Materials Literature
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We investigate solid-liquid transitions in NaCl at high pressures using molecular dynamics simulations, including the melting curve and superheating/supercooling as well as solid-solid and liquid-liquid transitions. The first-order B1-B2 (NaCl-CsCl type) transition in solid is observed at high pressures besides contin…
For both hydrophilic and hydrophobic surface preparation, using the combination of advanced surface treatment and tuned annealing process, void free Si/Si direct bonding have been successfully obtained. The pre-bonding procedure involves only low temperature (<500{degree sign}C) treatment in order to be compatible…
Durch das Anbinden eines hydrophoben Peptids an Polybutadien-block-polyethylenoxid verschieben sich die Morphologien des Systems in Wasser zu solchen mit geringerer Krümmung – von kugelförmigen Micellen zu wurmartigen Micellen und Vesikeln (siehe Bild; PBD=Polybutadien, PEO=Polyethylenoxid, wEO: Gewichtsanteil des hyd…
Oligodeoxynucleotide nanostructure formation in the presence of polypropyleneimine dendrimers and their uptake in breast cancer cells, Chen, Alex M, Santhakumaran, Latha M, Nair, Sandhya K, Amenta, Peter S, Thomas, Thresia, He, Huixin, Thomas, T J
We show that densification of silica glass at ambient pressure as observed in irradiation experiments can be attributed to defect generation and subsequent structure relaxation. In our molecular dynamics simulations, defects are created by randomly removing atoms, by displacing atoms from their nominal positions in an…
In this paper we will present the fabrication and properties of reactively co-sputtered Al2O3 layers, being a very promising host material for active integrated optics applications such as rare- earth ion doped laser devices. The process optimization towards a reactive co-sputtering process, which resulted in stable,…
Creep deformation tests at room temperature were carried out on nanocrystalline $(n\text{\ensuremath{-}})$ Au prepared by the gas-deposition method, where the mean primary grain size was $\ensuremath{\sim}20\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ but most of the primary grains formed clusters with a mean size of $\ens…
In the nanometer device era, surface morphology of atomic level becomes one of critical issues for device performance. The surface morphology of atomic level was evaluated in various wafer types and surface indexes. It was found that a hydrogen anneal wafer has the largest terrace comparing to other wafers. It is poss…
The magnetocaloric effect (MCE) of half-metallic CrO 2 particles has been studied with respect to particle size on the nanometre scale. Results from superconducting quantum interference device (SQUID) measurements indicate that acicular CrO 2 particles with a length of 400 nm yield a large magnetic entropy change Δ S…
A mathematical model for treating multicomponent equilibrium in polymer networks is developed and tested against experimental data. Equations and numerical solution procedures for treating the full equilibrium problem of a binary mixed solvent in contact with a cross-linked polymeric network are provided. Case studies…
We have studied the influence of plasticization on the microscopic dynamics of a glass-forming polymer. For this purpose we studied polyvinylchloride (PVC) with and without the commercially used plasticizer dioctylphthalate (DOP). We used dielectric spectroscopy and inelastic neutron scattering employing the neutron s…
Ligand-stabilized nanocrystals (NCs) were strongly bound to the nanotube surfaces by simple van der Waals forces. Linear arrays of CdSe and InP quantum dots were formed by self-assembly using the grooves in bundles of carbon single-walled nanotubes (SWNTs) as a one-dimensional template. A simple geometrical model expl…
The formation of light-emitting porous silicon (PSi) in a HF solution by adding an oxidizing agent KIO 3 is presented. The PSi layers are formed by photoetching under Xe lamp illumination. The use of a Xe lamp enables the formation of large PSi layers on n-Si substrates. Yellow photoluminescence peaking at ∼2.0 eV is…
The effect of alkali metal (M) chloride or triflate supporting electrolytes (0.1-1.0 mol L(-1)) on the midpoint potential E(m) of the aqueous AlW12O40(5-/6-) couple in cyclic voltammetry, after correction (E(corr)) for liquid junction potentials, can be represented in terms of ionic strength according to the extended…
Cross-linked poly(vinyl alcohol) (PVA) was blended with 10, 20, 33, and 50 wt. % of coconut shell (CCS) powder by a solution casting process. The solution-casted PVA/CCS powder films were dried and characterized for physico-mechanical properties, such as tensile, tear, and burst strengths, and density. The influence o…
A double-walled carbon nanotube (CNT) oscillator encapsulating a copper nanowire has been investigated using molecular dynamics simulations. Our simulation results show that the excess energy due to the interactions between the copper nanowire and the outer CNT were around 1% of the excess of van der Waals energy betw…
The design of novel, functionalized semiquinone (SQ) ligands which combine structural rigidity and electron-withdrawing, electron-donating, and electroneutral substituents enables investigation of multiple structure-property relationships and building blocks for new materials, including components of sensors, switches…
Diluted magnetic semiconductor Zn 1− x Co x O ( x ≤0.11) nanowires with average diameter of ∼40 nm were prepared by thermal evaporation, followed by high-energy Co ion implantation. Bombardment by Co ions produced a good number of structural defects (stacking faults and orientational variations) in the nanowires. The…
Abstract Narrow‐disperse or monodisperse poly{[poly(ethylene glycol) methyl ether acrylate]‐ co ‐(acrylic acid)} (poly(PEGMA‐ co ‐AA)) microspheres were prepared by distillation precipitation polymerization with ethyleneglycol dimethacrylate (EGDMA) as crosslinker with 2,2′‐azobisisobutyronitrile as initiator in neat…
We herein report a facile one-pot synthesis, stabilization, redispersion and Cu–S interaction of L-cysteine and dodecanethiol (DDT) protected copper organosol in toluene from precursor copper stearate using sodium borohydride in toluene under a nitrogen atmosphere. Surface modification of the synthesized copper organo…