The effect of polyacrylamide on the crystallization of calcium carbonate: Synthesis of aragonite single-crystal nanorods and hollow vatarite hexagons

Calcium carbonate microcapsules encapsulating biomacromolecules

“…These TEM images suggested that these particles are hollow. The inside parts of the particles are likely to be lighter than the outside, although no clear line often observed in hollow particles [32] was not detected. It is thought that the density inside of this CaCO 3 particle is lower than that of surface (shell) part.…”

“…Many materials chemists examined a number of new fabrication procedures, a part of which are linked to biomineralization research [28]. The preparation of hollow CaCO 3 particles is also a current active field of materials chemistry [29][30][31][32][33]. Furthermore, the utilization of porous CaCO 3 (but not hollow structure) to biomedical applications is a recent topic of inorganic materials science [34][35][36].…”

Calcium carbonate polymorph control using droplet-based microfluidics

“…Additives including certain polymers, [28][29][30] small molecules, 31 and the ammonium ion [32][33][34] can uniquely promote the formation of vaterite, and vaterite has been precipitated in microemulsions of CTAB (cetyl trimethylammonium bromide) and water-in-oil microemulsions of sodium dodecyl sulphate (SDS). 35 A microwave-assisted method was applied to produce vaterite with a range of morphologies from water/ethylene glycol mixtures in the presence of the additives CTAB and SDS, 36 while stacks of vaterite platelets were produced on precipitation from a viscous solution of hydroxyethyl cellulose (HEC).…”

Gold‐Induced Self‐Assembly of Germanium Micropatterns and Their Use as Nanowire Templates

“…One means to demonstrate the uniqueness and utility of such patterns is to evaluate their influence on the controlled growth of additional nanoscale materials such as calcium carbonate. Nanowires of this material have been prepared by several different methods, [9][10][11][12] and it has been proposed as a promising biomaterial for bone replacement and regeneration since it can be easily resorbed by osteoclasts (bone-resorbing cells), which subsequently undergo apoptosis and are then replaced by osteoblasts (bone-producing cells) to generate native bone. [13] To explore the possible patterning applications of Ge micropatterns in the field of biomineralization, such structures were used as templates to grow calcium carbonate nanowires via an electrochemical method using simulated body fluid (SBF) [14] or an aqueous CaCl 2 Á 2H 2 O and NaHCO 3 solution as electrolytes.…”