公开(公告)号：US10478784B2

公开(公告)日：2019-11-19

申请号：US15682715

申请日：2017-08-22

Applicant: AGC Inc.

Inventor： Shuji Yamazaki ,  Shuichiro Kimura ,  Kenji Kitaoka ,  Yu Hanawa

IPC: B01D71/04 ,  C03C11/00 ,  G01N1/10 ,  G02B21/34 ,  B01D69/02 ,  C03C3/089 ,  G01N1/40 ,  G02B21/00

Abstract: There is provided a glass substrate for observing minute substance, made of porous glass and capable of separating and capturing a minute substance with a 10 to 500 nm average particle diameter contained in a solution or a suspension, comprising a porous glass substrate having a plurality of pores, wherein the plurality of pores has an average pore diameter ranging from 30 to 110% of the average particle diameter of the minute substance, each of the plurality of pores has a surface pore diameter on an uppermost surface of the glass substrate, a standard deviation of the surface pore diameter is 60% or less of the average particle diameter of the minute substance, and a pore with a pore diameter ranging from 60 to 140% of a pore diameter at peak top in a pore diameter distribution of the plurality of pores occupies 90% or more of total pore volume.