Results 11 to 20 of about 4,430 (207)
Unlocking the mysterious polytypic features within vaterite CaCO3
Nature Communications, 2023 Calcium carbonate (CaCO3), the most abundant biogenic mineral on earth, plays a crucial role in various fields such as hydrosphere, biosphere, and climate regulation.
Xingyuan San +10 more
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Crystals, 2020 Investigation on the formation mechanism of crystals via amorphous precursors has attracted a lot of interests in the last years. The formation mechanism of thermodynamically meta-stable vaterite in pure alcohols in the absence of any additive is less ...
Li Qiao +3 more
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Vaterite Stability in the Presence of Chromate [PDF]
Spectroscopy Letters, 2011 Vaterite aggregates grown in Cr(VI)-bearing silica gel were studied by combining scanning electron microscopy and Raman spectroscopy. All the vaterite samples were spherical aggregates consisting of lens-shaped individuals, and their morphology was distinctive for vaterite.
Cruz, Juncal.A. +3 more
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Vaterite Dissolution: Mechanism and Kinetics
The Journal of Physical Chemistry CThe dissolution of porous spherulitic, vaterite particles in aqueous solution is investigated via microscopic monitoring of their size as a function of time. The latter is shown to provide a clear, generic distinction between dissolution controlled either by the rate of a surface-controlled reaction or via dissolution under conditions where the ...
Milner, MP, Yang, M, Compton, RG
core +5 more sources
Quantum Diamond Microscopy of Individual Vaterite Microspheres Containing Magnetite Nanoparticles [PDF]
NanomaterialsBiocompatible vaterite microspheres, renowned for their porous structure, are promising carriers for magnetic nanoparticles (MNPs) in biomedical applications such as targeted drug delivery and diagnostic imaging.
Mona Jani +8 more
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Systematic Study of Preparing Porous CaCO3 Vaterite Particles for Controlled Drug Release [PDF]
NanomaterialsPorous CaCO3 vaterite particles have been widely used as drug carriers for biomedical applications due to their high biocompatibility and low production costs.
Nan Zhang +3 more
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Terahertz spectroscopy for analysis of vaterite-to-calcite crystal phase transition induced by distilled water. [PDF]
PLoS ONEVaterite is a crystalline polymorph of anhydrous calcium carbonate (CaCO3), which exhibits relatively low stability compared to other two polymorphs, calcite and aragonite.
Shuhei Okada +2 more
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Optothermal Needle‐Free Injection of Vaterite Nanocapsules
Advanced Science, 2023 AbstractThe propulsion and acceleration of nanoparticles with light have both fundamental and applied significance across many disciplines. Needle‐free injection of biomedical nano cargoes into living tissues is among the examples. Here a new physical mechanism of laser‐induced particle acceleration is explored, based on abnormal optothermal expansion ...
Kislov, Denis +6 more
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Enhanced Vaterite And Aragonite Crystallization At Controlled Ethylene Glycol Concentrations [PDF]
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2019 Calciumcarbonate (CaCO3) has three distinct anhydrous polymorphs, namelyvaterite, aragonite and calcite. Although there is a high demand for aragoniteand vaterite polymorphs for biomedical use, their unstable nature makes itchallenging to synthesize them
Derya Kapusuz +2 more
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Confinement stabilises single crystal vaterite rods [PDF]
Chem. Commun., 2014 Single-crystals of vaterite, the least-stable anhydrous polymorph of CaCO3, are rare in biogenic and synthetic systems. We here describe the synthesis of high aspect ratio single crystal vaterite rods under additive-free conditions by precipitating CaCO3 within the cylindrical pores of track-etch membranes.
Schenk, AS +4 more
openaire +5 more sources