Formation of an extended CoSi thin nanohexagons array coherently buried in silicon single crystal
Guinther Kellermann, Luciano A. Montoro, Lisandro J. Giovanetti, Paula C. dos Santos Claro, Liang Zhang et al.
A Co-doped silica film was deposited on the surface of a Si(100) wafer and isothermally annealed at 750 degrees C to form spherical Co nanoparticles embedded in the silica film and a few atomic layer thick CoSi nanoplatelets within the wafer. The structure, morphology, and spatial orientation of th ... [Appl. Phys. Lett. 100, 063116 (2012)] published Fri Feb 10, 2012.
Electronic rectification devices from carbon nanocones
Chen Ming, Zheng-Zhe Lin, Jun Zhuang, and Xi-Jing Ning
The electronic rectification effects of single wall carbon nanocones (SWCNCs) with cone angles 113 degrees , 60 degrees , and 39 degrees are shown by density functional theory calculation and non-equilibrium Green's functional method, and the 113 degrees cone owns the best rectification. Based on ... [Appl. Phys. Lett. 100, 063119 (2012)] published Fri Feb 10, 2012.
Fabrication of disconnected three-dimensional silver nanostructures in a polymer matrix
Kevin Vora, SeungYeon Kang, Shobha Shukla, and Eric Mazur
We present a simple, one-step technique for direct-writing of a structured nanocomposite material with disconnected silver nanostructures in a polymer matrix. A nonlinear optical interaction between femtosecond laser pulses and a composite material creates silver structures that are embedded inside ... [Appl. Phys. Lett. 100, 063120 (2012)] published Fri Feb 10, 2012.
Well-arranged novel InGaN hexagonal nanoplates at the tops of nitrogen-polarity GaN nanocolumn arrays
Tetsuya Kouno (光野徹也) and Katsumi Kishino (岸野克巳)
Periodically arranged novel InGaN hexagonal nanoplates were fabricated at the tops of square-lattice N-polarity GaN nanocolumn arrays. The key finding in this work is that the growth of InGaN on N-polarity GaN nanocolumns led to a peculiar nanoplate structure. The InGaN nanoplates with thicknesses o ... [AIP Advances 2, 012140 (2012)] published Thu Feb 9, 2012.
Magnetic behaviour of NiZnCoFeO spinel nano-ferrite
Atul Thakur, Preeti Thakur, and Jen-Hwa Hsu
Nanoparticles of the spinel ferrite NiZnCoFeO, have been synthesized by a co-precipitation method. The x-ray diffraction patterns of the particles confirmed the formation of single-phase cubic spinel structure. The Langevin function fitting on M-H data at 300 K gives a log-normal particle size distr ... [J. Appl. Phys. 111, 07A305 (2012)] published Thu Feb 9, 2012.
Resonant magnetic response of TiO microspheres at terahertz frequencies
H. Nemec, C. Kadlec, F. Kadlec, P. Kuzel, R. Yahiaoui et al.
Spray-drying technique is used to fabricate spherical microparticles out of dissolved TiO nanoparticles. We show both experimentally and through numerical calculations that the microspheres support a Mie resonance, leading to an effective magnetic response. For this purpose, nearly single layers of ... [Appl. Phys. Lett. 100, 061117 (2012)] published Thu Feb 9, 2012.
Realizing the Multiparticle Hanbury BrownTwiss Interferometer Using Nitrogen-Vacancy Centers in Diamond Crystals
Li Dai and L. C. Kwek
We demonstrate that the multiparticle Hanbury BrownTwiss interferometer can be realized in a network of nitrogen-vacancy centers: for an N-particle system, the interference effect is manifested only in the Nth-order intensity correlation function. The interference effect can be enhanced through a po ... [Phys. Rev. Lett. 108, 066803 ] published .
Morphology of Lamellae-Forming Block Copolymer Films between Two Orthogonal Chemically Nanopatterned Striped Surfaces
Guoliang Liu, Abelardo Ramirez-Hernandez, Hiroshi Yoshida, Kim Nygard, Dillip K. Satapathy et al.
The structure of block copolymers results from the interplay between weak intermolecular forces, typically in the order of kT per molecule. This is particularly true for block copolymer thin films in the presence of chemically patterned surfaces, where the different contributions to the total free e ... [Phys. Rev. Lett. 108, 065502 ] published .
Effect of indium doping on physical properties of nanocrystallized SnS zinc blend thin films grown by chemical bath deposition
Meriem Reghima, Anis Akkari, Cathy Guasch, and Najoua Kamoun-Turki
SnS:In thin films have been successfully prepared on Pyrex substrates using low cost chemical bath deposition technique with different indium concentrations (y=(([In])/([Sn]))=4%,6%,8%,and10%). The structure, the surface morphology, and the optical properties of the SnS:In films were studied by x-ra ... [J. Renewable Sustainable Energy 4, 011602 (2012)] published Wed Feb 8, 2012.
Enhancement of photoluminescence signal from ultrathin layers with silicon nanocrystals
S. A. Dyakov, D. M. Zhigunov, A. Hartel, M. Zacharias, T. S. Perova et al.
Using the model of oscillating dipoles, we simulated the photoluminescence intensity of a triple-layered structure where the silicon nanocrystals layer was enclosed by buffer and capping silicon dioxide layers. It was found that a structure with an optimized buffer layer thickness exhibited photolum ... [Appl. Phys. Lett. 100, 061908 (2012)] published Wed Feb 8, 2012.
Fabrication of nanoscale glass fibers by electrospinning
M. Praeger, E. Saleh, A. Vaughan, W. J. Stewart, and W. H. Loh
We report the experimental realization of glass nanofibers by electrospinning directly from a melt, demonstrating the viability of electrospinning fibers from non-polymer materials with high melting temperatures and higher surface tensions. The nanofiber material (BO) is molten on the tip of a gold ... [Appl. Phys. Lett. 100, 063114 (2012)] published Wed Feb 8, 2012.
Planar-localized surface plasmon resonance device by block-copolymer and nanoimprint lithography fabrication methods
C. Y. Peter Yang, Elaine L. Yang, Chip A. Steinhaus, Chi-Chun Liu, Paul F. Nealey et al.
The authors report on the integration of delocalized surface plasmon resonances (SPRs) and localized surface plasmon resonances (LSPRs) on a single device. The submicron SPR device was fabricated with nanoimprint lithography (NIL). Gold nanoparticles for LSPR generation were created and deposited vi ... [J. Vac. Sci. Technol. B 30, 026801 (2012)] published Wed Feb 8, 2012.
Porous antimony-doped tin oxide cathodes formed by supercritical CO treatment at low temperature for silver electro-deposition
W. C. Tien, A. K. Chu, H. Y. Wen, M. Y. Chang, and W. Y. Huang
Porous antimony-doped tin oxide (ATO) cathodes for silver electrodeposition devices are proposed. The porous structure of the cathodes is obtained by applying supercritical CO (SCCO) treatment at 60 degrees C on spin-coated ATO nanoparticles. The morphological, structural, and electrical properties ... [J. Vac. Sci. Technol. A 30, 020603 (2012)] published Wed Feb 8, 2012.
Self-organized ZnO nanodot arrays: Effective control using SiN interlayers and low-temperature plasmas
S. Y. Huang, Q. J. Cheng, S. Xu, D. Y. Wei, H. P. Zhou et al.
An advanced inductively coupled plasma (ICP)-assisted rf magnetron sputtering deposition method is developed to synthesize regular arrays of pear-shaped ZnO nanodots on a thin SiN buffer layer pre-deposited onto a silicon substrate. It is shown that the growth of ZnO nanodots obey the cubic root-law ... [J. Appl. Phys. 111, 036101 (2012)] published Tue Feb 7, 2012.
The weak pi pi interaction originated resonant tunneling and fast switching in the carbon based electronic devices
Jun He, Ke-Qiu Chen, and Chang Q. Sun
By means of the nonequilibrium Green's functions and the density functional theory, we have investigated the electronic transport properties of C based electronic device with different intermolecular interactions. It is found that the electronic transport properties vary with the types of the intera ... [AIP Advances 2, 012137 (2012)] published Mon Feb 6, 2012.
Manganese dioxide modified silicon nanowires and their excellent catalysis in the decomposition of methylene blue
Weiwei Gao, Mingwang Shao, Li Yang, Shujuan Zhuo, Shiyong Ye et al.
A redox between hydrofluoric acid and ammonium fluoride-treated silicon nanowires and potassium permanganate solution was investigated. The results showed that MnO nanoparticles might grow on the surface of silicon nanowires, which was confirmed with the transmission electron microscope. These MnO m ... [Appl. Phys. Lett. 100, 063104 (2012)] published Mon Feb 6, 2012.
Enhancement of critical heat flux in pool boiling using atomic layer deposition of alumina
Bo Feng, Keith Weaver, and G. P. Peterson
Alumina nano coatings on platinum (Pt) micro wires were fabricated using atomic layer deposition. During the pool boiling heat transfer, the critical heat flux (CHF) of Pt/Alumina in de-ionized water was found to have a two-fold enhancement compared to that of the same Pt bare wire. The CHF was show ... [Appl. Phys. Lett. 100, 053120 (2012)] published Fri Feb 3, 2012.
Silver nano particle formation on Ar plasma treated cinnamyl alcohol
S. Dahle, M. Marschewski, L. Wegewitz, W. Viol, and W. Maus-Friedrichs
Metastable induced electron spectroscopy, ultraviolet photoelectron spectroscopy, X-ray photoelectron spectroscopy, and atomic force microscopy are employed to study the adsorption of silver on cinnamyl alcohol films prepared on Au(111) substrates by thermal evaporation. Additionally, the impact of ... [J. Appl. Phys. 111, 034902 (2012)] published Fri Feb 3, 2012.
Enhanced indirect ferromagnetic p-d exchange coupling of Mn in oxygen rich ZnO:Mn nanoparticles synthesized by wet chemical method
Usman Ilyas, R. S. Rawat, T. L. Tan, P. Lee, R. Chen et al.
This paper investigates the ferromagnetism in ZnO:Mn powders and presents our findings about the role played by the doping concentration and the structural defects towards the ferromagnetic signal. The narrow-size-distributed ZnO:Mn nanoparticles based powders with oxygen rich stoichiometery were sy ... [J. Appl. Phys. 111, 033503 (2012)] published Fri Feb 3, 2012.
Low-temperature scanning tunneling microscopy/ultraviolet photoelectron spectroscopy investigation of two-dimensional crystallization of C: pentacence binary system on Ag(111)
Jia Lin Zhang, Kelvin Hong Liang Zhang, Jian Qiang Zhong, Tian Chao Niu, and Wei Chen
Atomic scale investigation of temperature-dependent two-dimensional (2 D) crystallization processes of fullerene-C on pentacene-covered Ag(111) surface has been carried out by in situ low-temperature scanning tunneling microscopy (LT-STM) experiments. To evaluate the effect of molecule-substrate int ... [J. Appl. Phys. 111, 034304 (2012)] published Thu Feb 2, 2012.
The effect of growth temperature of GaAs nucleation layer on InAs/GaAs quantum dots monolithically grown on Ge substrates
T. Wang, A. Lee, F. Tutu, A. Seeds, H. Liu et al.
The effect of the growth temperature of the GaAs nucleation layer on the properties of 1.3-[mu]m InAs/GaAs quantum dots (QDs) monolithically grown on a Ge substrate is investigated by using transmission electron microscopy, etch pit density, and photoluminescence (PL) measurements. The photoluminesc ... [Appl. Phys. Lett. 100, 052113 (2012)] published Thu Feb 2, 2012.