• A review of demodulation techniques for amplitude-modulation atomic force microscopy 

      Ruppert, Michael G.; Harcombe, David M.; Ragazzon, Michael Remo Palmén; Moheimani, S.O. Reza; Fleming, Andrew J. (Journal article; Peer reviewed, 2017)
      In this review paper, traditional and novel demodulation methods applicable to amplitude-modulation atomic force microscopy are implemented on a widely used digital processing system. As a crucial bandwidth-limiting component ...
    • Frequency domain analysis of robust demodulators for high-speed atomic force microscopy 

      Ruppert, Michael G.; Harcombe, David M.; Ragazzon, Michael Remo Palmén; Moheimani, S.O. Reza; Fleming, Andrew J. (Journal article; Peer reviewed, 2017)
      A fundamental but often overlooked component in the z-axis feedback loop of the atomic force microscope (AFM) operated in dynamic mode is the demodulator. Its purpose is to obtain a preferably fast and low-noise estimate ...