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NACRE. “The organic matrix of nacre: a peptide CAP-l from a crayfish with a chitin binding motif, a phosphoserin unit for promoting the initial formation of amorphous CaC03 (ACC) and an acidic binding domain for CaCOl led to a mesoClystal film after nucleation ofACC, crystallization and nanoparticle alignment on a film composed of parallel a-chitin microfibrils. Here, calcite nanoparticles were aligned along the chitin fibrils.” https://lnkd.in/eNACsghr View in LinkedIn

THE ANCIENT EMOTIONAL BRAIN. According to Panksepp, “the seven emotional systems can be seen in all mammals, including humans. Each system is based on its own neural network, which can be traced back through our animal ancestors. Predominantly, each system uses its own set of neurochemicals, which have become bases for certain psychoactive drugs.” https://lnkd.in/ePE9qUAi View in LinkedIn

OVER-TRANSITIONS. “On the other hand, if the mutual order of the nanocrystals is continuously brought out of crystallographic register until mutual order is lost, the mesocrystal will transform to an unoriented polycrystal.” https://lnkd.in/eNACsghr View in LinkedIn

“THE OBJECTIVE of the present analysis is to investigate if the consequences of such an information exchange origin are realistic or not; not to formulate a sub-Planckian theory of such interactions.” https://link.springer.com/content/pdf/10.1007/JHEP07(2019)140.pdf View in LinkedIn

TRANSITIONS. “Also, mesocrystals were shown to be intermediates between a classical single crystal and a polycrystal without mutual orientation of its subunits and an extended view on crystallization with a continuous structural transition between single and polycrystal arises. Making the building units of a 3D·aligned mesocrystal smaller via clusters to ions will be the transition of a mesocrystal to a single crystal.” https://lnkd.in/eNACsghr View in LinkedIn

CHOSEN BY EVOLUTION. “In addition, the number of known mesocrystal systems has much increased spanning from biominerals to functional materials. The fact that mesocrystals are found for biominerals, which are evolutionary highly optimized materials, shows that obviously, nonclassical crystallization is an advantageous crystallization pathway, which is worth to apply for the synthesis of advanced materials with improved properties.” https://lnkd.in/eNACsghr View in LinkedIn

MESOCRYSTAL FORMATION. “However, while the mechanism of oriented attachment has been revealed, mesocrystals can form by various mechanisms and consequently, relatively little is yet known about the processes leading to mesocrystal formation.” https://lnkd.in/eNACsghr View in LinkedIn

MESOCRYSTALS. “The notation "mesocrystal" is an abbreviation for a mesoscopically structured crystal, which is an ordered superstructure of crystals with mesoscopic size (1-1000nm).” https://lnkd.in/eNACsghr View in LinkedIn

FRAGMENT FROM NATURE for this and next weekend discusses how biominerals in nature such as iridescent shell nacre, sea urchin spines, and corals have physical properties that far exceed their constituent parts, and the whole is greater than the sum of the parts, by an emergent process. It turns out most of these are ‘mesocrystals’, which are known to chemists, and have fascinating properties. https://lnkd.in/eNACsghr View in LinkedIn

One of the stranger monuments in Barcelona, a truly claustrophobic symbol of war. View in LinkedIn