Magnetic Nanomaterials and Their Applications

Gun’ko, Yurii K.

doi:10.3390/nano4020505

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…A much stronger chiroptical response is featured by chiral plasmonic complexes1314, chiral semiconductor nanocrystals151617181920212223, quantum-dot molecules24, helix-type quantum-dot supercrystals25, and ‘Swiss-roll’ structures26. While all of them can in principle be used to advance existing and create new techniques for sensing, separation, and delivery of enantiomeric drug molecules, semiconductor nanocrystals appear to be especially promising due to their resistance to photobleaching, tuneable energy spectrum, and highly selective interaction with both enantiomeric molecules and living tissues2728.…”

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confidence: 99%

Chiral nanoparticles in singular light fields

Vovk

Baimuratov

Zhu

et al. 2017

Sci Rep

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The studying of how twisted light interacts with chiral matter on the nanoscale is paramount for tackling the challenging task of optomechanical separation of nanoparticle enantiomers, whose solution can revolutionize the entire pharmaceutical industry. Here we calculate optical forces and torques exerted on chiral nanoparticles by Laguerre–Gaussian beams carrying a topological charge. We show that regardless of the beam polarization, the nanoparticles are exposed to both chiral and achiral forces with nonzero reactive and dissipative components. Longitudinally polarized beams are found to produce chirality densities that can be 109 times higher than those of transversely polarized beams and that are comparable to the chirality densities of beams polarized circularly. Our results and analytical expressions prove useful in designing new strategies for mechanical separation of chiral nanoobjects with the help of highly focussed beams.

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