Materials Literature
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An orthogonal array design (OA 32 ) was employed as a statistical optimization method to enhance the performance of the synthesis of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (HNIW). The current application of the Taguchi method was successful in optimizing the experimental parameters of HNIW synthesi…
To investigate the doping and surface electron accumulation layer properties of tin dioxide (SnO2), the Fermi level and surface band bending of unintentionally-, antimony (Sb)-, and indium (In)-doped SnO2 (101) films were investigated by aluminum and hard x-ray photoelectron spectroscopy, which probe surface and bulk…
Quasi-static experiments using sessile drops and captive bubbles are the most employed methods for measuring advancing and receding contact angles on real surfaces. These observable contact angles are the most easily accessible and reproducible. However, some properties of practical surfaces induce certain phenomena t…
Very uniform 2 μm-pitch square microlens arrays (μLAs), embossed on the blank glass side of an indium-tin-oxide (ITO)-coated 1.1 mm-thick glass, are used to enhance light extraction from organic light-emitting diodes (OLEDs) by ~100%, significantly higher than enhancements reported previously. The array design and siz…
Broadband NIR emission from Er3+ in highly nonlinear zinc-bismuth-borate glasses with full width at half maximum reaching up to 106 nm is reported. The glass compositional effects on thermal, structural, optical and spectroscopic properties have been explored in view of all-optical communication applications. The Zero…
The fabrication of controlled, self-organized, highly ordered tungsten and aluminum nanorods was accomplished via the aluminum lattice template-assisted glancing angle sputtering technique. The typical growth mechanism of traditional glancing angle deposition technique was biased by self-organized aluminum lattice see…
Both sides of the sheet: A simple method is described for functionalizing the two surfaces of individual graphene sheets with different nanoparticles in either a patterned or nonpatterned fashion. Graphene sheets with ZnO and Au nanoparticles on their opposite surfaces show a strong photodependent diodelike rectifying…
Tm3+/Tb3+/Mn2+ tridoped phosphate glasses containing different Mn2+ ion concentrations were synthesized to explore new white-light-emitting material. Under 355 nm excitation, the CIE coordinates (x=0.328, y=0.337) of the Mn0.10 sample doped with 0.10 wt. %Mn2+ are close to the standard equal energy white-light illumin…
This work presents a thorough quantum chemical study of the terthiophene-tetracyanoquinodimethane complex as a model for π-π donor-acceptor systems. Dispersion-corrected hybrid (B3LYP-D) and double hybrid (B2PLYP-D), hybrid meta (M06-2X and M06-HF), and recently proposed long-range corrected (LC-wPBE, CAM-B3LYP, and w…
The development of polar order in perovskite-type (ABO${}_{3}$) solid solutions of relaxors and normal ferroelectrics is studied on the basis of the temperature dependence of polarized Raman spectra of pure and Ru-doped 0.9PbZn${}_{1/3}$Nb${}_{2/3}$O${}_{3}$-0.1PbTiO${}_{3}$ (PZN-0.1PT) single crystals as well as comp…
In this paper, we report a simple and effective nanofabrication method for the pattern transfer of metallic nanostructures over a large surface area on a glass substrate. Photoresist (PR) nano-patterns, defined by laser interference lithography, are used as template structures where a metal film of controlled thicknes…
Chemisch modifizierte weiche dünne Polydimethylsiloxan(PDMS)-Filme fungieren als Klebeband für die Trennung von halbleitenden (s) und metallischen (m) einwandigen Kohlenstoffnanoröhren (SWNTs). Während das Amin-funktionalisierte A-Klebeband selektiv s-SWCNTs entfernte, verhielt sich das Phenyl-funktionalisierte P-Kleb…
The structural, magnetic properties of the rare-earth perovskites, DyFe${}_{1\ensuremath{-}x}$Mn${}_{x}$O${}_{3}$ (space group, orthorhombic Pbnm), were studied, and the magnetic phase diagram of the solid solution was investigated, which unveiled an unexplored hidden field-induced weak ferromagnetism in the material…
The titanium-doped Ge2Sb2Te5 films were deposited on Si(100) substrates by comagnetron sputtering method. The titanium concentrations in those films were determined by x-ray photoelectron spectroscopy. The influence of Ti doping upon phase change characteristics of the samples has been investigated by x-ray diffractio…
Peeling off nanotubes: Chemically modified soft polydimethylsiloxane (PDMS) thin films act as “scotch tape” for the separation of semiconducting (s) and metallic (m) single-walled carbon nanotubes (SWNTs). Whereas the amine-functionalized A-scotch tape selectively removed s-SWNTs, the phenyl-functionalized P-scotch ta…
Superconducting planar terahertz (THz) metamaterials (MMs), with unit cells of different sizes, are fabricated on 200 nm-thick niobium nitride (NbN) films deposited on MgO substrates. They are characterized using THz time domain spectroscopy over a temperature range from 8.1 K to 300 K, crossing the critical temperatu…
We report a thermally-induced increase of electrical conductivity of polymer/multiwalled carbon nanotube (MWCNT) composites using Diels-Alder-adduct-modified MWCNTs as additives. Thermal treatments of the composites induce the defunctionalization of the modified MWCNTs through retro-DA reaction, consequently to recove…
We present extensive simulations on the TIP4P∕2005 water model showing significantly enhanced small-angle scattering (SAS) in the supercooled regime. The SAS is related to the presence of a Widom line (T(W)) characterized by maxima in thermodynamic response functions and Ornstein-Zernike correlation length. Recent exp…
The modified effective medium approximation model proposed by Minnich and Chen [Appl. Phys. Lett. 91, 073105 (2007)] for the thermal conductivity of nanocomposites is extended for spheroidal inclusions. It is shown that the dependence of the thermal conductivity of nanocomposites on the shape and size of particle incl…
To achieve the applications of graphene, the modulation of its electrical properties is of great significance. The element doping might give a promising approach to produce fascinating properties of graphene. Herein we report a facile chemical doping method to obtain nitrogen-doped (N-doped) few-layer graphene sheets…