Materials Literature
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The electron-phonon(e-p) interaction in Pentacene (Pn) films grown on Bi(001) was investigated using photoemission spectroscopy. The spectra reveal thermal broadening from which we determine an e-p mass enhancement factor of lambda = 0.36 +/- 0.05 and an effective Einstein energy of omega_E = 11 +/- 4 meV. From omega_…
We study the effect of insulating oxide substrates on the energy band structure of monolayer and bilayer graphene using a first principles density functional based electronic structure method and a local exchange correlation approximation. We consider two crystalline substrates, SiO2 (or alpha-quartz) and Al2O3 (alpha…
We present here molecular dynamics simulations of deeply supercooled SPC/E water confined in a cylindrical pore of MCM-41 silica material. By a layer analysis of the tag particle density correlators, we are able to extract the α-relaxation time of the mobile portion of the confined water. This relaxation time is the s…
A method was developed for the preparation of microcapsules containing a reactive amine with potential applications in self-healing polymers. Amine core microcapsules were prepared by interfacial polymerization of an isocyanate and an amine stabilized by an inverse Pickering emulsion. Microcapsules were successfully i…
Effects of hydration on silk fibroin film properties were investigated for water-annealed and MeOH-treated samples. Hydration increased thickness by 60% for MeOH-immersed films, while water-annealed samples remained constant. MeOH-immersed films showed an 80% mass loss due to water, while water-annealed lost only 40%.…
The oxidative dissolution of silver nanoparticles (AgNPs) plays an important role in the synthesis of well-defined nanostructured materials, and may be responsible for their activities in biological systems. In this study, we use stopped-flow spectrophotometry to investigate the kinetics and mechanism of the oxidative…
This Perspective summarizes the recent advances and perspective in three-dimensional (3D) imaging techniques and their applications to polymer nanostructures, e.g., microphase-separated structures of block copolymers. We place particular emphasis on the method of transmission electron microtomography (TEMT). As a resu…
The study of clusters has provided a tangible link between local geometry and bulk condensed matter, but experiments have not yet systematically explored the thermodynamics of the smallest clusters. Here we present experimental measurements of the structures and free energies of colloidal clusters in which the particl…
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTCarbon Nanotube−Inorganic HybridsDominik Eder*View Author Information Department of Materials Science and Metallurgy, University of Cambridge, New Museums Site, Pembroke Street, Cambridge CB2 3QZ, United Kingdom* E-mail: [email protected]Cite this: Chem. Rev. 2010, 110, 3, 13…
Difluoroboron avobenzone (BF(2)AVB), a simple boron complex of a commercial sunscreen product, exhibits morphology-dependent emission and mechanochromic luminescence in the solid state. When scratched, smeared, or even gently touched, the emission color of BF(2)AVB films is significantly red-shifted under UV excitatio…
Spintronik, auch bekannt als Magneto-Elektronik, ist eine sich entwickelnde Technologie basierend auf der Detektion and Manipulation des Elektronenspins zusätzlich zur elektrischen Ladung. Eine hohe Spinpolarisation der Ladungsträger am Fermi-Niveau ist für Spintronikanwendungen von wesentlicher Bedeutung. Einige der…
Dieses Kapitel beinhaltet: Elastische und plastische Verformung Der Zusammenhang zwischen Spannung und Dehnung Mechanisches Versagen von Materialien Viskoelastizität Mechanische Moduln von biologischen Materialien Flüssigkeiten und Viskosität Adhäsion und Reibung Mechanisch geregelte Systeme Literaturverzeichnis
In this work were prepared glasses by using TEOS as precursor and Zn ions were added trough an aqueous solution before the gellification step. The preparation of this system is room temperature and the technique is very simple. These glasses were characterized by x-ray difraction, optic absorption, FT-IR and Raman spe…
This work studies the spectroscopic behavior of Holmium Oxide (Ho2O3 /Ho (III)) doped borax glasses to investigate its optical properties. Spectroscopic parameters like Racah (E1, E2 and E3), spin orbit (4f) and Judd-Ofelt intensity parameters (2, 4, and 6) have been calculated. Also radiative and nonradiative transit…
In this work were explored two complex agents for growth CdS thin films by using chemical bath deposition. The first one - acetylacetone - lead us a homogeneous thin films, with hexagonal structure, 2.37 eV of energy bandgap and grain size of 3 nm. Whereas, for the second compound - glycine - the films also show hexag…
This work is about the production of metal nanopowders by pulsed sonoelectrochemical technique, optimized at University of Padova. The method couples an electrochemical process with the employment of high power ultrasound: an ultrasonic horn is also used as the working electrode and it is subjected to pulsed applied g…
Switching devices are key components in any power electronic circuit or system as they control and limit the flow of power from the source to the load. Their power level requirements (current & voltage) and switching frequency are continually increasing in the power electronic industry, and this demands larger and fas…
Lithium ion gel type electrolytes have been synthesized using an imidazolium-based Room Temperature Ionic Liquid (RTIL), 1–propyl–3–methylimidazolium tetrafluoroborate (PMImBF4), poly (vinylidenefluoride-co-hexafluoropropylene) (PVdF-HFP) copolymer and Propylene Carbonate (PC) as the solvent. PMImBF4 has been synthesi…
In der vorliegenden Arbeit sollten die Auswirkungen von Wärmebehandlungen kurzer Dauer (t ? 30min) bei verschiedenen Temperaturen auf die Af-Temperatur, die Umwandlungscharakteristik und die Dicke der erzeugten Oxidschichten im Zusammenhang mit deren Verhalten und Schädigung bei pseudoelastischer Verformung des Grundm…
Psu, a coat protein from bacteriophage P4, inhibits Rho-dependent transcription termination both in vivo and in vitro. The Psu protein is alpha-helical in nature and appeared to be a dimer in solution. It interacts with Rho and affects the ATP binding and RNA-dependent ATPase activity of Rho, which in turn reduces the…