| Entry name：Production method of CBN cone microstructure |
| Format |
Brokered IP Deals |
| Industry |
Specialized Products |
| IP Holder |
City University of Hong Kong |
| IP Originator |
-- |
| Entry name |
Production method of CBN cone microstructure |
| Registration ID |
美國專利號：US8158011 |
| Region |
175 |
| Application Date |
2022-06-06 00:00:00 |
| Grant Date |
2022-12-31 00:00:00 |
| Project Location |
ChinaHong Kong |
City University of Hong Kong, or CityU for short, was founded in 1984, formerly known as the City Polytechnic of Hong Kong, and was upgraded to City University of Hong Kong in 1994. Each year, CityU offers about 130 high-quality undergraduate and research degree courses of different levels and majors to about 20000 students. The university now has schools of business, humanities and Social Sciences, science and engineering, creative media, energy and environment, and law. Apart from the school of energy and environment, the above-mentioned colleges are now open to the mainland. More than 48% of the nearly 600 outstanding professors from 30 countries, including fields and Wolff prize winners, 10 world-class academicians, 12 Yangtze scholars, 17 members of the international society of electrical and Electronic Engineering (IEEE), 6 Fulbright Fulbright senior scholars, and 5 Croucher Most of them hold doctorates from well-known overseas universities, and have long held full-time teaching and research positions in overseas universities. For six consecutive years (2004-2009), CityU has been selected as one of the 200 best universities in the world in the times higher education supplement. From 2007 to 2009, CityU was also selected as one of the 150 best universities in the world. In 2009, CityU jumped to 124. CityU ranked 18 in the list of Asian universities. CityU ranked in the international higher education information institution quacquarelli symbols In 2010, the world university ranked 129, the Asian University ranked 15, the social sciences of CityU ranked 105, and the humanities, engineering and information technology ranked 107.
Technology | Cubic boron nitride (CBN) nanostructures, such as nanoconics, have good prospects in the application of electrolytic analysis and stability sensors. However, the application of CBN is limited by its high-speed switching electric field and its inability to form a large area of thick CBN film. The invention relates to a manufacturing method of CBN cone structure. The manufacturing process includes: first, a layer of diamond is generated on the substrate; second, a layer of CBN film is deposited on the diamond layer; third, the etching mask is pre deposited on the CBN film; and finally, the CBN film with the mask is etched. CBN / diamond composite structure can be prepared on semiconductor, insulator, metal and alloy. The top layer of CBN can be prepared by chemical vapor deposition, ion assisted physical vapor deposition and laser ablation. Etching mask can be made by using metal film, colloidal metal particles of specified size and polymer ball. In the production of conductive CBN cones, gases mixed with impurities (such as silicon or sulfur) can be injected into the environment to precipitate the CBN film. Adding impurities to the CBN film / cone can be done by the method of ion implantation. |
Advantages | A structured homogeneous CBN cone with a large surface area can be used for electrodes and sensors. A single cone can be used in the machining of MEMS. |
Possible applications | For electrical level and sensors |
Category | Nanotechnology |
