Materials Literature
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We present a hybrid approach that combines top-down fabrication with bottom-up directed assembly for making single-walled carbon nanotube (SWNT) based three-dimensional interconnects. The SWNTs are assembled using dielectrophoresis at room temperature on a microfabricated 3D platform. The two-terminal resistance of th…
Abstract The thermoplastic starch/PVA (SP) composites are prepared by a single‐screw extruder. This article presents a study of the influence of the formulation on the hydrophilicity of SP composites. An orthogonal array and the analysis of variance (ANOVA) are employed. The results of ANOVA show that the water absorp…
Abstract Conducting polymers are excellent microwave absorbers and they show technological advantage when compared with inorganic electromagnetic absorbing materials, being light weight, easily processable, and the ability of changing the electromagnetic properties with nature and amount of dopants, synthesis conditio…
Abstract The current trends in packaging technology are focusing on the development of functional materials that interact with the environment and with the food, playing an effective role in the preservation of quality. In particular, the so‐called active packaging technologies were developed as a response to the mark…
The present paper reports, for the first time, the successful fabrication of layered double hydroxide (Mg-Al LDH)-reinforced polycaprolactone (PCL) nanofibers by electrospinning. Either the LDH in carbonate form or an LDH organically modified with 12-hydroxydodecanoic acid (LDH-HA) were incorporated into PCL and elect…
Nanodroplets of isotactic polypropylene (iPP) were observed using temperature-controlled AFM in order to study the polymer's crystallization behavior. The nucleation, growth, and transformation of iPP crystals on heating have been directly imaged. The strong confinement of the polymer into nanoscale droplets has allow…
Charge-stabilized dispersions of inorganic colloids are shown to induce spontaneous emulsification of hydrophobic (TPM) molecules to stable oil-in-water emulsions, with monodisperse, mesoscopic oil droplet diameters in the range of 30-150 nm, irrespective of the polydispersity of the starting dispersions. The results…
In the course of developing electronic devices on a molecular scale, dithienylethenes photochromic molecules constitute promising candidates for optoelectronic applications such as memories and switches. There is thus a great interest to understand and control the switching behavior of photochromic compounds deposited…
Ferritin nanoparticles ornamented with a Ti-binding peptide are versatile nanoscaled building blocks. Their specific binding ability is strong enough to position them on nanopatterned Ti regions on a Pt substrate. Furthermore, the peptides mineralization activity enables the formation of titania on the outer side of t…
Biodegradable polymers such as polyesters and polycarbonates formed by ring-opening polymerizations, including poly-(ɛ-caprolactone), poly(p-dioxanone), poly(trimethylene carbonate), and most notably poly(glycolic acid) and poly(lactic acid), have met wide acceptance for medical uses as a consequence of their low toxi…
Searching chemical databases for possible drug leads is often one of the main activities conducted during the early stages of a drug development project. This article shows that spherical harmonic molecular shape representations provide a powerful way to search and cluster small-molecule databases rapidly and accurate…
Two new heterometallic cubane molecules have been synthesized. High-frequency electron paramagnetic resonance and magnetization measurements indicate that [Mn(3)Ni(hmp)(3)O(N(3))(3)(C(7)H(5)O(2))(3)] (1) displays a well-isolated S = 5 ground state (DeltaE > 120 K), with g = 2.0, D = -0.23 cm(-1), and ferromagnetic Mn-…
Mixed-valent Mn/O dinuclear and polynuclear molecular compounds containing MnIII are almost without exception trapped valence. Large differences between the strengths of the exchange interactions within MnIIMnIII, MnIIIMnIII and MnIIIMnIV pairs lead to situations where MnIIIMnIV interactions, the strongest of the thre…
Cobalt-substituted manganese oxide one-dimensional (1D) nanowires have been synthesized through one-pot hydrothermal treatment of the ion pair solution of Co 2+ and MnO 4 -, along with their three-dimensional (3D) hierarchically assembled microspheres. The stabilization of cobalt ion in the manganese sites of α- and δ…
Reaction between CdX2 and 1-alkyl-2-(phenylazo)imidazole (RaaiR') has isolated complexes of composition Cd(RaaiR')2X2 in MeOH or MeCN. Crystallization of Cd(RaaiR')2I2 from N,N-dimethylformamide (DMF) has separated [Cd(RaaiR')I2.DMF], while Cd(RaaiR')2X2 (X = Cl and Br) remains unchanged in its composition upon crysta…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTPolyaniline Hierarchical Structures Synthesized in Aqueous Solution: Micromats of NanofibersChuanqiang Zhou, Jie Han, Genping Song, and Rong GuoView Author Information School of Chemistry and Chemical Engineering, Yangzhou Universit…
The effect of accidental drops on MEMS sensors are examined within the frame-work of a multi-scale finite element approach. With specific reference to a polysilicon MEMSaccelerometer supported by a naked die, the analysis is decoupled into macro-scale (at dielength-scale) and meso-scale (at MEMS length-scale) simulati…
We report the directed assembly of single-walled carbon nanotubes (SWCNTs) at lithographically defined positions on gate oxide surfaces, allowing for the high yield ( approximately 90%) and parallel fabrication of SWCNT device arrays. SWCNTs were first chemically functionalized through diazonium chemistry with a hydro…
For a large class of fluids exhibiting ultrasoft bounded pair potentials, particles form crystals consisting of clusters located in the lattice sites, with a density-independent lattice constant. Here we present an investigation on the dynamic features of a representative example of this class. It is found that partic…
The in-plane thermal conductivity kappa of the layered superconductor CuxTiSe2 was measured down to temperatures as low as Tc/40, at x=0.06 near where the charge-density-wave order vanishes. The absence of a residual linear term at T-->0 is strong evidence for conventional s-wave superconductivity in this system. This…