Cantilever

Cantilever#

An Cantilever object is used to store cantilever parameters and calculate coefficients needed to convert a spring constant shift to a resonance-frequency shift, based on the experiment. The available coefficients are for the DC signal and modulated signal.

Example Usage#

Create a cantilever object with a spring constant of 780 aN/nm and frequency of 4975 Hz:

cantilever = Cantilever(k_c=780, f_c=4975)

To print out the cantilever summary:

>>> print(cantilever)
Cantilever
  k_c = 780 aN/nm
  f_c = 4975 Hz
  k2f_modulated = 1.436e+00 Hz.nm/aN
  k2f = 3.189e+00 Hz.nm/aN

cantilever module#

class mrfmsim.component.cantilever.Cantilever(k_c: float, f_c: float)[source]#

Bases: ComponentBase

Cantilever object.

Parameters:

  • k_c (float) – spring constant [aN/nm]

  • f_c (float) – mechanical resonance frequency [Hz]

Variables:

  • k2f_modulated (float) – spring constant to frequency ratio for modulated cantilever (lockin) [Hz.nm/aN]

  • k2f (float) – spring constant to frequency ratio for non-modulated cantilever [Hz.nm/aN]