Concept

Silicate

Publications associées (89)

From oxide surface to organic transistor properties: the nature and the role of oxide gate surface defects

Libero Zuppiroli, Stéphane Suarez, Franziska Dora Fleischli

By applying various surface treatments to the oxide gate of pentacene transistors, both in vacuum (H2, O2 and Ar plasma treatments) and in aqueous solution, we were able to vary the balance between oxygen-free radicals (Si•), oxygen-centered radicals (Si−O ...

American Chemical Society2010

Physical and microstructural aspects of sulfate attack on ordinary and limestone blended Portland cements

Karen Scrivener, Barbara Lothenbach

The consequences of external sulfate attack were investigated by traditional test methods, i.e. length and mass change, as well as by a newly developed, surface sensitive ultrasonic method, using Leaky Rayleigh waves (1 MHz). The macroscopic changes are di ...

2009

Drop-On-Demand Inkjet Printing of SU-8 Polymer

Jürgen Brugger, Alcherio Martinoli, Vahid Fakhfouri, Grégory Mermoud, Joo Yeon Kim

This paper presents drop-on-demand inkjet printing of SU-8 on functionalized surfaces for direct printing of computer controlled polymer patterns. The high viscosity of SU-8 required an in-depth investigation of the print parameters such as pulse amplitude ...

2009

Composites and methods for their production

Yves Leterrier, John Christopher Plummer, Marlene Rodlert

Intercalates and exfoliates formed from layered materials and dendritic polymers are disclosed, together with the uses of these materials, e.g. in producing composite materials. The dispersion of layered materials in a dendritic polymer matrix (hyperbranch ...

2008

A thermodynamic and experimental study of the conditions of thaumasite formation

Karen Scrivener, Barbara Lothenbach, Thomas Schmidt

The formation of thaumasite was investigated with the progressive equilibrium approach (PEA). This approach experimentally simulates the conditions of various levels of sulfate addition in hardened cement pastes. The influence of limestone, time, C(3)A con ...

Elsevier2008

Dynamics and disorder in surfactant-templated silicate layers studied by solid-state NMR dephasing times and correlated line shapes

David Lyndon Emsley, Bradley Floyd Chmelka

Surfactant-templated layered silicates are shown to possess complex compositional, structural, and dynamic features that manifest rich and interrelated order and disorder at molecular length scales. Temperature-dependent 1D and 2D solid-state Si-29 NMR mea ...

AMER CHEMICAL SOC2008

Proteins in Mesoporous Silicates

Liang Qiao, Yun Liu

Mesoporous silicates (MPS) provide a means of immobilizing proteins and enzymes in a stable environment while retaining physiological function. A systematic methodology of assessing the potential of immobilising a given protein on to MPS has been developed ...

American Chemical Society2008

Importance Of Microstructural Understanding For Durable And Sustainable Concrete

Karen Scrivener

This paper presents the importance of microstructural studies for understanding concrete durability. Three examples - sulfate attack; alkali silica reaction and bacteriogenic corrosion in sewers are used to illustrate the pitfalls which can arise from conv ...

R I L E M Publications, 91 Ave President Wilson, 94235 Cachen, France2008

Shock-induced transformation of olivine to a new metastable (Mg,Fe)(2)SiO4 polymorph in Martian meteorites

Philippe Gillet, Pierre Beck

Transient high pressures and temperatures generated during meteor or asteroid impacts induce mineral phase transformations that can mimic those occurring at depth within the silicate mantle of terrestrial planets. Olivine (alpha-(Mg,Fe)(2)SiO4), the primar ...

2007

Synthesis, characterization and X-ray crystal structures of lithium coordination polymer from cyclobutane-1,1-dicarboxylic acid

Zhaofu Fei, Dongbin Zhao

A novel lithium salt, cyclobutane-1,1-dicarboxylic lithium was synthesized and characterized by NMR, IR, ESI-MS, X-ray single crystal analysis, and TG/DTG (TGA) thermal analysis. The crystal structure information reveals the coordination polymer nature and ...

2007

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