Patent ID: 7560692
Filing Date: 2009-07-14
Classification: G01N

Abstract:
1. A method of preparing a sample for electron microscopy, comprising: etching at least two markers on a top surface of a sample containing at least one metal wiring level, wherein a first marker among said at least two markers is formed on one side of a region of interest and a second marker among said at least two markers is formed on an opposite side of said region of interest; filling said at least two markers with a fill material; delayering said sample to an upper surface of said region of interest; applying a first coat of an adhesive to a delayered surface of said sample and curing said first coat at a temperature from about 70° C. to about 130° C.; applying a second coat of said adhesive to said cured first coat and curing said second coat at a temperature from about 70° C. to about 130° C.; polishing both sides of said sample, wherein said first marker, said second marker, and said region of interest are polished to a same thickness from 10 nm to 200 nm; and removing said adhesive from said sample.