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.
Microscopic images show the vertical displacement driving at (a) 0 Hz, (b) non-resonating 2D scanning at 201 Hz in vertical and 20 Hz in horizontal direction. (Pictures are taken directly above the scanner so vertical and horizontal directions are switched).
