Brasil | Artículos de revistas
dc.creatorBueno, Atila Madureira
dc.creatorBalthazar, Jose Manoel
dc.creatorCastilho Piqueira, Jose Roberto
dc.date.accessioned2013-11-01T11:31:42Z
dc.date.accessioned2018-07-04T16:08:43Z
dc.date.available2013-11-01T11:31:42Z
dc.date.available2018-07-04T16:08:43Z
dc.date.created2013-11-01T11:31:42Z
dc.date.issued2012
dc.identifierCOMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION, AMSTERDAM, v. 17, n. 7, supl. 1, Part 3, pp. 3101-3111, JUL, 2012
dc.identifier1007-5704
dc.identifierhttp://www.producao.usp.br/handle/BDPI/37407
dc.identifier10.1016/j.cnsns.2011.11.023
dc.identifierhttp://dx.doi.org/10.1016/j.cnsns.2011.11.023
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1632011
dc.description.abstractSince 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.languageeng
dc.publisherELSEVIER SCIENCE BV
dc.publisherAMSTERDAM
dc.relationCOMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
dc.rightsCopyright ELSEVIER SCIENCE BV
dc.rightsclosedAccess
dc.subjectFREQUENCY-MODULATED ATOMIC FORCE
dc.subjectMICROSCOPY
dc.subjectPHASE-LOCKED LOOPS
dc.subjectBIFURCATION
dc.subjectNONLINEAR DYNAMICS
dc.subjectMATHEMATICAL MODEL
dc.titlePhase-Locked loops lock-in range in Frequency Modulated-Atomic Force Microscope nonlinear control system
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución