Scientific Reports Physics Table of Contents e-alert: 29 March 2016

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29 March 2016      • Visit Scientific Reports • Submit your manuscript to Scientific Reports     Welcome to your Table of Contents e-alert for Scientific Reports               Physical Sciences               Quantifying the influence of Bessel beams on image quality in optical coherence tomography ▶     Andrea Curatolo, Peter R. T. Munro, Dirk Lorenser et al.     Light scattered by turbid tissue is known to degrade optical coherence tomography (OCT) image contrast progressively with depth. Bessel beams have been proposed as an alternative …             Constructive influence of the induced electron pairing on the Kondo state ▶     T. Domański, I. Weymann, M. Barańska et al.     Superconducting order and magnetic impurities are usually detrimental to each other. We show, however, that in nanoscopic objects the induced electron pairing can have …             Shear-coupled grain boundary migration assisted by unusual atomic shuffling ▶     Liang-Liang Niu, Ying Zhang, Xiaolin Shu et al.     Shear-coupled grain boundary (GB) migration can be an efficacious mechanism to accommodate plastic deformation when the grain size of polycrystalline materials goes small. …             The origin of the criticality in meme popularity distribution on complex networks ▶     Yup Kim, Seokjong Park, Soon-Hyung Yook     Previous studies showed that the meme popularity distribution is described by a heavy-tailed distribution or a power-law, which is a characteristic feature of the criticality. …             Tailoring superradiance to design artificial quantum systems ▶     Paolo Longo, Christoph H. Keitel, Jörg Evers     Cooperative phenomena arising due to the coupling of individual atoms via the radiation field are a cornerstone of modern quantum and optical physics. Recent experiments on x-ray …             Rashba Torque Driven Domain Wall Motion in Magnetic Helices ▶     Oleksandr V. Pylypovskyi, Denis D. Sheka, Volodymyr P. Kravchuk et al.     Manipulation of the domain wall propagation in magnetic wires is a key practical task for a number of devices including racetrack memory and magnetic logic. Recently, curvilinear …             Spin-Current and Spin-Splitting in Helicoidal Molecules Due to Spin-Orbit Coupling ▶     R. A. Caetano     The use of organic materials in spintronic devices has been seriously considered after recent experimental works have shown unexpected spin-dependent electrical properties. The …             Simulated Raman correlation spectroscopy for quantifying nucleic acid-silver composites ▶     Lindsay M. Freeman, Alexei Smolyaninov, Lin Pang et al.     Plasmonic devices are of great interest due to their ability to confine light to the nanoscale level and dramatically increase the intensity of the electromagnetic field, …             Room temperature continuous wave, monolithic tunable THz sources based on highly efficient mid-infrared quantum cascade lasers ▶     Quanyong Lu, Donghai Wu, Saumya Sengupta et al.     A compact, high power, room temperature continuous wave terahertz source emitting in a wide frequency range (ν ~ 1–5 THz) is of great importance to terahertz system development …             Self-healing Characteristics of Collagen Coatings with Respect to Surface Abrasion ▶     Chang-Lae Kim, Dae-Eun Kim     A coating based on collagen with self-healing properties was developed for applications in mechanical components that are prone to abrasion due to contact with a counter surface. …             Covalent functionalization of reduced graphene oxide with porphyrin by means of diazonium chemistry for nonlinear optical performance ▶     Aijian Wang, Wang Yu, Zhipeng Huang et al.     Reduced graphene oxide (RGO)-porphyrin (TPP) nanohybrids (RGO-TPP 1 and RGO-TPP 2) were prepared by two synthetic routes that involve functionalization of the RGO using diazonium …             Erbium-doped fiber laser passively mode locked with few-layer WSe2/MoSe2 nanosheets ▶     Dong Mao, Xiaoyang She, Bobo Du et al.     Few-layer transition-metal dichalcogenide WSe2/MoSe2 nanosheets are fabricated by a liquid exfoliation technique using sodium deoxycholate bile salt as surfactant, and their …             Resolving the spin reorientation and crystal-field transitions in TmFeO3 with terahertz transient ▶     Kailin Zhang, Kai Xu, Xiumei Liu et al.     Rare earth orthoferrites (RFeO3) exhibit abundant physical properties such as, weak macroscopic magnetization, spin reorientation transition, and magneto-optical effect, …             Partially reduced graphene oxide based FRET on fiber-optic interferometer for biochemical detection ▶     B. C. Yao, Y. Wu, C. B. Yu et al.     Fluorescent resonance energy transfer (FRET) with naturally exceptional selectivity is a powerful technique and widely used in chemical and biomedical analysis. However, it is …             Structural and electronic properties of epitaxial multilayer h-BN on Ni(111) for spintronics applications ▶     A. A. Tonkikh, E. N. Voloshina, P. Werner et al.     Hexagonal boron nitride (h-BN) is a promising material for implementation in spintronics due to a large band gap, low spin-orbit coupling, and a small lattice mismatch to …             Far-field radially polarized focal spot from plasmonic spiral structure combined with central aperture antenna ▶     Lei Mao, Yuan Ren, Yonghua Lu et al.     Manipulation of a vector micro-beam with an optical antenna has significant potentials for nano-optical technology applications including bio-optics, optical fabrication, and …             Intense visible emission from ZnO/PAAX (X = H or Na) nanocomposite synthesized via a simple and scalable sol-gel method ▶     Y. Zhu, A. Apostoluk, P. Gautier et al.     Intense visible nano-emitters are key objects for many technologies such as single photon source, bio-labels or energy convertors. Chalcogenide nanocrystals have ruled this …             Silicon nanopore membrane (SNM) for islet encapsulation and immunoisolation under convective transport ▶     Shang Song, Gaetano Faleo, Raymond Yeung et al.     Problems associated with islet transplantation for Type 1 Diabetes (T1D) such as shortage of donor cells, use of immunosuppressive drugs remain as major challenges. Immune …             Magnetic nanoparticle film reconstruction modulated by immersion within DMSA aqueous solution ▶     Qing Xiang, Cimei Borges Teixeira, Li Sun et al.     The process of reconstruction of pre-fabricated films comprising maghemite nanoparticles deposited onto flat glass substrates triggered by immersion into aqueous solutions of …             Disentanglement of growth dynamic and thermodynamic effects in LaAlO3/SrTiO3 heterostructures ▶     Chencheng Xu, Christoph Bäumer, Ronja Anika Heinen et al.     The influence of non-equilibrium and equilibrium processes during growth of LaAlO3/SrTiO3 (LAO/STO) heterostructures is analyzed. We investigate the electronic properties of …             Microstructured Thin Film Nitinol for a Neurovascular Flow-Diverter ▶     Yanfei Chen, Connor Howe, Yongkuk Lee et al.     A cerebral aneurysm occurs as a result of a weakened blood vessel, which allows blood to flow into a sac or a ballooned section. Recent advancement shows that a new device, …             Artificial Synaptic Devices Based on Natural Chicken Albumen Coupled Electric-Double-Layer Transistors ▶     Guodong Wu, Ping Feng, Xiang Wan et al.     Recent progress in using biomaterials to fabricate functional electronics has got growing attention for the new generation of environmentally friendly and biocompatible …             Net-Immobilization of β-glucosidase on Nonwoven Fabrics to Lower the Cost of “Cellulosic Ethanol” and Increase Cellulose Conversions ▶     Xing Zhu, Bin He, Changwen Zhao et al.     The main limitation preventing the use of enzymatic cellulosic ethanol in industrial production is its higher cost which is mainly due to the elevated price of β-glucosidase …             Weak, Quiet Magnetic Fields Seen in the Venus Atmosphere ▶     T. L. Zhang, W. Baumjohann, C. T. Russell et al.     The existence of a strong internal magnetic field allows probing of the interior through both long term changes of and short period fluctuations in that magnetic field. Venus, …             Microscopic Origin of Strain Hardening in Methane Hydrate ▶     Jihui Jia, Yunfeng Liang, Takeshi Tsuji et al.     It has been reported for a long time that methane hydrate presents strain hardening, whereas the strength of normal ice weakens with increasing strain after an ultimate strength. …             Reproducibility of radiomics for deciphering tumor phenotype with imaging ▶     Binsheng Zhao, Yongqiang Tan, Wei-Yann Tsai et al.     Radiomics (radiogenomics) characterizes tumor phenotypes based on quantitative image features derived from routine radiologic imaging to improve cancer diagnosis, prognosis, …             Haptic Edge Detection Through Shear ▶     Jonathan Platkiewicz, Hod Lipson, Vincent Hayward     Most tactile sensors are based on the assumption that touch depends on measuring pressure. However, the pressure distribution at the surface of a tactile sensor cannot be …             Accurate Learning with Few Atlases (ALFA): an algorithm for MRI neonatal brain extraction and comparison with 11 publicly available methods ▶     Ahmed Serag, Manuel Blesa, Emma J. Moore et al.     Accurate whole-brain segmentation, or brain extraction, of magnetic resonance imaging (MRI) is a critical first step in most neuroimage analysis pipelines. The majority of brain …             Solvent-surface interactions control the phase structure in laser-generated iron-gold core-shell nanoparticles ▶     Philipp Wagener, Jurij Jakobi, Christoph Rehbock et al.     This work highlights a strategy for the one-step synthesis of FeAu nanoparticles by the pulsed laser ablation of alloy targets in the presence of different solvents. This method …             Surface plasmon resonance spectroscopy of single bowtie nano-antennas using a differential reflectivity method ▶     M. Kaniber, K. Schraml, A. Regler et al.     We report on the structural and optical properties of individual bowtie nanoantennas both on glass and semiconducting GaAs substrates. The antennas on glass (GaAs) are shown to …             Elastic metamaterials for independent realization of negativity in density and stiffness ▶     Joo Hwan Oh, Young Eui Kwon, Hyung Jin Lee et al.     In this paper, we present the first realization of an elastic metamaterial allowing independent tuning of negative density and stiffness for elastic waves propagating along a …             Structure and dynamics of optically directed self-assembly of nanoparticles ▶     Debjit Roy, Dipankar Mondal, Debabrata Goswami     Self-assembly of nanoparticles leading to the formation of colloidal clusters often serves as the representative analogue for understanding molecular assembly. Unravelling the in …             Geographically Sourcing Cocaine’s Origin – Delineation of the Nineteen Major Coca Growing Regions in South America ▶     Jennifer R. Mallette, John F. Casale, James Jordan et al.     Previously, geo-sourcing to five major coca growing regions within South America was accomplished. However, the expansion of coca cultivation throughout South America made …             Pulsed-laser micropatterned quantum-dot array for white light source ▶     Sheng-Wen Wang, Huang-Yu Lin, Chien-Chung Lin et al.     In this study, a novel photoluminescent quantum dots device with laser-processed microscale patterns has been demonstrated to be used as a white light emitting source. The pulsed …             Vectorial strain gauge method using single flexible orthogonal polydimethylsiloxane gratings ▶     Hao Guo, Jun Tang, Kun Qian et al.     A vectorial strain gauge method using a single sensing element is reported based on the double-sided polydimethylsiloxane (PDMS) Fraunhofer diffraction gratings structures. Using …             Sn/Be Sequentially co-doped Hematite Photoanodes for Enhanced Photoelectrochemical Water Oxidation: Effect of Be2+ as co-dopant ▶     Alagappan Annamalai, Hyun Hwi Lee, Sun Hee Choi et al.     For ex-situ co-doping methods, sintering at high temperatures enables rapid diffusion of Sn4+ and Be2+ dopants into hematite (α–Fe2O3) lattices, without altering the nanorod …             Monitoring the intracellular calcium response to a dynamic hypertonic environment ▶     Xiaowen Huang, Wanqing Yue, Dandan Liu et al.     The profiling of physiological response of cells to external stimuli at the single cell level is of importance. Traditional approaches to study cell responses are often limited …             Miniature Compressive Ultra-spectral Imaging System Utilizing a Single Liquid Crystal Phase Retarder ▶     Isaac August, Yaniv Oiknine, Marwan AbuLeil et al.     Spectroscopic imaging has been proved to be an effective tool for many applications in a variety of fields, such as biology, medicine, agriculture, remote sensing and industrial …             Facile preparation of multifunctional superparamagnetic PHBV microspheres containing SPIONs for biomedical applications ▶     Wei Li, Jan Zaloga, Yaping Ding et al.     The promising potential of magnetic polymer microspheres in various biomedical applications has been frequently reported. However, the surface hydrophilicity of superparamagnetic …             A Flexible and Wearable Human Stress Monitoring Patch ▶     Sunghyun Yoon, Jai Kyoung Sim, Young-Ho Cho     A human stress monitoring patch integrates three sensors of skin temperature, skin conductance, and pulsewave in the size of stamp (25 mm × 15 mm × 72 μm) in order to enhance …             Suppression of spin-exciton state in hole overdoped iron-based superconductors ▶     C. H. Lee, K. Kihou, J. T. Park et al.     The mechanism of Cooper pair formation in iron-based superconductors remains a controversial topic. The main question is whether spin or orbital fluctuations are responsible for …             The standard map: From Boltzmann-Gibbs statistics to Tsallis statistics ▶     Ugur Tirnakli, Ernesto P. Borges     As well known, Boltzmann-Gibbs statistics is the correct way of thermostatistically approaching ergodic systems. On the other hand, nontrivial ergodicity breakdown and strong …             Strengthened PAN-based carbon fibers obtained by slow heating rate carbonization ▶     Min-A Kim, Dawon Jang, Syogo Tejima et al.     Large efforts have been made over the last 40 years to increase the mechanical strength of polyacrylonitrile (PAN)-based carbon fibers (CFs) using a variety of chemical or …             Integrating Epitaxial-Like Pb(Zr,Ti)O3 Thin-Film into Silicon for Next-Generation Ferroelectric Field-Effect Transistor ▶     Jae Hyo Park, Hyung Yoon Kim, Gil Su Jang et al.     The development of ferroelectric random-access memory (FeRAM) technology with control of grain boundaries would result in a breakthrough for new nonvolatile memory devices. The …             Using Jupiter’s gravitational field to probe the Jovian convective dynamo ▶     Dali Kong, Keke Zhang, Gerald Schubert     Convective motion in the deep metallic hydrogen region of Jupiter is believed to generate its magnetic field, the strongest in the solar system. The amplitude, structure and …             Structural revisions of small molecules reported to cross-link G-quadruplex DNA in vivo reveal a repetitive assignment error in the literature ▶     Paul E. Reyes-Gutiérrez, Tomáš Kapal, Blanka Klepetářová et al.     Two molecules of mistaken identity are addressed. Uncovering these assignment errors led us to formulate more general guidelines about additional misassignments in cases of …             Irradiation deformation near different atomic grain boundaries in α-Zr: An investigation of thermodynamics and kinetics of point defects ▶     A. Arjhangmehr, S. A. H. Feghhi     Understanding radiation performance of nanocrystalline Zr-based alloys is essential to develop internal components and external cladding materials with self-healing capabilities …             Modelling of the frictional behaviour of the snake skin covered by anisotropic surface nanostructures ▶     Alexander E. Filippov, Stanislav N. Gorb     Previous experimental data clearly revealed anisotropic friction on the ventral scale surface of snakes. However, it is known that frictional properties of the ventral surface of …             Leaders should not be conformists in evolutionary social dilemmas ▶     Attila Szolnoki, Matjaž Perc     The most common assumption in evolutionary game theory is that players should adopt a strategy that warrants the highest payoff. However, recent studies indicate that the spatial …             Human sperm rheotaxis: a passive physical process ▶     Zhuoran Zhang, Jun Liu, Jim Meriano et al.     A long-standing question in natural reproduction is how mammalian sperm navigate inside female reproductive tract and finally reach the egg cell, or oocyte. Recently, fluid flow …             The Periosteal Bone Surface is Less Mechano-Responsive than the Endocortical ▶     Annette I. Birkhold, Hajar Razi, Georg N. Duda et al.     Dynamic processes modify bone micro-structure to adapt to external loading and avoid mechanical failure. Age-related cortical bone loss is thought to occur because of increased …             Quantification of ethanol in plasma by electrochemical detection with an unmodified screen printed carbon electrode ▶     Gang Tian, Xiao-Qing Zhang, Ming-Song Zhu et al.     Simple, rapid and accurate detection of ethanol concentration in blood is very crucial in the diagnosis and management of potential acute ethanol intoxication patients. A novel …             From morphology to biochemical state – intravital multiphoton fluorescence lifetime imaging of inflamed human skin ▶     Volker Huck, Christian Gorzelanny, Kai Thomas et al.     The application of multiphoton microscopy in the field of biomedical research and advanced diagnostics promises unique insights into the pathophysiology of inflammatory skin …             c-axis preferential orientation of hydroxyapatite accounts for the high wear resistance of the teeth of black carp (Mylopharyngodon piceus) ▶     Jimin Fu, Chong He, Biao Xia et al.     Biological armors such as mollusk shells have long been recognized and studied for their values in inspiring novel designs of engineering materials with higher toughness and …             Structural and electronic properties of graphene nanoflakes on Au(111) and Ag(111) ▶     Julia Tesch, Philipp Leicht, Felix Blumenschein et al.     We investigate the electronic properties of graphene nanoflakes on Ag(111) and Au(111) surfaces by means of scanning tunneling microscopy and spectroscopy as well as density …             Coulomb-corrected molecular orbital tomography of nitrogen ▶     Chunyang Zhai, Lixin He, Pengfei Lan et al.     High-order harmonic generation (HHG) from aligned molecules has provided a promising way to probe the molecular orbital with an Ångström resolution. This method, usually called …             Unraveling the formation mechanism of graphitic nitrogen-doping in thermally treated graphene with ammonia ▶     Xiao-Fei Li, Ke-Yan Lian, Lingling Liu et al.     Nitrogen-doped graphene (N-graphene) has attractive properties that has been widely studied over the years. However, its possible formation process still remains unclear. Here, …             Emergent geometries and nonlinear-wave dynamics in photon fluids ▶     F. Marino, C. Maitland, D. Vocke et al.     Nonlinear waves in defocusing media are investigated in the framework of the hydrodynamic description of light as a photon fluid. The observations are interpreted in terms of an …             Localised Ag+ vibrations at the origin of ultralow thermal conductivity in layered thermoelectric AgCrSe2 ▶     F. Damay, S. Petit, S. Rols et al.     In materials science, the substructure approach consists in imagining complex materials in which a particular property is associated with a distinct structural feature, so as to …             Integrated dual-mode 3 dB power coupler based on tapered directional coupler ▶     Yuchan Luo, Yu Yu, Mengyuan Ye et al.     A dual-mode 3 dB power coupler based on silicon-on-insulator platform for mode division multiplexing system is proposed and demonstrated. The device, which consists of a tapered …             Solitonic dynamics and excitations of the nonlinear Schrödinger equation with third-order dispersion in non-Hermitian PT-symmetric potentials ▶     Yong Chen, Zhenya Yan     Solitons are of the important significant in many fields of nonlinear science such as nonlinear optics, Bose-Einstein condensates, plamas physics, biology, fluid mechanics, and …             Selector-free resistive switching memory cell based on BiFeO3 nano-island showing high resistance ratio and nonlinearity factor ▶     Ji Hoon Jeon, Ho-Young Joo, Young-Min Kim et al.     Highly nonlinear bistable current-voltage (I–V) characteristics are necessary in order to realize high density resistive random access memory (ReRAM) devices that are compatible …             Subharmonic instability of a self-organized granular jet ▶     J. E. Kollmer, T. Pöschel     Downhill flows of granular matter colliding in the lowest point of a valley, may induce a self-organized jet. By means of a quasi two-dimensional experiment where fine grained …             Paper-based upconversion fluorescence resonance energy transfer biosensor for sensitive detection of multiple cancer biomarkers ▶     Sai Xu, Biao Dong, Donglei Zhou et al.     A paper-based upconversion fluorescence resonance energy transfer assay device is proposed for sensitive detection of CEA. The device is fabricated on a normal filter paper with …             Non-hermitian quantum thermodynamics ▶     Bartłomiej Gardas, Sebastian Deffner, Avadh Saxena     Thermodynamics is the phenomenological theory of heat and work. Here we analyze to what extent quantum thermodynamic relations are immune to the underlying mathematical …             An in-situ gas chromatography investigation into the suppression of oxygen gas evolution by coated amorphous cobalt-phosphate nanoparticles on oxide electrode ▶     Jihyeon Gim, Jinju Song, Sungjin Kim et al.     The real time detection of quantitative oxygen release from the cathode is performed by in-situ Gas Chromatography as a tool to not only determine the amount of oxygen release …             Multi-spectral Metasurface for Different Functional Control of Reflection Waves ▶     Cheng Huang, Wenbo Pan, Xiaoliang Ma et al.     Metasurface have recently generated much interest due to its strong manipulation of electromagnetic wave and its easy fabrication compared to bulky metamaterial. Here, we propose …             Omnidirectional optical attractor in structured gap-surface plasmon waveguide ▶     Chong Sheng, Hui Liu, Shining Zhu et al.     An optical attractor based on a simple and easy to fabricate structured metal-dielectric-metal (SMDM) waveguide is proposed. The structured waveguide has a variable thickness in …             Evolution of photoinduced effects in phase-separated Sm0.5Sr0.5Mn1−yCryO3 thin films ▶     Xiaojie Chai, Hui Xing, Kexin Jin     Systematic study on electrical transport properties has been performed in Sm0.5Sr0.5Mn1−yCryO3 thin films illuminated by the light. An evolution of persistent and transient …             Hybrid metamaterial switching for manipulating chirality based on VO2 phase transition ▶     T. T. Lv, Y. X. Li, H. F. Ma et al.     Polarization manipulations of electromagnetic waves can be obtained by chiral and anisotropic metamaterials routinely, but the dynamic and high-efficiency modulations of chiral …             Velocity distribution in active particles systems ▶     Umberto Marini Bettolo Marconi, Nicoletta Gnan, Matteo Paoluzzi et al.     We derive an analytic expression for the distribution of velocities of multiple interacting active particles which we test by numerical simulations. In clear contrast with …             Electrically tunable terahertz metamaterials with embedded large-area transparent thin-film transistor arrays ▶     Wei-Zong Xu, Fang-Fang Ren, Jiandong Ye et al.     Engineering metamaterials with tunable resonances are of great importance for improving the functionality and flexibility of terahertz (THz) systems. An ongoing challenge in THz …             The degradation potential of PET bottles in the marine environment: An ATR-FTIR based approach ▶     C. Ioakeimidis, K. N. Fotopoulou, H. K. Karapanagioti et al.     The dominance and persistence of plastic debris in the marine environment are well documented. No information exists in respect to their lifespan in the marine environment. …             Enhanced all-optical modulation in a graphene-coated fibre with low insertion loss ▶     Haojie Zhang, Noel Healy, Li Shen et al.     Graphene is a highly versatile two-dimensional material platform that offers exceptional optical and electrical properties. Of these, its dynamic conductivity and low effective …             Low Energy Atomic Models Suggesting a Pilus Structure that could Account for Electrical Conductivity of Geobacter sulfurreducens Pili ▶     Ke Xiao, Nikhil S. Malvankar, Chuanjun Shu et al.     The metallic-like electrical conductivity of Geobacter sulfurreducens pili has been documented with multiple lines of experimental evidence, but there is only a rudimentary …             Electrochemical fecal pellet sensor for simultaneous real-time ex vivo detection of colonic serotonin signalling and motility ▶     Rachel Morris, Aidan Fagan-Murphy, Sarah J. MacEachern et al.     Various investigations have focused on understanding the relationship between mucosal serotonin (5-HT) and colonic motility, however contradictory studies have questioned the …             Stimulus-dependent synchronization in delayed-coupled neuronal networks ▶     Zahra G. Esfahani, Leonardo L. Gollo, Alireza Valizadeh     Time delay is a general feature of all interactions. Although the effects of delayed interaction are often neglected when the intrinsic dynamics is much slower than the coupling …             Clinical Evaluation of a Fully-automatic Segmentation Method for Longitudinal Brain Tumor Volumetry ▶     Raphael Meier, Urspeter Knecht, Tina Loosli et al.     Information about the size of a tumor and its temporal evolution is needed for diagnosis as well as treatment of brain tumor patients. 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