The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2016
Filed:
Mar. 02, 2010
Yang Yang LI, Hong Kong, CN;
Jianwen Cheng, Hong Kong, CN;
Chun Kwan Tsang, Hong Kong, CN;
Zhengtao Xu, Hong Kong, CN;
Yang Yang Li, Hong Kong, CN;
Jianwen Cheng, Hong Kong, CN;
Chun Kwan Tsang, Hong Kong, CN;
Zhengtao Xu, Hong Kong, CN;
CITY UNIVERSITY OF HONG KONG, Kowloon Tong, Kowloon, HK;
Abstract
A porous titanium dioxide film having photonic properties is made by etching a titanium substrate in an electrolyte solution in the presence of an electric field. The electrolyte solution can be an organic electrolyte solution. Etching involves providing an electrolyte solution in contact with a pair of electrodes and passing an electric current through the electrolyte solution. The titanium substrate can be one of the pair of electrodes. The current has a wave profile selected from a group consisting of a periodic square profile, a sine wave, a linear profile, or a quintic profile, and is provided either parallel to or perpendicular to a plane of the substrate.