| FEATURES & INNOVATIONS |
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An artistic view of a dielectric metasurface, a phased array of dielectric nanoantennas, controlling the properties (phase and amplitude) of light.
An artistic view of a magnetic dipole resonance in a high-refractive-index dielectric sphere.
similar types of optically induced interactions of magnetic moments exist in chains of silicon particles3
. “Such magnetic interactions of
silicon particles can far outperform waveguides based on plasmonics and conventional silicon photonics,” says Luk’yanchuk. Luk’yanchuk, Kuznetsov and their team
have experimentally demonstrated these resonances in silicon nanoparticles4
. The
team was also the first to experimentally show unique directional light scattering by silicon nanoparticles, which demonstrates their promising nanoantenna properties5
. And the
researchers were the first to experimentally show large enhancement of the electric and magnetic fields of light in close proximity to dielectric antennas made from two silicon nanoparticles placed very close to each other6 According to Google Scholar, the papers
In 2016, the Institute of Physics Singapore
awarded Luk’yanchuk the World Scientific Physics Research Award and Gold Medal for his outstanding contributions to physics research in the country. That same year, Kuznetsov was chosen as the recipient of the Institution of Engineering and Technology’s A F Harvey Engineering Research Prize for “his outstanding contributions in the field of lasers and optoelectronics and his pioneering research on a new branch of nanophotonics: optically resonant dielectric nanostructures and dielectric nanoantennas.”
.
describing these findings have been cited more than 1,000 times, reflecting the enormous impact that the team’s work has had in the field. Such is their reputation in this area that a recent review they wrote on the emerging field was published in the prestigious journal Science7
. In a 2015 study, the team, together with
researchers from Australia and Germany, experimentally demonstrated a very unusual optical effect in nanoscale disks of silicon — patterns of radiation that do not emit or scatter light8
. Such radiation modes could be used to
produce tiny nanoscale lasers. The team has also showed how arrays of such silicon disks can precisely control the phase and amplitude of light, forcing it to bend, focus, or create high-resolution holographic images9,10
. 44 A*STAR RESEARCH
A bright future The team is excited about the potential of dielectric nanostructures. “We hope that resonant dielectric nanostructures will finally give rise to real-life applications from resonant nanophotonics,” says Kuznetsov. They anticipate that many areas of technology could be strongly affected by this development. “Three-dimensional holographic displays
for smartphones and high-resolution virtual and augmented reality devices might be developed based on dielectric nanoantennas. Substrates containing resonant dielectric nanoparticles could make bioimaging and genome sequencing more efficient and faster. And rapid computers based on light may appear with resonant dielectric nanoparticle components inside,” says Kuznetsov. “Some of these new and amazing applications may become reality in the next 5 to 8 years,” he predicts. While light may be predictable on large scales, the future is looking anything but tame for this emerging technology.
1. Evlyukhin, A. B., Reinhardt, C., Seidel, A., Luk’yanchuk, B. S. & Chichkov, B. N. Optical response features of Si-nanoparticle arrays. Physical Review B 82, 045404 (2010).
2. Miroshnichenko, A. E., Luk’yanchuk, B., Maier, S. A. & Kivshar, Y. S. Optically induced interaction of magnetic moments in hybrid metamaterials. ACS Nano 6, 837−842 (2012).
3. Bakker, R. B., Yu, Y. F., Paniagua-Domínguez, R., Luk’yanchuk, B. & Kuznetsov, A. Silicon nanoparticles for waveguiding. Frontiers in Optics 2015, OSA Technical Digest (online) FM1B.2 (2015).
4. Kuznetsov, A. I., Miroshnichenko, A. E., Fu, Y. H., Zhang, J. & Luk’yanchuk, B. Magnetic light. Scientific Reports 2, 492 (2012).
5. Fu, Y. H., Kuznetsov, A. I., Miroshnichenko, A. E., Yu, Y. F. & Luk’yanchuk, B. Directional visible light scattering by silicon nanoparticles. Nature Communications 4, 15247 (2013).
6. Bakker, R. M., Permyakov, D., Yu, Y. F., Markovich, D., Paniagua-Domínguez, R. et al. Magnetic and electric hotspots with silicon nanodimers. Nano Letters 15, 2137−2142 (2015).
7. Kuznetsov, A. I., Miroshnichenko, A. E., Brongersma, M. L., Kivshar, Y. S. & Luk’yanchuk, B. Optically resonant dielectric nanostructures. Science 354, 6314 (2016).
8. Miroshnichenko, A. E., Evlyukhin, A. B., Yu Y. F., Bakker, R. M., Chipouline, A., Kuznetsov, A. I., Luk’yanchuk, B., Chichkov, B. N. & Kivshar, Yu. S. Nonradiating anapole modes in dielectric nanoparticles. Nature Communications 6, 8069 (2015).
9. Yu, Y. F., Zhu, A. Y., Paniagua-Domínguez, R., Fu, Y. H., Luk’yanchuk, B. & Kuznetsov, A. I. High-transmission dielectric metasurface with 2π phase control at visible wavelengths. Laser Photonics Reviews 9, 412–418 (2015).
10. Paniagua-Domínguez, R., Yu, Y. F., Miroschnichenko, A. E., Krivitsky, L. A., Fu, Y. H., Valuckas, V., Gonzaga, L., Toh, Y. T., Kay, A. Y. S., Luk’yanchuk, B. & Kuznetsov, A. I. Generalized Brewster effect in dielectric metasurfaces, Nature Communications 7, 10362 (2016).
ISSUE 6 | JANUARY – MARCH 2017
From Ref. 7. Reprinted with permission from AAAS.
From Ref. 7. Reprinted with permission from AAAS.
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