Effective stiffness of qPlus sensor and quartz tuning fork.

  title={Effective stiffness of qPlus sensor and quartz tuning fork.},
  author={Jongwoo Kim and Donghyun Won and Baekman Sung and Sangmin An and Wonho Jhe},
Quartz tuning forks (QTFs) have been extensively employed in scanning probe microscopy. For quantitative measurement of the interaction in nanoscale using QTF as a force sensor, we first measured the effective stiffness of qPlus sensors as well as QTFs and then compared the results with the cantilever beam theory that has been widely used to estimate the stiffness. Comparing with the stiffness and the resonance frequency in our measurement, we found that those calculated based on the beam… CONTINUE READING