Materials Literature
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Extracellular matrix (ECM), like biomimetic surface modification of titanium implants, is a promising method for improving its biocompatibility. In this paper chitosan (Chi) and heparin (Hep) multilayer was coated on pure titanium using a layer-by-layer (LbL) self-assembly technique. The Hep-Chi multilayer growth was…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Yuwei Li, Vladimir A. Stoica, Lynn Endicott, Guoyu Wang, Ctirad Uher, Roy Clarke; Coherent optica…
A series of lanthanide-doped nonanuclear yttrium(III) clusters with general formulas (Y(9-x)Ln(x))(acac)(16)(μ(3)-OH)(8)(μ(4)-O)(μ(4)-OH) (Ln = Pr, Eu, Tb, Dy, and Yb) were synthesized. Characterization by single-crystal X-ray diffraction allowed for analysis of relative populations of yttrium (Z = 39) and dopant triv…
The polarization function of electrons with the tilted Dirac cone found in organic conductors is studied using the tilted Weyl equation. The dynamical property is explored based on the analytical treatment of the particle-hole excitation. It is shown that the polarization function as the function of both the frequency…
Previously reported methods for co-crystal synthesis have employed a variety of strategies and these include co-grinding, co-precipitation, growth from the solution, melt and slurry (M. Zaworotko, Polymorphism in Co-crystals and Pharmaceutical Co-crystals, XX Congress of the International Union of Crystallography, Flo…
We report an 75As-nuclear quadrupole resonance (NQR) study on heavily electron-doped LaFeAsO_1-xF_x(La1111) with Tc=5 K. Nuclear spin relaxation rate (1/T1) measurement has revealed that a Hebel-Slichter (HS) peak partially recovers in heavily electron-overdoped regimes where the nesting condition of hole and electron…
Extremely high field effect mobility together with the high surface coverage makes graphene a promising material for high frequency electronics application. We investigate the intrinsic high frequency performance limit of graphene field effect transistors limited by the charge impurity scattering. The output and trans…
Abstract The reaction of the N ‐lithiated 3,6‐di‐ tert ‐butyl‐carbazole ( 2 ) with 2‐bromo‐1,3‐diethyl‐1,3,2‐benzodiazaborole ( 1a ) and 2‐bromo‐1,3‐diphenyl‐1,3,2‐benzodiazaborole ( 1b ) afforded the 2‐ N ‐carbazolyl‐functionalized benzodiazaboroles 3a and 3b as colourless solids in 77 and 73 % yield, respectively.Sy…
Demonstration of a transparent InGaZnO thin film transistor using a graphene composite as the transparent source/drain electrode is presented. Graphene growth was confirmed by Raman spectroscopy, showing all associated peaks at 1350, 1580, and 2700 cm−1. The graphene composite showed a sheet resistance reduction of 15…
The dehydroxylation of Brønsted acid sites (BAS) in Ga-substituted zeolites was investigated at temperatures up to 850 °C using X-ray absorption spectroscopy (XAS), Fourier transform infrared spectroscopy (FTIR), and mass spectrometry-temperature programmed desorption (MS-TPD). X-ray absorption near-edge spectroscopy…
Under the ultralow driven current of 25 μA an ultraviolet (UV)-blue electroluminescence (EL) with a weak defect-related emission could be obtained for the n type (n-) ZnO nanowires (NWs)/insulating (i-) polymer/p-type (p-) GaN light-emitting diode (LED). The i-MgO layer was also explored as a carrier blocking layer fo…
New mixed nanoparticles were obtained by self-aggregation of two amphiplic monomers. The first monomer (C18)(2) L5-Oct contains two C18 hydrophobic moieties bound to the N-terminus of the cyclic peptide octreotide, and spaced from the bioactive peptide by five units of dioxoethylene linkers. The second monomer, (C18)(…
Periodic solid state structures exhibit transmission stopbands for waves of certain frequencies. We demonstrate porous silicon based rugate filters with 40 dB rejection first-order stopbands for longitudinal acoustic waves at hypersonic frequencies and the predicted suppression of higher order bands.
A mark-length write strategy for multiterabit per square inch scanned-probe memories is described that promises to increase the achievable user density by at least 50%, and potentially up to 100% or more, over conventional approaches. The viability of the write strategy has been demonstrated by experimental scanning p…
The design of bistable magnetic systems should enable the storage of information by manipulation of the spin degrees of freedom. However, such a strategy relies on the preparation of target objects, whose environment must be controlled to favor a hysteretic behavior. Here, we report the successful modeling of a highly…
The interaction of H atoms with the curved concentric graphene walls of a multiwall carbon nanotube and the stacked planar graphene sheets of graphite was investigated using a combination of high resolution transmission electron microscopy (HRTEM) in conjunction with electron energy-loss and Raman spectroscopies. Cont…
By using rigorous diffraction theory we investigate the potential for enhancing the efficiency of tandem solar cells by means of various intermediate reflectors and randomly textured surfaces simultaneously. We show that the superior efficiency of tandem solar cells with intermediate reflectors can be further enhanced…
We present a new concept of light-controlled conductance switching based on metal/polymer nanocomposites with dissolved chromophores that do not have intrinsic current switching ability. Photoswitchable metal/PMMA nanocomposites were prepared by physical vapor deposition of Au and Pt clusters, respectively, onto spin-…
Abstract A generalized multiscale modeling framework is described for the digital simulation of a high‐pressure low‐density polyethylene (LDPE) tubular reactor. According to the proposed modeling approach, various models describing the complex physical and chemical phenomena at different length and time scales are lin…
Conjugate to ameliorate! Polymeric drug delivery using a synthetic tubulysin analogue in C26 tumor bearing mice is described. A single dose of this conjugate (shown) resulted in a 90 % increase in the average lifespan of the mice as compared to groups given a phosphate-buffered saline control or the free tubulysin ana…