dor_id: 45654

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351.#.#.b: Journal of Applied Research and Technology

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856.4.0.u: https://jart.icat.unam.mx/index.php/jart/article/view/262/259

100.1.#.a: Márquez, J. A.; Cortés, R.; Siller, H. R.; Coello, V.; Escamilla, D.

524.#.#.a: Márquez, J. A., et al. (2013). Fuzzy logic scheme for tip-sample distance control for a low cost near field optical microscope. Journal of Applied Research and Technology; Vol. 11 Núm. 6. Recuperado de https://repositorio.unam.mx/contenidos/45654

245.1.0.a: Fuzzy logic scheme for tip-sample distance control for a low cost near field optical microscope

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Ciencias Aplicadas y Tecnología, UNAM

264.#.0.c: 2013

264.#.1.c: 2013-12-01

653.#.#.a: Low-cost SNOM; fuzzy logic; nanometric control; shear-force

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001.#.#.#: 074.oai:ojs2.localhost:article/262

041.#.7.h: eng

520.3.#.a: The control of the distance between the surface and the tip-sample of a Scanning Near Field Optical Microscope(SNOM) is essential for a reliable surface mapping. The control algorithm should be able to maintain the system in aconstant distance between the tip and the surface. In this system, nanometric adjustments should be made in order tosense topographies at the same scale with an appropriate resolution. These kinds of devices varies its propertiesthrough short periods of time, and it is required a control algorithm capable of handle these changes. In this work afuzzy logic control scheme is proposed in order to manage the changes the device might have through the time, andto counter the effects of the non-linearity as well. Two inputs are used to program the rules inside the fuzzy logiccontroller, the difference between the reference signal and the sample signal (error), and the speed in which itdecreases or increases. A lock-in amplifier is used as data acquisition hardware to sample the high frequency signalsused to produce the tuning fork oscillations. Once these variables are read the control algorithm calculate a voltageoutput to move the piezoelectric device, approaching or removing the tip-probe from the sample analyzed.

773.1.#.t: Journal of Applied Research and Technology; Vol. 11 Núm. 6

773.1.#.o: https://jart.icat.unam.mx/index.php/jart

022.#.#.a: ISSN electrónico: 2448-6736; ISSN: 1665-6423

310.#.#.a: Bimestral

264.#.1.b: Instituto de Ciencias Aplicadas y Tecnología, UNAM

doi: https://doi.org/10.1016/S1665-6423(13)71595-5

harvesting_date: 2023-11-08 13:10:00.0

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last_modified: 2024-03-19 14:00:00

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Artículo

Fuzzy logic scheme for tip-sample distance control for a low cost near field optical microscope

Márquez, J. A.; Cortés, R.; Siller, H. R.; Coello, V.; Escamilla, D.

Instituto de Ciencias Aplicadas y Tecnología, UNAM, publicado en Journal of Applied Research and Technology, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Cita

Márquez, J. A., et al. (2013). Fuzzy logic scheme for tip-sample distance control for a low cost near field optical microscope. Journal of Applied Research and Technology; Vol. 11 Núm. 6. Recuperado de https://repositorio.unam.mx/contenidos/45654

Descripción del recurso

Autor(es)
Márquez, J. A.; Cortés, R.; Siller, H. R.; Coello, V.; Escamilla, D.
Tipo
Artículo de Investigación
Área del conocimiento
Ingenierías
Título
Fuzzy logic scheme for tip-sample distance control for a low cost near field optical microscope
Fecha
2013-12-01
Resumen
The control of the distance between the surface and the tip-sample of a Scanning Near Field Optical Microscope(SNOM) is essential for a reliable surface mapping. The control algorithm should be able to maintain the system in aconstant distance between the tip and the surface. In this system, nanometric adjustments should be made in order tosense topographies at the same scale with an appropriate resolution. These kinds of devices varies its propertiesthrough short periods of time, and it is required a control algorithm capable of handle these changes. In this work afuzzy logic control scheme is proposed in order to manage the changes the device might have through the time, andto counter the effects of the non-linearity as well. Two inputs are used to program the rules inside the fuzzy logiccontroller, the difference between the reference signal and the sample signal (error), and the speed in which itdecreases or increases. A lock-in amplifier is used as data acquisition hardware to sample the high frequency signalsused to produce the tuning fork oscillations. Once these variables are read the control algorithm calculate a voltageoutput to move the piezoelectric device, approaching or removing the tip-probe from the sample analyzed.
Tema
Low-cost SNOM; fuzzy logic; nanometric control; shear-force
Idioma
eng
ISSN
ISSN electrónico: 2448-6736; ISSN: 1665-6423

Enlaces