Scientific Reports Physics Table of Contents e-alert: July 2013

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	Physical Sciences
	A Complete Physical Germanium-on-Silicon Quantum Dot Self-Assembly Process ▶     Amro Alkhatib, Ammar Nayfeh     Achieving quantum dot self-assembly at precise pre-defined locations is of vital interest. In this work, a novel physical method for producing germanium quantum dots on silicon …             Probing carrier lifetimes in photovoltaic materials using subsurface two-photon microscopy ▶     Edward S. Barnard, Eric T. Hoke, Stephen T. Connor et al.     Accurately measuring the bulk minority carrier lifetime is one of the greatest challenges in evaluating photoactive materials used in photovoltaic cells. One-photon time-resolved …             Innovative approach to the design of low-cost Zr-based BMG composites with good glass formation ▶     Jia-Lin Cheng, Guang Chen, Chain-Tsuan Liu et al.     The high manufacturing cost for metallic glasses hampers actual commercial applications of this class of fascinating materials. In this letter, the effect of oxygen impurity on …             Fast, exact, and non-destructive diagnoses of contact failures in nano-scale semiconductor device using conductive AFM ▶     ChaeHo Shin, Kyongjun Kim, JeongHoi Kim et al.     We fabricated a novel in-line conductive atomic force microscopy (C-AFM), which can analyze the resistive failures and examine process variance with an exact-positioning …             Symmetry-Defying Iron Pyrite (FeS2) Nanocrystals through Oriented Attachment ▶     Maogang Gong, Alec Kirkeminde, Shenqiang Ren     Iron pyrite (fool's gold, FeS2) is a promising earth abundant and environmentally benign semiconductor material that shows promise as a strong and broad absorber for photovoltaics …             Non-Engineered Nanoparticles of C60 ▶     Shigeru Deguchi, Sada-atsu Mukai, Hide Sakaguchi et al.     We discovered that rubbing bulk solids of C60 between fingertips generates nanoparticles including the ones smaller than 20 nm. Considering the difficulties usually associated …             Surface plasmon delocalization in silver nanoparticle aggregates revealed by subdiffraction supercontinuum hot spots ▶     Nicholas J. Borys, Eyal Shafran, John M. Lupton     The plasmonic resonances of nanostructured silver films produce exceptional surface enhancement, enabling reproducible single-molecule Raman scattering measurements. Supporting a …             ERRATUM: Three-Dimensional Volume Containing Multiple Two-Dimensional Information Patterns ▶     Hirotaka Nakayama, Atsushi Shiraki, Ryuji Hirayama et al.                 Extraordinary hall balance ▶     S. L. Zhang, Y. Liu, L. J. Collins-McIntyre et al.     Magnetoresistance (MR) effects are at the heart of modern information technology. However, future progress of giant and tunnelling MR based storage and logic devices is limited by …             Solution-Processed Flexible Fluorine-doped Indium Zinc Oxide Thin-Film Transistors Fabricated on Plastic Film at Low Temperature ▶     Jin-Suk Seo, Jun-Hyuck Jeon, Young Hwan Hwang et al.     Transparent flexible fluorine-doped indium zinc oxide (IZO:F) thin-film transistors (TFTs) were demonstrated using the spin-coating method of the metal fluoride precursor aqueous …             Nanocomposite based flexible ultrasensitive resistive gas sensor for chemical reactions studies ▶     Sadanand Pandey, Gopal K. Goswami, Karuna K. Nanda     Room temperature operation, low detection limit and fast response time are highly desirable for a wide range of gas sensing applications. However, the available gas sensors suffer …             Interfacial Properties of Bilayer and Trilayer Graphene on Metal Substrates ▶     Jiaxin Zheng, Yangyang Wang, Lu Wang et al.     One popular approach to prepare graphene is to grow them on transition metal substrates via chemical vapor deposition. By using the density functional theory with dispersion …             Ultrathin and lightweight microwave absorbers made of mu-near-zero metamaterials ▶     Shuomin Zhong, Sailing He     We present a theory of perfect absorption in a bilayer model composed of a mu-near-zero (MNZ) metamaterial (MM) absorbing layer on a metallic substrate. Our analytical solutions …             Enhancing graphene reinforcing potential in composites by hydrogen passivation induced dispersion ▶     Yingchao Yang, William Rigdon, Xinyu Huang et al.     To take full advantages of the structural uniqueness and exceptional properties of graphene as reinforcement in composites, harvesting well-dispersed graphene is essential. On the …             Highly Efficient Visible Light-Induced O2 Generation by Self-Assembled Nanohybrids of Inorganic Nanosheets and Polyoxometalate Nanoclusters ▶     Jayavant L. Gunjakar, Tae Woo Kim, In Young Kim et al.     Unusually high photocatalytic activity of visible light-induced O2 generation can be achieved by electrostatically-derived self-assembly between exfoliated Zn-Cr-LDH 2D nanosheets …             On the near-wall accumulation of injectable particles in the microcirculation: smaller is not better ▶     Tae-Rin Lee, Myunghwan Choi, Adrian M. Kopacz et al.     Although most nanofabrication techniques can control nano/micro particle (NMP) size over a wide range, the majority of NMPs for biomedical applications exhibits a diameter of …             Novel kinetic trapping in charged colloidal clusters due to self-induced surface charge organization ▶     Christian L. Klix, Ken-ichiro Murata, Hajime Tanaka et al.     Colloidal clusters are an unusual state of matter where tunable interactions enable a sufficient reduction in their degrees of freedom that their energy landscapes can become …             Fluorescent microscopy beyond diffraction limits using speckle illumination and joint support recovery ▶     Junhong Min, Jaeduck Jang, Dongmin Keum et al.     Structured illumination microscopy (SIM) breaks the optical diffraction limit by illuminating a sample with a series of line-patterned light. Recently, in order to alleviate the …             Ultrafast Energy Transfer in Ultrathin Organic Donor/Acceptor Blend ▶     Ajay Ram Srimath Kandada, Giulia Grancini, Annamaria Petrozza et al.     It is common knowledge that poly(3-hexylthiophene) (P3HT)/[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) blend, a prototype system for bulk heterojunction (BHJ) solar cells, …             Unraveling the Geometry Dependence of In-Nozzle Cavitation in High-Pressure Injectors ▶     Kyoung-Su Im, Seong-Kyun Cheong, Christopher F. Powell et al.     Cavitation is an intricate multiphase phenomenon that interplays with turbulence in fluid flows. It exhibits clear duality in characteristics, being both destructive and …             Dual functions of YF3:Eu3+ for improving photovoltaic performance of dye-sensitized solar cells ▶     Jihuai Wu, Jiangli Wang, Jianming Lin et al.     In order to enhance the photovoltaic performance of dye-sensitized solar cell (DSSC), a novel design is demonstrated by introducing rare-earth compound europium ion doped yttrium …             Mass-related inversion symmetry breaking and phonon self-energy renormalization in isotopically labeled AB-stacked bilayer graphene ▶     Paulo T. Araujo, Otakar Frank, Daniela L. Mafra et al.     A mass-related symmetry breaking in isotopically labeled bilayer graphene (2LG) was investigated during in-situ electrochemical charging of AB stacked (AB-2LG) and turbostratic …             Periodic Architecture for High Performance Shock Absorbing Composites ▶     Abha Misra, Praveen Kumar     A novel composite architecture consisting of a periodic arrangement of closely-spaced spheres of a stiff material embedded in a soft matrix is proposed for extremely high damping …             Exploiting design freedom in biaxial dielectrics to enable spatially overlapping optical instruments ▶     Alireza Akbarzadeh, Cheng-Wei Qiu, Aaron J. Danner     The optical behavior of gradient biaxial dielectrics has not been widely explored in the literature due to their complicated nature, but the extra degrees of freedom in the index …             Parametric spectro-temporal analyzer (PASTA) for real-time optical spectrum observation ▶     Chi Zhang, Jianbing Xu, P. C. Chui et al.     Real-time optical spectrum analysis is an essential tool in observing ultrafast phenomena, such as the dynamic monitoring of spectrum evolution. However, conventional method such …             A novel nanometric DNA thin film as a sensor for alpha radiation ▶     Atul Kulkarni, Byeonghoon Kim, Sreekantha Reddy Dugasani et al.     The unexpected nuclear accidents have provided a challenge for scientists and engineers to develop sensitive detectors, especially for alpha radiation. Due to the high linear …             Multiferroic Behavior in Elemental Selenium below 40 K: Effect of Electronic Topology ▶     Anirban Pal, Sharmila N. Shirodkar, Smita Gohil et al.     The quasi-one-dimensional, chiral crystal structure of Selenium has fascinating implications: we report simultaneous magnetic and ferroelectric order in single crystalline Se …             Strain sensitivity and durability in p-type and n-type organic thin-film transistors with printed silver electrodes ▶     Kenjiro Fukuda, Kenta Hikichi, Tomohito Sekine et al.     Mechanical flexibility and compatibility of printing processes are key advantage that organic electronic devices have over conventional inorganic devices. However, one of the …             STED microscope with Spiral Phase Contrast ▶     Marcel A. Lauterbach, Marc Guillon, Asma Soltani et al.     Stimulated Emission Depletion (STED) microscopy enables superresolution imaging of fluorescently marked nano-structures in vivo. Biological investigations are often hindered by …             Superconductivity in Topological Insulator Sb2Te3 Induced by Pressure ▶     J. Zhu, J. L. Zhang, P. P. Kong et al.     Topological superconductivity is one of most fascinating properties of topological quantum matters that was theoretically proposed and can support Majorana Fermions at the edge …             The hybrid lattice of KxFe2−ySe2: where superconductivity and magnetism coexist ▶     Despina Louca, Keeseong Park, Bing Li et al.     Much remains unknown of the microscopic origin of superconductivity in atomically disordered systems of amorphous alloys or in crystals riddled with defects. A manifestation of …             Two-photon interference between disparate sources for quantum networking ▶     A. R. McMillan, L. Labonté, A. S. Clark et al.     Quantum networks involve entanglement sharing between multiple users. Ideally, any two users would be able to connect regardless of the type of photon source they employ, provided …             Fault-tolerant quantum computation with a soft-decision decoder for error correction and detection by teleportation ▶     Hayato Goto, Hironori Uchikawa     Fault-tolerant quantum computation with quantum error-correcting codes has been considerably developed over the past decade. However, there are still difficult issues, …             Negative Quantum Capacitance Induced by Midgap States in Single-layer Graphene ▶     Lin Wang, Yang Wang, Xiaolong Chen et al.     We demonstrate that single-layer graphene (SLG) decorated with a high density of Ag adatoms displays the unconventional phenomenon of negative quantum capacitance. The Ag adatoms …             Spontaneous electrical charging of droplets by conventional pipetting ▶     Dongwhi Choi, Horim Lee, Do Jin Im et al.     We report that a droplet dispensed from a micropipette almost always has a considerable electrical charge of a magnitude dependent on the constituents of the droplet, on …             Desmosine-Inspired Cross-Linkers for Hyaluronan Hydrogels ▶     Valentin Hagel, Markus Mateescu, Alexander Southan et al.     We designed bioinspired cross-linkers based on desmosine, the cross-linker in natural elastin, to prepare hydrogels with thiolated hyaluronic acid. These short, rigid …             Proton Radiography Peers into Metal Solidification ▶     Amy Clarke, Seth Imhoff, Paul Gibbs et al.     Historically, metals are cut up and polished to see the structure and to infer how processing influences the evolution. We can now peer into a metal during processing without …             Robustness