Materials Literature
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A brief review is given on electronic and transport properties of monolayer graphene from a theoretical point of view. The topics include the effective-mass description of electronic states, topological anomaly associated with Berry's phase, singular diamagnetic susceptibility, zero-mode anomalies and their removal du…
A species of marine diatom, Toxarium undulatum, has emerged as a problematic biofouler of contemporary environmentally benign marine coatings. Previous analyses by atomic force microscopy (AFM) showed the cell-substratum adhesive of this alga contained macromolecules with a modular protein backbone assembled into nano…
Abstract . The Jiles-Atherton model is widely applied in the description of hysteresis in ferromagnetic, ferroelectric, magnetostrictive and piezoelectric materials, however the estimation procedure for recovery of its parameters may be troublesome for potential users. In the paper the issues related to the estimation…
More than one thousand photochemistry papers were published in the most cited twenty-four scientific journals in 2007. With nanosecond, picosecond, and femtosecond laser techniques widely applied, detection of reactive intermediates, products of chemical bond dissociation, isomerizations, rearrangements, as well as th…
We study the electronic and magnetic properties of the quinternary full Heusler alloys of the type Co-2[Cr1-xMnx][Al1-ySiy] employing three different approaches: (i) the coherent potential approximation; (ii) the virtual crystal approximation; and (iii) supercell calculations. All three methods give similar results, a…
A new deembedding method in permittivity measurement of ferroelectric thin film material is proposed in this paper. By measuring the two scattering matrixes of the two samples with different length, the propagation constant of the actual network under test (ANUT) can be obtained. Further more, the permittivity would b…
The first example of complex coacervation between a biopolymer and polyoxometalate clusters is identified in the gelatin-decavanadate system.
A series of nonlinear optical chromophores based on the highly thermal and photostable tricyanovinylidenediphenylaminobenzene (TCVDPA) was synthesized and their thermal and optical properties were investigated. Modification of the TCVDPA chromophore with bulky groups provides reduction of dipole–dipole interactions an…
Improvement of Characteristics of Ga-Doped ZnO Grown by Pulsed Laser Deposition Using Plasma-Enhanced Oxygen Radicals, Oh, Min-Suk, Hwang, Dae-Kue, Seong, Dong-Jun, Hwang, Hyun-Sang, Park, Seong-Ju, Do Kim, Eun
A novel heterometallic 1D coordination polymer [{Ni(en)2}2(micro-NCS)4Cd(NCS)2](n) x nCH3CN (en = ethylenediamine) has been prepared using the self-assembly process in a one-pot reaction of cadmium oxide, nickel and ammonium thiocyanates with an acetonitrile solution of ethylenediamine. The complex consists of an unco…
The hexacyanoosmate(III) anion was used to prepare a pentanuclear cyanide bridged molecular cluster with ligand-protected Ni(II) ions as well as the corresponding Prussian blue phase from a reaction with aqueous Ni(II) ions.
The influence of Deep Cryogenic Treatment (DCT) on the properties of AISI-M2 is evaluated. Hardness,(apparent) fracture toughness and wear resistance were measured after submitting this steel to conventional vacuum heat treatment, including quenching and triple tempering and three variants including DCT before and aft…
Tetracyanoanthraquinodimethane (TCAQ) derivatives having three alkoxy chains at their extremities self-assemble to form both columnar liquid crystals and fibrous aggregates through intermolecular dipole–dipole interactions. The TCAQ derivatives are redox-active, and they exhibit responses in electrochromism in the red…
Zinc oxide (ZnO) nanowires were grown via thermal transport and subsequently doped with different concentrations of Tm, Yb, and Eu using ion implantation and post annealing. High ion fluences lead to morphology changes due to sputtering; however, freestanding nanowires become less damaged compared to those attached to…
Thermoelectric properties of Al-doped ZnO prepared by solution combustion synthesis using urea as fuel and sintered by spark plasma sintering were investigated for developing an energy- and time-saving synthesis method to decrease its thermal conductivity without a significant deterioration in other thermoelectric pro…
The effect of H2SO4 on the crystalline-to-amorphous transformation and hydrolysis of cellulose in water at high temperatures and high pressures was revealed for the first time by using in situ high-resolution optical microscopy.
This paper reviews the field of poled glass and poled fibre devices with a specific focus on silicate glasses and fibres. The technology is presented along with detailed discussion of the mechanism involving charge separation and trapping. The potential role of field induced crystallisation is discussed and several em…
We prove the existence of a quasi-static evolution for a model in strain gradient plasticity proposed by Gurtin and Anand concerning isotropic, plastically irrotational materials under small deformations. This is done by means of the energetic approach to rate-independent evolution problems. Finally we study the asymp…
Nanoscale fibers and non-woven meshes composed of DNA complexed with a cationic surfactant (cetyltrimethylammonium chloride, or CTMA) have been fabricated through electrospinning. The DNA-CTMA complex can be electrospun far more easily than DNA alone. Incorporation of a hemicyanine chromophore resulted in materials th…
Smoothly polished cross-sections of laser-fabricated welds between NiTi shape memory alloy and stainless steel (SS) microwires of approximately the same diameter and, for comparison, between identical stainless steel or NiTi wires have been subjected to local chemical activity and nickel release measurements using sca…