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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 1 — Jan. 1, 2008
  • pp: 40–42

Application of Huygens–Fresnel diffraction principle for high aspect ratio SU-8 micro-/nanotip array

Seok Woo Lee and Seung S. Lee  »View Author Affiliations


Optics Letters, Vol. 33, Issue 1, pp. 40-42 (2008)
http://dx.doi.org/10.1364/OL.33.000040


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Abstract

A high-aspect-ratio ( 30 ) SU-8 micro-/nanotip array whose shape is defined by diffraction was fabricated by a single UV photolithography procedure and its exposed dose control. The fabrication result of the tip agrees well with the Rayleigh–Sommerfeld solution of the Huygens–Fresnel principle at wide observation distances. In a near field below distance 2 μ m (only several times of wavelength), necking points also agree with the solution, although it is assumed that the distance is much larger than wavelength. It can be also applied to control the shape of the tip and to determine the critical dose D c of SU-8 and other photocurable polymers.

© 2008 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(110.5220) Imaging systems : Photolithography
(160.5470) Materials : Polymers
(160.6000) Materials : Semiconductor materials

ToC Category:
Materials

History
Original Manuscript: October 3, 2007
Revised Manuscript: November 5, 2007
Manuscript Accepted: November 12, 2007
Published: December 18, 2007

Virtual Issues
Vol. 3, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Seok Woo Lee and Seung S. Lee, "Application of Huygens-Fresnel diffraction principle for high aspect ratio SU-8 micro-/nanotip array," Opt. Lett. 33, 40-42 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-1-40


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