Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The absolute values of the normal (adhesion) force component FvdW, the lateral (friction) force component Ff, the net pulling force F(θ), and the maximum friction force Ffmax that can be obtained from a spatula pad in contact with a substrate (shaded band).
