Materials Literature
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The dynamics of simple molecular systems showing glassy properties has been explored by dielectric spectroscopy and nuclear quadrupole resonance (NQR) on the halogenomethanes CBr2Cl2 and CBrCl3 in their low-temperature monoclinic phases. The dielectric spectra display features which correspond to alpha- and beta-relax…
A novel, integrated, fast, and inexpensive process for the preparation of dense Ba (1− x ) Eu x Al 2 Si 2 O 8 thin ceramic specimens for damage sensor applications is reported. The processing approach involves a combination of combustion synthesis for the preparation of the powders and spark plasma sintering (SPS) for…
Abstract The effect of the force‐field parameters on the morphology and charge dynamics is assessed for amorphous films of tris(8‐hydroxyquinolinato)aluminium. Two force‐fields are used for non‐bonded parameters, OPLS and Williams 99, whereas bonded interactions are obtained from first‐principles calculations. By comp…
In this work, we combined synthesis of Au nanorods (AuNRs) and Au−Ag core−shell nanorod-like structures, of narrow size distribution in all dimensions and for a broad range of aspect ratios, with computational prediction of the localized surface plasmon resonance (LSPRs), in order to gain a better understanding of the…
Yellow‐emitting α‐sialon:Eu 2+ phosphors have been reported as interesting down‐conversion luminescent materials in white LEDs. In this work, the thermal quenching of α‐sialon:Eu 2+ with the compositions of M val+ ( m /val+) Si 12−( m + n ) Al m + n O n N 16− n (M=Ca, Mg, Lu) is studied by investigating the effects of…
The structure and electronic properties of polyhedral oligomeric silsesquioxane (POSS) cages functionalized with different organic groups have been studied using density functional theory and time-dependent density functional theory calculations. Accordingly, the POSS-T8 cage is quite rigid upon functionalization and…
We develop two new amphiphilic molecules that are shown to act as efficient surfactants for carbon nanotubes in nonpolar organic solvents. The active conjugated groups, which are highly attracted to the graphene nanotube surface, are based on pyrene and porphyrin. We show that relatively short (C18) carbon tails are i…
Moving forward materials-based regenerative medicine faces many challenges to ensure clinical success. Many of these challenges lie at the interface of molecular/structural biology and materials science. This review discusses this issue from a biological and material view-point, highlighting key biological processes a…
Time-resolved optical reflectivity was used to study the kinetics in the early stages of vertically aligned carbon nanotube array growth from a molecular beam of acetylene. The molecular beam environment was used to suppress gas phase reaction pathways and limit the growth to surface reactions specific to the molecula…
Lead sulfide (PbS) thin films were deposited by atomic layer deposition (ALD) for the fabrication of quantum well structures. A linear growth rate of 0.9 Å/cycle and pulse saturation behavior characteristic of ALD were observed. The stoichiometry of the films was confirmed using X-ray photoelectron spectroscopy (XPS)…
The rapid exhaustion of fossil fuel reserves and the adverse effects of climate change have attracted global attention and pose serious threats to mankind. The emergence of new energy technologies based on new materials discovery is crucial if the world is to arrest the adverse effects of climate change and secure the…
The feasibility of using surfactant vesicles as soft templates for the peroxidase-triggered polymerization of aniline was investigated. It was found that mixed anionic vesicles (diameter approximately 80 nm) composed of sodium dodecylbenzenesulfonate (SDBS) and decanoic acid (1:1, molar ratio) are promising templates.…
Grand canonical Monte Carlo simulations are used to study the adsorption of benzene on atomistic silica surfaces and in cylindrical nanopores. The effect of temperature and surface chemistry is addressed by studying the adsorption of benzene at 293 and 323 K on both fully and partially hydroxylated silica surfaces or…
Cathodoluminescence real-color imaging and spectroscopy were employed to study the properties of Ga(2)O(3) nanowires grown with different Sn/Ga ratios. The structures grown under Sn-rich conditions show large spectral emission variation, ranging from blue to red, with a green transition zone. Spectral emission changes…
Strontium hydroxyapatite (Sr(5)(PO(4))(3)OH, SrHAp) microspheres with 3D architectures have been successfully prepared through a efficient and facile solvothermal process. The experimental results indicate that the SrHAP microspheres are composed of a large amount of nanosheets, which are assembled in a radial form fr…
We report quantum-oscillation measurements that enable the direct observation of the Fermi surface of the low-temperature ground state of ${\text{BaFe}}_{2}{\text{As}}_{2}$. From these measurements we characterize the low-energy excitations, revealing that the Fermi surface is reconstructed in the antiferromagnetic st…
The monomeric iron(II) amido derivatives Fe{N(H)Ar*}(2) (1), Ar* = C(6)H(3)-2,6-(C(6)H(2)-2,4,6-Pr(i)(3))(2), and Fe{N(H)Ar(#)}(2) (2), Ar(#) = C(6)H(3)-2,6-(C(6)H(2)-2,4,6-Me(3))(2), were synthesized and studied in order to determine the effects of geometric changes on their unusual magnetic properties. The compounds…
High-densely packed and uniformly distributed molybdenum oxide nanorods have been grown onto glass substrates by RF magnetron sputtering and subsequent annealing in an oxygen atmosphere. A two-step growth mechanism (sputtering redeposition and enhanced rearrangement during annealing) for the formation of MoO3 nanorods…
Hepta(3,3,3-trifluoropropyl) polyhedral oligomeric silsesquioxane-capped poly(ethylene oxide) telechelics (POSS-capped PEO) were synthesized via click chemistry. The POSS-capped PEO amphiphilic telechelics were incorporated into cross-linked poly(N-isopropylacrylamide) (PNIPAAm) to form the structure of physical inter…
We report a general well-controlled synthetic strategy to achieve meticulous control of metallic shell growth at the single monolayer level with versatile core nanoparticles, thus facilitating investigation of their scope for numerous applications. The central component of this strategy is to introduce an intermediate…