Title:
PREPARATION METHOD FOR MICRO-NANO STRUCTURE FOR USE IN GLASS ANTI-COUNTERFEITING
Document Type and Number:
WIPO Patent Application WO/2020/224252
Kind Code:
A1
Abstract:
A preparation method for a micro-nano structure for use in glass anti-counterfeiting. First, a commercial polydimethylsiloxane (PDMS) mixture is poured on a silica glass template, and removed after heat curing, and then the PDMS soft template is immersed in a cerium ammonium nitrate ethanol solution to cause the soft template to fully absorb same, and a filter sheet is used to strain the template dry. At the same time, a chromium copper seed layer is sputtered onto a surface of a glass product to be protected from counterfeiting. By means of reaction-diffusion etching between the cerium ammonium nitrite ethanol solution and the chromium copper seed layer, a periodically arranged micro-nano structure pattern is formed on the chromium copper seed layer of the glass product surface. Finally, isotropic wet etching is performed on the exposed glass by means of a hydrofluoric acid buffer solution to obtain a periodically arranged micro-nano structure.
Inventors:
WANG QINGKANG (CN)
ZHU HAOSHU (CN)
ZHU HAOSHU (CN)
Application Number:
PCT/CN2019/122473
Publication Date:
November 12, 2020
Filing Date:
December 02, 2019
Export Citation:
Assignee:
SVG TECH GROUP CO LTD (CN)
SVG YANCHENG OPTRONICS CO LTD (CN)
JIANGSU WEIGE NEW MATERIAL TECH CO LTD (CN)
SVG YANCHENG OPTRONICS CO LTD (CN)
JIANGSU WEIGE NEW MATERIAL TECH CO LTD (CN)
International Classes:
C03C15/00
Foreign References:
| CN103972324A | 2014-08-06 | |||
| CN103345010A | 2013-10-09 |
Other References:
ZHAO, ZHOUXING ET AL.: "Surface light trapping structure based on reaction diffusion etching for solar cells", MICRONANOELECTRONIC TECHNOLOGY, vol. 54, no. 2, 28 February 2017 (2017-02-28), XP009524131, ISSN: 1671-4776, DOI: 10.13250/j.cnki.wndz.2017.02.007
Attorney, Agent or Firm:
SUZHOU JINHE INTELLECTUAL PROPERTY AGENCY(SPECIAL GENERAL PARTNERSHIP) (CN)
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