Materials Literature
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The microscopic model in which nodes interacting with each other are statistical systems is introduced. The nodes conditions are connected with a string of distinct microscopic configurations and depend on external parameters (pressure and temperature). In this model the consequent description of first- and second-ord…
Time-dependent density functional theory is extended to include dissipative systems evolving under a master equation, providing a Hamiltonian treatment for molecular electronics. For weak electric fields, the isothermal conductivity is shown to match the adiabatic conductivity, thereby recovering the Landauer result.
Carbon nanotubes with their outstanding electrical and mechanical properties are suggested as interconnect material of the future and as switching devices, which could outperform silicon devices. In this paper we will introduce nanotubes, specify the applications, where nanotubes can contribute to the advancement of M…
We used an epoxysilane/aminosilane coating deposited from an aqueous solution to strengthen flat glass. We studied film formation, interfacial and mechanical properties of the film. The film is highly cross-linked with a 6 GPa Young's modulus and good adhesion. Our results suggest that crack face bridging accounts for…
Despite great advances in computation, materials design is still science fiction. The construction of structure-property relations on the quantum scale will turn computational empiricism into true design.
Magnetic nanoparticles have been advocated for use in magnetic resonance (MR) image enhancement and as bio-carriers in biological systems for many years. However it is only in recent years that the fields of nanotechnology, materials science and cell biology have combined to enable us to fully comprehend the potential…
A general methodology that utilizes confined mesoporous silica as template for preparing highly ordered mesostructured nanowires and nanowire arrays is developed. The prepared Ag, Ni, and Cu 2 O nanowires, with unprecedented mesostructures of coaxially multilayered helical, and stacked-donut structures, have the uniqu…
Molecular dynamics simulations based on an empirical potential energy surface were used to study iron catalyzed nucleation and growth of single-walled carbon nanotubes (SWNTs). The simulations show that SWNTs grow from iron-carbide particles at temperatures between 800 and 1400 K, whereas graphene sheets encapsulate t…
This paper describes the synthesis of silver nanoparticles in a continuous flow tubular microreactor using silver pentafluoropropionate as a single-phase reactant precursor. This precursor can be thermally reduced in isoamyl ether to form silver nanoparticles in the presence of trioctylamine. The reaction is suitable…
Human mesenchymal stem cells (hMSC) derived from bone marrow aspirates can form the basis for the in vitro cultivation of autologous tissue grafts and help alleviate the problems of immunorejection and disease transmission associated with the use of allografts. We explored the utility of hMSC cultured on protein scaff…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic TTF-Based Charge-Transfer ComplexesToshiaki Enoki and Akira MiyazakiView Author Information Department of Chemistry, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan Cite this: Chem. Rev. 2004, 104, 11, 5449–5478Publication Date (Web)…
Bone marrow mesenchymal stem cells (MSCs) can differentiate into a variety of cell types, including vascular smooth muscle cells (SMCs), and have tremendous potential as a cell source for cardiovascular regeneration. We postulate that specific vascular environmental factors will promote MSC differentiation into SMCs.…
Nearly monodisperse ZnSe and ZnS nanocrystals were formed in noncoordinating solvents using alternative precursors. The parameter window for the growth of high quality zinc chalcogenide nanocrystals was found to be much narrower than that of the corresponding cadmium chalcogenide nanocrystals. In contrast to syntheses…
Materials science has traditionally involved the study of the self-assembly of atoms or molecules into bulk thermodynamic phases. In her Perspective, Glotzer predicts that this field will be revolutionized by new materials made from larger, more complex building blocks designed to assemble in specific ways. These buil…
The first discrete, selenium-centered tetranuclear zinc cluster [Zn4(mu4-Se)[Se2P(OPr)2]6] was isolated and characterized. The cluster consists of six edge-bridged dsep ligands with four zinc atoms in a slightly distorted tetrahedron and a mu4-Se atom in the center. In addition, 12 mu2-bridging selenium atoms form a S…
In this work, the thermal conductivity of nanofilms, nanowires, and nanoparticles are studied using molecular dynamics simulation. It is found that their thermal conductivity depends significantly on the characteristic size until it reaches a large value. Comparison with results of the lattice Boltzmann method reflect…
Abstract Based on 1,4‐succinic acid, 1,4‐butanediol, poly(ethylene glycol)s and dimethyl terephthalate, biodegradable segmented multiblock copolymers of poly[(butylene terephthalate)‐ co ‐poly(butylene succinate)‐ block ‐poly(ethylene glycol)] (PTSG) were synthesized with different poly(butylene succinate) (PBS) molar…
Abstract The synthesis of a novel nonlinear optical (NLO) chromophore with threefold symmetry − 2,5,8‐tris(diethylamino)‐1,3,4,6,7,9,9b‐heptaazaphenalene ( 4 ) − is reported. Compound 4 was synthesized from 2,5,8‐trichloro‐1,3,4,6,7,9,9b‐heptaazaphenalene ( 3 ) through a nucleophilic aromatic substitution, its structu…
Polymeric substrates of different surface chemistry and length scales were found to have profound influence on cell adhesion. The adhesion of fibroblasts on surfaces of oxidized polystyrene (PS), on surfaces modified with random copolymers of PS and poly(methyl methacrylate) [P(S-r-MMA)] with topographic features, and…
Golden prospects: Monolayers of the fourth-generation dendrimer G4-SH, which is decorated with 96 terminal thiol groups (see picture), bind Au55(PPh3)12Cl6 clusters as monolayers under inert conditions. In an atmosphere of CH2Cl2 the clusters begin to move and lose their ligand shell, which leads to the formation of n…