title: Improved detection of magnetic signals by a MEMS sensor using stochastic resonance.
abstract: We introduce the behavior of the electrical output response of a magnetic field sensor based on microelectromechanical systems (MEMS) technology under different levels of controlled magnetic noise. We explored whether a particular level of magnetic noise applied on the vicinity of the MEMS sensor can improve the detection of subthreshold magnetic fields. We examined the increase in the signal-to-noise ratio (SNR) of such detected magnetic fields as a function of the magnetic noise intensity. The data disclosed an inverted U-like graph between the SNR and the applied magnetic noise. This finding shows that the application of an intermediate level of noise in the environment of a MEMS magnetic field sensor improves its detection capability of subthreshold signals via the stochastic resonance phenomenon.
authors.affiliation: Micro and Nanotechnology Research Center, Universidad Veracruzana, Boca del Río, Veracruz, México.
authors.forename: Agustín L
authors.initials: AL
authors.lastname: Herrera-May
authors.affiliation: School of Biology, Benemérita Universidad Autónoma de Puebla, Puebla, Puebla, México.
authors.forename: Jesus A
authors.initials: JA
authors.lastname: Tapia
authors.affiliation: Micro and Nanotechnology Research Center, Universidad Veracruzana, Boca del Río, Veracruz, México; Department of Automatic Control, CINVESTAV-IPN, Mexico City, Distrito Federal, México.
authors.forename: Saúl M
authors.initials: SM
authors.lastname: Domínguez-Nicolás
authors.affiliation: Micro and Nanotechnology Research Center, Universidad Veracruzana, Boca del Río, Veracruz, México.
authors.forename: Raul
authors.initials: R
authors.lastname: Juarez-Aguirre
authors.affiliation: Department of Electronics, Instituto Nacional de Astrofísica Óptica y Electrónica, INAOE, Puebla, Puebla, México.
authors.forename: Edmundo A
authors.initials: EA
authors.lastname: Gutierrez-D
authors.affiliation: Institute of Physiology, Benemérita Universidad Autónoma de Puebla, Puebla, Puebla, México.
authors.forename: Amira
authors.initials: A
authors.lastname: Flores
authors.affiliation: Microelectronics Institute of Barcelona, IMB-CNM, CSIC, Bellaterra, Barcelona, Spain.
authors.forename: Eduard
authors.initials: E
authors.lastname: Figueras
authors.affiliation: Institute of Physiology, Benemérita Universidad Autónoma de Puebla, Puebla, Puebla, México.
authors.forename: Elias
authors.initials: E
authors.lastname: Manjarrez
mesh_terms: D006801:Humans; D060526:Magnetic Fields; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation* / Q000379:methods; D008959:Models, Neurological; D059629:Signal-To-Noise Ratio; D013269:Stochastic Processes