Materials Literature
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A nanosized β‐Si 3 N 4 ‐based powder doped with sintering additives of 6 wt% Al 2 O 3 and 8 wt% Y 2 O 3 were sintered by spark plasma sintering at different heating rates. The in situ shrinkage curves were measured to identify the densification mechanism during the rise in temperature. At slower heating rates (50 and…
This paper presents the mechanical polishing effects on the surface domains and crystal structures of relaxor‐based Pb(Zn 1/3 Nb 2/3 )O 3 –PbTiO 3 (PZN–PT) single crystals. In normal sample preparation processes, a “surface deformed layer” composed of distorted crystal structures is produced due to intense compression…
Temperature depedence of the longitudinal interlayer magnetoresistance (MR) of a bulk Dirac cone system, α-(BEDT-TTF) 2 I 3 , is examined. It exhibits a peak related to the crossover from the quantum limit regime with negative MR at low temperatures to the inter-level scattering regime with positive MR at higher tempe…
The weak ferromagnetism reported for graphite and related carbon nanostructures is frequently related to the magnetic coupling of point defects such as vacancies or hydrogen adatoms that interact with only one sublattice in the bipartite graphene lattice.In this paper, using density functional theory calculations we s…
We measured the splay (K11) and bend (K33) elastic constants in the nematic phase of a liquid crystal with T-shaped molecules. We find that the ratio, K33/K11 ≃1 in the entire nematic range except very close to the nematic to Sm-A (SN) transition. Both K33 and K11 show pretransitional divergence as the SN transition i…
We report fabrication method and THz characterization of composite films containing either aligned metallic (tin alloy) microwires or chalcogenide As2Se3 microwires. The microwire arrays are made by stack-and-draw fiber fabrication technique using multi-step co-drawing of low-melting-temperature metals or semiconducto…
A theoretical model for the longitudinal magnetoelectric effect in laminate composites comprising magnetostrictive and piezoelectric phases is presented. The model characterizes the magnetoelectric media in terms of its permeability, permittivity, and magnetoelectric-susceptibility tensor. A distinct approach to model…
Self-assembly of 5,10,15,20-tetra(4-pyridyl)porphyrin (tpp-H2) and 5,10,15,20-tetra(4-pyridyl)porphyrin-M(ii) (M = Ni (tpp-Ni); Zn (tpp-Zn)) tetradentate panels with the dinuclear p-cymene ruthenium clips [Ru2(p-cymene)2(C2O4)Cl2] and [Ru2(p-cymene)2(C6H2O4)Cl2] (C2O4 = oxalato; C6H2O4 = 2,5-dioxydo-1,4-benzoquinonato…
Insulin/alginate (ALG) microcapsules for controllable release and side effect reduction of a glucocorticoid have been fabricated via the layer-by-layer (LbL) assembly technique. Insulin and ALG are deposited alternately onto hydrocortisone (HC) crystals to form a core-shell structure. This insulin/ALG microcapsule can…
A high-density polymer brush of poly( N -isopropylacrylamide) (PNIPA) was precisely prepared following carefully selected procedures, which included selecting the underlying substrate, preparing its surface, and grafting PNIPA on the substrate. As a result, the graft density and the dried thickness of the brush reache…
A general approach to transfer water-soluble nanoparticles with different shapes, sizes, and surface charges into organic solvents, retaining their surface charge properties was developed, and its application in fabrication of hybrid Janus particles with opposite charges in solution was also demonstrated.
Abstract New solar photovoltaic technologies face significant barriers to market entry. First Solar, Inc. is the first thin‐film company to succeed in meeting these challenges, with substantial information about the company's evolution available through its public listing. Learning experience in relation to prices, ma…
In nanotube-based polymeric composite structures it is anticipated that high damping can be achieved by taking advantage of the interfacial friction between the nanotubes and the polymer. The purpose of this paper is to investigate the structural damping characteristics of polymeric composites containing carbon nanotu…
We consider a formation of the Larkin-Ovchinnikov-Fulde-Ferrell (LOFF) phase in a quasi-one-dimensional (Q1D) conductor in a magnetic field, parallel to its conducting chains, where we take into account both the paramagnetic spin splitting and orbital destructive effects against superconductivity. We show that, due to…
New Co(II) members of the family of multifunctional materials of general formula [DAMS](4)[M(2)Co(C(2)O(4))(6)]·2DAMBA·2H(2)O (M(III) = Rh, Fe, Cr; DAMBA = para-dimethylaminobenzaldehyde and [DAMS(+)] = trans-4-(4-dimethylaminostyryl)-1-methylpyridinium) have been isolated and characterized. Such new hybrid mixed meta…
Abstract Dicarboxylic acid‐containing 1,3‐benzoxazine was synthesized and chemically bonded on iron carbonyl particles using a post‐coating method. Novel organic–inorganic hybrid magnetic composites were prepared via the interfacial reaction between magnetic phthalonitrile prepolymers and the benzoxazine functional co…
We demonstrate that a recently developed coating composed of superhydrophobic silicone nanofilaments can be selectively functionalized to yield well defined micron-scale patterns of contrasting wettabilities (superhydrophobic/hydrophilic and amphiphobic/amphiphilic). Nanofilament ablation was performed using a near-ul…
Covalent grafting of poly(ethylene glycol) chains to proteins ("PEGylation") is emerging as an effective technique to increase the in vivo circulation time and efficacy of protein drugs. PEGylated protein adsorption at a variety of solid/aqueous interfaces is a critical aspect of their manufacture, storage, and delive…
We report the application of a versatile diblock copolymer, poly(ethylene oxide)-b-poly(γ-methacryloxypropyl trimethoxysilane) (PEO- b -PγMPS), to prepare nanocrystals such as iron oxide nanoparticles or quantum dots, with either a single core or multi-core cluster, for biomedical applications. This amphiphilic copoly…
Molecular chains of four Co(II) ions stabilized by a bis-β-diketone/pyridyl ligand may be isolated or linked into molecular pairs of two semi-independent such units.