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Although nanorobots can potentially enhance nano-drug delivery methods, there remains a significant challenge to manufacturing magnetically controlled nanorobots with a size suitable for drug delivery in complex in vivo environments. Due to the relative difficulties in manufacturing nanoscale robots, most of the current research concentrated on the fabrication and functionalization of microscale and milliscale robots. In addition, the nanorobots exhibit excellent cell compatibility with various types of cells, including macrophage cells. The L-shaped nanorobots also demonstrated robust stability during the long-term cell culture medium immersion experiment.
Source link: https://doi.org/10.1038/s41598-022-17053-x
We discover that purified achiral gold tetrahedron-shaped nanoparticles assemble into two-dimensional superlattices with planar chirality under a blend of repulsive electrostatic and attractive van der Waals and depletion forces. A formation scheme is suggested in which the chiral phase nucleates from within a two-dimensional achiral phase by clockwise or counterclockwise rotation of tetrahedra about their central axis. The construction of nanostructures with chiral symmetry often requires chiral directing agents at a smaller length scale.
Source link: https://doi.org/10.1038/s41467-022-31868-2
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