Metal structure and production method therefor

Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond

Reexamination Certificate

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Reexamination Certificate

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07824761

ABSTRACT:
A metal structure capable of significantly increasing wavelength selectivity and polarization electivity for an incident light, and a production method thereof. First, a solid transparent substrate (glass substrate) (10) is cleaned and dried (S100). The surface of the substrate (10) is spin-coated with a positive electron lithography-use resist solution and then baked, and the resist solution is removed to form a resist thin film (20) on the substrate (10) (S200). A specified pattern is drawn on the resist thin film (20) with an electron beam, and the film is developed, rinsed and dried (S300). Then, metals such as chromium and then gold are formed sequentially on the substrate (10) by sputtering (S400). And, excessive resist materials are removed from the surface of the substrate (10) (S500), whereby metal nano-rod array (40) is completed. The metal nano-rod array (40) has a structure in which many metal nano-rods having their sizes precisely controlled are integrated on the substrate (10) at constant fine intervals and with their directions aligned in one axial direction.

REFERENCES:
patent: 2003-315531 (2003-12-01), None
patent: 2004-292627 (2004-10-01), None
Linden S. et al., Controlling the Interaction between Light and Gold Nanoparticles: Selective Suppression of Extinction, Physical Review Letters, Voi.86, No. 20, pp. 4688 to 4691, May 14, 2001.
JP 2000-173978 Translation of abstract and Description.
Craighead, H.G, et al., “Characterization and optical properties of arrays of small gold particles”,App. Phys. Lett. vol. 44, pp. 1134-1136, (Jun. 15, 1984).
Gotschy, W., et al., “Thin films by regular patterns of metal nanoparticles: tailoring the optical properties by nanodesign”,App. Phys. B63, pp. 381-384, (1996).

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