公开(公告)号：US12013374B2

公开(公告)日：2024-06-18

申请号：US17380414

申请日：2021-07-20

Applicant: Seagate Technology LLC

Inventor： Anand Venkatesh Sethuraman ,  Xinwei Li ,  Emil John C. Esmenda ,  Qui Tan ,  Ray Lilly ,  Koji Adachi ,  Connor James Freeman

IPC: G01N3/02 ,  G01N3/08 ,  G01N3/20 ,  G01N3/30 ,  G01N33/38

CPC classification number: G01N3/02 ,  G01N3/30 ,  G01N33/386 ,  G01N2203/0062

Abstract: A method includes forming, by a laser beam supplied by a laser cutting system, a laser-cut line in each of a plurality of glass samples. Each different laser-cut line in each different glass sample of the plurality of glass samples is formed when the laser cutting system is at a different process setting. The method also includes subjecting each of the plurality of glass samples with the laser-cut lines to a break test, and obtaining a plurality of break strength values. Each different break strength value of the plurality of break strength values is indicative of a laser-cut line quality of the respective glass sample of the plurality of glass samples.

公开(公告)号：US20230021846A1

公开(公告)日：2023-01-26

申请号：US17380414

申请日：2021-07-20

Applicant: Seagate Technology LLC

Inventor： Anand Venkatesh Sethuraman ,  Xinwei Li ,  Emil John C. Esmenda ,  Qui Tan ,  Ray Lilly ,  Koji Adachi ,  Connor James Freeman

IPC: G01N3/02 ,  G01N3/30 ,  G01N33/38

Abstract: A method includes forming, by a laser beam supplied by a laser cutting system, a laser-cut line in each of a plurality of glass samples. Each different laser-cut line in each different glass sample of the plurality of glass samples is formed when the laser cutting system is at a different process setting. The method also includes subjecting each of the plurality of glass samples with the laser-cut lines to a break test, and obtaining a plurality of break strength values. Each different break strength value of the plurality of break strength values is indicative of a laser-cut line quality of the respective glass sample of the plurality of glass samples.

公开(公告)号：US10896693B1

公开(公告)日：2021-01-19

申请号：US15454587

申请日：2017-03-09

Applicant: Seagate Technology LLC

Inventor： Lihong Zhang ,  Xiong Liu ,  Hongbo Wang ,  Xinwei Li

IPC: G11B5/73

Abstract: A stack comprises a substrate, a magnetic recording layer, and a negative thermal expansion layer disposed between the substrate and the magnetic recording layer. The negative thermal expansion layer is configured to reduce thermal profile changes of a surface of the stack opposite the substrate during a heat assisted magnetic recording write operation.