Dr Michael Ruppert

Casual Research Assistant

School of Electrical Engineering and Computing

Email:michael.ruppert@newcastle.edu.au
Phone:(02) 4921 7345

Career Summary

Biography

Michael Ruppert received the Dipl.-Ing. Degree in automation technology in production, with a specialization in systems theory and automatic control, from the University of Stuttgart, Germany, in 2013. In 2017, he received the Ph.D. degree with Excellence Award in electrical engineering from The University of Newcastle, Australia where he is now a Postdoctoral Research Fellow with the School of Electrical Engineering and Computing. As a Visiting Researcher, he was with the Mechanical Engineering Department, University of Texas at Dallas, USA.

Dr Ruppert's research topics are situated within the area of Micro Precision Mechatronics and as such bridge the gap between classical electrical / control engineering and emerging applications in the field of microelectromechanical
systems, high performance microscopy and nanotechnology. His recent work has focused on the development of estimation, control and self-sensing approaches for microelectromechanical (MEMS) systems such as piezoelectric microcantilevers and nanopositioning systems for multifrequency and single-chip atomic force microscopy.

Dr Ruppert received the Academic Merit Scholarship from the University of Stuttgart, the Baden-Württemberg Scholarship, and held Postgraduate Research Scholarships with the University of Newcastle and with the CSIRO, Clayton, VIC, Australia. Dr Ruppert's research has been recognized with Best Conference Paper Finalist Awards at the 2018 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS) and a the 2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM). In 2018, the article Multimode Q Control in Tapping-Mode AFM: Enabling Imaging on Higher Flexural Eigenmodes published in IEEE Transactions on Control Systems Technology received the 2018 IEEE TCST Outstanding Paper Award.

Qualifications

Doctor of Philosophy, University of Newcastle
Master of Science, University of Stuttgart - Germany

Keywords

Atomic Force Microscopy
Control Systems
Mechatronics
Microelectromechanical systems (MEMS)
Nanotechnology
Piezoelectric Transducer
Signal Processing
Smart Structures

Languages

German (Mother)
English (Fluent)
French (Working)

Fields of Research

Code	Description	Percentage
091304	Dynamics, Vibration and Vibration Control	40
091306	Microelectromechanical Systems (MEMS)	40
090699	Electrical and Electronic Engineering not elsewhere classified	20

Professional Experience

Academic appointment

Dates	Title	Organisation / Department
1/8/2015 - 1/8/2016	Visiting Researcher Fabrication of piezoelectric microcantilevers and nanotips in the clean room. Research and development of a MEMS-based on-chip atomic force microscope. Analysis of process stability of a scanning tunneling microscope enabled nanolithography in collaboration with industry.Planning and setup of the Laboratory for Dynamics and Control of Nanosystems (LDCN).	University of Texas Dallas Erik Jonsson School of Engineering and Computer Science United States

Awards

Distinction

Year	Award
2018	Higher Degree by Research Excellence Faculty of Engineering and Built Environment - The University of Newcastle (Australia)

Honours

Year	Award
2019	Interview in IEEE Control Systems IEEE Control Systems

Prize

Year	Award
2016	FEBE Postgraduate Research Prize Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
2014	FEBE Postgraduate Research Prize Faculty of Engineering and Built Environment - The University of Newcastle (Australia)

Research Award

Year	Award
2019	Best Conference Paper Award International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS)
2018	IEEE Transactions on Control Systems Technology Outstanding Paper Award IEEE Control Systems Society
2018	Best Conference Paper Finalist Award International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS)
2013	Best Student Conference Paper Finalist Award IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM

Scholarship

Year	Award
2014	OCE PhD CSIRO Scholarship CSIRO - Commonwealth Scientific and Industrial Research Organisation
2013	UNIPRS and UNRSC 50-50 Scholarship The University of Newcastle
2012	Baden-Württemberg Scholarship Baden-Württemberg Stiftung
2008	Academic Merit Scholarship University of Stuttgart

Invitations

Committee Member

Year	Title / Rationale
2019	MARSS Program Committee
2018	IEEE Control Systems Society Conference Editorial Board Associate Editor for ACC2019

Organiser

Year	Title / Rationale
2019	Invited Session at IEEE International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS), Helsinki, Finland Design and Control of Micro and Nano Precision Mechatronic Systems I & II Lead Organizer of Invited Session and Chair
2018	Invited Session at IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), Auckland, New Zealand Design and Control of Micro and Nano Precision Mechatronic Systems Lead Organizer of Invited Session and Chair
2017	Invited Session at IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), Munich, Germany Design and Control of Micro and Nano Precision Mechatronic Systems Lead Organizer of Invited Session and Chair

Speaker

Year	Title / Rationale
2018	Invited Seminar at EPFL, Lausanne, Switzerland Integrated Sensing, Estimation and Control in Multifrequency Atomic Force Microscopy
2018	Invited Seminar at TNO, Delft, The Netherlands Integrated Sensing, Estimation and Control in Multifrequency Atomic Force Microscopy
2017	Invited Seminar of the IEEE WA joint EDS/SSCS/IPS Chapter at UWA, Perth, Australia Self-Sensing, Estimation and Control in Multifrequency Atomic Force Microscopy
2016	Invited Lecture at UTD, Dallas, USA Kalman Filtering Applied to Multifrequency Atomic Force Microscopy

Grant Reviews

Year	Grant	Amount
2018	ARC Discovery Project DP19 Aust Competitive - Commonwealth - 1CS, Aust Competitive - Commonwealth - 1CS Detailed Assessor	$450,000

Prestigious works / other achievements

Year Commenced	Year Finished	Prestigious work / other achievement	Role
2017	2017	New Paradigm in Microscopy: Atomic Force Microscope on a Chip IEEE Spectrum Magazine	Author

Teaching

Code	Course	Role	Duration
TM1 & TM2	Engineering Mechanics I and II University of Stuttgart	Tutor	1/1/2008 - 31/12/2008
ELEC4410	Advanced Control System Design The University of Newcastle ELEC4410 examines advanced analysis and design issues in linear feedback control systems. The course provides an in-depth introduction to the fundamental concepts of linear system theory using both transfer function and state equation system descriptions. Emphasis is placed on the design of feedback controllers and state estimators for pole-placement, robust regulation, tracking and disturbance rejection, in the context of real world industrial process applications.	Tutor	30/7/2013 - 31/12/2013
ELEC4400	Automatic Control The University of Newcastle This course treats the basic principles of the automatic control of industrial processes and machines. The emphasis of the subject is on continuous time control, although some introductory material on sequential logic control (or programmable logic control) is included.	Tutor	1/3/2014 - 30/6/2014
ELEC4400	Automatic Control The University of Newcastle This course treats the basic principles of the automatic control of industrial processes and machines. The emphasis of the subject is on continuous time control, although some introductory material on sequential logic control (or programmable logic control) is included.	Tutor	1/3/2013 - 30/6/2013

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Publications

For publications that are currently unpublished or in-press, details are shown in italics.

Highlighted Publications

Year

Citation

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2016

Ruppert MG, Moheimani SOR, 'Multimode Q Control in Tapping-Mode AFM: Enabling Imaging on Higher Flexural Eigenmodes', IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 24 1149-1159 (2016) [C1]

DOI	10.1109/TCST.2015.2478077
Citations	Scopus - 25Web of Science - 21
Co-authors	Reza Moheimani

2017

Ruppert MG, Fowler AG, Maroufi M, Moheimani SOR, 'On-Chip Dynamic Mode Atomic Force Microscopy: A Silicon-on-Insulator MEMS Approach', JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, 26 215-225 (2017) [C1]

DOI	10.1109/JMEMS.2016.2628890
Citations	Scopus - 19Web of Science - 17
Co-authors	Reza Moheimani

2017

Ruppert MG, Harcombe DM, Ragazzon MRP, Moheimani SOR, Fleming AJ, 'A review of demodulation techniques for amplitude-modulation atomic force microscopy', BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 8 1407-1426 (2017) [C1]

DOI	10.3762/bjnano.8.142
Citations	Scopus - 21Web of Science - 15
Co-authors	Reza Moheimani, Andrew Fleming

2017

Ruppert MG, Yong YK, 'Note: Guaranteed collocated multimode control of an atomic force microscope cantilever using on-chip piezoelectric actuation and sensing', Review of Scientific Instruments, 88 (2017) [C1]

© 2017 Author(s). The quality (Q) factor is an important parameter of the resonance of the microcantilever as it determines both imaging bandwidth and force sensitivity. The ability to control the Q factor of multiple modes is believed to be of great benefit for atomic force microscopy techniques involving multiple eigenmodes. In this paper, we propose a novel cantilever design employing multiple piezoelectric transducers which are used for separated actuation and sensing, leading to guaranteed collocation of the first eight eigenmodes up to 3 MHz. The design minimizes the feedthrough usually observed with these systems by incorporating a guard trace on the cantilever chip. As a result, a multimode Q controller is demonstrated to be able to modify the quality factor of the first two eigenmodes over up to four orders of magnitude without sacrificing robust stability.

DOI	10.1063/1.4990451
Citations	Scopus - 9Web of Science - 7
Co-authors	Yuenkuan Yong

Chapter (1 outputs)

Year

Citation

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Link

2020

Ruppert M, Moheimani S, 'Dynamics and Control of Active Microcantilevers', Encyclopedia of Systems and Control, Springer, London, UK (2020) [B1]

DOI	10.1007/978-1-4471-5102-9_184-2
Co-authors	Reza Moheimani

Journal article (25 outputs)

Year

Citation

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2020

Moore SI, Ruppert MG, Yong YK, 'AFM Cantilever Design for Multimode Q Control: Arbitrary Placement of Higher Order Modes', IEEE/ASME Transactions on Mechatronics, 25 1389-1397 (2020) [C1]

DOI	10.1109/tmech.2020.2975627
Co-authors	Yuenkuan Yong

2020

Seethaler R, Mansour SZ, Ruppert MG, Fleming AJ, 'Position and force sensing using strain gauges integrated into piezoelectric bender electrodes', Sensors and Actuators, A: Physical, (2020)

© 2020 This article derives design guidelines for integrating strain gauges into the electrodes of piezoelectric bending actuators. The proposed sensor can estimate the actuator tip displacement in response to an applied voltage and an external applied tip force. The actuator load force is also estimated with an accuracy of 8% full scale by approximating the actuator response with a linear model. The applications of this work include micro-grippers and pneumatic valves, which both require the measurement of deflection and load force. At present, this is achieved by external sensors. However, this work shows that these functions can be integrated into the actuator electrodes.

DOI	10.1016/j.sna.2020.112416
Co-authors	Andrew Fleming

2020

Harcombe D, Rupper M, Fleming A, 'A review of demodulation techniques for multifrequency atomic force microscopy', Beilstein Journal of Nanotechnology, 11 76-91 (2020) [C1]

© 2020 Harcombe et al.; licensee Beilstein-Institut. License and terms: see end of document. This article compares the performance of traditional and recently proposed demodulators for multifrequency atomic force microscopy. The compared methods include the lock-in amplifier, coherent demodulator, Kalman filter, Lyapunov filter, and direct-design demodulator. Each method is implemented on a field-programmable gate array (FPGA) with a sampling rate of 1.5 MHz. The metrics for comparison include the sensitivity to other frequency components and the magnitude of demodulation artifacts for a range of demodulator bandwidths. Performance differences are demonstrated through higher harmonic atomic force microscopy imaging

DOI	10.3762/bjnano.11.8
Citations	Scopus - 1
Co-authors	Andrew Fleming

2020

Wang K, Ruppert MG, Manzie C, Nesic D, Yong YK, 'Adaptive Scan for Atomic Force Microscopy Based on Online Optimization: Theory and Experiment', IEEE Transactions on Control Systems Technology, 28 869-883 (2020) [C1]

DOI	10.1109/TCST.2019.2895798
Citations	Scopus - 2Web of Science - 2
Co-authors	Yuenkuan Yong

2020

Harcombe DM, Ruppert MG, Fleming AJ, 'A review of demodulation techniques for multifrequency atomic force microscopy', Beilstein Journal of Nanotechnology, 11 76-91 (2020) [C1]

DOI	10.3762/bjnano.8
Citations	Scopus - 3
Co-authors	Andrew Fleming

2020

Wang K, Ruppert MG, Manzie C, Ne ic D, Yong YK, 'Scan Rate Adaptation for AFM Imaging Based on Performance Metric Optimization', IEEE/ASME Transactions on Mechatronics, 25 418-428 (2020) [C1]

DOI	10.1109/TMECH.2019.2947203
Citations	Scopus - 2Web of Science - 1
Co-authors	Yuenkuan Yong

2020

Ruppert MG, Bartlett NJ, Yong YK, Fleming AJ, 'Amplitude noise spectrum of a lock-in amplifier: Application to microcantilever noise measurements', Sensors and Actuators, A: Physical, 312 (2020) [C1]

DOI	10.1016/j.sna.2020.112092
Co-authors	Yuenkuan Yong, Andrew Fleming

2020

McCourt LR, Ruppert MG, Routley BS, Indirathankam SC, Fleming AF, 'A comparison of gold and silver nanocones and geometry optimisation for tip-enhanced microscopy', Journal of Raman Spectroscopy, 51 2208-2216 (2020) [C1]

© 2020 John Wiley & Sons, Ltd. In this article, boundary element method simulations are used to optimise the geometry of silver and gold nanocone probes to maximise the localised electric field enhancement and tune the near-field resonance wavelength. These objectives are expected to maximise the sensitivity of tip-enhanced Raman microscopes. Similar studies have used limited parameter sets or used a performance metric other than localised electric field enhancement. In this article, the optical responses for a range of nanocone geometries are simulated for excitation wavelengths ranging from 400 to 1000 nm. Performance is evaluated by measuring the electric field enhancement at the sample surface with a resonant illumination wavelength. These results are then used to determine empirical models and derive optimal nanocone geometries for a particular illumination wavelength and tip material. This article concludes that gold nanocones are expected to provide similar performance to silver nanocones at red and near-infrared wavelengths, which is consistent with other results in the literature. In this article, 633 nm is determined to be the shortest usable illumination wavelength for gold nanocones. Below this limit, silver nanocones will provide superior enhancement. The use of gold nanocone probes is expected to dramatically improve probe lifetime, which is currently measured in hours for silver coated probes. Furthermore, the elimination of passivation coatings is expected to enable smaller probe radii and improved topographical resolution.

DOI	10.1002/jrs.5987
Co-authors	Andrew Fleming, Sathish Ci

2020

Harcombe DM, Ruppert MG, Fleming AJ, 'A review of demodulation techniques for multifrequency atomic force microscopy', BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 11 76-91 (2020) [C1]

DOI	10.3762/bjnano.11.8
Citations	Web of Science - 3
Co-authors	Andrew Fleming

2019

Ruppert MG, Moheimani SOR, '2018 IEEE Transactions on Control Systems Technology Outstanding Paper Award', IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 27 463-463 (2019)

DOI	10.1109/TCST.2018.2889911
Co-authors	Reza Moheimani

2019

Ruppert MG, Moore S, Zawierta M, Fleming AJ, Putrino G, Yong YK, 'Multimodal atomic force microscopy with optimized higher eigenmode sensitivity using on-chip piezoelectric actuation and sensing', NANOTECHNOLOGY, 30 (2019) [C1]

DOI	10.1088/1361-6528/aae40b
Citations	Scopus - 13Web of Science - 11
Co-authors	Yuenkuan Yong, Andrew Fleming

2019

Moore SI, Ruppert MG, Yong YK, 'An optimization framework for the design of piezoelectric AFM cantilevers', Precision Engineering, 60 130-142 (2019) [C1]

DOI	10.1016/j.precisioneng.2019.08.005
Citations	Scopus - 3Web of Science - 3
Co-authors	Yuenkuan Yong

2019

Moore S, Ruppert M, Harcombe D, Fleming A, Yong Y, 'Design and Analysis of Low-Distortion Demodulators for Modulated Sensors', IEEE/ASME Transactions on Mechatronics, 24 1861-1870 (2019) [C1]

DOI	10.1109/TMECH.2019.2928592
Citations	Scopus - 3Web of Science - 2
Co-authors	Andrew Fleming, Yuenkuan Yong

2018

Harcombe DM, Ruppert MG, Ragazzon MRP, Fleming AJ, 'Lyapunov estimation for high-speed demodulation in multifrequency atomic force microscopy', BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 9 490-498 (2018) [C1]

DOI	10.3762/bjnano.9.47
Citations	Scopus - 8Web of Science - 6
Co-authors	Andrew Fleming

2018

Ragazzon MRP, Ruppert MG, Harcombe DM, Fleming AJ, Gravdahl JT, 'Lyapunov Estimator for High-Speed Demodulation in Dynamic Mode Atomic Force Microscopy', IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 26 765-772 (2018) [C1]

DOI	10.1109/TCST.2017.2692721
Citations	Scopus - 13Web of Science - 15
Co-authors	Andrew Fleming

2017

Moore SI, Ruppert MG, Yong YK, 'Multimodal cantilevers with novel piezoelectric layer topology for sensitivity enhancement', BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 8 358-371 (2017) [C1]

DOI	10.3762/bjnano.8.38
Citations	Scopus - 8Web of Science - 8
Co-authors	Yuenkuan Yong

2017

DOI	10.1109/JMEMS.2016.2628890
Citations	Scopus - 19Web of Science - 17
Co-authors	Reza Moheimani

2017

DOI	10.3762/bjnano.8.142
Citations	Scopus - 21Web of Science - 15
Co-authors	Reza Moheimani, Andrew Fleming

2017

DOI	10.1063/1.4990451
Citations	Scopus - 9Web of Science - 7
Co-authors	Yuenkuan Yong

2016

Ruppert MG, Moheimani SOR, 'Multimode Q Control in Tapping-Mode AFM: Enabling Imaging on Higher Flexural Eigenmodes', IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 24 1149-1159 (2016) [C1]

DOI	10.1109/TCST.2015.2478077
Citations	Scopus - 25Web of Science - 21
Co-authors	Reza Moheimani

2016

Ruppert MG, Karvinen KS, Wiggins SL, Moheimani SOR, 'A Kalman Filter for Amplitude Estimation in High-Speed Dynamic Mode Atomic Force Microscopy', IEEE Transactions on Control Systems Technology, 24 276-284 (2016) [C1]

© 2015 IEEE. A fundamental challenge in dynamic mode atomic force microscopy (AFM) is the estimation of the cantilever oscillation amplitude from the deflection signal, which might be distorted by noise and/or high-frequency components. When the cantilever is excited at resonance, its deflection is typically obtained via narrow-band demodulation using a lock-in amplifier (LIA). However, the bandwidth of this measurement technique is ultimately bounded by the low-pass filter, which must be employed after demodulation to attenuate the component at twice the carrier frequency. Furthermore, to measure the amplitude of multiple frequency components, such as higher eigenmodes and/or higher harmonics in multifrequency AFM, multiple LIAs must be employed. In this paper, the authors propose the estimation of amplitude and phase using a linear time-varying Kalman filter that is easily extended to multiple frequencies. Experimental results are obtained using square-modulated sine waves and closed-loop AFM scans, verifying the performance of the proposed Kalman filter.

DOI	10.1109/TCST.2015.2435654
Citations	Scopus - 23Web of Science - 16
Co-authors	Reza Moheimani

2016

Ruppert MG, Moheimani SOR, 'High-bandwidth multimode self-sensing in bimodal atomic force microscopy', Beilstein Journal of Nanotechnology, 7 284-295 (2016) [C1]

© 2016 Ruppert and Moheimani; licensee Beilstein-Institut. License and terms: see end of document. Using standard microelectromechanical system (MEMS) processes to coat a microcantilever with a piezoelectric layer results in a versatile transducer with inherent self-sensing capabilities. For applications in multifrequency atomic force microscopy (MF-AFM), we illustrate that a single piezoelectric layer can be simultaneously used for multimode excitation and detection of the cantilever deflection. This is achieved by a charge sensor with a bandwidth of 10 MHz and dual feedthrough cancellation to recover the resonant modes that are heavily buried in feedthrough originating from the piezoelectric capacitance. The setup enables the omission of the commonly used piezoelectric stack actuator and optical beam deflection sensor, alleviating limitations due to distorted frequency responses and instrumentation cost, respectively. The proposed method benefits from a more than two orders of magnitude increase in deflection to strain sensitivity on the fifth eigenmode leading to a remarkable signal-to-noise ratio. Experimental results using bimodal AFM imaging on a two component polymer sample validate that the self-sensing scheme can therefore be used to provide both the feedback signal, for topography imaging on the fundamental mode, and phase imaging on the higher eigenmode.

DOI	10.3762/bjnano.7.26
Citations	Scopus - 25Web of Science - 23
Co-authors	Reza Moheimani

2016

Ruppert MG, Harcombe DM, Moheimani SOR, 'High-Bandwidth Demodulation in MF-AFM: A Kalman Filtering Approach', IEEE-ASME TRANSACTIONS ON MECHATRONICS, 21 2705-2715 (2016) [C1]

DOI	10.1109/TMECH.2016.2574640
Citations	Scopus - 20Web of Science - 15
Co-authors	Reza Moheimani

2014

Karvinen KS, Ruppert MG, Mahata K, Moheimani SOR, 'Direct tip-sample force estimation for high-speed dynamic mode atomic force microscopy', IEEE Transactions on Nanotechnology, 13 1257-1265 (2014) [C1]

© 2002-2012 IEEE. We present new insights into the modeling of the microcantilever in dynamic mode atomic force microscopy and outline a novel high-bandwidth tip-sample force estimation technique for the development of high-bandwidth z -axis control. Fundamental to the proposed technique is the assumption that in tapping mode atomic force microscopy, the tip-sample force takes the form of an impulse train. Formulating the estimation problem as a Kalman filter, the tip-sample force is estimated directly; thus, potentially enabling high-bandwidth z-axis control by eliminating the dependence of the control technique on microcantilever dynamics and the amplitude demodulation technique. Application of this technique requires accurate knowledge of the models of the microcantilever; a novel identification method is proposed. Experimental data are used in an offline analysis for verification.

DOI	10.1109/TNANO.2014.2360878
Citations	Scopus - 13Web of Science - 13
Co-authors	Reza Moheimani, Kaushik Mahata

2013

Ruppert MG, Moheimani SOR, 'A novel self-sensing technique for tapping-mode atomic force microscopy', Review of Scientific Instruments, 84 (2013) [C1]

DOI	10.1063/1.4841855
Citations	Scopus - 29Web of Science - 24
Co-authors	Reza Moheimani

Show 22 more journal articles

Conference (16 outputs)

Year

Citation

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2019

Ragazzon MRP, Messineo S, Gravdahl JT, Harcombe DM, Ruppert MG, 'Generalized lyapunov demodulator for amplitude and phase estimation by the internal model principle', IFAC-PapersOnLine, Vienna, Austria (2019) [E1]

DOI	10.1016/j.ifacol.2019.11.682
Citations	Scopus - 1

2019

Ruppert MG, Routley BS, Fleming AJ, Yong YK, Fantner GE, 'Model-based Q factor control for photothermally excited microcantilevers', Proceedings of MARSS 2019: 4th International Conference on Manipulation, Automation, and Robotics at Small Scales, Helsinki, Finland (2019) [E1]

DOI	10.1109/MARSS.2019.8860969
Co-authors	Yuenkuan Yong, Andrew Fleming

2019

Harcombe DM, Ruppert MG, Fleming AJ, 'Modeling and noise analysis of a microcantilever-based mass sensor', Proceedings of MARSS 2019: 4th International Conference on Manipulation, Automation, and Robotics at Small Scales, Helsinki, Finland (2019) [E1]

DOI	10.1109/MARSS.2019.8860982
Co-authors	Andrew Fleming

2018

Ruppert MG, Yong YK, 'Design of Hybrid Piezoelectric/Piezoresistive Cantilevers for Dynamic-mode Atomic Force Microscopy', Proceedings of the 2018 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), Auckland, New Zealand (2018) [E1]

DOI	10.1109/AIM.2018.8452229
Citations	Scopus - 1
Co-authors	Yuenkuan Yong

2018

Moore SI, Ruppert MG, Yong YK, 'Arbitrary Placement of AFM Cantilever Higher Eigenmodes Using Structural Optimization', 2018 INTERNATIONAL CONFERENCE ON MANIPULATION, AUTOMATION AND ROBOTICS AT SMALL SCALES (MARSS), Nagoya, JAPAN (2018) [E1]

Citations	Scopus - 2
Co-authors	Yuenkuan Yong

2018

Ruppert MG, Harcombe D, Moore S, Fleming A, 'Direct Design of Closed-loop Demodulators for Amplitude Modulation Atomic Force Microscopy', 2018 Annual American Control Conference (ACC), Milwaukee, WI, USA (2018) [E1]

DOI	10.23919/ACC.2018.8430896
Citations	Scopus - 4
Co-authors	Andrew Fleming

2017

Ruppert MG, Harcombe DM, Ragazzon MRP, Moheimani SOR, Fleming AJ, 'Frequency domain analysis of robust demodulators for high-speed atomic force microscopy', Proceedings of the 2017 American Control Conference, Seattle, USA (2017) [E1]

DOI	10.23919/ACC.2017.7963175
Citations	Scopus - 4Web of Science - 1
Co-authors	Reza Moheimani, Andrew Fleming

2017

Harcombe DM, Ruppert MG, Ragazzon MRP, Fleming AJ, 'Higher-harmonic AFM Imaging with a High-Bandwidth Multifrequency Lyapunov Filter', IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM, Munich, Germany (2017) [E1]

DOI	10.1109/AIM.2017.8014103
Citations	Scopus - 7Web of Science - 5
Co-authors	Andrew Fleming

2017

Maroufi M, Ruppert MG, Fowler AG, Moheimani SOR, 'Design and control of a single-chip SOI-MEMS atomic force microscope', Proceedings of the 2017 American Control Conference, Seattle, USA (2017) [E1]

DOI	10.23919/ACC.2017.7963386
Citations	Scopus - 2Web of Science - 1
Co-authors	Reza Moheimani

2017

Ruppert MG, Maroufi M, Bazaei A, Moheimani SOR, 'Kalman Filter Enabled High-Speed Control of a MEMS Nanopositioner', IFAC PAPERSONLINE, Toulouse, FRANCE (2017) [E1]

DOI	10.1016/j.ifacol.2017.08.1879
Citations	Scopus - 5Web of Science - 4
Co-authors	Ali Bazaei, Reza Moheimani

2017

Moore SI, Ruppert MG, Yong YK, 'Design and Analysis of Piezoelectric Cantilevers with Enhanced Higher Eigenmodes for Atomic Force Microscopy', IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM, Munich, Germany (2017) [E1]

DOI	10.1109/AIM.2017.8014102
Co-authors	Yuenkuan Yong

2016

Moheimani SOR, Fowler A, Maroufi M, Ruppert M, 'On-chip Atomic Force Microscopy: Mechatronic System Design and Control', 2016 AMERICAN CONTROL CONFERENCE (ACC), Boston, MA (2016)

Co-authors	Reza Moheimani

2016

Ruppert MG, Harcombe DM, Reza Moheimani SO, 'State estimation for high-speed multifrequency atomic force microscopy', Proceedings of the 2016 American Control Conference, Boston, MA (2016) [E1]

DOI	10.1109/ACC.2016.7525311
Citations	Scopus - 5Web of Science - 5
Co-authors	Reza Moheimani

2016

Ruppert MG, Moheimani SOR, 'MULTI-MODE Q CONTROL IN MULTIFREQUENCY ATOMIC FORCE MICROSCOPY', INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2015, VOL 4, Boston, MA (2016) [E1]

Citations	Scopus - 5
Co-authors	Reza Moheimani

2014

Ruppert MG, Moheimani SOR, 'Novel reciprocal self-sensing techniques for tapping-mode atomic force microscopy', IFAC Proceedings Volumes (IFAC-PapersOnline) (2014) [E1]

© IFAC. We evaluate two novel reciprocal self-sensing methods for tapping-mode atomic force microscopy (TM-AFM) utilizing charge measurement and charge actuation, respectively. A microcantilever, which can be batch fabricated through a standard microelectromechanical system (MEMS) process, is coated with a single piezoelectric layer and simultaneously used for actuation and deflection sensing. The setup enables the elimination of the optical beam deflection technique which is commonly used to measure the cantilever oscillation amplitude. The voltage to charge and charge to voltage transfer functions reveal a high amount of capacitive feedthrough which degrades the dynamic range of the sensors significantly. A feedforward control technique is employed to cancel the feedthrough and increase the dynamic range from less than 1dB to approximately 30 dB. Experiments show that the conditioned self-sensing schemes achieve an excellent signal-to-noise ratio and can therefore be used to provide the feedback signal for TM-AFM imaging.

DOI	10.3182/20140824-6-za-1003.00376
Citations	Scopus - 8Web of Science - 3
Co-authors	Reza Moheimani

2013

Ruppert MG, Fairbairn MW, Moheimani SOR, 'Multi-Mode Resonant Control of a Microcantilever for Atomic Force Microscopy', 2013 IEEE/ASME International Conference On Advanced Intelligent Mechatronics (AIM): Mechatronics For Human Wellbeing, Wollongong, Australia (2013) [E1]

Citations	Scopus - 11Web of Science - 7
Co-authors	Reza Moheimani

Show 13 more conferences

Thesis / Dissertation (1 outputs)

Year	Citation	Altmetrics	Link
2017	Ruppert MG, Self-sensing, estimation and control in multifrequency atomic force microscopy, The University of Newcastle (2017)

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Grants and Funding

Summary

Number of grants	15
Total funding	$1,161,750

Click on a grant title below to expand the full details for that specific grant.

20211 grants / $210,000

Subsurface Atomic Force Microscopy using Dual Probes$210,000

Funding body: ARC (Australian Research Council)

Funding body	ARC (Australian Research Council)
Project Team	Professor Andrew Fleming, Doctor Michael Ruppert, Associate Professor Yuen Yong, A/Prof Hamed Sadeghian, Hamed Sadeghian
Scheme	Discovery Projects
Role	Investigator
Funding Start	2021
Funding Finish	2023
GNo	G2000139
Type Of Funding	C1200 - Aust Competitive - ARC
Category	1200
UON	Y

20202 grants / $3,760

Characterization of a Microelectromechanical Piezoresistive Sensor$3,000

Funding body: University of Newcastle

Funding body	University of Newcastle
Project Team	Dr Michael Ruppert
Scheme	2020 DVCRI Summer Research Internship Scheme
Role	Lead
Funding Start	2020
Funding Finish	2021
GNo
Type Of Funding	Internal
Category	INTE
UON	N

Mobility Grant$760

Funding body: Australian Academy of Science

Funding body	Australian Academy of Science
Project Team	Michael G. Ruppert
Scheme	EMCR Mobility Grant
Role	Lead
Funding Start	2020
Funding Finish	2020
GNo
Type Of Funding	External
Category	EXTE
UON	N

20197 grants / $840,884

A femtosecond laser micromachining facility for a wide range of materials$438,783

Funding body: ARC (Australian Research Council)

Funding body	ARC (Australian Research Council)
Project Team	Prof Nam-Trung Nguyen, A/Prof Dzung Dao, Dr Yong Zhu, Dr Muhammad J. A. Shiddiky, Dr Porun Liu, Prof Han Huang, Prof Ming-Xing Zhang, Prof Cheng Yan, Prof Yuantong Gu, Prof John Bell, Prof Andrew Fleming, A/Prof Yuen Yong, Dr Michael Ruppert
Scheme	Linkage Infrastructure Equipment & Facilities (LIEF)
Role	Investigator
Funding Start	2019
Funding Finish	2019
GNo
Type Of Funding	Aust Competitive - Commonwealth
Category	1CS
UON	N

A femtosecond laser micromachining facility for a wide range of materials$374,217

Funding body: Collaborating Organisation Cash Contribution

Funding body	Collaborating Organisation Cash Contribution
Project Team	Prof Nam-Trung Nguyen, A/Prof Dzung Dao, Dr Yong Zhu, Dr Muhammad J. A. Shiddiky, Dr Porun Liu, Prof Han Huang, Prof Ming-Xing Zhang, Prof Cheng Yan, Prof Yuantong Gu, Prof John Bell, Prof Andrew Fleming, A/Prof Yuen Yong, Dr Michael Ruppert
Scheme	ARC LIEF
Role	Investigator
Funding Start	2019
Funding Finish	2019
GNo
Type Of Funding	External
Category	EXTE
UON	N

Analysis of Piezoelectric Transducers for High-Resolution and Multifrequency Atomic Force Microscopy in Vacuum$14,252

Funding body: Deutsche Forschungsgemeinschaft German Research Foundation(DFG)

Funding body	Deutsche Forschungsgemeinschaft German Research Foundation(DFG)
Project Team	Michael G. Ruppert, Daniel Ebeling
Scheme	International Cooperation
Role	Lead
Funding Start	2019
Funding Finish	2019
GNo
Type Of Funding	External
Category	EXTE
UON	N

Design and Implementation of Resonant Controllers for Multimode Atomic Force Microscopy$5,000

Funding body: Priority Research Center for Complex Dynamic Systems and Control (PRC CDSC)

Funding body	Priority Research Center for Complex Dynamic Systems and Control (PRC CDSC)
Project Team	Michael G. Ruppert, Yuen K. Yong, Timothy Lim Yong Lee
Scheme	2019 CDSC Undergraduate Research Project
Role	Lead
Funding Start	2019
Funding Finish	2019
GNo
Type Of Funding	Internal
Category	INTE
UON	N

Analysis of Piezoelectric Transducers for High-Resolution and Multifrequency Atomic Force Microscopy in Vacuum$3,632

Funding body: Deutsche Forschungsgemeinschaft German Research Foundation(DFG)

Funding body	Deutsche Forschungsgemeinschaft German Research Foundation(DFG)
Project Team	Doctor Michael Ruppert, Dr Daniel Ebeling
Scheme	International Cooperation
Role	Lead
Funding Start	2019
Funding Finish	2019
GNo	G1900629
Type Of Funding	C3211 - International For profit
Category	3211
UON	Y

Modelling and Feasibility Study of Alternative Materials and Tip Geometries for TERS Imaging$2,500

Funding body: Priority Research Center for Complex Dynamic Systems and Control (PRC CDSC)

Funding body	Priority Research Center for Complex Dynamic Systems and Control (PRC CDSC)
Project Team	L. McCourt, B. Routley, M. G. Ruppert, V. Keast, A. J. Fleming
Scheme	2019 HDR Travel Support
Role	Investigator
Funding Start	2019
Funding Finish	2019
GNo
Type Of Funding	Internal
Category	INTE
UON	N

Conference Travel Grant$2,500

Int. Conference on Manipulation, Automation and Robotics at Small Scales (MARSS) 2019

Funding body: Faculty of Engineering and Built Environment - The University of Newcastle (Australia)

Funding body	Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
Project Team	Michael Ruppert
Scheme	Faculty Conference Travel Grant
Role	Lead
Funding Start	2019
Funding Finish	2019
GNo
Type Of Funding	Internal
Category	INTE
UON	N

20173 grants / $67,521

Automated XYZ scanner for Confocal Raman Spectroscopy$43,388

Funding body: The University of Newcastle

Funding body	The University of Newcastle
Project Team	Andrew Fleming, John Holdsworth, Pradeep Tanwar, Michael Ruppert, Yuen Yong
Scheme	UON 2017 Researcher Equipment Grant
Role	Investigator
Funding Start	2017
Funding Finish	2017
GNo
Type Of Funding	Internal
Category	INTE
UON	N

Simultaneous Surface and Material Imaging with Tapping-mode Tip-enhanced Raman Spectroscopy$22,133

Funding body: Faculty of Engineering and Built Environment - The University of Newcastle (Australia)

Funding body	Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
Project Team	Michael Ruppert, Andrew Fleming, Yuen Yong, John Holdsworth, Pradeep Tanwar
Scheme	2017 FEBE Strategic Pilot Grant
Role	Lead
Funding Start	2017
Funding Finish	2017
GNo
Type Of Funding	Internal
Category	INTE
UON	N

Conference Travel Grant$2,000

IFAC World Congress

Funding body: Faculty of Engineering and Built Environment - The University of Newcastle (Australia)

Funding body	Faculty of Engineering and Built Environment - The University of Newcastle (Australia)
Project Team	Michael Ruppert
Scheme	Faculty Conference Travel Grant
Role	Lead
Funding Start	2017
Funding Finish	2017
GNo
Type Of Funding	Internal
Category	INTE
UON	N

20151 grants / $2,000

Conference Travel Grant$2,000

Funding body: Zurich Instruments AG

Funding body	Zurich Instruments AG
Project Team	Michael Ruppert
Scheme	Travel Grant
Role	Lead
Funding Start	2015
Funding Finish	2015
GNo
Type Of Funding	External
Category	EXTE
UON	N

20141 grants / $37,585

Cantilever mass sensing application in a microfluidic device$37,585

Funding body: CSIRO - Commonwealth Scientific and Industrial Research Organisation

Funding body	CSIRO - Commonwealth Scientific and Industrial Research Organisation
Project Team	Prof. Reza Moheimani, Mr. Michael Ruppert
Scheme	Postgraduate Scholarship
Role	Investigator
Funding Start	2014
Funding Finish	2016
GNo
Type Of Funding	Other Public Sector - Commonwealth
Category	2OPC
UON	N

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Research Supervision

Number of supervisions

Completed2

Current0

Past Supervision

Year	Level of Study	Research Title	Program	Supervisor Type
2015	Honours	High-speed Estimation in Multifrequency Atomic Force Microscopy Final Year Project for the degree of Bachelor of Engineering in Electrical Engineering (Honours) at The University of Newcastle.	Electrical Engineering, Faculty of Engineering and Built Environment - The University of Newcastle (Australia)	Principal Supervisor
2014	Honours	State Estimation using A Kalman Filter in Tapping-Mode Atomic Force Microscopy Final Year Project for the degree of Bachelor of Mechatronics Engineering at the University of Newcastle.	Electrical Engineering, Faculty of Engineering and Built Environment - The University of Newcastle (Australia)	Co-Supervisor

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Research Projects

Novel Microcantilevers for Multifrequency Atomic Force Microscopy 2016 -

This work motivates a class of probes based on microelectromechanical system (MEMS) design with integrated actuators and sensors optimized for multifrequency operation. Specifically, integrated piezoelectric transduction schemes enable the miniaturization of the Atomic Force Microscope towards a cost-effective single-chip device with nanoscale precision in a much smaller form factor than that of conventional macroscale instruments.

Grants

Novel Microcantilevers for Multifrequency Atomic Force Microscopy

Funding body: ARC (Australian Research Council)

Funding body	ARC (Australian Research Council)
Project Team	Associate Professor Yuen Yong
Scheme	Discovery Projects

Publications

Moore SI, Ruppert MG, Yong YK, 'Multimodal cantilevers with novel piezoelectric layer topology for sensitivity enhancement', BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 8 358-371 (2017) [C1]

Collaborators

Name	Organisation
Mr Steven Ian Moore	University of Newcastle
Doctor Michael Gunter Ruppert	University of Newcastle
Associate Professor Yuen Yong	University of Newcastle

Demodulation Techniques for High-Speed and Multifrequency Atomic Force Microscopy 2015 - 2019

The demodulator is a crucial bandwidth-limiting component in the z-axis feedback loop of an atomic force microscope. Specifically for
modern multi-frequency techniques, where higher harmonic and/or higher eigenmode contributions are present in the oscillation signal, the fidelity of the estimates obtained from some traditional demodulation techniques is not guaranteed. This project proposes novel demodulation schemes with high measurement bandwidth, multi-frequency capability and low measurement noise which are rigorously compared against traditional techniques.

Publications

Ruppert MG, Harcombe DM, Moheimani SOR, 'High-Bandwidth Demodulation in MF-AFM: A Kalman Filtering Approach', IEEE-ASME TRANSACTIONS ON MECHATRONICS, 21 2705-2715 (2016) [C1]

Ruppert MG, Harcombe DM, Reza Moheimani SO, 'State estimation for high-speed multifrequency atomic force microscopy', Proceedings of the 2016 American Control Conference, Boston, MA (2016) [E1]

Ruppert MG, Maroufi M, Bazaei A, Moheimani SOR, 'Kalman Filter Enabled High-Speed Control of a MEMS Nanopositioner', IFAC PAPERSONLINE, Toulouse, FRANCE (2017) [E1]

Collaborators

Name	Organisation
Michael Remo Palmén Ragazzon	Norwegian University of Science And Technology

Emerging Control Challenges in Multifreqency Atomic Force Microscopy 2016 - 2019

Integrated actuation and sensing with piezoelectric transduction schemes enables the development of a multimode controllers which exhibits remarkable performance in arbitrarily modifying the quality factor of multiple eigenmodes and comes with inherent stability robustness. The goal of these controllers is to provide improved imaging stability, higher scan speeds and adjustable contrast when mapping nanomechanical properties of soft samples.

Publications

Ruppert MG, Moheimani SOR, 'Multimode Q Control in Tapping-Mode AFM: Enabling Imaging on Higher Flexural Eigenmodes', IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, 24 1149-1159 (2016) [C1]

Maroufi M, Ruppert MG, Fowler AG, Moheimani SOR, 'Design and control of a single-chip SOI-MEMS atomic force microscope', Proceedings of the 2017 American Control Conference, Seattle, USA (2017) [E1]

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Research Collaborations

The map is a representation of a researchers co-authorship with collaborators across the globe. The map displays the number of publications against a country, where there is at least one co-author based in that country. Data is sourced from the University of Newcastle research publication management system (NURO) and may not fully represent the authors complete body of work.

	Country	Count of Publications
	Australia	40
	United States	11
	Norway	6
	Switzerland	2
	Canada	1

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