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“Engineering Electromagnetic Field Distribution and Resonance Quality Factor Using Slotted Quasi-BIC Metasurfaces” published in Nano Letters, selected as VINSE Spotlight Publication

Posted by on Thursday, March 9, 2023 in News, Spotlight Publications.


Sen Yang is a fifth-year graduate student pursuing a Ph.D. in Interdisciplinary Materials Science under the direction of Dr. Justus Ndukaife. Ndukaife’s group focuses on multidisciplinary research including plasmonic and resonant dielectric nanostructures for efficient nano-optical trapping, manipulation, enhanced spectroscopy, and sensing of nanoscale objects. Sen’s recent publication in Nano Letters demonstrates an approach to improve the quality factor and field enhancement through engineering slots within a zigzag array of elliptical silicon resonators in the mid-IR. By introducing slots, the electric field intensity enhancement near the apex and the quality factor of the quasi-BIC resonance are increased by a factor of 2.1 and 3.3, respectively, in comparison to the structure without slots. Furthermore, the slotted structure also provides extra regions of electromagnetic enhancement and confinement, which holds enormous potential in particle trapping, sensing, and emission enhancement.

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