Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical excitation of atomic force microscopy cantilever for accurate
  spectroscopic measurements   Reliable operation of frequency modulation mode atomic force microscopy
(FM-AFM) depends on a clean resonance of an AFM cantilever. It is recognized
that the spurious mechanical resonances which originate from various mechanical
components in the microscope body are excited by a piezoelectric element that
is intended for exciting the AFM cantilever oscillation and these spurious
resonance modes cause the serious undesirable signal artifacts in both
frequency shift and dissipation signals. We present an experimental setup to
excite only the oscillation of the AFM cantilever in a fiber-optic
interferometer system using optical excitation force. While the optical
excitation force is provided by a separate laser light source with a different
wavelength (excitation laser : {\lambda} = 1310 nm), the excitation laser light
is still guided through the same single-mode optical fiber that guides the
laser light (detection laser : {\lambda} = 1550 nm) used for the
interferometric detection of the cantilever deflection. We present the details
of the instrumentation and its performance. This setup allows us to eliminate
the problems associated with the spurious mechanical resonances such as the
apparent dissipation signal and the inaccuracy in the resonance frequency
measurement.

11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio