Integrated lithography to prepare arrays of rounded nano-objects

Áron Sipos, Anikó Szalai, Mária Csete

Research output: Conference contribution

1 Citation (Scopus)

Abstract

An integrated lithography method is presented to prepare rounded nano-objects with variable shape, in arrays with arbitrary symmetry and wavelength-scaled periodicity. Finite element method was applied to determine the near-field confinement under monolayers of silver and gold colloid spheres illuminated by circularly polarized beams possessing periodic intensity distribution, and to predict the shape of nano-objects, which can be fabricated on thin noble metal layers on glass substrates. It was shown that illumination by perpendicularly incident homogeneous beam results in hexagonal array of uniform nano-rings, while uniform nano-crescents appear due to single obliquely incident beam. Illumination of colloid sphere monolayers by interfering beams causes development of co-existent nano-rings and nanocrescents. It was demonstrated that the periodicity of complex patterns is determined by the wavelength and angle of incidence; the inter-object distance is controlled by the relative orientation of interference patterns with respect to colloid sphere monolayers; the nano-object size is determined by the wavelength, sphere diameter and material; while the nearfield distribution sensitively depends on the direction of illumination by circularly polarized light. We present complex patterns of various rounded nano-objects that can be uniquely fabricated via Circular Integrated Interference and Colloid sphere Lithography (CIICL), and applied as plasmonic and meta-materials.

Original languageEnglish
Title of host publicationAlternative Lithographic Technologies IV
PublisherSPIE
ISBN (Print)9780819489791
DOIs
Publication statusPublished - jan. 1 2012
EventAlternative Lithographic Technologies IV - San Jose, CA, United States
Duration: febr. 13 2012febr. 16 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8323
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherAlternative Lithographic Technologies IV
CountryUnited States
CitySan Jose, CA
Period2/13/122/16/12

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Sipos, Á., Szalai, A., & Csete, M. (2012). Integrated lithography to prepare arrays of rounded nano-objects. In Alternative Lithographic Technologies IV [83232E] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8323). SPIE. https://doi.org/10.1117/12.916403