A5011084234- Calcium Carbonate Crystallization and Inhibition
- Cephalopods and Marine Biology
- Paleontology and Stratigraphy of Fossils
- Physiological and biochemical adaptations
- Bone Tissue Engineering Materials
- Marine Biology and Environmental Chemistry
- Advanced Thermoelectric Materials and Devices
- nanoparticles nucleation surface interactions
- Coral and Marine Ecosystems Studies
- Corrosion Behavior and Inhibition
- Diatoms and Algae Research
- Cell Adhesion Molecules Research
- Osteoarthritis Treatment and Mechanisms
- Bone and Dental Protein Studies
- Graphene research and applications
- Impact of Technology on Adolescents
- Digital literacy in education
- Thermal properties of materials
- Methane Hydrates and Related Phenomena
Weizmann Institute of Science
2014-2022
Ben-Gurion University of the Negev
2015
The rapidly increasing device densities in electronics dictate the need for efficient thermal management. If successfully exploited, graphene, which possesses extraordinary properties, can be commercially utilized polymer composites with ultrahigh conductivity (TC). total potential of graphene to enhance TC, however, is restricted by large interfacial resistance between mediated boundaries. We report a facile and scalable dispersion available nanoplatelets (GnPs) matrix, formed composite an...
Many biogenic minerals are composed of aggregated particles at the nanoscale. These usually form through transformation amorphous precursors into single crystals inside a privileged space controlled by organism. Here, in vitro experiments aimed understanding factors responsible for producing such with particle texture presented. Crystallization is achieved two‐step reaction which calcium carbonate (ACC) first precipitated and then transformed calcite small volumes water presence additives....
Minerals are formed by organisms in all of the kingdoms life. Mineral formation pathways involve uptake ions from environment, transport cells, sometimes temporary storage, and ultimately deposition or outside cells. Even though details how this is achieved vary enormously, need to respect both chemical limitations ion manipulation, as well many "housekeeping" roles cell functioning. Here we provide a perspective on biological biomineralization. Our approach compare contrast involving...
Organisms tune the metastability of amorphous calcium carbonates (ACC), often by incorporation additives such as phosphate ions and water molecules, to serve diverse functions, modulating availability reserves or constructing complex skeletal scaffolds. Although effect additive distribution on ACC was noted for several biogenic synthetic systems, molecular mechanisms which govern stability are not well understood. By precipitating in presence different PO43– concentrations regulating initial...
Calcium storage organelles are common to all eukaryotic organisms and play a pivotal role in calcium signaling cellular homeostasis. In most organelles, the intraorganellar concentrations rarely exceed micromolar levels. Acidic called acidocalcisomes, which concentrate into dense phases together with polyphosphates, an exception. These have been identified diverse organisms, but, date, only cells that do not form biominerals. Recently, compartment storing molar levels of phosphorous was...
Abstract Aragonite skeletons in corals are key contributors to the storage of atmospheric CO 2 worldwide. Hence, understanding coral biomineralization/calcification processes is crucial for evaluating and predicting effect environmental factors on this process. While biomineralization studies have focused adult corals, exact stage at which initiate mineralization remains enigmatic. Here, we show that minerals first precipitated as amorphous calcium carbonate small aragonite crystallites,...
Significance Organisms form mineralized skeletons, many of which are composed calcium salts. Marine organisms extract ions from sea water. One the main unresolved issues is how concentrate by more than three orders magnitude to achieve mineral deposition in their skeleton. Here we determine state each calcium-containing vesicles inside spicule-building cells urchin larvae. We show that within one cell there a wide range concentrations and states solution solid. hypothesize concentration...
ABSTRACT Before March 2020, with the outbreak of COVID-19 pandemic, remote instruction science was only moderately developed compared more traditional approaches for learning science. Since outbreak, however, all formal education systems have been carried out in mode, and outreach activities that take place a research or academic setting usually canceled, there has search innovative to shift digital space. Therefore, development teaching strategies currently focused on activities. In this...
Amorphous calcium carbonate (ACC) has been found in many different organisms. Biogenic ACC is frequently a precursor the formation of calcite and aragonite. The process structural transformation therefore great interest study crystallization pathways biomineralization. Changes prepeak/main peak (L2'/L2) intensity ratio Ca L23-edge X-ray absorption spectroscopy (XAS) Ca-rich particles skeleton-building cells sea urchin larva revealed that precipitates through continuum states rather than...
Abstract Sea urchin larvae have an endoskeleton consisting of two calcitic spicules. The primary mesenchyme cells (PMCs) are the that responsible for spicule formation. PMCs endocytose sea water from larval internal body cavity into a network vacuoles and vesicles, where calcium ions concentrated until they precipitate in form amorphous carbonate (ACC). mineral is subsequently transferred to syncytium, forms. Using cryo-soft X-ray microscopy (cryo-SXM) we imaged intra-cellular...