Rosette-scan video-rate atomic force microscopy: Trajectory patterning and control design

Nastaran Nikooienejad; Mohammad Maroufi; S O Reza Moheimani

doi:10.1063/1.5098499

Rosette-scan video-rate atomic force microscopy: Trajectory patterning and control design

Rev Sci Instrum. 2019 Jul;90(7):073702. doi: 10.1063/1.5098499.

Authors

Nastaran Nikooienejad¹, Mohammad Maroufi¹, S O Reza Moheimani¹

Affiliation

¹ Erik Jonsson School of Engineering and Computer Science at the University of Texas at Dallas, Richardson, Texas 75080, USA.

PMID: 31370473
DOI: 10.1063/1.5098499

Abstract

We present an analysis and a systematic design methodology for a novel nonraster scan method based on a rosette pattern and demonstrate its application in video-rate atomic force microscopy. This pattern is traced when the lateral axes of a parallel kinematic scanner are commanded to follow a combination of two sinusoids with identical amplitudes and different frequencies. We design an internal-model-based controller to enhance the tracking performance of this pattern and implement the scheme on a microelectromechanical system scanner. The results reveal high-precision tracking of the rosette pattern in order to acquire time-lapsed atomic force microscope images at the rate of 10 frames/s.