公开(公告)号：US20180193814A1

公开(公告)日：2018-07-12

申请号：US15905426

申请日：2018-02-26

Applicant: Chow Tai Fook Jewellery Company Limited

Inventor： Koon Chung HUI ,  Ho CHING ,  Ching Tom KONG

IPC: B01J19/08 ,  C30B33/04 ,  C30B29/04 ,  H01J37/00 ,  B41M3/14 ,  C30B29/16 ,  C30B29/34 ,  C30B29/20

CPC classification number: B01J19/081 ,  B41M3/14 ,  C30B29/04 ,  C30B29/16 ,  C30B29/20 ,  C30B29/34 ,  C30B33/04 ,  H01J37/00 ,  H01J37/317 ,  H01J2237/31713 ,  H01J2237/31737 ,  Y10T428/24355

Abstract: A method of forming one or more protrusions on an outer surface of a polished face of a solid state material, said method including the step of applying focused inert gas ion beam local irradiation towards an outer surface of a polished facet of a solid state material in a way of protruding top surface material; wherein irradiated focused inert gas ions from said focused inert gas ion bean penetrate the outer surface of said polished facet of said solid state material; and wherein irradiated focused inert gas ions cause expansive strain within the solid state crystal lattice of the solid state material below said outer surface at a pressure so as to induce expansion of solid state crystal lattice, and form a protrusion on the outer surface of the polished face of said solid state material.