J. Appl. Phys. 113, 053508 (2013)] published Tue Feb 5, 2013.
Source: Journal of Applied Physics - February 5, 2013 Category: Physics Source Type: research

Structure and multiferroic properties of BiDyFeMgTiO solid solution
Nan Li, Jiangtao Wu, Yaqi Jiang, Zhaoxiong Xie, Lansun Zheng et al. Chemical modification is proven to be an effective way to improve the properties of perovskite BiFeO (BFO). In this paper, we studied the effects of the A-site Dy ion substitution on the structure and multiferroic properties of BFO in which the Fe ion on the B-site is partially co-substituted for by ... [J. Appl. Phys. 113, 054102 (2013)] published Tue Feb 5, 2013.
Source: Journal of Applied Physics - February 5, 2013 Category: Physics Source Type: research

Optimal width of barrier region in X/gamma-ray Schottky diode detectors based on CdTe and CdZnTe
L. A. Kosyachenko, T. Aoki, C. P. Lambropoulos, V. A. Gnatyuk, S. V. Melnychuk et al. The spectral distribution of quantum detection efficiency of X- and gamma-ray Schottky diodes based on semi-insulating CdTe or CdZnTe crystals is substantiated and obtained in analytical form. It is shown that the width of the space charge region (SCR) of 640 [mu]m at zero bias in CdTe (CdZnTe) Scho ... [J. Appl. Phys. 113, 054504 (2013)] published Tue Feb 5, 2013.
Source: Journal of Applied Physics - February 5, 2013 Category: Physics Source Type: research

Femtosecond diffraction dynamics of laser-induced periodic surface structures on fused silica
S. Hohm, A. Rosenfeld, J. Kruger, and J. Bonse The formation of laser-induced periodic surface structures (LIPSS) on fused silica upon irradiation with linearly polarized fs-laser pulses (50 fs pulse duration, 800 nm center wavelength) is studied experimentally using a transillumination femtosecond time-resolved (0.1 ps-1 ns) pump-probe diffract ... [Appl. Phys. Lett. 102, 054102 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Effect of substrate surface roughness on electric current induced flow of liquid metals
Santanu Talukder, Nalla Somaiah, and Praveen Kumar Electric current can induce long-range flow of liquid metals over a conducting substrate. This work reports on the effect of the substrate surface roughness on the liquid metal-front velocity during such a flow. Experiments were conducted by passing electric current through liquid gallium placed ove ... [Appl. Phys. Lett. 102, 054101 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Enhanced performance in polymer solar cells by the use of a halogenated indium tin oxide anode
Shizhao Zheng and King Y. Wong Use of a halogenated, surface-modified indium tin oxide (ITO) anode was found to enhance the photovoltaic performance of a bulk heterojunction (BHJ) polymer solar cell using poly[N-9[prime]-heptadecanyl-2,7-carbazole-alt-5,5-(4[prime],7[prime]-di-2-thienyl-2[prime],1[prime],3[prime]-benzothiadiazole ... [Appl. Phys. Lett. 102, 053302 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Efficient electron injection from solution-processed cesium stearate interlayers in organic light-emitting diodes
G. A. H. Wetzelaer, A. Najafi, R. J. P. Kist, M. Kuik, and P. W. M. Blom The electron-injection capability of solution-processed cesium stearate films in organic light-emitting diodes is investigated. Cesium stearate, which is expected to exhibit good solubility and film formation due to its long hydrocarbon chain, is synthesized using a straightforward procedure. Light- ... [Appl. Phys. Lett. 102, 053301 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Near-field radiative heat transfer between doped silicon nanowire arrays
Soumyadipta Basu and Liping Wang In this letter, we investigate the near-field radiative heat transfer between two doped silicon nanowire arrays separated by a vacuum gap. Using effective medium theory and fluctuational electrodynamics, the radiative heat transfer is calculated for the silicon nanowire arrays with different filling ... [Appl. Phys. Lett. 102, 053101 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Flexible, compressible, hydrophobic, floatable, and conductive carbon nanotube-polymer sponge
Jin-Woo Han, Beomseok Kim, Jing Li, and M. Meyyappan A flexible, compressible, hydrophobic, ice-repelling, floatable, and conductive carbon nanotube (CNT)-polydimethylsiloxane (PDMS) sponge is presented. The microporous sponge-like PDMS scaffold fabricated with a sugar cube template is capable of CNT uptake. The CNT-PDMS sponge (CPS) is deformable and ... [Appl. Phys. Lett. 102, 051903 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Cu out-diffusion in kesteritesA transmission electron microscopy specimen preparation artifact
J. Timo Watjen, Jonathan J. Scragg, Marika Edoff, Stefano Rubino, and Charlotte Platzer-Bjorkman Solar cells based on CuZnSn(S,Se) absorber layers have received a growing amount of interest. Typically a Mo(S,Se) layer is formed at the CuZnSn(S,Se)/Mo interface during processing. Transmission electron microscopy (TEM) analyses showed the presence of Cu in the Mo(S,Se) which was thought to cause ... [Appl. Phys. Lett. 102, 051902 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Direct and quantitative broadband absorptance spectroscopy on small objects using Fourier transform infrared spectrometer and bilayer cantilever probes
Wei-Chun Hsu, Jonathan K. Tong, Bolin Liao, Brian R. Burg, and Gang Chen A measurement platform is introduced that combines a bilayer cantilever probe with a Fourier transform infrared spectrometer to measure absolute spectral absorptance between wavelengths of 3 [mu]m and 18 [mu]m directly and quantitatively. The enhanced sensitivity provided by the cantilever probe ena ... [Appl. Phys. Lett. 102, 051901 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Enhancement of the performance of InAs quantum dots solar cell by surface modification using Poly-L-Lysine homopolymers
Y. F. Makableh, R. Vasan, S. Lee, and O. M. Manasreh The enhancement of InAs quantum dots solar cell was reported for surface modification by implementing Poly-L-Lysine (PLL) homopolymers as an anti-reflection coating. Dip coating method was used to coat the solar cell surface with PLL. The current-voltage, spectral response, and external quantum effi ... [Appl. Phys. Lett. 102, 051904 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Differential scanning calorimetric determination of the thermal properties of amorphous CoFeB and CoFeB thin films
Yuan-Tsung Chen, S. H. Lin, and W. H. Hsieh The thermal stability of CoFeB and CoFeB thin films are investigated by non-isothermal and isothermal thermal analysis. The differential scanning calorimetry results of amorphous CoFeB and CoFeB thin films showed the crucial glass forming ability index, gamma and gamma. The Kissinger formula was app ... [Appl. Phys. Lett. 102, 051905 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

A high-temperature piezoelectric linear actuator operating in two orthogonal first bending modes
Jianguo Chen, Zhijiang Chen, Xiaotian Li, and Shuxiang Dong Conventionally, piezoelectric ultrasonic linear actuators operate in longitudinal and bending combination (degenerate) modes for producing an elliptic motion which drives a slider moving linearly. With the increasing temperature, the degenerate mode will split into two separated modes again, resulti ... [Appl. Phys. Lett. 102, 052902 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Confirmation of the monoclinic Cc space group for the ground state phase of Pb(ZrTi)O: A combined synchrotron X-ray and neutron powder diffraction study
Ravindra Singh Solanki, Sunil Kumar Mishra, Anatoliy Senyshyn, Songhak Yoon, Sunggi Baik et al. The low temperature antiferrodistortive phase transition in a pseudo-tetragonal composition of Pb(ZrTi)O (PZT) with x = 0.525 is investigated through a combined synchrotron x-ray and neutron powder diffraction study. It is shown that the superlattice peaks cannot be correctly accounted for in the Ri ... [Appl. Phys. Lett. 102, 052903 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Mechanic and electromechanic effects in biaxially stretched liquid crystal elastomers
Ricardo Diaz-Calleja, Pedro Llovera-Segovia, Evaristo Riande, and Alfredo Quijano Lopez The effect of combined electromechanic force fields in nematic side chain liquid crystal elastomers will be analyzed. A biaxially stretched plate in the x- and y-directions under an electric field applied in the perpendicular direction to the plate will be considered. A neo-Hookean model is chosen, ... [Appl. Phys. Lett. 102, 052901 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

NbTiN superconducting nanowire detectors for visible and telecom wavelengths single photon counting on Si3N4 photonic circuits
C. Schuck, W. H. P. Pernice, and H. X. Tang We demonstrate niobium titanium nitride superconducting nanowires patterned on stoichiometric silicon nitride waveguides for detecting visible and infrared photons. The use of silicon nitride on insulator on silicon substrates allows us to simultaneously realize photonic circuits for visible and inf ... [Appl. Phys. Lett. 102, 051101 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Role of photo-assisted tunneling in time-dependent second-harmonic generation from Si surfaces with ultrathin oxides
Yong Q. An, J. Price, Ming Lei, and M. C. Downer Optical second-harmonic generation (SHG) from Si surfaces covered with nanometer-thin SiO varies with the laser exposure time because of photo-injection and charge trapping. We use UV lamp excitation to decompose the effects of photo-injection and charge trapping on the time-dependence of SHG of 1.6 ... [Appl. Phys. Lett. 102, 051602 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

The source of the threading dislocation in GaSb/GaAs hetero-structures and their propagation mechanism
Yi Wang, P. Ruterana, S. Kret, S. El Kazzi, L. Desplanque et al. The misfit and threading dislocations during GaSb epitaxy on GaAs substrate were investigated by weak beam dark field and high angle dark field scanning transmission electron microscopy. The geometric phase analysis and dislocation density tensor analysis were next used to analyze the strain around ... [Appl. Phys. Lett. 102, 052102 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Versatile scanning tunneling microscopy with 120 ps time resolution
We describe a fully ultra-high vacuum compatible scanning tunneling microscope (STM) optimized for radio-frequency signals. It includes in-situ exchangeable tips adapted to high frequency cabling and a standard sample holder, which offer access to the whole range of samples typically investigated by ... [Appl. Phys. Lett. 102, 051601 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Identification of the native defect doping mechanism in amorphous indium zinc oxide thin films studied using ultra high pressure oxidation
Sunghwan Lee and David C. Paine The mechanism of native defect doping in amorphous In-Zn-O (a-IZO) has not previously been established but is likely associated with native oxygen defect doping. We have used high pressure oxidation and defect equilibrium analysis to show a 1/6 power dependence of carrier density on oxygen fugacity ... [Appl. Phys. Lett. 102, 052101 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Selective A- or B-site single termination on surfaces of layered oxide SrLaAlO
A. Biswas, P. B. Rossen, J. Ravichandran, Y.-H. Chu, Y.-W. Lee et al. We demonstrate that thermal annealing in cation controlled environments is an effective means to obtain atomically flat and chemically single terminated surfaces of a layer structured substrate. The effectiveness of the cation controlled annealing method is proved with SrLaAlO, which is a representa ... [Appl. Phys. Lett. 102, 051603 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Correlation between Ti source/drain contact and performance of InGaZnO-based thin film transistors
Kwang-Hyuk Choi and Han-Ki Kim Ti contact properties and their electrical contribution to an amorphous InGaZnO (a-IGZO) semiconductor-based thin film transistor (TFT) were investigated in terms of chemical, structural, and electrical considerations. TFT device parameters were quantitatively studied by a transmission line method. ... [Appl. Phys. Lett. 102, 052103 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Phosphorus doping of 4H SiC by liquid immersion excimer laser irradiation
Akihiro Ikeda, Koji Nishi, Hiroshi Ikenoue, and Tanemasa Asano Phosphorus doping of 4H SiC is performed by KrF excimer laser irradiation of 4H SiC immersed in phosphoric acid. Phosphorus is incorporated to a depth of a few tens of nanometers at a concentration of over 10/cm without generating significant crystal defects. Formation of a pn junction diode with an ... [Appl. Phys. Lett. 102, 052104 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Reconfigurable ground states in connected double-dot system
S. Jain, F. Y. Fradin, J. E. Pearson, V. Novosad, and S. D. Bader Controlling the polarity of a vortex core in patterned magnetic arrays of double-dot systems was recently shown via a nonlinear spin dynamics manipulation procedure. In the present work, we utilize the microwave absorption amplitude to monitor this polarity switching transition as the excitation fie ... [Appl. Phys. Lett. 102, 052401 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Introducing a well-ordered volume porosity in 3-dimensional gold microcantilevers
Cedric Ayela, Helene Lalo, and Alexander Kuhn The purpose of the present work is the introduction of a combined bottom-up and top-down approach to generate 3-dimensional gold microcantilevers, where the porosity in the volume of the free-standing microstructure is well-controlled. By combining the elaboration of a colloidal crystal, followed by ... [Appl. Phys. Lett. 102, 053501 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

In-situ observation of nickel oxidation using synchrotron based full-field transmission X-ray microscopy
Andrew M. Kiss, William M. Harris, Steve Wang, Joan Vila-Comamala, Alex Deriy et al. An in situ imaging-based approach is reported to study chemical reactions using full-field transmission x-ray microscopy (TXM). Ni particles were oxidized at temperatures between 400 and 850 degrees C in the TXM to directly observe their morphology change while the chemical composition is monitored ... [Appl. Phys. Lett. 102, 053902 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Enhancing the efficiency of SnS solar cells via band-offset engineering with a zinc oxysulfide buffer layer
Prasert Sinsermsuksakul, Katy Hartman, Sang Bok Kim, Jaeyeong Heo, Leizhi Sun et al. SnS is a promising earth-abundant material for photovoltaic applications. Heterojuction solar cells were made by vapor deposition of p-type tin(II) sulfide, SnS, and n-type zinc oxysulfide, Zn(O,S), using a device structure of soda-lime glass/Mo/SnS/Zn(O,S)/ZnO/ITO. A record efficiency was achieved ... [Appl. Phys. Lett. 102, 053901 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Near-field optical microscopy with an infra-red free electron laser applied to cancer diagnosis
A. D. Smith, M. R. F. Siggel-King, G. M. Holder, A. Cricenti, M. Luce et al. We show that the combination of a scanning near field optical microscope and an infra-red free electron laser yields chemical images with sub-cellular spatial resolution that have the potential to provide a diagnostic for oesophageal adenocarcinoma. ... [Appl. Phys. Lett. 102, 053701 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Nanoscale torsional optomechanics
P. H. Kim, C. Doolin, B. D. Hauer, A. J. R. MacDonald, M. R. Freeman et al. Optomechanical transduction is demonstrated for nanoscale torsional resonators evanescently coupled to optical microdisk whispering gallery mode resonators. The on-chip, integrated devices are measured using a fully fiber-based system, including a tapered and dimpled optical fiber probe. With a ther ... [Appl. Phys. Lett. 102, 053102 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Significantly enhanced thermoelectric properties of ultralong double-walled carbon nanotube bundle
Tingting Miao, Weigang Ma, Xing Zhang, Jinquan Wei, and Jialin Sun A T-type method is developed to comprehensively evaluate the thermoelectric properties of materials. The thermoelectric properties, including thermal conductivity, thermopower, and electrical conductivity of an ultralong double-walled carbon nanotube bundle are studied from 240 K to 340 K by applyin ... [Appl. Phys. Lett. 102, 053105 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Homogeneous and stable p-type doping of graphene by MeV electron beam-stimulated hybridization with ZnO thin films
Wooseok Song, Yooseok Kim, Sung Hwan Kim, Soo Youn Kim, Myoung-Jun Cha et al. In this work, we demonstrate a unique and facile methodology for the homogenous and stable p-type doping of graphene by hybridization with ZnO thin films fabricated by MeV electron beam irradiation (MEBI) under ambient conditions. The formation of the ZnO/graphene hybrid nanostructure was attributed ... [Appl. Phys. Lett. 102, 053103 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Influence of nanoscale geometry on the dynamics of wicking into a rough surface
Chang Quan Lai, Trong Thi Mai, H. Zheng, P. S. Lee, K. C. Leong et al. The dynamics of imbibition into the roughness of a surface was investigated with hexagonal arrays of anisotropic nanofins fabricated with interference lithography and metal assisted chemical etching. It was found that viscous drag caused by the nanofins is similar to that caused by open nano-channel ... [Appl. Phys. Lett. 102, 053104 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Collective charge transport in semiconductor-metal hybrid nanocomposite
Tuhin Shuvra Basu, Siddhartha Ghosh, Stanislaw Gierlotka, and Mallar Ray Collective charge transport through a hybrid nanocomposite made of Ag nanoparticles (NPs) embedded in ultra-small Si quantum dot (QD) matrix exhibits unexpected and fascinating characteristics. Metallic inclusion (10 wt. % of Ag NPs) in the Si QD matrix affects six orders of magnitude increase in cu ... [Appl. Phys. Lett. 102, 053107 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Ultrafast modulation of near-field heat transfer with tunable metamaterials
Longji Cui, Yong Huang, Ju Wang, and Ke-Yong Zhu We propose a mechanism of active near-field heat transfer modulation relying on externally tunable metamaterials. A large modulation effect is observed and can be explained by the coupling of surface modes, which is dramatically varied in the presence of controllable magnetoelectric coupling in meta ... [Appl. Phys. Lett. 102, 053106 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Size-dependence of Raman scattering from graphene quantum dots: Interplay between shape and thickness
Sung Kim, Dong Hee Shin, Chang Oh Kim, Soo Seok Kang, Soong Sin Joo et al. Raman-scattering behaviors have been studied in graphene quantum dots (GQDs) by varying their average size (d) from 5 to 35 nm. The peak frequencies of D and 2D bands are almost irrespective of d, and the intensity of the D band is larger than that of the G band over almost full range of d. These re ... [Appl. Phys. Lett. 102, 053108 (2013)] published Mon Feb 4, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Concise and high-fidelity predictive criteria for maximizing performance and robustness of bistable energy harvesters
R. L. Harne, M. Thota, and K. W. Wang We employ an analytical model of a harmonically excited bistable vibration energy harvester to determine criteria governing continuous high-energy orbit (HEO) dynamics that maximize harvesting performance. Derivation of the criteria stems from previously unexplored dynamic relationships predicted by ... [Appl. Phys. Lett. 102, 053903 (2013)] published Tue Feb 5, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Nanoscale structure of protamine/DNA complexes for gene delivery
Simona Motta, Paola Brocca, Elena Del Favero, Valeria Rondelli, Laura Cantu et al. Understanding the internal packing of gene carriers is a key-factor to realize both gene protection during transport and de-complexation at the delivery site. Here, we investigate the structure of complexes formed by DNA fragments and protamine, applied in gene delivery. We found that complexes are ... [Appl. Phys. Lett. 102, 053703 (2013)] published Tue Feb 5, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Spatially and frequency-resolved monitoring of intradie capacitive coupling by heterodyne excitation infrared lock-in thermography
J. Leon, X. Perpina, J. Altet, M. Vellvehi, and X. Jorda This paper combines the infrared lock-in thermography (IR-LIT) and heterodyne excitation techniques to detect high-frequency capacitive currents due to intradie electrical coupling between microelectronic devices or more complex systems. Modulating the excitation with the heterodyne approach, we dri ... [Appl. Phys. Lett. 102, 054103 (2013)] published Tue Feb 5, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

In situ observation of nickel as an oxidizable electrode material for the solid-electrolyte-based resistive random access memory
Jun Sun, Qi Liu, Hongwei Xie, Xing Wu, Feng Xu et al. In this letter, we dynamically investigate the resistive switching characteristics and physical mechanism of the Ni/ZrO/Pt device. The device shows stable bipolar resistive switching behaviors after forming process, which is similar to the Ag/ZrO/Pt and Cu/ZrO/Pt devices. Using in situ transmission ... [Appl. Phys. Lett. 102, 053502 (2013)] published Tue Feb 5, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Scattering due to large cluster embedded in quantum wells
Changbo Liu, Guijuan Zhao, Guipeng Liu, Yafeng Song, Heng Zhang et al. Two dimensional electron gas mobility limited by the scattering of large cluster is studied. From this study, we find that the scattering caused by conduction band offset between host well and multiple mini-quantum well (mini-QW) series aligned along the QW channel, i.e., quantum pits, can be treate ... [Appl. Phys. Lett. 102, 052105 (2013)] published Tue Feb 5, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

Optically excited multi-band conduction in LaAlO/SrTiO heterostructures
V. K. Guduru, A. Granados del Aguila, S. Wenderich, M. K. Kruize, A. McCollam et al. The low-temperature resistance of a conducting LaAlO/SrTiO interface with a 10 nm LaAlO film decreases by more than 50% after illumination with light of energy higher than the SrTiO band-gap. We explain our observations by optical excitation of an additional high mobility electron channel, which is ... [Appl. Phys. Lett. 102, 051604 (2013)] published Tue Feb 5, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research

The growth of microcrystalline silicon oxide thin films studied by in situ plasma diagnostics
S. Kirner, O. Gabriel, B. Stannowski, B. Rech, and R. Schlatmann The crystallinity and refractive index of microcrystalline silicon oxide ([mu]c-SiO:H) n-layers and their dependence on the pressure and radio frequency power during the deposition process is correlated with plasma properties derived from in situ diagnostics. From process gas depletion measurements, ... [Appl. Phys. Lett. 102, 051906 (2013)] published Tue Feb 5, 2013.
Source: Applied Physics Letters - February 5, 2013 Category: Physics Source Type: research