Materials Literature
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The spin transition between the low-spin singlet state and the high-spin quintet state in the [Fe(2-pic)(3)](2+) (2-pic: 2-picolylamine) complex is studied by using density functional theory (DFT) calculations. After careful comparison of density functionals BLYP, B3LYP, and B3LYP* (which has 15% Hartree-Fock exchange…
The dielectric breakdown behavior of alkali‐free glass was determined as a function of thickness and surface roughness. The thickness of commercially available glass (as‐received thickness=50 μm) was reduced to a range of thicknesses between 47 and 5 μm by chemical etching. The RMS surface roughness of the as‐received…
This paper presents an analysis of interactions between a pair of Stone–Wales (SW) defects in a single-walled carbon nanotube (SWCNT) that has been subjected to an external torque. Defect pairs, representing the different combinations of SW defect of A (SW-A) and B (SW-B) modes, were incorporated in SWCNT models of di…
Abstract We use near‐resonance Raman scattering to investigate zinc oxide (ZnO) nanowires grown by chemical vapor deposition on Si substrates. We discuss the role of quasimode mixing on the wavenumber of the longitudinal optical (LO) bands, and we perform Raman measurements with different excitation powers to investig…
Gold (Au) nanostructures of controllable shapes (spherical and multipod) were synthesized by an in situ reduction technique using newly designed amino acid-based redox active amphiphiles without any additional template in alkaline condition. These amphiphiles are the conjugates of fatty acids (e.g., caproic acid, capr…
Eine elegante Strategie zur Herstellung von funktionalisierten Au@MnO-Nanokristallen wurde entwickelt. Die magnetischen „Nanoblumen“ zeichnen sich nicht nur als effiziente Trägermaterialien für den spezifischen Stofftransport aus, sondern sie eignen sich nach der Bindung von Fluorophoren an die Au- und MnO-Komponenten…
Ein orangefarbenes Leuchtmaterial ohne Metallaktivator wurde aus ZnO/H3PO3/Diamin in Cholinchlorid/Oxalsäure als Lösungsmittel mit tiefem Eutektikum synthetisiert, das zugleich – durch Dissoziation der Cholin-Ionen – als Methylierungsmittel und Quelle von Ethylenglycol (EG) wirkte. Die Einlagerung von dimethylierten A…
A volumetric display technology based on two-photon absorption in quantum dots was investigated. We derive and validate a closed form expression for the luminance produced by dispersed quantum dots at the focal point of an infrared pulsed laser beam and we demonstrate using theory and experiments that voxels can be ef…
We report the use of europium chelate, 4,4'-bis(1'',1'',1'',2'',2'',3'',3''-heptafluoro-4'',6''-hexanedion-6''-yl)chlorosulfo-o-terphenyl-Eu(3+) (BHHCT-Eu(3+)), in silver nanostructure-enhanced luminescence and its application to bioassays and bioimaging. The highest luminescence intensity enhancement factor of BHHCT-…
We present experimental and numerical studies of localized terahertz surface waves on a subwavelength-thick metamaterial film consisting of in-plane split-ring resonators. A simple and intuitive model is derived that describes the propagation of surface waves as guided modes in a waveguide filled with a Lorentz-like m…
Fabric selection is a crucial step in fashion product development. Prior research works have studied the prediction of fabric specimens based on the fabric hand descriptors via either traditional statistical methods or artificial intelligence methods. Despite showing good prediction accuracy, these methods usually lac…
A high quality X-ray spectrum image of a 3.3 mum diameter sphere of K411 glass resting on a copper substrate was collected at 25 keV. The same sample configuration was modeled using the NISTMonte Monte Carlo simulation of electron and X-ray transport as is integrated into the quantitative X-ray microanalysis software…
The effects of intermolecular interaction on dipole moment (mu(z)), the mean (alpha(0)) and anisotropy (Deltaalpha) of the polarizability, and the first and second hyperpolarizabilities (beta(0) and gamma(0), respectively) for four lithium-bond dimers (LiCN...LiCN, LiNC...LiNC, H(4)C(2)...LiF, and H(3)N...LiF) have be…
Abstract Three types of Ag‐coated arrays from porous anodic aluminum oxide (AAO) were prepared and studied as substrates for surface‐enhanced Raman scattering (SERS). They were compared with Ag‐coated porous silicon (PSi) samples. AAO‐based substrates were prepared by the vapor deposition of silver directly onto the s…
The exchange channels governing the experimentally reported coupling constant (J(expt)=6 cm(-1)) value in the verdazyl-ligand based Cu(II) complex [Cu(hfac)(2)(imvdz)] are inspected using wave function-based difference dedicated configuration interaction calculations. The interaction between the two spin 1/2 holders i…
Field-sequential-color liquid crystal displays (FSC LCDs) exhibit a ~ 3× higher optical efficiency and 3× higher resolution, but the color breakup (CBU) degrades the image quality and limits the practical applications. In this paper, we propose a method to reduce CBU by using five-primary LEDs instead of three. Withou…
The cathodoluminescent properties of nanocrystalline Lu3Ga5O12:Tb3+ phosphor films were investigated. Phosphor films were prepared on indium tin oxide coated glass by a screen printing method. The Lu3Ga5O12:Tb3+ phosphor is mixed with In2O3 nanoparticles to improve the luminescence and degradation properties of phosph…
Dilute dopant introduces foreign states to the electronic structures of host semiconductors and imparts intriguing properties to the materials. Identifying and positioning the dopant states are of crucial importance for seeking the underlying mechanism in the doped systems. However, such determination has still been c…
We report the fabrication and experimental characterization of a carbon nanotube (CNT)-based MEMS/NEMS electron impact gas ionizer with an integrated extractor gate for portable mass spectrometry. The ionizer achieves low-voltage ionization using sparse forests of plasma-enhanced chemical-vapor-deposited CNTs as field…
Magnetic anisotropy of single crystal Ni50.5Mn30.4Ga19.1 having nonmodulated (NM) martensite structure (c=0.660 nm and b=a=0.547 nm at room temperature) was determined in the range of 10–300 K. The single variant microstructure needed for proper anisotropy determination was prepared by 40 MPa tensile stress in compari…