Moheimani, S. O. Reza
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Reza Moheimani holds the James Von Ehr Distinguished Chair in Science and Technology and is Professor of Mechanical Engineering and Computer Science. "An important aspect of Dr. Moheimani’s research is concerned with microelectromechanical systems, also known as MEMS or micro-machines." His other research interests include:
- Control Systems
- Mechatronics
- Nanotechnology
ORCID page
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Recent Submissions
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Scanning Tunneling Microscope Control: A Self-Tuning PI Controller Based on Online Local Barrier Height Estimation
We identify the dynamics of a scanning tunneling microscope (STM) in closed loop and show that the plant dc gain is proportional to the square root of local barrier height (LBH), a quantum mechanical property of the sample ... -
Internal Model Control of Cycloid Trajectory for Video-Rate AFM Imaging with a SOI-MEMS Nanopositioner
We demonstrate high-performance tracking of a cycloid trajectory for video-rate atomic force microscopy imaging by employing internal model control. To acquire sequential images using cycloid scanning, the stage needs to ... -
An Adjustable-Stiffness MEMS Force Sensor: Design, Characterization, and Control
This paper presents a novel one-degree-of-freedom microelectromechanical systems (MEMS) force sensor. The high-bandwidth device contains on-chip sensing and actuation mechanisms, enabling open- and closed-loop modalities. ... -
Q Control of an Active AFM Cantilever with Differential Sensing Configuration
Microcantilevers featuring separate built-in actuation and displacement sensing capabilities allow effective and simple implementation of control methods, opening a pathway to achieving higher scan speeds in tapping-mode ... -
On the Effect of Local Barrier Height in Scanning Tunneling Microscopy: Measurement Methods and Control Implications
(American Institute of Physics Inc, 2018-10-24)A common cause of tip-sample crashes in a Scanning Tunneling Microscope (STM) operating in constant current mode is the poor performance of its feedback control system. We show that there is a direct link between the Local ...
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