Publications related to Biogenic silica

Grazing angle X-ray fluorescence from periodic structures on silicon and silica surfaces

Various 3-dimensional nano-scaled periodic structures with different configurations and periods deposited on the surface of silicon and silica substrates were investigated by means of the grazing incidence and grazing emission X-ray fluorescence techniques ...

Pergamon-Elsevier Science Ltd2014

The Effect of Aluminum in Solution on the Dissolution of Amorphous Silica and its Relation to Cementitious Systems

Karen Scrivener, Theodor Alexandre Emmanuele Chappex

One of the most serious causes of degradation of concrete is the alkalisilica reaction. Amorphous silicates present in certain aggregates react with the alkaline pore solution of the concrete to form a gel, which absorbs water and swells, leading to the ex ...

Wiley-Blackwell2013

Dielectric properties of silver nanoparticles coated with silica shells of different thicknesses

Heinrich Hofmann, Jose Enrico Quijano Quinsaat

Core/shell nanoparticles having metallic silver nanoparticle cores of similar to 38 nm in diameter and silica shells of different thicknesses ranging from similar to 3.6-20 nm were prepared. For the silica coating, a slightly modified Stober method was use ...

RSC Publishing2013

Enhancing the open circuit voltage of dye sensitized solar cells by surface engineering of silica particles in a gel electrolyte

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Lioz Etgar, Guillaume Schuchardt

We prepared a quasi-solid electrolyte for dye-sensitized solar cells (DSSCs) that consist of ionic liquid and modified silica particles. Commercial bare silica F5 particles and modified silica F5 by NH2 and NH3+ groups were prepared, and fully characterize ...

Royal Society of Chemistry2013

UV-cured transparent magnetic polymer nanocomposites

Yves Leterrier, Marco Sangermano, Tommaso Nardi

Magnetite nanoparticles are synthesized by thermal decomposition of Fe(acac)(3) and subsequently coated with a silica shell exploiting a water-in-oil synthetic procedure. The as-produced nanopowder is mixed with a photocurable hyperbranched resin and the p ...

2013

Skeletal growth dynamics linked to trace-element composition in the scleractinian coral Pocillopora damicornis

Anders Meibom, Jaroslaw Hubert Stolarski, Isabelle Domart-Coulon, Christophe Kopp

The micro-and ultra-structural skeletal growth dynamics of the scleractinian coral Pocillopora damicornis (Linnaeus 1758) was studied with pulsed Sr-86-labeling and high spatial resolution NanoSIMS isotopic imaging. Average extension rates for the two basi ...

Pergamon-Elsevier Science Ltd2012

The influence of aluminium on the dissolution of amorphous silica and its relation to alkali silica reaction

Karen Scrivener, Theodor Alexandre Emmanuele Chappex

It is known that the addition of supplementary cementitious materials (SCMs) in concretes reduces or even stops expansion due to alkali silica reaction (ASR). It has been widely shown that the main mechanism controlling ASR in blends is the alkali fixation ...

Pergamon-Elsevier Science Ltd2012

The role of aluminium from supplementary cementitious materials in controlling alkali-silica reaction

Theodor Alexandre Emmanuele Chappex

Alkali silica reaction (ASR) is a long-term reaction between certain aggregates containing amorphous silicate phases and the alkalis from the cement paste. These silicates react with the alkalis present in the pore solution of the cement paste and form an ...

EPFL2012

Gasification of Hay in a Bench Scale Fluidised Bed Reactor with Emphasis on the Suitability for Gas Turbines

Christian Ludwig, Marco Wellinger

Thermal gasification of pasture plants (hay) is so far considered as difficult mainly due to the high amount of inorganics (ash, alkalis). Under certain circumstances it could be an additional resource for power production. There has been some experiments ...

Elsevier2012

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Biogenic silica

Grazing angle X-ray fluorescence from periodic structures on silicon and silica surfaces

Sub-Antarctic marine aerosol: dominant contributions from biogenic sources

The Effect of Aluminum in Solution on the Dissolution of Amorphous Silica and its Relation to Cementitious Systems

Dielectric properties of silver nanoparticles coated with silica shells of different thicknesses

Enhancing the open circuit voltage of dye sensitized solar cells by surface engineering of silica particles in a gel electrolyte

UV-cured transparent magnetic polymer nanocomposites

Skeletal growth dynamics linked to trace-element composition in the scleractinian coral Pocillopora damicornis

The influence of aluminium on the dissolution of amorphous silica and its relation to alkali silica reaction

The role of aluminium from supplementary cementitious materials in controlling alkali-silica reaction

Gasification of Hay in a Bench Scale Fluidised Bed Reactor with Emphasis on the Suitability for Gas Turbines

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Sub-Antarctic marine aerosol: dominant contributions from biogenic sources

Grazing angle X-ray fluorescence from periodic structures on silicon and silica surfaces

The influence of aluminium on the dissolution of amorphous silica and its relation to alkali silica reaction

Dielectric properties of silver nanoparticles coated with silica shells of different thicknesses

Gasification of Hay in a Bench Scale Fluidised Bed Reactor with Emphasis on the Suitability for Gas Turbines

Skeletal growth dynamics linked to trace-element composition in the scleractinian coral Pocillopora damicornis

The Effect of Aluminum in Solution on the Dissolution of Amorphous Silica and its Relation to Cementitious Systems

Enhancing the open circuit voltage of dye sensitized solar cells by surface engineering of silica particles in a gel electrolyte

The role of aluminium from supplementary cementitious materials in controlling alkali-silica reaction

UV-cured transparent magnetic polymer nanocomposites