Omnidirectional Waveguide Encoded Lattice (OWEL): collecting light at all angles Kathryn Benincasa and Kalaichelvi Saravanamuttu Department of Chemistry and Chemical Biology, McMaster University, Hamilton, ON, L8S 4M1, Canada Natural compound eyes have many advantages over mammalian eyes such as fast movement detection, polarization sensitivity and a large, nearly hemispherical, field of view (FOV). 1 Artificial compound eyes have significant potential in light collection and medical imaging applications. Typically, fabrication of these replicas, which have hemispherical geometry, involves complex multi-component and multi-step processes. 2,3 Here, we present a flexible, single-component, planar film, which like the compound eye, possesses a near-hemispherical FOV. The Omnidirectional Waveguide Encoded Lattice (OWEL) is generated through a single-step room temperature process 4–6 where a slim polymer film is inscribed with an omnidirectional array of multimode waveguides. The OWEL architectures possess omnidirectional FOV of ≈ 100°, and when integrated with a CMOS camera chip exhibits 3-D imaging capabilities. The OWEL represents a fundamentally new class of flexible, slim films, which could easily integrate with planar systems such as solar panels, smart phone cameras and LCD screens to further enhance their light collection capabilities. References 1. Wu, D.; Wang, J. N.; Niu, L. G.; Zhang, X. L.; Wu, S. Z.; Chen, Q. D.; Lee, L. P.; Sun, H. B. Adv Opt Mater 2014 , 2 (8), 751–758. 2. Song, Y. M.; Xie, Y.; Malyarchuk, V.; Xiao, J.; Jung, I.; Choi, K. J.; Liu, Z.; Park, H.; Lu, C.; Kim, R. H.; Li, R.; Crozier, K. B.; Huang, Y.; Rogers, J. A. Nature 2013 , 497 (7447), 95–99. 3. Duparre, J. W.; Wippermann, F. C. Bioinspiration and Biommetics 2006 , 1 , 1–16. 4. Hosein, I. D.; Lin, H.; Ponte, M. R.; Basker, D. K.; Brook, M. A.; Saravanamuttu, K. Adv. Func. Mater. 2017 , 27 (40), 1–11.
5. Lin, H.; Hosein, I. D.; Benincasa, K. A.; Saravanamuttu, K. Adv. Opt. Mater. 2019 , 7 (5), 1–9. 6. Lin, H.; Benincasa, K. A.; Fradin, C.; Saravanamuttu, K. Adv. Opt. Mater. 2019 , 7 (11), 1–9.
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