This week in Nature: Twist factor – Nanosheets form photonically active bow ties with tunable geometry. Browse the full issue here:
Chiral molecules are structures that have the same composition but are mirror images of each other. In this week’s issue,use self-assembling nanosheets that form bow-tie-like microparticles to examine whether it is practical to use geometrical measures of chirality for chemical structures.
The nanosheets hierarchically assemble into nanoribbons that stack together and twist to look like bow ties , with the direction of twist depending on the chirality of the molecules used to form the nanosheets. Crucially, the twist angle of the bow ties is highly controllable. The team found that the various bow-tie particles interacted differently with circularly polarized light depending on their chirality measure.
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