20 February 2017 Utilizing microsphere-based enhanced-intensity laser ablation for nanopatterning polymers
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We use rigorous scattering matrix simulations to develop a pathway for synthesizing nanopatterns on polymer surfaces. We consider a system in which the polymer surfaces are initially coated with periodic microspheres in a close packed lattice. When such a lattice is irradiated with a laser of desired wavelength and power, the electric field intensity beneath the spheres is enhanced by more than an order of magnitude, generating localized heating that can remove nanometersize volume of the material in a periodic array of nanocavities. The array of glass spheres can be self-assembled on any curved surface, and these spheres can be utilized as an optical lens to focus light energy within the surface. Our simulations show that the depth and size of the nano-cavities depends critically on the size of microspheres.
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Akshit Peer, Akshit Peer, Rana Biswas, Rana Biswas, } "Utilizing microsphere-based enhanced-intensity laser ablation for nanopatterning polymers", Proc. SPIE 10112, Photonic and Phononic Properties of Engineered Nanostructures VII, 101122C (20 February 2017); doi: 10.1117/12.2253025; https://doi.org/10.1117/12.2253025

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