Parallel near-field optical micro/nanopatterning on curved surfaces by transported micro-particle lens arrays

Ashfaq Khan (1) , Zengbo Wang (1) , Mohammad A Sheikh (1) , David J Whitehead (1) , Lin Li (1)

1 Aerospace and Civil Engineering

Although laser surface nanopatterning by particle-lens arrays, utilizing near field enhancement, has been extensively utilized previously, a suitable technique for the deposition of Particle Lens Arrays (PLA) on curved surface of cylinder was not available. In this paper, a novel technique for nano-patterning on curved surfaces using particle-lens arrays is demonstrated. In the proposed technique, a hexagonal closed pack monolayer of SiO 2 spheres is first formed by self assembly on a flat glass surface. The formed monolayer of particles is then picked up by a flexible optically transparent sticky surface and placed on the substrate to be patterned. A 532 nm wavelength Nd:YVO 4 laser was used to irradiate the substrate with the laser passing through the flexible, transparent surface and the particles. Experimental investigations are made to ascertain the properties of the patterns. In addition, the optical near-field distribution around the particles is numerically simulated. The proposed technique is validated for nanopatterning of curved surface of a cylinder.

Mots clés: Laser nanopatterning; Near-Field enhancement; Particle Lens Arrays ( PLA ).; Particle Lens Arrays ( PLA )

Ashfaq Khan, Zengbo Wang, Mohammad A Sheikh, David J Whitehead, Lin Li. Parallel near-field optical micro/nanopatterning on curved surfaces by transported micro-particle lens arrays. Journal of Physics D: Applied Physics, 2010, 43 (30), pp.305302. ⟨10.1088/0022-3727/43/30/305302⟩. ⟨hal-00569662⟩