Materials Literature
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We present experimental data corresponding to a two-dimensional dense granular flow, namely, the gravity-driven discharge of grains from a small opening in a silo. We study the local velocity field at the scale of single grains at different places with the help of particle-tracking techniques. From these data, the vel…
Near ultraviolet-sensitive separate absorption and multiplication avalanche photodiodes with GaN/SiC epitaxial layers grown on SiC substrate were fabricated. Dark current < 1 pA at 90% breakdown voltage, maximum multiplication gain of ∼105, and responsivity exceeding 4.2 A/W at 365 nm were achieved.
Alchemical free energy calculations involving the removal or insertion of atoms into condensed phase systems generally make use of soft-core scaling of nonbonded interactions, designed to circumvent numerical instabilities that arise from weakly interacting "hard" atoms in close proximity. Current methods model soft-c…
Recognition and sensing of anions in aqueous media have been of considerable interest while remaining a challenging task up to date. In this document, we wish to present a simple yet sensitive method to detect inorganic anions by colorimetry based on the citrate-stabilized core/shell Cu@Ag nanoparticle (NP). It was fo…
Co-crystals 1a – 1d and 1d′ have been prepared by slow evaporation of the solutions of mixtures of 1,3-adamantanedicarboxylic acid ( 1 ) and 1,3-di(pyridin-4-yl)propane ( a ), E -1,2-di(pyridine-4yl)diazene ( b ), ( E )-2,2′-(ethene-1,2-diyl)dipyridine 1-oxide ( c ), and 1,7-phenanthroline ( d ), as the case may be. T…
Two boron-contained fluorescent sensors, 1 and 2, based on coumarin have been prepared. The fluorescence response of the two systems was investigated with addition of saccharide and mercury ions. Sensor 2 behaves as a bifunctional fluorescent switch with chemical inputs of D-fructose and mercury ions.
This paper presents a multiphase equation of state for cerium, which includes the $\ensuremath{\gamma}$, $\ensuremath{\alpha}$, $\ensuremath{\varepsilon}$, and liquid phases. The $\ensuremath{\alpha}$ and $\ensuremath{\gamma}$ phases are described with the Aptekar-Ponyatovsky model for pseudobinary solutions, while th…
Abstract Three novel multi‐ligand coordination compounds, namely [Ni(IMI)6](ClO4)2 (1), [Ni(IMI)6](NO3)2 (2), and [Ni(IMI)6](CO3)·5H2O (3) were synthesized and characterized by elemental analysis and FT‐IR spectroscopy. The crystal structures were determined by X‐ray single crystal diffraction. The title compounds cry…
This study achieved controlling the positions of spontaneous growth of tin whiskers. We surmounted the unpredictable growing nature of such whiskers and performed accurately quantitative analyses of the growth kinetics and yielded precise measurement of the growth rate. Furthermore, using synchrotron radiation x-ray,…
This paper investigates the improvement of resistive switching trends after post-forming negative bias stress treatment of a Pt/Yb2O3/TiN device that has undergone positive bias forming process for activation. After the treatment, characteristics of the conductive filament, such as the temperature dependence of resist…
A small molecule based on bisphenylethynyl amide meta linked to 2,6-pyridine can induce cyclodextrin (CD) aggregation through a possible 1:3 guest–host motif. Most of the small molecules induce CD nanotubular bundles principally through 1:2 guest–host unit capsules and aggregate through hydrogen bonding among the hydr…
The authors investigate the templated crystallization of thin-body Ge fin structures with high aspect ratios. Experimental variables include fin thickness and thermal treatments, with fin structures oriented in the 〈110〉 direction. Transmission electron microscopy determined that various crystal defects form during cr…
OBJECTIVES: To evaluate the compatibility between aged siloranes and methacrylate-based composites by simulating a common repair-technique. METHODS: Twenty substrates were constructed using silorane (Filtek Silorane, 3M ESPE) and methacrylate composites (Filtek Supreme XT, 3M ESPE). Substrates were aged in 0.9% NaCl s…
Abstract Small‐angle neutron scattering with contrast variation was used to measure the interfacial surface area in a composite high explosive formulated with a deuterated binder. Continuing our work on the effect of varying the pressing intensity on void and binder size distribution, the effect of pressing intensity…
We investigated the effect of helium and nitrogen pressures on the dynamics of molecular species formation during laser ablation of carbon. For producing plasmas, planar carbon targets were irradiated with 1064 nm, 6 ns pulses from an Nd:yttrium aluminum garnet laser. The emission from excited C2 and CN molecules was…
We report enhanced reflection displayed by arrays of silicon based inverted nanocones. Theoretical studies suggest that such arrays display enhanced reflection and photonic band gaps within the optical and near infrared regions. Measured results show three to four fold enhancement in reflection and agree well with cal…
The one-pot synthesis of hierarchically structured anatase TiO 2 nanosheets-based microspheres with controlled sizes is successfully achieved through the hydrolysis of titanium tetrafluoride in polyol medium with heating at 170 °C. Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), high-reso…
Abstract A series of poly(2‐(dimethylamino)ethyl methacrylate‐ran‐9‐(4‐vinylbenzyl)‐9H‐carbazole) (poly(DMAEMA‐ran‐VBK)) random copolymers, with VBK molar feed compositions fVBK,0 = 0.02–0.09, were synthesized using 10 mol % [tert‐butyl[1‐(diethoxyphosphoryl)‐2,2‐dimethylpropyl]amino] nitroxide (SG1) relative to 2‐([t…
We report the experimental characterization of high-responsivity plasmonics-based GaAs metal-semiconductor-metal photodetector (MSM-PD) employing metal nano-gratings. Both the geometry and light absorption near the designed wavelength are theoretically and experimentally investigated. The measured photocurrent enhance…
There has been much interest in recent years in the use of manganese for the self-formation of diffusion barriers to prevent the electromigration of copper interconnects into the underlying silicon substrate during microelectronic fabrication. However, the films resulting from the deposition of manganese on silicon wa…