Comment on "Atomic jumps in quasiperiodic Al$_{72.6}$Ni$_{10.5}$Co$_{16.9}$ and related crystalline material"
We disagree with a number of statements by Dolinsek et al. about the specificity of phason dynamics in quasicrystals (QCs).
Materials Literature
文献浏览
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Hollow Polymer Shells from Biological Templates: Fabrication and Potential Applications
Three-dimensional ultrathin polymer shells have been produced by a combination of step-by-step adsorption of polyelectrolytes on glutaraldehyde-treated human erythrocytes and subsequent solubilization of the cytoplasmatic constituents by means of a deproteinizing agent. The obtained hollow films preserve both the size…
Translational and Rotational Dynamics of Rodlike Cellulose Whiskers
The dynamic properties of suspensions of rodlike cellulose microcrystallites (whiskers) are investigated using polarized and depolarized dynamic light scattering (DLS, DDLS) and transient electric birefringence (TEB). The whiskers were prepared by controlled sulfuric acid hydrolysis from cotton and tunicate cellulose…
Reply to cond-mat/0211660: Comments on "A model for fatigue in ferroelectric perovskite thin films" published in Appl. Phys. Lett, 76, 1060 (2000); addendum, ibid. p.3655
This is a reply to cond-mat/0211660 by A.K. Taganstev, which consists of a set of criticisms of our publications on polarisation fatigue in Applied Physics Letters. Although his comments were rejected by Applied Physics Letters more than two years ago, Dr Tagantsev has published them in this archive on 29/11/2002. We…
Nanomechanical resonant structures in nanocrystalline diamond
We report the fabrication and the operation of nanomechanical resonant structures in nanocrystalline diamond. For this purpose, continuous diamond films as thin as 80 nm were grown using microwave plasma enhanced chemical vapor deposition. The lateral dimensions of the fabricated structures were as small as 50 nm and…
Spontaneous buildup of giant surface potential by vacuum deposition of Alq3 and its removal by visible light irradiation
We observed high and persistent spontaneous buildup of the surface potential (SP) upon vacuum deposition of tris(8-hydroxyquinolinato) aluminum(III) (Alq3) on an Au substrate under dark conditions. SP determined by the Kelvin probe method reached 28 V at a thickness of 560 nm and the surface of the Alq3 film was posit…
Theory of low-frequency magnetoelectric effects in ferromagnetic-ferroelectric layered composites
A theoretical model is presented for low-frequency magnetoelectric (ME) effects in bilayers of magnetostrictive and piezoelectric phases. An approach is proposed for the consideration of actual boundary conditions at the interface. An averaging method is used to estimate effective material parameters. The model predic…
Supramolecular Amphiphiles: Spontaneous Formation of Vesicles Triggered by Formation of a Charge-Transfer Complex in a Host
A stable ternary inclusion complex comprising a host, an electron donor, and an electron acceptor with a long alkyl tail (see schematic representation) triggers the spontaneous formation of giant vesicles (see TEM image). The ternary complex behaves as a supramolecular amphiphile with a large polar head group and a si…
Chain Compounds Based on Transition Metal Backbones: New Life for an Old Topic
A new link in the chain: After a long period of inactivity, research into one-dimensional compounds based on linear arrays of transition metals is experiencing a renaissance. Recently, oligomeric and polymeric chains have been reported for a variety of transition metals. One such compound of a particularly exotic vari…
Viscosity of silica
Experimental measurements of the viscosity of silica (SiO2) are critically examined; the best measurements show an activation energy of 515 kJ/mole above 1400 °C and 720 kJ/mole below this temperature. The diffusion of silicon and oxygen in silica have temperature dependencies close to that of the high temperature vis…
Inorganic nanotubesThe illustration of John Dalton (reproduced courtesy of the Library and Information Centre, Royal Society of Chemistry) marks the 200th anniversary of his investigations which led to the determination of atomic weights for hydrogen, nitrogen, carbon, oxygen, phosphorus and sulfur.
Carbon nanotubes were discovered in 1991. It was soon recognized that layered metal dichalcogenides such as MoS2 could also form fullerene and nanotube type structures, and the first synthesis was reported in 1992. Since then, a large number of layered chalcogenides and other materials have been shown to form nanotube…
[(salen)Al]-Mediated, Controlled and Stereoselective Ring-Opening Polymerization of Lactide in Solution and without Solvent: Synthesis of Highly Isotactic Polylactide Stereocopolymers from Racemic d,l-Lactide
Easily accessible [(salen)(iPrO)Al] exerts excellent molecular-weight and stereochemical control in lactide polymerization either in solution or in the absence of solvent. The R,R initiator shows a marked preference for L-lactide over D-lactide. Stereoblock copolylactides (see scheme) with high melting points can be p…
Accurate correlation consistent basis sets for molecular core–valence correlation effects: The second row atoms Al–Ar, and the first row atoms B–Ne revisited
Correlation consistent basis sets for accurately describing core–core and core–valence correlation effects in atoms and molecules have been developed for the second row atoms Al–Ar. Two different optimization strategies were investigated, which led to two families of core–valence basis sets when the optimized function…
Anwendung der Rasterelektronenmikroskopie und der Transmissionselektronenmikroskopie in der Halbleiterindustrie / Application of Scanning Electron Microscopy and Transmission Electron Microscopy in Semiconductor Industry
Article Anwendung der Rasterelektronenmikroskopie und der Transmissionselektronenmikroskopie in der Halbleiterindustrie / Application of Scanning Electron Microscopy and Transmission Electron Microscopy in Semiconductor Industry was published on December 1, 2002 in the journal Practical Metallography (volume 39, issue…
Conoscopic evaluation of the birefringence of gradient-index lenses: infidelity sources
Gradient-index lenses are samples whose special characteristics must be taken into account to design the optical polariscopes that can be applied in the evaluation of their birefringence. We discuss the main infidelity sources that modify the conoscopic patterns when a traditional polariscopic setup is used.
Sodium Phosphate Dodecahydrate (Na3PO4⋅12H2O) by XPS
We report the XPS spectra of sodium phosphate. XPS spectra were collected with a VSW HA150 x-ray photoelectron spectrometer using monochromatic Al Kα x-radiation. Monochromatic radiation provides a distinct clarity to the rich peak structure in the valence band of sodium phosphate due to the absence of interfering x-r…
Synthesis and properties of novel poly(p-xylylene)s with aliphatic substituents
Abstract Poly( p -xylylene)s (PPX) with aliphatic substituents at the alpha position were synthesized by chemical vapor deposition (CVD) via vapor phase pyrolysis of α-chloro-1,4-xylenes, or by base-induced dehydrohalogenation of α-chloro-1,4- xylenes (Gilch route). These PPXs are soluble under ambient conditions in o…
Synthesis and properties of some novel, soluble and light‐coloured, aromatic poly(amide–imide) copolymers
Abstract A new type of tetraimide‐dicarboxylic acid (I) was synthesized starting from the ring‐opening addition of m ‐aminobenzoic acid ( m ‐ABA), 4,4′‐oxydiphthalic anhydride (ODPA) and 4,4′‐methylenedianiline (MDA) at a 2:2:1 molar ratio in N ‐methyl‐2‐pyrrolidone (NMP), followed by cyclodehydration to the diacid I.…
A Novel Stress-Freezing Technique for Studying the Compressional Behavior of Woven Fabrics
This paper describes a novel experimental approach to assessing fabric structural geometry under compression, and presents a study of some typical technical fabrics. The method employs a "stress-freezing" technique, where a fabric sample, impregnated with a clear resin, is subjected to compressive stress and held unde…
Steroid motor: dynamics of cholesteric helix induction in the nematic droplet
A nematic liquid crystal can be converted into a cholesteric phase by a chiral dopant, and the cholesteric pitch can be changed by its photochemical transformations [1]. For the first time we investigate the dynamics of the cholesteric phase induction using seven steroids (vitamin D isomers and related compounds) as c…