Scientific Reports Physics Table of Contents e-alert: 11 November 2014

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11 November 2014      • Visit Scientific Reports • Submit your manuscript to Scientific Reports     Welcome to your Table of Contents e-alert for Scientific Reports               Physical Sciences               Determination of the electrostatic potential distribution in Pt/Fe:SrTiO3/Nb:SrTiO3 thin-film structures by electron holography ▶     Astrid Marchewka, David Cooper, Christian Lenser et al.     We determined the electrostatic potential distribution in pristine Pt/Fe:SrTiO3/Nb:SrTiO3 structures by electron holography experiments, revealing the existence of a depletion …             Photoluminescence mechanisms of metallic Zn nanospheres, semiconducting ZnO nanoballoons, and metal-semiconductor Zn/ZnO nanospheres ▶     Jin-Han Lin, Ranjit A. Patil, Rupesh S. Devan et al.     We utilized a thermal radiation method to synthesize semiconducting hollow ZnO nanoballoons and metal-semiconductor concentric solid Zn/ZnO nanospheres from metallic solid Zn …             Broadband focusing and collimation of water waves by zero refractive index ▶     Chi Zhang, C. T. Chan, Xinhua Hu     It is always a challenge to realize extreme and unusual values of refractive index for a broad range of frequencies. We show that when water is covered by a thick, rigid and …             Dislocation creation and void nucleation in FCC ductile metals under tensile loading: A general microscopic picture ▶     Wei-Wei Pang, Ping Zhang, Guang-Cai Zhang et al.     Numerous theoretical and experimental efforts have been paid to describe and understand the dislocation and void nucleation processes that are fundamental for dynamic fracture …             An Optimized Table-Top Small-Angle X-ray Scattering Set-up for the Nanoscale Structural Analysis of Soft Matter ▶     T. Sibillano, L. De Caro, D. Altamura et al.     The paper shows how a table top superbright microfocus laboratory X-ray source and an innovative restoring-data algorithm, used in combination, allow to analyze the super …             The work mechanism and sub-bandgap-voltage electroluminescence in inverted quantum dot light-emitting diodes ▶     Wenyu Ji, Pengtao Jing, Ligong Zhang et al.     Through introducing a probe layer of bis(4,6-difluorophenylpyridinato-N,C2)picolinatoiridium (FIrpic) between QD emission layer and 4, 4-N, N- dicarbazole-biphenyl (CBP) hole …             Platinum-Free Counter Electrode Comprised of Metal-Organic-Framework (MOF)-Derived Cobalt Sulfide Nanoparticles for Efficient Dye-Sensitized Solar Cells (DSSCs) ▶     Shao-Hui Hsu, Chun-Ting Li, Heng-Ta Chien et al.     We fabricated a highly efficient (with a solar-to-electricity conversion efficiency (η) of 8.1%) Pt-free dye-sensitized solar cell (DSSC). The counter electrode was made of …             Pressure-induced metallization of dense (H2S)2H2 with high-Tc superconductivity ▶     Defang Duan, Yunxian Liu, Fubo Tian et al.     The high pressure structures, metallization, and superconductivity of recently synthesized H2-containing compounds (H2S)2H2 are elucidated by ab initio calculations. The ordered …             A new non-destructive readout by using photo-recovered surface potential contrast ▶     Le Wang, Kui-juan Jin, Jun-xing Gu et al.     Ferroelectric random access memory is still challenging in the feature of combination of room temperature stability, non-destructive readout and high intensity storage. As a …             Assessing Telomere Length Using Surface Enhanced Raman Scattering ▶     Shenfei Zong, Zhuyuan Wang, Hui Chen et al.     Telomere length can provide valuable insight into telomeres and telomerase related diseases, including cancer. Here, we present a brand-new optical telomere length measurement …             Trend of telomerase activity change during human iPSC self-renewal and differentiation revealed by a quartz crystal microbalance based assay ▶     Yitian Zhou, Ping Zhou, Yinqiang Xin et al.     Telomerase plays an important role in governing the life span of cells for its capacity to extend telomeres. As high activity of telomerase has been found in stem cells and …             Design of Three-shell Icosahedral Matryoshka Clusters A@B12@A20 (A=Sn, Pb; B=Mg, Zn, Cd, Mn) ▶     Xiaoming Huang, Jijun Zhao, Yan Su et al.     We propose a series of icosahedral matryoshka clusters of A@B12@A20 (A=Sn, Pb; B=Mg, Zn, Cd), which possess large HOMO-LUMO gaps (1.29 to 1.54 eV) and low formation energies …             Information Causality in the Quantum and Post-Quantum Regime ▶     Martin Ringbauer, Alessandro Fedrizzi, Dominic W. Berry et al.     Quantum correlations can be stronger than anything achieved by classical systems, yet they are not reaching the limit imposed by relativity. The principle of information …             Impact of Roles Assignation on Heterogeneous Populations in Evolutionary Dictator Game ▶     Xinyang Deng, Qi Liu, Rehan Sadiq et al.     The evolution of cooperation is a hot and challenging topic in the field of evolutionary game theory. Altruistic behavior, as a particular form of cooperation, has been widely …             Physical assembly of Ag nanocrystals on enclosed surfaces in monocrystalline Si ▶     Michael S. Martin, N. David Theodore, Chao-Chen Wei et al.     Growth of thin crystals on external substrate surfaces by many different methods is a well-known technique, but its extension to inner, enclosed surfaces of large defects in …             Heterogeneous Integration of Epitaxial Ge on Si using AlAs/GaAs Buffer Architecture: Suitability for Low-power Fin Field-Effect Transistors ▶     Mantu K. Hudait, Michael Clavel, Patrick Goley et al.     Germanium-based materials and device architectures have recently appeared as exciting material systems for future low-power nanoscale transistors and photonic devices. …             Quantum discord as a resource for quantum cryptography ▶     Stefano Pirandola     Quantum discord is the minimal bipartite resource which is needed for a secure quantum key distribution, being a cryptographic primitive equivalent to non-orthogonality. Its role …             Energy barrier at the N719-dye/CsSnI3 interface for photogenerated holes in dye-sensitized solar cells ▶     Jin Zhang, Chunhui Yu, Lili Wang et al.     This report is to address the question if black γ-polymorph of cesium tin tri-iodide (B-γ-CsSnI3) can be used as a solid-state hole-transport material in the conventional DSSCs …             Electric tuning of direct-indirect optical transitions in silicon ▶     J. Noborisaka, K. Nishiguchi, A. Fujiwara     Electronic band structures in semiconductors are uniquely determined by the constituent elements of the lattice. For example, bulk silicon has an indirect bandgap and it …             Planar heterojunction perovskite solar cells with superior reproducibility ▶     Ye-Jin Jeon, Sehyun Lee, Rira Kang et al.     Perovskite solar cells (PeSCs) have been considered one of the competitive next generation power sources. To date, light-to-electric conversion efficiencies have rapidly …             Loop formation and self-fasciculation of cortical axon using photonic guidance at long working distance ▶     Argha Mondal, Bryan Black, Young-tae Kim et al.     The accuracy of axonal pathfinding and the formation of functional neural circuitry are crucial for an organism to process, store, and retrieve information from internal networks …             Nanofiber based triple layer hydro-philic/-phobic membrane - a solution for pore wetting in membrane distillation ▶     J. A. Prince, D. Rana, T. Matsuura et al.     The innovative design and synthesis of nanofiber based hydro-philic/phobic membranes with a thin hydro-phobic nanofiber layer on the top and a thin hydrophilic nanofiber layer on …             Probing Mechanoregulation of Neuronal Differentiation by Plasma Lithography Patterned Elastomeric Substrates ▶     Ki-Hwan Nam, Nima Jamilpour, Etienne Mfoumou et al.     Cells sense and interpret mechanical cues, including cell-cell and cell-substrate interactions, in the microenvironment to collectively regulate various physiological functions. …             Hinge-like structure induced unusual properties of black phosphorus and new strategies to improve the thermoelectric performance ▶     Guangzhao Qin, Qing-Bo Yan, Zhenzhen Qin et al.     We systematically investigated the geometric, electronic and thermoelectric (TE) properties of bulk black phosphorus (BP) under strain. The hinge-like structure of BP brings …             Construction of a high-performance magnetic enzyme nanosystem for rapid tryptic digestion ▶     Gong Cheng, Si-Yang Zheng     A magnetic enzyme nanosystem have been designed and constructed by a polydopamine (PDA)-modification strategy. The magnetic enzyme nanosystem has well defined core-shell …             Industrially benign super-compressible piezoresistive carbon foams with predefined wetting properties: from environmental to electrical applications ▶     Tung Ngoc Pham, Ajaikumar Samikannu, Jarmo Kukkola et al.     In the present work electrically conductive, flexible, lightweight carbon sponge materials derived from open-pore structure melamine foams are studied and explored. Hydrophobic …             Hot pressing to enhance the transport Jc of Sr0.6K0.4Fe2As2 superconducting tapes ▶     He Lin, Chao Yao, Xianping Zhang et al.     High-performance Sr0.6K0.4Fe2As2 (Sr-122) tapes have been successfully fabricated using hot pressing (HP) process. The effect of HP temperatures (850–925°C) on the c-axis …             Exciton-like electromagnetic excitations in non-ideal microcavity supercrystals ▶     Vladimir Rumyantsev, Stanislav Fedorov, Kostyantyn Gumennyk et al.     We study localized photonic excitations in a quasi-two-dimensional non-ideal binary microcavity lattice with use of the virtual crystal approximation. The effect of point defects …             Uptake of liquid from wet surfaces by the brush-tipped proboscis of a butterfly ▶     Seung Chul Lee, Sang Joon Lee     This study investigated the effect of the brush-tipped proboscis of the Asian comma (Polygonia c-aureum) on wet-surface feeding. The tip region of this proboscis was observed, …             The effect of fluorescent nanodiamonds on neuronal survival and morphogenesis ▶     Yung-An Huang, Chun-Wei Kao, Kuang-Kai Liu et al.     Nanodiamond (ND) has emerged as a promising carbon nanomaterial for therapeutic applications. In previous studies, ND has been reported to have outstanding biocompatibility and …             Ionic electroactive polymer artificial muscles in space applications ▶     Andres Punning, Kwang J. Kim, Viljar Palmre et al.     A large-scale effort was carried out to test the performance of seven types of ionic electroactive polymer (IEAP) actuators in space-hazardous environmental factors in laboratory …             Quantum magnetic phase transition in square-octagon lattice ▶     An Bao, Hong-Shuai Tao, Hai-Di Liu et al.     Quantum magnetic phase transition in square-octagon lattice was investigated by cellular dynamical mean field theory combining with continuous time quantum Monte Carlo algorithm. …             Symmetrically periodic segregation in a vertically vibrated binary granular bed ▶     Pingping Wen, Ning Zheng, Liangsheng Li et al.     Periodic segregation behaviors in fine mixtures of copper and alumina particles, including both percolation and eruption stages, are experimentally investigated by varying the …             Re-building Daniell Cell with a Li-ion exchange Film ▶     Xiaoli Dong, Yonggang Wang, Yongyao Xia     Daniell cell (i.e. Zn-Cu battery) is widely used in chemistry curricula to illustrate how batteries work, although it has been supplanted in the late 19th century by more modern …             Thermally assisted electric field control of magnetism in flexible multiferroic heterostructures ▶     Yiwei Liu, Qingfeng Zhan, Guohong Dai et al.     Thermal and electrical control of magnetic anisotropy were investigated in flexible Fe81Ga19 (FeGa)/Polyvinylidene fluoride (PVDF) multiferroic heterostructures. Due to the large …             Level Anticrossing of Impurity States in Semiconductor Nanocrystals ▶     Anvar S. Baimuratov, Ivan D. Rukhlenko, Vadim K. Turkov et al.     The size dependence of the quantized energies of elementary excitations is an essential feature of quantum nanostructures, underlying most of their applications in science and …             Anatomy and efficiency of urban multimodal mobility ▶     Riccardo Gallotti, Marc Barthelemy     The growth of transportation networks and their increasing interconnections, although positive, has the downside effect of an increasing complexity which make them difficult to …             Controllable Schottky Barriers between MoS2 and Permalloy ▶     Weiyi Wang, Yanwen Liu, Lei Tang et al.     MoS2 is a layered two-dimensional material with strong spin-orbit coupling and long spin lifetime, which is promising for electronic and spintronic applications. However, because …             Incident light adjustable solar cell by periodic nanolens architecture ▶     Ju-Hyung Yun, Eunsongyi Lee, Hyeong-Ho Park et al.     Could nanostructures act as lenses to focus incident light for efficient utilization of photovoltaics? Is it possible, in order to avoid serious recombination loss, to realize …             Frequency-Controls of Electromagnetic Multi-Beam Scanning by Metasurfaces ▶     Yun Bo Li, Xiang Wan, Ben Geng Cai et al.     We propose a method to control electromagnetic (EM) radiations by holographic metasurfaces, including to producing multi-beam scanning in one dimension (1D) and two dimensions …             Continuity of states between the cholesteric → line hexatic transition and the condensation transition in DNA solutions ▶     Selcuk Yasar, Rudolf Podgornik, Jessica Valle-Orero et al.     A new method of finely temperature-tuning osmotic pressure allows one to identify the cholesteric → line hexatic transition of oriented or unoriented long-fragment DNA bundles in …             Development of Amperometric Glucose Biosensor Based on Prussian Blue Functionlized TiO2 Nanotube Arrays ▶     Zhi-Da Gao, Yongfang Qu, Tongtong Li et al.     Amperometric biosensors consisting of oxidase and peroxidase have attracted great attention because of their wide application. The current work demonstrates a novel approach to …             Plasmonic black metals via radiation absorption by two-dimensional arrays of ultra-sharp convex grooves ▶     Jonas Beermann, René L. Eriksen, Tobias Holmgaard et al.     Plasmonic black surfaces formed by two-dimensional arrays of ultra-sharp convex metal grooves, in which the incident radiation is converted into gap surface plasmon polaritons …             Spinmotive force due to motion of magnetic bubble arrays driven by magnetic field gradient ▶     Yuta Yamane, Shayan Hemmatiyan, Jun'ichi Ieda et al.     Interaction between local magnetization and conduction electrons is responsible for a variety of phenomena in magnetic materials. It has been recently shown that spin current and …             High-speed Intravascular Photoacoustic Imaging of Lipid-laden Atherosclerotic Plaque Enabled by a 2-kHz Barium Nitrite Raman Laser ▶     Pu Wang, Teng Ma, Mikhail N. Slipchenko et al.     Lipid deposition inside the arterial wall is a key indicator of plaque vulnerability. An intravascular photoacoustic (IVPA) catheter is considered a promising device for …             A new strategy for integrating abundant oxygen functional groups into carbon felt electrode for vanadium redox flow batteries ▶     Ki Jae Kim, Seung-Wook Lee, Taeeun Yim et al.     The effects of surface treatment combining corona discharge and hydrogen peroxide (H2O2) on the electrochemical performance of carbon felt electrodes for vanadium redox flow …             Spin-helical Dirac states in graphene induced by polar-substrate surfaces with giant spin-orbit interaction: a new platform for spintronics ▶     S. V. Eremeev, I. A. Nechaev, P. M. Echenique et al.     Spintronics, or spin electronics, is aimed at efficient control and manipulation of spin degrees of freedom in electron systems. To comply with demands of nowaday spintronics, …             A High-Order Statistical Tensor Based Algorithm for Anomaly Detection in Hyperspectral Imagery ▶     Xiurui Geng, Kang Sun, Luyan Ji et al.     Recently, high-order statistics have received more and more interest in the field of hyperspectral anomaly detection. However, most of the existing high-order statistics based …             Credit Default Swaps networks and systemic risk ▶     Michelangelo Puliga, Guido Caldarelli, Stefano Battiston     Credit Default Swaps (CDS) spreads should reflect default risk of the underlying corporate debt. Actually, it has been recognized that CDS spread time series did not anticipate …             Recrystallization and grain growth induced by ELMs-like transient heat loads in deformed tungsten samples ▶     A. Suslova, O. El-Atwani, D. Sagapuram et al.     Tungsten has been chosen as the main candidate for plasma facing components (PFCs) due to its superior properties under extreme operating conditions in future nuclear fusion …             Ultrafast High-Resolution Mass Spectrometric Finger Pore Imaging in Latent Finger Prints ▶     Christian Elsner, Bernd Abel     Latent finger prints (LFPs) are deposits of sweat components in ridge and groove patterns, left after human fingers contact with a surface. 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