The in-situ TEM Study of Microstructure Alteration of MoS2 under Carburization
Jian Chen, Qiang Wei, Jinwen Chen; The in-situ TEM Study of Microstructure Alteration of MoS2 under Carburization, Microscopy and Microanalysis, Volume 20,
Materials Literature
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Difficulty with in situ reduction of graphene oxide in epoxy composite: A potential solution
Graphene Oxide (GO) was prepared and dispersed in DER 332 epoxy. Preliminary work using Broadband Dielectric Spectroscopy (BDS) has shown that the epoxy and its composite could start to degrade at temperature as low as 120°C. Thermogravimetric analysis measurement indicated a slight mass loss difference at 150°C betwe…
Surface layer analysis of Si sphere by XRF and XPS
To reduce the uncertainty of the Avogadro constant for the new definition of the kilogram, the surface analysis of the Si sphere produced for the accurate determination of the Avogadro constant is indispensable. In this work, we conducted the surface quantitative analysis to find out the metallic contaminations of a S…
Characterization of a Layered Lithium Manganese-rich Oxide Cathode Material via Scanning Transmission Electron Microscopy
Aaron C Johnston-Peck, Leonid A Bendersky, Andrew A Herzing; Characterization of a Layered Lithium Manganese-rich Oxide Cathode Material via Scanning Trans
Narrow line-width photoluminescence spectrum of GaAs nanodisks fabricated using bio-template ultimate top-down processes
Quantum dot optoelectronic devices are very attractive for their low power consumption, temperature stability, and high-speed modulation. We developed an ultimate defect-free, top-down fabrication process for sub-20-nm diameter GaAs quantum nanodisks (NDs) by using a combination of a bio-template and neutral beam etch…
Atom-by-Atom STEM Investigation of Defect Engineering in Graphene
QM Ramasse, DM Kepapstoglou, FS Hage, T Susi, J Kotakoski, C Mangler, P Ayala, J Meyer, JA Hinks, S Donnelly, R Zan, CT Pan, SJ Haigh, U Bangert; Atom-by-A
7th order sub-millimeter wave frequency multiplier based on graphene implemented using a microstrip transition between two rectangular waveguides
In this work, a 7thorder sub-millimeter wave frequency multiplier for Terahertz applications is presented. The multiplier is based on a microstrip line with a small gap where a graphene film layer is deposited. The multiplication phenomena is reached via the nonlinear behavior of the graphene film using an input signa…
Model-based Iterative Reconstruction for Low-dose Electron Tomography
Singanallur V Venkatakrishnan, Ming-Siao Hsiao, Nick Garvin, Michael A Jackson, Marc De Graef, Jeff Simmons, Charles A Bouman, Lawrence F Drummy; Model-bas
Characterization of Sub-Nanometer Pt Cluster Formation on γ-A12O3 via Ex Situ Reductions using MEMS-Based Heating Technology
Sergio I Sanchez, Lawrence F Allard, Wharton Sinkler, Steven A Bradley; Characterization of Sub-Nanometer Pt Cluster Formation on γ-A12O3 via Ex Situ Reduc
Polymer Blended (Epoxy/Vinylester) Nanocomposites Resistance against Pulling & Sliding Wear Loads
This paper discloses the development and synthesis of polymer blended nanocomposites filled with nanoclay. The hybridization of epoxy is mixed with vinylester resin (VER) to prepare polymer blend filled with organoclay was studied to enhance mechanical properties of epoxy/VER. Clay loading was done in such a way that…
Molecular Dynamics Simulation of Surface Effect on Tensile Deformation of Single Crystalline Copper
Based on molecular dynamics method, the tensile process of single crystalline Cu nanorod and single crystalline Cu bulk were simulated at atomic scale. The motion of atoms, total energy of atom-strain curves and number of dislocation atom-strain curves during the tensile process were acquired. The results shown that s…
Organic millimeterwave fishnet metamaterial structures under oblique incidence of plane electromagnetic waves
A two-layer fishnet metamaterial consists of a dielectric plate cladded on both sides with a conducting fishnet structure. The use of planar organic conductive films or the fishnet structures allows to control the sheet resistance in a wide range. In this work we investigate the propagation of TE and TM waves with obl…
Molecular Imaging of Self-Assembled Rosette Nanotubes by Scanning Tunneling Microscopy
Jae-Young Cho, Liang Shuai, Mounir El-Bakkari, Hicham Fenniri; Molecular Imaging of Self-Assembled Rosette Nanotubes by Scanning Tunneling Microscopy, Micr
Hysteresis and negative differential resistance of the I–V characteristic of a water bridge
It is experimentally demonstrated that the recently discussed properties of the nanopore ion-exchange membranes (hysteresis of the I–V characteristic in solution and negative differential resistance) are not related to the membrane structure. The same effects are observed in a water bridge and tubes filled with water…
Prediction of PAHs Emitted from Marine Diesel Engine Using Artificial Neural Networks Combining Genetic Algorithms
Experimental studies on operating a marine diesel engine to determine the performance map under different working conditions need to consume a lot of money and labor. To solve this problem, a mathematical model based on Artificial Neural Networks (ANNs) combined genetic algorithms (GA) to predicate the performance emi…
Electronic Properties of Au-Doped Narrow Armchair Graphene Nanoribbons: A First Principle Calculations
The centre Au-doped armchair graphene nanoribbons (AGNRs) are investigated using the local density approximation based on density function theory. The charge density, electronic energy band and project density of states of centre Au-doped AGNRs are calculated. Our results indicate the charge density is transferred bet…
Study on the grain size, valence state and electrical properties of bismuth ferrite nanofibers
We report the effect of diameter on the composition, optical, and electronic properties of the BiFeO3(BFO) nanofibers. Bismuth ferrite nanofibers with different diameter (20 to 150nm) have been fabricated by a sol gel based electrospinning route. The effect of quantum confinement has been found to influence the photoc…
Theoretical constraints on reflection and transmission through metasurfaces
We have established a set of useful constraints that should be verified by thin metasurfaces made of perfect electric conductor. Mainly, we found that loci of transmission and reflection coefficients on the complex plane are circumferences. The properties shown in this paper may be useful for limiting the types of rea…
A new class of tunable multi-layer meta-surfaces
A new class of tunable multi-layer meta-surfaces is presented whereby the proposed structures produce very low losses at millimeter wave frequencies. Two configurations are investigated as working examples of the proposed tuning technique. Initially, a tunable high impedance meta-surface is being studied, consisting o…
Batteries: Nano‐Copper‐Assisted Immobilization of Sulfur in High‐Surface‐Area Mesoporous Carbon Cathodes for Room Temperature Na‐S Batteries (Adv. Energy Mater. 12/2014)
In article number 1400226, Shiyou Zheng, Junhe Yang, and co-workers report a novel, in situ, sulfur-reducing and intercalating graphite oxide strategy to fabricate a high S loading graphite-S composite cathode with superior electrochemical performance. The reduced graphite oxide can effectively stabilize the intercala…