HMDS is used to render the surface of silicon more hydrophobic and thus to match better with the chemistry of the photoresist.
One should always measure the advancing and the receding contact angle to get the true picture of the surface wettability.
Learn about the difference between primary and secondary batteries, and about battery performance indicators.
Adhesion problems are one of the main reasons for the failure of the product. Read to find out how contact angle measurements can help solve the problem.