Materials Literature
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In this study, we evaluate coaxial electrospun nanofibers with gelatin in the shell and poly(vinyl alcohol) (PVA) in the core as a potential vascular material by determining fiber surface roughness, as well as human platelet deposition and activation under varying conditions. PVA scaffolds had the highest surface roug…
A series of halide-free ammine manganese borohydrides, Mn(BH4 )2 ⋅nNH3 , n=1, 2, 3, and 6, a new bimetallic compound Li2 Mn(BH4 )4 ⋅6NH3 , and the first ammine metal borohydride solid solution Mg1-x Mnx (BH4 )2 ⋅6NH3 are presented. Four new crystal structures have been determined by synchrotron radiation powder X-ray…
Finite element micromagnetic simulations are used to compute the temperature-dependent hysteresis properties of Nd2Fe14B permanent magnets in order to assess the influence of a hard (Dy,Nd)2Fe14B shell. The simulations show that the 4 nm thick shell cancels out the reduction in coercivity from an outer defect layer, w…
This review surveys advances in the development of various material functionalities based on thermoplastic cellulose and related structural polysaccharide derivatives. First, the dependence of thermal (phase) transition behavior on the molecular composition of simple derivatives is rationalized. Next, approaches enabl…
X-ray free-electron lasers (XFELs) promise to enable the collection of interpretable diffraction data from samples that are refractory to data collection at synchrotron sources. At present, however, more efficient sample-delivery methods that minimize the consumption of microcrystalline material are needed to allow th…
The lattice thermal conductivities (\ensuremath{\kappa}) of binary compound materials are examined as a function of hydrostatic pressure $P$ using a first-principles approach. Compounds with relatively small mass ratios, such as MgO, show an increase in \ensuremath{\kappa} with $P$, consistent with measurements. Conve…
Nanocomposite coatings of silver particles embedded in a plasma polymer matrix possess interesting properties depending on their microstructure. The film microstructure is affected among others also by the RF power supplied during the deposition, as shown by transmission electron microscopy. The optical properties are…
Polypropylene (PP) is a general-purpose plastic, but some applications are constrained by its high flammability. Thus, flame retardant PP is urgently demanded. In this article, intumescent flame retardant PP (IFRPP) composites with enhanced fire safety were prepared using 1-oxo-4-hydroxymethyl-2,6,7-trioxa-1-phosphabi…
The inner-surface functionalization of hollow silica spheres has rarely been reported and is still a challenging topic. Herein, we report a deacetalization-Henry cascade reaction catalyzed by dual-functionalized mesoporous silica hollow nanospheres with basic amine groups (NH2 ) on the internal shell and carboxylic a…
Single-component and binary nanocrystal superlattices are assembled over wafer-scale areas using the dip-coating method. A series of measurements are performed to confirm superlattice assembly. This study demonstrates the versatility of dip-coating in depositing a diverse set of nanocrystal materials and superlattice…
We present magneto-Raman scattering studies of electronic inter-Landau level excitations in quasineutral graphene samples with different strengths of Coulomb interaction. The band velocity associated with these excitations is found to depend on the dielectric environment, on the index of Landau level involved, and to…
The piezoelectric and piezoresistive effects of InAs nanowires are experimentally demonstrated for the first time and are observed to strongly depend on the NW crystal structure. While single-crystalline 〈0001〉 oriented wurtzite nanowires exhibit remarkable piezoelectric and piezoresistive effects, they are negligibl…
Understanding the nature of charge carriers at the LaAlO3/SrTiO3 interface is one of the major open issues in the full comprehension of the charge confinement phenomenon in oxide heterostructures. Here, we investigate thermopower to study the electronic structure in LaAlO3/SrTiO3 at low temperature as a function of ga…
Since the installation of an ITER-like wall, the JET programme has focused on the consolidation of ITER design choices and the preparation for ITER operation, with a specific emphasis given to the bulk tungsten melt experiment, which has been crucial for the final decision on the material choice for the day-one tungst…
Although the formation mechanism of biogenically metallic nanoparticles is broadly associated to enzyme mediation, major attention has been given to the role of proteins and peptides in oxido-reduction of metallic ions leading to these nanostructures. Among the wide range of biomolecules that can act not only as cappi…
Multi-layered MoS2 film formed by high-temperature sputtering for enhancement-mode nMOSFETs, Ohashi, Takumi, Suda, Kohei, Ishihara, Seiya, Sawamoto, Naomi, Yamaguchi, Shimpei, Matsuura, Kentaro, Kakushima, Kuniyuki, Sugii, Nobuyuki, Nishiyama, Akira, Kataoka, Yoshinori, Natori, Kenji, Tsutsui, Kazuo, Iwai, Hiroshi, Og…
Substitutional heterovalent doping represents an effective method to control the optical and electronic properties of nanocrystals (NCs). Highly monodisperse II-VI NCs with deep substitutional dopants are presented. The NCs exhibit stable, dominant, and strong dopant fluorescence, and control over n- and p-type electr…
Green synthesis of nanoparticles is regarded as a safe and non-toxic process whereas conventional synthesis using chemical methods produces toxic substance. This study provides a novel insight for enzymatic synthesis method of silver nanoparticles using purple acid phosphatase, isolated from Limonia acidissima (wood a…
Reduced graphene oxide (rGO) was covalently bound onto the surface of polyurethane (PU) sponge using two different coupling agents: (3-aminopropyl)triethoxysilane and titanium(IV)(triethanolaminato)isopropoxide. The coupling agents were introduced before and after reduction of graphene oxide to compare the impact of t…
Intrinsic diamagnetism of graphene is studied both theoretically and experimentally, to unravel the magnetic response of chiral massless fermions. Comprehensive formulas predicting the variation of graphene magnetization with magnetic field and temperature are developed. Graphene magnetization $M$ at low temperatures…