Periodic arrays of nanostructures can support collective modes known as lattice resonances that produce strong and spectrally narrow responses. Thanks to these exceptional properties, periodic arrays are being exploited in a wide variety of applications, including ultrasensitive biosensing, nanoscale light emission, and color printing, to cite a few. In this communication, we will analyze how the arrangement of the particles within the unit cell of the array determines its optical response [1-3]. We will also discuss how the interplay between the response of the individual constituents and the collective interaction dictates the ultimate limits of the field enhancement provided by these systems [4,5].
[1] S. Baur, et al., ACS Nano 12, (2018).
[2] A. Cuartero-González, et al., ACS Nano 14, (2020).
[3] L. Zundel, et al., ACS Photonics 8, (2021).
[4] L. Zundel, et al., J. Phys: Photonics 1, (2019)
[5] A. Manjavacas, et al., ACS Nano 13, (2019).
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