Materials Literature
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N-type organic field-effect transistors (OFETs), based on two perylene diimide semiconductors (PDI-8 and PDI-8CN 2 ) exhibiting very different air sensitivities, have been fabricated on Si/SiO 2 substrates. These OFETs have been electrically characterized in vacuum both in the dark and under white-light illumination b…
A novel bicomponent photoresponsive nanocomposite consisting of zinc-based anionic clay (ZnLDH)-supported anatase TiO 2 nanoparticles was obtained by the structural reconstruction of the zinc-containing clay in a TiOSO 4 aqueous solution and was characterized by X-ray diffraction, IR spectroscopy, transmission electro…
High-density stretchable electronics are achieved using multilayer interconnects on an elastomeric substrate. Two major challenges associated with stretchable electronics—increasing integration density and improving electrical bonding—have been addressed by our innovative multilayer via-bonding technology. The resulti…
To study the efficiency of maintaining the reduced tissue environment via pre-treatment with natural antioxidant resveratrol in stem cell therapy, we pre-treated male Sprague-Dawley rats with resveratrol (2.5 mg/kg/day gavaged for 2 weeks). After occlusion of the left anterior descending coronary artery (LAD), adult c…
The advent of cryogenic-transmission electron microscopy (cryoTEM) signified a breakthrough in the in situ imaging of hydrated specimens of biological and synthetic origin allowing their study in a state of preservation that is close to native. An inherent limitation to cryoTEM, however, is that images are 2-dimension…
Shigella flexneri is a facultative intracellular pathogen that invades and disrupts the colonic epithelium. In order to thrive in the host, S. flexneri must adapt to environmental conditions in the gut and within the eukaryotic cytosol, including variability in the available carbon sources and other nutrients. We exam…
Structural models of macromolecular assemblies are instrumental for gaining a mechanistic understanding of cellular processes. Determining these structures is a major challenge for experimental techniques, such as X-ray crystallography, NMR spectroscopy and electron microscopy (EM). Thus, computational modeling techni…
We observed a reversible symmetry switch of a cobalt ferrocyanide framework by the alkaline cation exchange and resultant control of the optical properties at room temperature.
One flexible star-shaped bridging molecule tris-(4-cyanophenyl)amine (TCPA) is synthesized from tris-(4-iodophenyl)amine by treatment with CuCN in hexamethylphosphorotriamide (HMPA) as a catalyst in high yield. Anion-template-controlled reactions of TCPA and silver salts give a series of coordination polymers (CPs) wi…
Rapid vascularization of engineered tissues in vitro and in vivo remains one of the key limitations in tissue engineering. We propose that angiogenic growth factors covalently immobilized on scaffolds for tissue engineering can be used to accomplish this goal. The main objectives of this work were: (a) to derive desir…
Abstract A two‐dimensional non‐isothermal model developed for a single intermediate temperature fuel cell with a phosphoric acid (PA) doped PBI membrane is developed. The model of the experimental cell incorporates the external heaters, and the body of the fuel cell. The catalyst layers were treated as spherical catal…
Mechanical properties of tissue scaffolds have major effects on the morphology and differentiation of cells. In contrast to two-dimensional substrates, local biochemical and mechanical properties of three-dimensional hydrogels are difficult to control due to the geometrical confinement. We designed synthetic 3D hydrog…
Current equation of state (EOS) models for xenon show substantial differences in the Hugoniot above 100 GPa, prompting the need for an improved understanding of xenon's behavior at extreme conditions. We performed shock compression experiments on liquid xenon to determine the Hugoniot up to 840 GPa, using these result…
In this work we have fabricated hydrogen gas sensors based on undoped and 1 wt% multi-walled carbon nanotube (MWCNT)-doped tungsten oxide (WO(3)) thin films by means of the powder mixing and electron beam (E-beam) evaporation technique. Hydrogen sensing properties of the thin films have been investigated at different…
We have synthesized polycrystalline samples of the noncentrosymmetric superconductor ${\text{Mo}}_{3}{\text{Al}}_{2}\text{C}$ by arc and RF melting, measured its transport, magnetic and thermodynamic properties, and computed its band structure. Experimental results indicate a bulk superconducting transition at ${T}_{c…
Developing nanostructure junctions is a general and effective way for making photovoltaics. We report Schottky junction solar cells by coating carbon nanotube films on individual CdSe nanobelts with open-circuit voltages of 0.5 to 0.6 V and modest power-conversion efficiencies (0.45-0.72%) under AM 1.5G, 100 mW/cm(2)…
Protein loops are often involved in important biological functions such as molecular recognition, signal transduction, or enzymatic action. The three dimensional structures of loops can provide essential information for understanding molecular mechanisms behind protein functions. In this article, we develop a novel me…
Post-deposition annealing effects on nanomechanical properties of granular TiO2 films on soda-lime glass substrates were studied. In particular, the effects of Na diffusion on the films' mechanical properties were examined. TiO2 photocatalyst films, 330 nm thick, were prepared by dip-coating using a TiO2 sol, and were…
Aqueous two-phase systems (ATPSs) as separation technique have regained substantial interest from the biotech industry. Biopharmaceutical companies faced with increasing product titers and stiffening economic competition reconsider ATPS as an alternative to chromatography. As the implementation of an ATPS is material,…
A new kind of fibrous quantum dot sensitized solar cell has been designed and fabricated by using CdS and CdSe co-sensitized TiO(2) nanotubes on Ti wire as the photoanode and highly active Cu(2)S as the counter electrode. By optimizing the CdSe deposition time and the length of the nanotube, a power conversion efficie…