Materials Literature
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Heterointerfaces of correlated electron oxides provide a good laboratory to explore novel electronic states induced by the coupling among spin, charge, and orbital degrees of freedom. For the detail understanding of the complex interface states, it is indispensable to elucidate the interface band profiles of correlate…
The study of crystal growth using molecular dynamics is very difficult due to the slow rate of growth and the complex intermolecular interactions involved. In order to perform molecular dynamics simulations of crystal growth from aqueous solution accurately, both interactions within the crystal and interactions betwee…
In dilute aqueous solution at pH = 4.3 in the presence of 0.1 M sodium dihydrogen phosphate, AOT (bis-(2-ethylhexyl)sulfosuccinate) was found to form vesicles. The average diameter of the vesicles was adjusted to about 70 nm by polycarbonate membrane extrusion. The vesicles were applied as chemical structure-controlli…
Results from first principles calculations present a rather clear atomic and electronic level picture of the interaction of single noble metals (NM: Pd, Pt and Rh) and the corresponding NM(4) clusters with a CeO(2)(111) surface. The most preferable adsorption sites for both the Pd and Pt adatoms are the surface O-brid…
We investigated the suitability of dithiocarbamate (DTC) species as capping ligands for colloidal CdSe-ZnS quantum dots (QDs). DTC ligands are generated by reacting carbon disulfide (CS(2)) with primary or secondary amines on appropriate precursor molecules. A biphasic exchange procedure efficiently replaces the exist…
A systematic design of practicable media suitable for rewritable, ultrahigh density (>1Tbit/sq.in.), high data rate (>1Mbit/s/tip) scanning-probe phase-change memories is presented. The basic design requirements were met by a Si/TiN/Ge$_2$Sb$_2$Te$_5$(GST)/diamond-like carbon structure, with properly tailored electric…
Single-crystal aluminum-gallium oxide films have been grown by molecular beam epitaxy in the corundum phase. Films of the (Al(1-x)Ga(x))(2)O(3) alloys doped with neodymium have favorable properties for solid-state waveguide lasers, including a high-thermal-conductivity sapphire substrate and a dominant emission peak i…
Abstract This study examined the effects of the incorporation of carbon fiber (CF) and silicon carbide powder (SCP) into a high temperature vulcanized (HTV) silicone rubber, poly(dimethylsiloxane) (PDMS) containing vinyl groups on the ablation properties using an oxy‐acetylene torch test. The ablation test results sho…
We have synthesized several new push-pull oligothiophenes based on the boron dipyrromethene (BODIPY) moiety as the electron acceptor and the more well-known oligothiophenes substituted with N,N-dialkylamino functions to enhance their electron-donor ability. A complete characterization of the electronic properties has…
One distinct class of band structures, spin gapless semiconductors in which both electrons and holes can be fully spin polarized, has been proposed recently [X. L. Wang, Phys. Rev. Lett. 100, 156404 (2008)]. Exotic spin-related phenomena and potential applications were predicted for those semiconductors. In the presen…
Spider attachment disc silk fibers are spun into a viscous liquid that rapidly solidifies, gluing dragline silk fibers to substrates for locomotion or web construction. Here we report the identification and artificial spinning of a novel attachment disc glue silk fibroin, Pyriform Spidroin 2 (PySp2), from the golden o…
Endothelialization and antithrombogenicity are two key issues in stent implantation. The layer-by-layer (LbL) deposition of anticoagulant heparin and cell compatible collagen was explored to develop a multilayered coating with synergic property of antithrombogenicity and fast endothelialization. The quartz crystal mic…
The world today is facing increasing energy demands and a simultaneous demand for cleaner and more environmentally friendly energy technologies. Hydrogen is recognized as a possible renewable energy carrier, but its large-scale utilization is mainly hampered by insufficient hydrogen storage capabilities. In this scena…
The future use of single-molecule magnets in applications will require the ability to control and manipulate the spin state and magnetization of the magnets by external means. There are different approaches to this control, one being the modification of the magnets by adsorption of small ligand molecules. In this pape…
Generation of bioenergy, new functional polymers, or chemicals and biomaterials from hemicelluloses are important uses for biomass. In this paper, a novel functional biopolymer with carbon-carbon double bond and carboxyl groups was prepared by a homogeneous esterification of xylan-rich hemicelluloses (XH) with maleic…
Aging to the equilibrium liquid state of organic glasses is studied. The glasses were prepared by cooling the liquid to temperatures just below the glass transition. Aging following a temperature jump was studied by measuring the dielectric loss at a fixed frequency using a microregulator in which temperature is contr…
By employing an idealized model of a polymer network and filler, we have investigated the stress-strain behavior by tuning the filler loading and polymer-filler interaction in a broad range. The simulated results indicate that there actually exists an optimal filler volume fraction (between 23% and 32%) for elastomer…
Chiral memory at the supramolecular level is obtained via a new approach using chiral Zn porphrins and achiral Cu porphyrins. In a "sergeant-and-soldiers" experiment, the Zn "sergeant" transfers its own chirality to Cu "soldiers" and, after chiral amplification, the "sergeant" is removed from the coaggregates by axial…
Surface-enhanced Raman scattering (SERS) spectra from molecules adsorbed on the surface of vertically aligned gold nanorod arrays exhibit a variation in enhancement factor (EF) as a function of excitation wavelength that displays little correlation with the elastic optical properties of the surface. The key to underst…
We have developed a facile, fast, and scalable microwave irradiation method for the synthesis of graphene and CdSe nanocrystals of controlled size, shape, and crystalline structure dispersed on graphene sheets. The reduction of graphite oxide into graphene takes place in DMSO within 2 min of microwave irradiation as o…