State estimation for high-speed multifrequency atomic force microscopy. - Michael G. Ruppert; David M. Harcombe; S. O. Reza Moheimani (ACC, 2016)

Higher-harmonic AFM imaging with a high-bandwidth multifrequency Lyapunov filter. - David M. Harcombe; Michael G. Ruppert; Michael R. P. Ragazzon; Andrew J. Fleming (AIM, 2017)

Frequency domain analysis of robust demodulators for high-speed atomic force microscopy. - Michael G. Ruppert; David M. Harcombe; Michael R. P. Ragazzon; S. O. Reza Moheimani; Andrew J. Fleming (ACC, 2017)

Direct Design of Closed-loop Demodulators for Amplitude Modulation Atomic Force Microscopy. - Michael G. Ruppert; David M. Harcombe; Steven Ian Moore; Andrew J. Fleming (ACC, 2018)

Lyapunov Estimator for High-Speed Demodulation in Dynamic Mode Atomic Force Microscopy. - Michael R. P. Ragazzon; Michael G. Ruppert; David M. Harcombe; Andrew J. Fleming; Jan Tommy Gravdahl (IEEE Trans. Control. Syst. Technol., 2018)