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.
A typical power density spectrum of a cantilever. A bright field image of a triangular (320 μm long) silicon nitride cantilever is shown in inset. Integration of power density over frequency gives the average square amplitude <x2> which can be used to calculate the spring constant k. Scale bar in inset, 100 μm.
