Materials Literature
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Author: Friedemann, S. et al.; Genre: Journal Article; Issued: 2013-09-23; Title: Comment on "Zeeman-Driven Lifshitz Transition: A Model for the Experimentally Observed Fermi-Surface Reconstruction in YbRh2Si2''
We propose a theoretical model for anisotropic multiferroics, which are one-dimensional charge transfer magnets. By means of Green's function theory, ferroelectric and magnetic properties are studied. It is found that the anisotropy not only plays an important role on the ferroelectric phase transition but also enhanc…
Abstract We demonstrate the current on‐off operation in a novel dual‐gated transistor with a He ion irradiated graphene channel in which defect‐induced transport gap is formed. The transistor operation was performed by controlling the band configuration of gate‐controlled p‐i‐n junction by independent biasing of top g…
Magnetische Nanopartikel (MNPs), die mit einem Magnetfeld ausgerichtet werden können, werden genutzt, um großflächige Anordnungen aus biologischen Nanofasern zu erzeugen, deren Orientierung durch das angelegte Magnetfeld vorgegeben ist. Wenn diese Nanofasern mit MNPs bedeckt sind, können sie durch das externe Magnetfe…
Modern highly complex proteins evolved from much simpler and less specialized subunits. The same concept can be applied in protein engineering to construct new well-folded proteins. Hybrid proteins or chimaeras can be built from contemporary protein fragments through illegitimate recombination. Even parts from differe…
Intrigued by the not fully extended hairpin monomeric structure of the previously reported cyclo -(αβ 3 αβ 2 α) 2 peptide 2, as well as its nanochannel crystallographic assembly, we here investigate the structural properties of a series of turn derivatives ( 3 – 17 ). Five crystallographic monomeric structures of the…
The H355A, H355K, H80A, and H80K mutant enzymes of the argE-encoded N-acetyl-L-ornithine deacetylase (ArgE) from Escherichia coli were prepared, however, only the H355A enzyme was found to be soluble. Kinetic analysis of the Co(II)-loaded H355A exhibited activity levels that were 380-fold less than Co(II)-loaded WT Ar…
Two new lanthanide amidate complexes, {Gd2[Cy(NCO)iPr]6} (1) and {La2[Cy(NCO)iPr]6[Cy(HNCO)iPr]} (2) (iPr = isopropyl, Cy = cyclohexyl), have been synthesized in good yields by silylamine elimination reaction between Gd[N(SiMe3)2]3 or La[N(SiMe3)2]3 and N-(cyclohexyl)isopropyl amide. Complexes 1 and 2 have been charac…
To meet the requirement of microelectronic industry, ceramic/polymer composite films made of CaCu3Ti4O12 (CCTO) powder as filler and PVDF copolymer as matrix were prepared by solution casting method. The dielectric properties (DP) and morphology of the films were studied by impedance analyzer and scanning electron mic…
Ultra-high performance concrete (UHPC) usually contains a very high proportion of ordinary Portland cement which requires a high amount of energy for its production. The present investigations aimed at systematically developing UHPC produced with supplementary cementitious materials to achieving strengths above 150 MP…
We studied solar cells with periodic interface texture. For periods of 550 and 833 nm, we found that the measured photocurrent increases under oblique incidence and assumes a maximum between 20° and 30°. For the geometries used in our experiments, the initial increase occurred for conditions close to those of photonic…
We discuss the cholesteric-nematic transition induced by an external field in a cell in the shape of a slab of finite thickness whose anchoring energy is infinitely strong on one surface and negligible on the other. The case where the surface orientations of the cholesteric director are parallel in the ground state is…
Three linear polyesters with pendant ketoprofen were synthesized by copolymerization of polyethylene glycol (PEG) with malic acid (thiomalic acid or aspartic acid) using lipase B acrylic resin from Candida antarctica (CAL-B) at 90 °C respectively. These thermosensitive polyesters exhibit a lower critical solution temp…
A photochromic diarylethene, 1,2-bis(5-phenyl-2-propyl-3-thienyl)perfluorocyclopentene (1a), was found to have two polymorphic crystal forms, α- and β-crystals. From X-ray crystallographic analysis, the space groups of α- and β-crystals were determined to be P21 /c and C2/c, respectively. The difference between two cr…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation G. Kang, J. Rahomäki, J. Dong, S. Honkanen, J. Turunen; Enhanced deep ultraviolet inverse polariz…
Xiuli Wanga*, Wei Zhaoa, Juwen Zhanga, Qilin Lua, Jian Luana, Guocheng Liua, Hongyan Lina & Aixiang Tianaa Department of Chemistry, Liaoning Province Silicon Materials Engineering Technology Research Centre, Bohai University, Jinzhou, P.R. China* Email: wangxiuli@bhu.edu.cnThree copper(II) isomers, [Cu(dtcd)(DNBA)2]n…
We report on the effect of superconducting ordering in an NbN spacer layer on the magnetic coupling behavior in GdN-NbN-GdN trilayers. In the normal state of NbN, the weak ferromagnetic semiconductor GdN layers were found to be antiferromagnetically coupled, as inferred from magnetization measurements. A gradual decre…
Pipeline working environment is characterised by corrosive conditions, able to develop hydrogen formation. The presence of atomic hydrogen localized in correspondence of crack tip, where the plastic strain reaches the maximum value, is responsible for life reduction. For this reason, it is important to estimate and pr…
Empowering an indirect band-gap material like Si with optical functionalities, firstly light emission, represents a huge advancement constantly pursued in the realization of any integrated photonic device. We report the demonstration of giant photoluminescence (PL) emission by a newly synthesized material consisting o…
We review the occurrence of the diatom genus Actinella Lewis in Hawai‘i. Based on collections from the islands of Kaua‘i, Moloka‘i, and Hawai‘i, we have documented the presence of three species of the genus. Using light and scanning electron microscopy, we illustrate these species, two of which are new to science and…