Month: September 2022

SELF-ASSEMBLY. “In the majority of known cases, mesocrystals form nanoparticles in solution, which aggregate and arrange in crystallographic order-even without any additives (Fig. 1b). This mechanism for mesocrystal formation heavily relies on particle interaction forces as well as on external forces.” https://lnkd.in/eNACsghr View in LinkedIn

ANISOTROPIC FORCES. “The ordering physical fields/forces like electric, magnetic, or dipole fields as well as polarization forces have to be anisotropic to allow for an ordering of the nanoparticle units. The nanoparticles in turn also have to be anisotropic with respect to their interaction potentials so that an ordering can take place.” https://lnkd.in/eNACsghr View in LinkedIn

ANISOTROPY SOURCES. “Such anisotropy could for example be oppositely charged counter faces of a crystal, a magnetic or dipole moment along one nanooystal axis or differences in the polarizability along different crystallographic directions. The anisotropy could already be present in the nanocrystal itself or be induced by face selective additive adsorption.” https://lnkd.in/eNACsghr View in LinkedIn

NEW VIEW OF EVOLUTION. “The central argument is that evolution is as much an ecological process as a genetic process. Adaption and adaptive diversification are, at their core, the results of the intermingling of molecular and ecological processes.” https://lnkd.in/eKTFRHvN View in LinkedIn

More candy box architecture in Barcelona. View in LinkedIn

MAGNETIC ALIGNMENT. “In an impressive work, Kniep and coworkers could show intrinsic electric field lines around a fluorapatite-gelatin mesocrystal by electron holography pointing out the importance of the organic component, which represents aligned dipoles in this case.” https://lnkd.in/eNACsghr View in LinkedIn

BIOELECTRICITY. “These dipoles of aligned triple helical protein fibers on the nanometer scale can build up a macroscopic dipole ifthey are aligned along the mesocrystal c-axis. This showed for the first time the direct correlation between intrinsic electric fields and the self-organized growth of fluoroapatite mesocrystals.” https://lnkd.in/eNACsghr View in LinkedIn

ELECTRICALLY DRIVEN. “Indeed, external electric fields can be used to create 2D and 3D mesocrystals as demonstrated for CdS nanorods and for large areas of several square micrometers if monodisperse CdSe/CdS nanorods were used.” https://lnkd.in/eNACsghr View in LinkedIn

MAGNETICALLY DRIVEN. “Besides electric fields, magnetic fields can be applied as external force for the orientation of nanocrystals to mesocrystals. Large area (10 fLm) mesocrystals with more than lOG nanocubes as well as 3D mesocrystals could be produced by this simple procedure.” https://lnkd.in/eNACsghr View in LinkedIn

FORCE FIELDS. “This shows that the magnetic field assisted formation of mesocrystals from mag- netic nanoparticles is controlled by the relative strength of the interplay of van der Waals interaction, steric repulsion and directional dipolar interactions between the nanoparticles supported by the external magnetic field.” https://lnkd.in/eNACsghr View in LinkedIn