APL: Nanoscale Science and Design http://scitation.aip.org/ APL: Nanoscale Science and Design Superparamagnetic limit to spin-polarized vacuum tunneling from Fe-coated W(001) tips http://link.aip.org/link/?APL/95/203113/1&agg=rss Y. R. Niu and M. S. Altman<br/> Superparamagnetic fluctuations of magnetization in thin Fe films that coat a sharp W(001) tip are evident in the spin polarization of field emitted electrons. Fluctuations of polarization between four transverse directions that align with the tip directions are consistent with the in-plane biaxial ... [Appl. Phys. Lett. 95, 203113 (2009)] published Thu Nov 19, 2009. Nonvolatile memory with CoSiO core-shell nanocrystals as charge storage nodes in floating gate http://link.aip.org/link/?APL/95/203112/1&agg=rss Hai Liu, Domingo A. Ferrer, Fahmida Ferdousi, and Sanjay K. Banerjee<br/> In this letter, we reported nanocrystal floating gate memory with CoSiO core-shell nanocrystal charge storage nodes. By using a water-in-oil microemulsion scheme, CoSiO core-shell nanocrystals were synthesized and closely packed to achieve high density matrix in the floating gate without aggregation ... [Appl. Phys. Lett. 95, 203112 (2009)] published Wed Nov 18, 2009. Microwave conductance spectra of single-walled carbon nanotube arrays http://link.aip.org/link/?APL/95/203111/1&agg=rss Clark Highstrete, Mark Lee, A. Alec Talin, and Andrew L. Vance<br/> Complex conductance spectra of single-walled carbon nanotube (SWCNT) arrays have been measured from 0.1 to 50 GHz at temperatures between 4 and 293 K. Using purely capacitive contacts to separate contact effects from the NTs' response, the intrinsic SWCNT array conductance increased with frequency a ... [Appl. Phys. Lett. 95, 203111 (2009)] published Wed Nov 18, 2009. Local heating at a ferromagnet-metal interface http://link.aip.org/link/?APL/95/203103/1&agg=rss N. Neel, J. Kroger, and R. Berndt<br/> The electronic structure of individual Co islands on Cu(111) was investigated by a cryogenic scanning tunneling microscope. An irreversible shift of the occupied Co d band toward the Fermi level was induced by elevated tunneling currents and voltages. Heating of the CoCu interface most likely induce ... [Appl. Phys. Lett. 95, 203103 (2009)] published Mon Nov 16, 2009. Nanomechanical mass detection using nonlinear oscillations http://link.aip.org/link/?APL/95/203104/1&agg=rss Mai Duc Dai, Kilho Eom, and Chang-Wan Kim<br/> Nanomechanical resonators have allowed the in vitro molecular recognition. Most of detection is implemented in harmonic oscillation regime, albeit nanomechanical resonators can easily reach the nonlinear oscillation regime. In this letter, we have studied the nanomechanical mass detection using nonl ... [Appl. Phys. Lett. 95, 203104 (2009)] published Mon Nov 16, 2009. Formation of InAs/InGaAsP quantum-dashes on InP(001) http://link.aip.org/link/?APL/95/203105/1&agg=rss A. Lenz, F. Genz, H. Eisele, L. Ivanova, R. Timm et al.<br/> Self-assembled InAs/InGaAsP/InP(001) nanostructures are investigated using cross-sectional scanning tunneling microscopy. Atomically resolved images at both the (110) and the ([overline 1]10) cleavage surface show InAs quantum dashes with almost binary composition and a truncated pyramidal shape. Th ... [Appl. Phys. Lett. 95, 203105 (2009)] published Mon Nov 16, 2009. Excitation of fluorescent nanoparticles by channel plasmon polaritons propagating in V-grooves http://link.aip.org/link/?APL/95/203102/1&agg=rss Irene Fernandez-Cuesta, Rasmus B. Nielsen, Alexandra Boltasseva, Xavier Borrise, Francesc Perez-Murano et al.<br/> Recently, it has been proven that light can be squeezed into metallic channels with subwavelength lateral dimensions. Here, we present the study of the propagation of channel plasmon polaritons confined in gold V-grooves, filled with fluorescent particles. In this way, channel plasmon polaritons pro ... [Appl. Phys. Lett. 95, 203102 (2009)] published Mon Nov 16, 2009. Effect of stacking order on the magnetic and transport properties of bilayer-based oxide superlattices with inversion symmetry http://link.aip.org/link/?APL/95/203107/1&agg=rss P. Padhan and W. Prellier<br/> SrRuOSrMnO multilayers with heterointerfaces of similar inversion symmetry were fabricated. The SrTiO/[SrMnO/SrRuO] multilayer shows lower Curie temperature, smaller magnetization and larger magnetoresistance compared to SrTiO/[SrRuO/SrMnO] multilayer. The variations of these properties with the inv ... [Appl. Phys. Lett. 95, 203107 (2009)] published Mon Nov 16, 2009. Crystalline organic superlattice http://link.aip.org/link/?APL/95/203106/1&agg=rss Feng Zhu, Kun Lou, Lizhen Huang, Jianbing Yang, Jidong Zhang et al.<br/> Highly crystalline organic superlattice has great potential for providing innovative function in organic devices. With studies of the structure and fundamental electronical properties, we have demonstrated the phathalocynine organic superlattice, which is a structure composed of periodically alterna ... [Appl. Phys. Lett. 95, 203106 (2009)] published Mon Nov 16, 2009. Fivefold annealing twin in nanocrystalline Cu http://link.aip.org/link/?APL/95/203101/1&agg=rss P. Huang, G. Q. Dai, F. Wang, K. W. Xu, and Y. H. Li<br/> Fivefold annealing twin has been observed in nanocrystalline Cu at zero external stress. The microstructure of the multifold twins at various annealing temperatures has been examined by transmission electron microscopic in detail. Contrary to the well known sequential twinning mechanism, coherent tw ... [Appl. Phys. Lett. 95, 203101 (2009)] published Mon Nov 16, 2009. Silver half-shell arrays with controlled plasmonic response for fluorescence enhancement optimization http://link.aip.org/link/?APL/95/193110/1&agg=rss Cosmin Farcau and Simion Astilean<br/> Regular arrays of interconnected silver half-shells (HSs) deposited on self-organized polystyrene microspheres are proposed as plasmonic substrates for metal-enhanced fluorescence. An emission enhancement of 28 times was demonstrated for Rose Bengal fluorophore placed at about 1 nm above HSs. The en ... [Appl. Phys. Lett. 95, 193110 (2009)] published Fri Nov 13, 2009. Anharmonic phonon coupling in vapor-liquid-solid grown ZnO nanowires http://link.aip.org/link/?APL/95/193111/1&agg=rss A. Soudi, R. Lopez, Jr., R. D. Dawson, and Y. Gu<br/> We have determined quantitatively third-order anharmonic phonon coupling matrix elements in vapor-liquid-solid (VLS) grown ZnO nanowires, via an analysis of the Raman line shape of the E phonon mode. The results suggest that the decay of the E phonon into the sum of two acoustic phonons is suppresse ... [Appl. Phys. Lett. 95, 193111 (2009)] published Fri Nov 13, 2009. Strategies for nanoplasmonic core-satellite biomolecular sensors: Theory-based Design http://link.aip.org/link/?APL/95/193112/1&agg=rss Benjamin M. Ross, John R. Waldeisen, Tim Wang, and Luke P. Lee<br/> We present a systematic theoretical study of core-satellite gold nanoparticle assemblies using the Generalized Multiparticle Mie formalism. We consider the importance of satellite number, satellite radius, the core radius, and the satellite distance, and we present approaches to optimize spectral sh ... [Appl. Phys. Lett. 95, 193112 (2009)] published Fri Nov 13, 2009. Capacitance tuning of nanoscale split-ring resonators http://link.aip.org/link/?APL/95/193108/1&agg=rss Claus Jeppesen, Niels Asger Mortensen, and Anders Kristensen<br/> We investigate the capacitance tuning of nanoscale split-ring resonators. Based on a simple inductor-capacitor circuit model, we derive an expression, where the inductance is proportional to the area while the capacitance reflects the aspect ratio of the slit. The resonance frequency may thus be tun ... [Appl. Phys. Lett. 95, 193108 (2009)] published Thu Nov 12, 2009. Radio frequency operation of clocked quantum-dot cellular automata latch http://link.aip.org/link/?APL/95/193109/1&agg=rss Yong Tang, Alexei O. Orlov, Gregory L. Snider, and Patrick J. Fay<br/> The radio frequency operation of a single-electron latch based on AlAlOAl tunnel junctions is presented. By capacitively coupling the latch to a radio frequency single electron transistor, charge switching on the microsecond timescale is demonstrated. The fast switching and high repeatability of the ... [Appl. Phys. Lett. 95, 193109 (2009)] published Thu Nov 12, 2009. Photon statistics in enhanced fluorescence from a single CdSe/ZnS quantum dot in the vicinity of silver nanoparticles http://link.aip.org/link/?APL/95/193106/1&agg=rss Sadahiro Masuo, Hiroyuki Naiki, Shinjiro Machida, and Akira Itaya<br/> Single-photon emission behavior in the enhanced fluorescence from single colloidal quantum dots (QDs) near silver nanoparticles (AgNPs) was investigated using a single molecule fluorescence spectroscopy technique. It was found that the degree of fluorescence enhancement from single QDs with AgNPs in ... [Appl. Phys. Lett. 95, 193106 (2009)] published Wed Nov 11, 2009. Direct imaging of doped fluorine in LaFeAsOF superconductor by atomic scale spectroscopy http://link.aip.org/link/?APL/95/193107/1&agg=rss Tetsuya Tohei, Teruyasu Mizoguchi, Hidenori Hiramatsu, Yoichi Kamihara, Hideo Hosono et al.<br/> We report direct observation of fluorine ion dopants in the recently discovered LaFeAsOF superconductor, where the doping is critical for the superconductivity. Employing spectroscopic imaging based on scanning transmission electron microscopy, the spatial distribution of the doped fluorine ions, wh ... [Appl. Phys. Lett. 95, 193107 (2009)] published Wed Nov 11, 2009. Prediction of surface passivation doping of silicon nanowires with phosphorus http://link.aip.org/link/?APL/95/193105/1&agg=rss X. B. Yang, C. S. Guo, and R. Q. Zhang<br/> We report a prediction of enhanced surface passivation doping effect in silicon nanowires (SiNWs) by phosphorus adsorption based on first-principles calculations. Recent theoretical and experimental studies all showed that hydrogen-passivated SiNWs present typical p-type characteristic due to charge ... [Appl. Phys. Lett. 95, 193105 (2009)] published Wed Nov 11, 2009. ZnO/TiO nanonetwork as efficient photoanode in excitonic solar cells http://link.aip.org/link/?APL/95/193104/1&agg=rss A. Vomiero, I. Concina, M. M. Natile, E. Comini, G. Faglia et al.<br/> An innovative nanonetwork composed of TiO nanoparticles and single-crystalline ZnO nanowires is demonstrated as efficient photoanode in excitonic solar cells. Such architecture benefits of the capability of high sensitizer loading offered by the nanoparticles and of the direct conduction path for el ... [Appl. Phys. Lett. 95, 193104 (2009)] published Wed Nov 11, 2009. Nanowire-quantum-dot solar cells and the influence of nanowire length on the charge collection efficiency http://link.aip.org/link/?APL/95/193103/1&agg=rss Kurtis S. Leschkies, Alan G. Jacobs, David J. Norris, and Eray S. Aydil<br/> External quantum efficiency in solar cells based on junctions between PbSe quantum dots (QDs) and thin ZnO films is increased by replacing the ZnO films with a vertically oriented array of single-crystalline ZnO nanowires, and infiltrating this array with colloidal QDs. When illuminated with 100 mW ... [Appl. Phys. Lett. 95, 193103 (2009)] published Tue Nov 10, 2009. Gold adsorption induced surface alloying on Si(111)-[square root of]3 x [square root of]3-Pb surface http://link.aip.org/link/?APL/95/193102/1&agg=rss Lin Tang, Ze-Lei Guan, Dan Hao, Jin-Feng Jia, Xu-Cun Ma et al.<br/> The formation of surface Au/Pb alloys on a Pb-induced Si(111)-[square root of]3 x [square root of]3 surface is investigated using scanning tunneling microscopy (STM). Two types of alloy islands, compact and loose islands, have been observed. The former shows a long-range ordered 3 x 3-Au/Pb reconstr ... [Appl. Phys. Lett. 95, 193102 (2009)] published Tue Nov 10, 2009. A tunable few electron triple quantum dot http://link.aip.org/link/?APL/95/193101/1&agg=rss L. Gaudreau, A. Kam, G. Granger, S. A. Studenikin, P. Zawadzki et al.<br/> In this paper, we report on a tunable few electron lateral triple quantum dot design. The quantum dot potentials are arranged in series. The device is aimed at studies of triple quantum dot properties where knowing the exact number of electrons is important as well as quantum information application ... [Appl. Phys. Lett. 95, 193101 (2009)] published Mon Nov 9, 2009.