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| Artículos de revistas
Phase-Locked loops lock-in range in Frequency Modulated-Atomic Force Microscope nonlinear control system
dc.creator | Bueno, Atila Madureira | |
dc.creator | Balthazar, Jose Manoel | |
dc.creator | Castilho Piqueira, Jose Roberto | |
dc.date.accessioned | 2013-11-01T11:31:42Z | |
dc.date.accessioned | 2018-07-04T16:08:43Z | |
dc.date.available | 2013-11-01T11:31:42Z | |
dc.date.available | 2018-07-04T16:08:43Z | |
dc.date.created | 2013-11-01T11:31:42Z | |
dc.date.issued | 2012 | |
dc.identifier | COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION, AMSTERDAM, v. 17, n. 7, supl. 1, Part 3, pp. 3101-3111, JUL, 2012 | |
dc.identifier | 1007-5704 | |
dc.identifier | http://www.producao.usp.br/handle/BDPI/37407 | |
dc.identifier | 10.1016/j.cnsns.2011.11.023 | |
dc.identifier | http://dx.doi.org/10.1016/j.cnsns.2011.11.023 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1632011 | |
dc.description.abstract | Since the mid 1980s the Atomic Force Microscope is one the most powerful tools to perform surface investigation, and since 1995 Non-Contact AFM achieved true atomic resolution. The Frequency-Modulated Atomic Force Microscope (FM-AFM) operates in the dynamic mode, which means that the control system of the FM-AFM must force the micro-cantilever to oscillate with constant amplitude and frequency. However, tip-sample interaction forces cause modulations in the microcantilever motion. A Phase-Locked loop (PLL) is used to demodulate the tip-sample interaction forces from the microcantilever motion. The demodulated signal is used as the feedback signal to the control system, and to generate both topographic and dissipation images. As a consequence, a proper design of the PLL is vital to the FM-AFM performance. In this work, using bifurcation analysis, the lock-in range of the PLL is determined as a function of the frequency shift (Q) of the microcantilever and of the other design parameters, providing a technique to properly design the PLL in the FM-AFM system. (C) 2011 Elsevier B.V. All rights reserved. | |
dc.language | eng | |
dc.publisher | ELSEVIER SCIENCE BV | |
dc.publisher | AMSTERDAM | |
dc.relation | COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION | |
dc.rights | Copyright ELSEVIER SCIENCE BV | |
dc.rights | closedAccess | |
dc.subject | FREQUENCY-MODULATED ATOMIC FORCE | |
dc.subject | MICROSCOPY | |
dc.subject | PHASE-LOCKED LOOPS | |
dc.subject | BIFURCATION | |
dc.subject | NONLINEAR DYNAMICS | |
dc.subject | MATHEMATICAL MODEL | |
dc.title | Phase-Locked loops lock-in range in Frequency Modulated-Atomic Force Microscope nonlinear control system | |
dc.type | Artículos de revistas |