Materials Literature
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The reciprocity relation of McCumber which states that the emission and absorption spectra of broad solid-state laser transitions are related by the classical Boltzmann factor is critically examined. It is argued that it should be treated as an exact property of homogeneously broadened amorphous host gain media at roo…
InGaN-based light-emitting diodes (LEDs) with nanoporous microhole array (NMA) structures were fabricated through photoelectrochemical wet oxidation and oxide-removing processes. The average size of the nanoporous structure at the microhole regions was measured at 60-80 nm. Forward voltages were measured at 3.47 and 3…
Upon absorption of a photon, the 1-methyl-7-oxyquinolinium zwitterion in neutral water undergoes a proton-transfer cycle involving protonation at the lowest excited triplet state and redeprotonation at the ground state. On one hand, the proton transfer of a water molecule to the triplet-state zwitterion takes place on…
The influence of nepheline syenite on physicomechanical properties of extruded ceramic Raschig ring was investigated. Industrial kaolin was used as reference composition and different amounts of kaolin were replaced with nepheline syenite ranging 5–15 wt%. The laboratory experimental results showed that the use of 5 w…
TWIP(twinning induced plasticity) steels possess very high plasticity and high strength.It has been pointed out that deformation twinning plays an important role in controlling the deformation behavior,which divides grains into nano-scale layer-like structures to result in high strain-hardening rate or the so-calledTW…
In this work, we show that by using single negative (SNG) media, the sensitivity of open-ended near-field waveguide probes can be enhanced. The enhancement is due to the evanescent wave amplification property of SNG media. As a demonstration of the efficacy of the proposed SNG-enhanced probe, we present a numerical st…
As the industry moves towards sub-65nm technology nodes, the mask inspection, with increased sensitivity and shrinking critical defect size, catches more and more nuisance and false defects. Increased defect counts pose great challenges in the post inspection defect classification and disposition: which defect is real…
We fabricated a highly stable and sensitive gas sensor based on single-walled carbon nanotubes (SWNTs) protected by metal-oxide coating layer. SWNTs were deliberately decorated with 2–5 nm of oxygen-deficient SiO x and AlO x by pulsed laser deposition, followed by annealing under Ar/H 2 ambient. Surpassing the as-grow…
By tuning wavelengths of the femtosecond pump and probe pulses we mapped the nonlinear absorption of copper-glass nanocomposites within 520-620 nm range. At the pump intensity of 3 GW/cm(2), the induced transmission rise was as high as 20%. The imaginary part of the third-order optical susceptibility of the nanocompos…
Director fields around spherical and cylindrical micro particles embedded in a uniformly aligned nematic liquid crystal are investigated by means of fluorescence confocal polarizing microscopy. Both dipolar configurations (point-like defects) and quadrupolar configurations (ring-like defect lines) are observed for sph…
A novel crosslinked smectic-C Main-Chain Liquid-Crystalline Elastomer (MCLCE) has been synthesized by polycondensation of vinyloxy-terminated mesogens, tetramethyldisiloxane and pentamethylpentaoxapentasilecane. The introduction of the functional vinyloxy group allows the synthesis of well-defined networks having low…
Ageing in systems without detailed balance is studied in bosonic contact and pair-contact processes with Levy diffusion. In the ageing regime, the dynamical scaling of the two-time correlation function and two-time response function is found and analysed. Exact results for non-equilibrium exponents and scaling functio…
The electrochemically induced desorption of Oregon green labeled fibrinogen layers from clean gold surfaces at negative potentials has been probed using capacitance, fluorescence microscopy, and atomic force microscopy. Capacitance measurements on fibrinogen layers indicate that desorption occurs at potentials more ne…
The coordination properties of N,N'-bis[4-(4-pyridyl)phenyl]acenaphthenequinonediimine (L(1)) and N,N'-bis[4-(2-pyridyl)phenyl]acenaphthenequinonediimine (L(2)) were investigated in self-assembly with palladium diphosphane complexes [Pd(P;P)(H(2)O)(2)](OTf)(2) (OTf = triflate) by using various analytical techniques, i…
MnO‐added Bi 0.485 Na 0.425 K 0.06 Ba 0.03 TiO 3 solid solution around the morphotropic phase boundary is produced by the solid oxide reaction process. All the specimens maintain a coexistence of rhombohedral and tetragonal phases, while the suitable addition of MnO apparently promoted grain growth. Besides, the suita…
The thermal stability of nanostructured Ce(0.5)Zr(0.5)O(2) powders prepared by the Pechini method was studied on the nanometric scale by X-ray diffraction (XRD), energy-dispersive spectrometry (EDS), transmission electron microscopy (TEM), nuclear magnetic resonance (NMR), and Raman techniques. Obtained results demons…
The behavior of particles that are reflected in a turbo molecular pump is investigated by measuring particle trajectories and the number of particles that fall on a wafer in a plasma etching apparatus. Some scattered particles collide with the wafer at high velocity, which damage fine patterns of the photoresist on th…
Purpose The purpose of this paper is to evaluate the effect of different amounts of sodium hydroxide (NaOH) introduced during the resin synthesis on the properties of bark‐phenol‐formaldehyde (BPF) adhesives aims at achieving a balance between storage life and other properties of BPF adhesives. Design/methodology/appr…
Spatiotemporal correlations in start-up flows of attractive colloids are explored by numerical simulations as a function of their volume fraction and shear rate. The suspension is first allowed to flocculate during a time tw, then the stress necessary to induce its flow is computed. We find that, at low volume fractio…
Calcium phosphate (CaP) nanoparticles with particle sizes <100 nm were prepared and conjugated with lauric acid. This was achieved by first activating the phosphate group of CaP and conjugating it with lauric acid via acid chloride route incorporating chitosan as a spacer. Insulin was loaded and the nanoparticles were…