Materials Literature
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In this study, M19 steel and amorphous material asynchronous motors have been examined by finite elements methods with v/f controlling. Performances of the motors have been investigated by means of analysis. The losses of amorphous and M19 steel core motors are compared at higher and lower frequencies. If amorphous ma…
In this paper, we analytically investigate multi-component Cahn–Hilliard and Allen–Cahn systems which are coupled with elasticity and uni-directional damage processes. The free energy of the system is of the form ∫ Ω ½Γ∇ c : ∇ c + ½|∇ z | 2 + W ch ( c )+ W el ( e,c,z )dx with a polynomial or logarithmic chemical energ…
Abstract Various nanoplasmonic devices were fabricated using top‐down method such as electron beam lithography, electroplating and focused ion beam techniques. These substrates were investigated after depositing the molecules from dye to protein, using chemisorptions techniques. Theoretical simulations were also perfo…
We report new structural designs to dramatically increase the surface area of the ZnO nanostructure without compromising the small volume much. Space-efficient and facet-specific ZnO 3-D nanostructures, namely {101}-stacked nanocones and {100}-nanoforest, have been prepared by facet-selective etching and oriented nano…
After substitution of carbon by nitrogen, the electronic structures of the porous graphene have been studied by the density functional theory calculations. The N substitutional site without hydrogen passivation leads to a tunable energy gap of the two-dimensional porous polymer, depending on the number of N atoms in a…
This article analyzes dimensional changes due to irradiation of monolithic plate-type nuclear fuel and compares results with finite element analysis of the plates during fabrication and irradiation. Monolithic fuel plates tested in the Advanced Test Reactor (ATR) at Idaho National Lab (INL) are being used to benchmark…
We investigate the structural response of charge and orbitally ordered (CO/OO) manganites to ultrafast optical excitation using optical reflectivity and x-ray diffraction as a probe. We study a La${}_{0.42}$Ca${}_{0.58}$MnO${}_{3}$ (LCMO) thin film and a La${}_{0.25}$Pr${}_{0.375}$Ca${}_{0.375}$MnO${}_{3}$ (LPCMO) sin…
Intracellular pH plays an important role in many cellular events, such as cell growth, endocytosis, cell adhesion and so on. Some pH fluorescent probes have been reported, but most of them are one-photon fluorescent probes, studies about two-photon fluorescent probes are very rare. In this work, the geometrical struct…
Three copper(II)@hemicryptophane complexes with various cavity sizes and shapes, Cu(II)@1, Cu(II)@2 and Cu(II)@3, were synthesized and characterized by near-IR/vis and EPR spectroscopies. The spectroscopic data are consistent with the presence of a trigonal-bipyramidal geometry of the N(4)Cu·H(2)O core, in accord with…
PEGged! A series of mono-PEGylated zinc(II) phthalocyanines for photodynamic therapy with singlet oxygen have been prepared and formulated in aqueous media with different methods. The system based on silica nanoparticles exhibits remarkably high stability and in vitro photocytotoxicity.
Surface-enhanced Raman scattering (SERS) nano-tags are of increasing interest in biomedical research as viable alternatives to bio-imaging techniques based on semiconductor quantum dots or fluorescent molecules. In this work, we fabricate silica-coated gold nanorods (AuNRs) encoded with two molecular labels to operate…
A multifunctional composite film that exhibited thermoresponsive absorption and emission was fabricated using a thermochromic fluoran dye, its developer, and a luminescent europium(III) complex. The emissions from and coloration of this composite film could be reversibly changed and maintained via the thermochromic re…
And palladium makes three: In contrast to the formation of cyclic dimers in the Cu-mediated reaction, Pd-catalyzed oxidative coupling of 2,18-diethynylporphyrins preferentially produced cyclic trimers (see scheme). A porphyrin hexamer with a doubly 1,3-butadiyne-bridged conjugated trimeric core and directly meso-appen…
Lattice and spin excitations have been studied by Raman scattering in hexagonal YbMnO${}_{3}$ single crystals. The temperature dependences of the phonon modes show that the ${E}_{2}$ mode at 256 cm${}^{\ensuremath{-}1}$ related to the displacement of Mn and O ions in $a\ensuremath{-}b$ plane is coupled to the spin ord…
Abstract Ultraviolet (UV) irradiation is an environmentally friendly technique to modify starch. In this study, potato starch films were irradiated by UV (wavelength ∼302 nm) in the presence of sodium benzoate as a photo‐sensitizer (PHS). PHS concentrations in the starch films were varied in the range of 0.2–1.0% (bas…
Abstract We present photoluminescence and resonant Raman measurements of atomically thin layers of molybdenum disulfide (MoS 2 ) in the energy range of the A and B optical transitions. We found a Stokes shift of the transition energies in the resonant Raman measurements compared to the photoluminescence. The Stokes sh…
Löslich und porös: Lösliche konjugierte mikroporöse Polymere (SCMPs) können durch Synthese von diskreten hochverzweigten Molekülen hergestellt werden. Die Materialien werden aus der Lösung als dünne Filme (siehe Bild) abgeschieden, was eine Reihe von Verarbeitungsmöglichkeiten eröffnet, die für unlösliche CMP-Netzwerk…
Abstract Bacterial cellulose (BC) and goat bone apatite (GBA) composites were fabricated by a dissolving method. The 4‐methylmorpholine‐4‐oxide (NMMO) served as the solvent for BC. Goat bone apatite was added to the NMMO solution of BC, so the shape of the material could be easily controlled by using appropriate molds…
Eine sechskernige Dysprosium(III)-Verbindung aus zwei Dy3-Dreieckeinheiten mit gegenüberliegenden Kanten (Dy violett, C grau, N blau, O rot) behält ihren nichtmagnetischen Grundzustand bei und verhält sich wie ein Einzelmolekülmagnet. Diese Struktur und starke Kopplungen über das μ4-O2−-Ion stabilisieren eine ähnliche…
We report on the first single emitter fluorescence spectra of DNA-stabilized silver clusters (Ag:DNAs) at ambient and cryogenic temperatures. While Ag:DNAs have received much attention recently due to their sequence-tunable emission wavelengths, the nature of the optical transitions (molecule-like or collective, clust…