Materials Literature
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Compact expressions are derived for the maximum operating frequency of carbon nanotube field-effect transistors. The expressions are shown to be applicable over wide ranges of physical properties, parasitic resistances, and gate biases. The utility of the expressions is demonstrated by their prompting of a conservativ…
In this work, the fabrication technique for micropatterns of a colloidal assembly on a gold-patterned electrode surface using electrophoretic deposition is described. It was found that the micropatterns of a colloidal assembly were preferentially deposited onto the gold pattern region, when a gold patterned indium tin…
Structural modification of nanosized diamonds (ND) irradiated with 100 keV 15 N ions for various doses was investigated using transmission electron microscopy (TEM) and Raman spectroscopy. Raman active modes showing a long-range order of diamond were observed for samples dosed with 10 15 cm −2 . However, the formation…
Molecularself-assembly of peptide systems is emerging as a new approach in protein engineering, study of protein folding, and protein-protein interaction as well as nanotechnology, polymer science, nanomaterials science and engineering. Self-assembling peptide systems lie at the interface of all these fields.Many self…
A novel dynamic soft template solution route has been developed for the preparation of micrometre-sized In 2 S 3 half-shells, assembled by fine nanoparticles. This novel half-shell nanostructure was characterized by electron microscopes, x-ray diffraction (XRD), x-ray photoelectron (XPS), and optical spectroscopes. Th…
In this paper we demonstrate a modified focused ion beam (FIB) milling approach integrated with self-alignment to synthesize ferroelectric nanostructures. Nanoscale holes ranging from 500 nm down to 100 nm in diameter are created on 'spun-on' amorphous TiO2 on Pt/TiO2/Si using FIB milling. It is found that spin-coatin…
Abstract Summary: In this paper, high power ultrasound was introduced into polystyrene (PS)/ethylene‐propylene diene monomer (EPDM) (80/20) blend melts during extrusion. The structure and properties of PS/EPDM blends treated ultrasonically, such as their mechanical properties, phase morphology, dynamic rheological beh…
Abstract Summary: A new method to prepare maleic anhydride grafted poly(propylene) (MAPP) was developed successfully. The grafting reaction of maleic anhydride (MA) onto poly(propylene) (PP) was performed with the aid of ball‐milling, and the grafting mechanism was proposed based on the experimental results. MAPP was…
Abstract The reversible photochemical ion chelation of the newly synthesised substituted N , N′ ‐bis(spiro[1‐benzopyran‐2,2′‐indolyl])diazacrown systems 15a – c and the subsequent molecular electronic control of this process using appropriately placed substituent groups on the spiro‐benzopyran skeleton is reported. Th…
Abstract Summary: Hyperbranched aliphatic copolyesters have been prepared by the copolymerization of ε ‐caprolactone and 2,2‐bis(hydroxymethyl)butyric acid (AB 2 ‐monomer), catalyzed by (i) HfCl 4 (THF) 2 and (ii) diphenylammonium trifluoromethanesulfonate (DPAT), respectively. In both cases, copolymerization by combi…
Abstract Summary: A novel addition‐type liquid silicone rubber (SR)/organic montmorillonite (OMMT) nanocomposite has been synthesized. N , N ‐Di(2‐hydroxyethyl)‐ N ‐dodecyl‐ N ‐methylammonium chloride was used as an intercalation agent to treat Na + ‐montmorillonite and form a novel kind of OMMT. Three types of SR/OMM…
Abstract Summary: Conductive nanotubes were fabricated by the alternate adsorption of negatively charged polypyrrole (PPy) and positively charged poly(allylamine hydrochloride) (PAH) onto the inner pores of polycarbonate templates. Nanotubes are obtained by the subsequently removal of the template. Using several micro…
Pressure variations of the magnetic state in ${\mathrm{Fe}}_{65}{\mathrm{Ni}}_{27}{\mathrm{Mn}}_{8}$ and disordered ${\mathrm{Fe}}_{72.8}{\mathrm{Pt}}_{27.2}$ Invar alloys have been investigated by ac susceptibility measurements under high pressure up to $7.5\phantom{\rule{0.3em}{0ex}}\mathrm{GPa}$. In both alloys, th…
Abstract Tris(β‐diketonato)europium( III ) with a series of variably fluorinated ligands derived from 3,5‐heptanedione were synthesised with the aim of determining their hydration state under extraction conditions. The number of coordinated water molecules was determined by measuring the lifetime of the Eu( 5 D 0 ) ex…
The contrast mechanism for scanning electron microscopy images of single-walled carbon nanotubes (SWNTs) is studied for samples on various substrates using low voltage scanning electron microscopy (LVSEM). We show that the contrast of SWNT images is greatly affected by a charging effect, where the brightness strongly…
Polycrystalline double perovskite Sr 2 FeMoO 6 samples were synthesized by a wet chemistry method under controlled reduction conditions. Single-phase 'bulrush-like' samples of grain size about 110 nm in width and >2 µm in length were readily obtained at temperatures as low as 950 °C, and they showed a large room-tempe…
One-step synthesis of 3D dendritic gold/polypyrrole nanocomposites via a self-assembly method, Huang, Kun, Zhang, Yuanjian, Han, Dongxue, Shen, Yanfei, Wang, Zhijuan, Yuan, Junhua, Zhang, Qixian, Niu, Li
We have developed an electrically-driven flexible polymer microcavity with green- or red-emitting polymer sandwiched between the 3M multilayer flexible polymer distributed Bragg reflector and the aluminum mirror. The nearly all-polymeric flexible planar polymer microcavity of a Fabry-Perot resonator is fabricated by e…
A series of nano-hybrid light emitting dots with diameter range from 2 nm to 4 nm were synthesized through grafting organic conjugated chains directly onto an inorganic rigid cage polyhedral oligomeric silsesquioxanes (POSS). The effect of chain length, side groups, polarity of solvents on the property of light emitti…
Despite the promising field emission properties, as-grown carbon nanotubes (CNTs) are far from perfect and need improvement. We report on the field electron emission properties of hafnium coated CNTs. The result shows hafnium carbide (HfC) can be formed on the surface of CNT films at an annealing temperature of 1200 °…