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Showing 1 to 10 of 10 for “"amorphous calcium carbonate"”.
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Establishing a physical and chemical framework for Amorphous Calcium Carbonate (ACC) biomineralization
… that involve metastable intermediates. Biogenic calcium carbonate minerals are now recognized to develop by aggregating molecules or clusters to form amorphous phases that later transform to one or more crystalline polymorphs. Amorphous calcium carbonate (ACC) is now recognized as a precursor to …
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Influence of additives on stabilization and mineralization pathway of amorphous calcium carbonate nanoparticles
Amorphous calcium carbonate (ACC) is of high interest because of its critical role in biomineralization. ACC can be a precursor of crystalline calcium carbonate phases that are more energetically stable. ACC is not only stored in organisms for long time for the subsequent mineralization of new …
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Influence of Solution Composition and Temperature on the Strontium Content of Amorphous Calcium Carbonate and Subsequent Calcite
The Sr/Ca ratios in calcium carbonate fossils are used by the paleooceanographic community to infer past environmental conditions, such as sea surface temperature and ocean chemistry. The processes of biogenic calcification that produce these chemical signatures are complex and not fully …
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Calcification by amorphous carbonate precursors: Towards a new paradigm for sedimentary and skeletal mineralization
… suggests mineralization proceeds through amorphous calcium carbonate (ACC) precursors. The implications of this strategy in carbonate crystallization are widespread, particularly for understanding factors controlling impurity and isotopic signatures in calcium carbonates. The first chapter …
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Establishing the Physical Basis for Calcification by Amorphous Pathways
… shift with the realization that the formation of carbonate minerals with diverse compositions and textures can be understood within the framework of multiple pathways to mineralization. A variety of common minerals can form via an amorphous pathway, where molecules or clusters aggregate to form a …
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Effect of Bacterial Strain on MICP and its Application for the Erosion Control of Fine Sands
… In this context, microbial induced calcium carbonate (CaCO3) precipitation (MICP) could be used to enhance the erosion performance of soils. This research investigates the influence of the CaCO3 microstructure on the macromechanical erosion response of fine sands by combining …
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Biomolecular Controls on Calcium Carbonate Formation by Amorphous and Classical Pathways: Insights from Measurements of Nucleation Rates and Isotope Tracers
… are further complicated by the realization that carbonate biominerals can form by an amorphous to crystalline transformation process, which has prompted the question of how chemical signatures are recorded during mineralization. Investigations of mineralization processes such as the kinetics of …
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Linking the kinetics of formation and growth to the mechanical properties of calcium carbonate composites
Calcium carbonate, the most common among other biogenic minerals, is widely used in skeletal components in marine organisms. These organisms exploit varied physical and chemical interactions between calcium carbonate and organic additives to direct the precipitation process through thermodynamic …
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Complex bioactive fiber systems by means of electrospinning
… inorganic/organic hybrid fabrication of PCL with calcium carbonate or calcium phosphate, two biorelevant minerals. Such composite structures are attractive for the potential improvement of properties such as stiffness or bioactivity. It was possible to encapsulate nano and mixed sized …
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A novel view on the early stage of crystallization
… on the early stage of crystallization utilizing calcium carbonate as a model system. Calcium carbonate is of great economical, scientific and ecological importance, because it is a major part of water hardness, the most abundant Biomineral and forms huge amounts of geological sediments thus …