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Modelling periodic structure formation on 100Cr6 steel after irradiation with femtosecond-pulsed laser beams

George D. Tsibidis、Alexandros Mimidis、Evangelos Skoulas 等 7 位作者2018-12-06arXiv

We investigate the periodic structure formation upon intense femtosecond pulsed irradiation of chrome steel (100Cr6) for linearly polarised laser beams. The underlying physical mechanism of the laser induced periodic structures is explored, their spatial frequency is calculated and theoretical results are compared wit…

Materials Science

Experimental and theoretical evidences for the ice regime in planar artificial spin ices

R. P. Loreto、F. S. Nascimento、R. S. Gonçalves 等 8 位作者2018-12-06arXiv

In this work, we explore a kind of geometrical effect in the thermodynamics of artificial spin ices (ASI). In general, such artificial materials are athermal. Here, We demonstrate that geometrically driven dynamics in ASI can open up the panorama of exploring distinct ground states and thermally magnetic monopole exci…

Materials Science

Formation of periodic surface structures on dielectrics after irradiation with laser beams of spatially variant polarisation: a comparative study

Antonis Papadopoulos、Evangelos Skoulas、George D. Tsibidis 等 4 位作者2018-12-06arXiv

A comparative study is performed to explore the periodic structure formation upon intense femtosecond pulsed irradiation of dielectrics with radially and azimuthally polarised beams. Laser conditions have been selected appropriately to produce excited carriers with densities below the optical breakdown threshold in or…

Materials ScienceApplied Physicsphysics.optics

Temperature dependence of the Seebeck coefficient of epitaxial $β$-Ga$_2$O$_3$ thin films

Johannes Boy、Martin Handwerg、Robin Ahrling 等 7 位作者2018-12-06arXiv

The temperature dependence of the Seebeck coefficient of homoepitaxial metal organic vapor phase (MOVPE) grown, silicon doped $β$-Ga$_2$O$_3$ thin films was measured relative to aluminum. For room temperature we found the relative Seebeck coefficient of $S_{β\text{-Ga}_2\text{O}_3\text{-Al}}=(-300\pm20)\;μ$V/K. At hig…

Materials Science

Engineering decomposition-resilience and de-coalescence of GaN nanowire ensembles

Swagata Bhunia、Ritam Sarkar、Dhiman Nag 等 7 位作者2018-12-06arXiv

The rapidly increasing interest in nanowires (NWs) of GaN and associated III-Nitrides for (opto-)electronic applications demands immediate addressal of the technological challenges associated with both NW-growth and device processing. Towards this end, we demonstrate in this work an approach to suppress thermal decomp…

Materials Science

Ligand Density and Linker Length are Critical Factors for Multivalent Nanoparticle–Receptor Interactions

Kathrin Abstiens、Manuel Gregoritza、Achim Goepferich2018-12-06ACS Applied Materials & Interfaces

Although there are a large number of studies available for the evaluation of the therapeutic efficacy of targeted polymeric nanoparticles, little is known about the critical attributes that can further influence their uptake into target cells. In this study, varying cRGD ligand densities (0–100% surface functionalizat…

Nanoparticle-Based Drug DeliveryGold and Silver Nanoparticles Synthesis and ApplicationsRNA Interference and Gene Delivery

Controlled Doping of Wafer‐Scale PtSe2 Films for Device Application

Hu Xu、Haima Zhang、Yawen Liu 等 19 位作者2018-12-06Advanced Functional Materials

Abstract Semiconductive transition metal dichalcogenides (TMDs) have been considered as next generation semiconductors, but to date most device investigations are still based on microscale exfoliation with a low yield. Wafer scale growth of TMDs has been reported but effective doping approaches remain challenging due…

Perovskite Materials and Applications2D Materials and ApplicationsAdvanced Memory and Neural Computing

Metal‐Organic Framework Derived Hierarchical Co/C@V2O3 Hollow Spheres as a Thin, Lightweight, and High‐Efficiency Electromagnetic Wave Absorber

Chenhui Zhou、Chen Wu、Dong Liu 等 4 位作者2018-12-06Chemistry - A European Journal

Abstract Developing high‐efficiency electromagnetic (EM) wave absorbing materials with light weight, thin thickness, and wide absorption bandwidth is highly desirable for ever‐developing electronic and telecommunication devices. Herein, hierarchical metal–organic framework (MOF)‐derived Co/C@V2O3 hollow spheres were d…

Metamaterials and Metasurfaces ApplicationsElectromagnetic wave absorption materialsAdvanced Antenna and Metasurface Technologies

Graphene Interdigital Electrodes for Improving Sensitivity in a Ga2O3:Zn Deep-Ultraviolet Photoconductive Detector

Yuqiang Li、Dan Zhang、Richeng Lin 等 6 位作者2018-12-06ACS Applied Materials & Interfaces

Graphene (Gr) has been widely used as a transparent electrode material for photodetectors because of its high conductivity and high transmittance in recent years. However, the current low-efficiency manipulation of Gr has hindered the arraying and practical use of such detectors. We invented a multistep method of accu…

Advanced Photocatalysis TechniquesZnO doping and propertiesGa2O3 and related materials

Silver Nanoparticles Synthesized by Using the Endophytic Bacterium Pantoea ananatis are Promising Antimicrobial Agents against Multidrug Resistant Bacteria

Tahmina Monowar、M. S. Rahman、Subhash Janardhan Bhore 等 5 位作者2018-12-06Molecules

Antibiotic resistance is one of the most important global problems currently confronting the world. Different biomedical applications of silver nanoparticles (AgNPs) have indicated them to be promising antimicrobial agents. In the present study, extracellular extract of an endophytic bacterium, Pantoea ananatis, was u…

Nanoparticles: synthesis and applicationsMedicinal Plants and Neuroprotection

Sonochemical synthesis of a 2D–2D MoSe 2 /graphene nanohybrid electrode material for asymmetric supercapacitors

Balakrishnan Kirubasankar、Shobana Vijayan、Subramania Angaiah2018-12-06Sustainable Energy & Fuels

A sonochemical route is used to prepare a few layers of MoSe 2 and its 2D–2D nanohybrid is prepared with graphene by a solvothermal process. This nanohybrid exhibits a high specific capacitance of 945 F g −1 . An ASC device MoSe 2 /G‖AC is fabricated, which delivers an energy density of 26.6 W h kg −1 and a power dens…

Advancements in Battery MaterialsGraphene research and applicationsSupercapacitor Materials and Fabrication

Synthesis of Superheat-Resistant Polyimides with High Tg and Low Coefficient of Thermal Expansion by Introduction of Strong Intermolecular Interaction

Meng Lian、Xuemin Lü、Qinghua Lu2018-12-06Macromolecules

The development of polyimides (PIs) with a superheat resistance and a high thermal dimensional stability is required urgently for application in the rapidly growing area of flexible-display substrates. Based on an enhanced intermolecular interaction, 2,2′- p -phenylenebis(5-aminobenzimidazole) (DP) that contains bis-b…

Epoxy Resin Curing ProcessesSynthesis and properties of polymersSilicone and Siloxane Chemistry

Advances on Sensors Based on Carbon Nanotubes

Luca Camilli、M. Passacantando2018-12-06Chemosensors

Carbon nanotubes have been attracting considerable interest among material scientists, physicists, chemists, and engineers for almost 30 years. Owing to their high aspect ratio, coupled with remarkable mechanical, electronic, and thermal properties, carbon nanotubes have found application in diverse fields. In this re…

Carbon Nanotubes in CompositesMechanical and Optical ResonatorsNanopore and Nanochannel Transport Studies

Synergistic design of a N, O co-doped honeycomb carbon electrode and an ionogel electrolyte enabling all-solid-state supercapacitors with an ultrahigh energy density

Ziyang Song、Liangchun Li、Dazhang Zhu 等 10 位作者2018-12-06Journal of Materials Chemistry A

Synergistic design of a N, O co-doped honeycomb porous carbon electrode and an ionogel electrolyte is reported to boost the energy output of all-solid-state supercapacitors.

Advancements in Battery MaterialsSupercapacitor Materials and FabricationAdvanced battery technologies research

Poly(lactic acid) Degradation into Methyl Lactate Catalyzed by a Well-Defined Zn(II) Complex

Luis A. Román‐Ramírez、Paul McKeown、Matthew D. Jones 等 4 位作者2018-12-06ACS Catalysis

High Resolution Image Download MS PowerPoint Slide Poly(lactic acid) (PLA) was degraded to methyl lactate (Me-La) by an imino monophenolate Zn( 1 ) 2 catalyst in the presence of tetrahydrofuran, as the solvent, and methanol, as the protic source. As well as solution-based polymerization and degradation, catalyst stabi…

biodegradable polymer synthesis and propertiesMicroplastics and Plastic PollutionCarbon dioxide utilization in catalysis

Robustly Superhydrophobic Conductive Textile for Efficient Electromagnetic Interference Shielding

Li‐Chuan Jia、Guoqiang Zhang、Ling Xu 等 8 位作者2018-12-06ACS Applied Materials & Interfaces

Superhydrophobic electromagnetic interference (EMI) shielding textile (EMIST) is of great significance to the safety and long-term service of all-weather outdoor equipment. However, it is still challenging to achieve long-term durability and stability under external mechanical deformations or other harsh service condi…

Electromagnetic wave absorption materialsAdvanced Antenna and Metasurface TechnologiesDielectric materials and actuators

Exceptional supercapacitor performance from optimized oxidation of graphene-oxide

Zhuangnan Li、Srinivas Gadipelli、Yuchen Yang 等 12 位作者2018-12-06Energy storage materials

Graphene-based materials are highly desirable for supercapacitors, but vary considerably in reported properties despite being prepared by similar procedures; therefore, a clear route to improve the performance is currently lacking. Here, a direct correlation between the initial oxidation of graphene-oxide precursors a…

Advancements in Battery MaterialsSupercapacitor Materials and FabricationAdvanced battery technologies research

Synthesis of C−C Bonded Two‐Dimensional Conjugated Covalent Organic Framework Films by Suzuki Polymerization on a Liquid–Liquid Interface

Zhou Deng、Xianyang Tan、Huimin Wu 等 5 位作者2018-12-06Angewandte Chemie International Edition

Synthesis of free-standing two-dimensional (2D) conjugated covalent organic framework (COF) films linked by C-C bonds is highly desirable. Now a very simple and mild strategy has been developed to synthesize them by Suzuki polymerization on a water-toluene interface in a refrigerator. The versatility of this strategy…

Metal-Organic Frameworks: Synthesis and ApplicationsLuminescence and Fluorescent MaterialsCovalent Organic Framework Applications