dc.contributor.author | Harcombe, David M. | |
dc.contributor.author | Ruppert, Michael G. | |
dc.contributor.author | Ragazzon, Michael Remo Palmén | |
dc.contributor.author | Fleming, Andrew J. | |
dc.date.accessioned | 2018-06-01T08:16:00Z | |
dc.date.available | 2018-06-01T08:16:00Z | |
dc.date.created | 2018-01-12T14:50:35Z | |
dc.date.issued | 2017 | |
dc.identifier.citation | IEEE ASME International Conference on Advanced Intelligent Mechatronics. 2017, 725-730. | nb_NO |
dc.identifier.issn | 2159-6247 | |
dc.identifier.uri | http://hdl.handle.net/11250/2500009 | |
dc.description.abstract | A major difficulty in multifrequency atomic force microscopy (MF-AFM) is the accurate estimation of amplitude and phase at multiple frequencies for both z-axis feedback and material contrast imaging. A lock-in amplifier is typically chosen for its narrowband response and ease of implementation. However, its bandwidth is limited due to post mixing low-pass filters and multiple are required in parallel for MF-AFM. This paper proposes a multifrequency demodulator in the form of a model-based Lyapunov filter implemented on a Field Programmable Gate Array (FPGA). System modelling and simulations are verified by experimental results demonstrating high tracking bandwidth and off-mode rejection at modelled frequencies. Additionally, AFM scans with a five-frequency-based system are presented wherein higher harmonic imaging is performed up to 1 MHz. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Institute of Electrical and Electronics Engineers (IEEE) | nb_NO |
dc.title | Higher-Harmonic AFM Imaging with a High-Bandwidth Multifrequency Lyapunov Filter | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 725-730 | nb_NO |
dc.source.journal | IEEE ASME International Conference on Advanced Intelligent Mechatronics | nb_NO |
dc.identifier.doi | 10.1109/AIM.2017.8014103 | |
dc.identifier.cristin | 1541728 | |
dc.description.localcode | This article will not be available due to copyright restrictions (c) 2017 by Institute of Electrical and Electronics Engineers (IEEE) | nb_NO |
cristin.unitcode | 194,63,25,0 | |
cristin.unitname | Institutt for teknisk kybernetikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |