Magnetoelastic sensors for remote query environmental monitoring

Grimes, Craig A.; Ong, Keat Ghee; Loiselle, Keith; Stoyanov, P.G.; Kouzoudis, Dimitris; Liu, Y; Tong, Cunzhu; Tefiku, F.

doi:10.1088/0964-1726/8/5/314

Cited by 108 publications

(85 citation statements)

References 21 publications

(25 reference statements)

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“…The resonant frequency of the transiently excited sensor can also be determined by counting the zero crossings of the sensor response for a given time period. Alternatively, the magnetoelastic sensors can be interrogated in the frequency domain by sweeping the frequency and recording the measured amplitude each incremental frequency [22].…”

Section: Introductionmentioning

confidence: 99%

Wireless Magnetoelastic Resonance Sensors: A Critical Review

Grimes

Mungle

Zeng

et al. 2002

Sensors

197

159

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This paper presents a comprehensive review of magnetoelastic environmental sensor technology; topics include operating physics, sensor design, and illustrative applications. Magnetoelastic sensors are made of amorphous metallic glass ribbons or wires, with a characteristic resonant frequency inversely proportional to length. The remotely detected resonant frequency of a magnetoelastic sensor shifts in response to different physical parameters including stress, pressure, temperature, flow velocity, liquid viscosity, magnetic field, and mass loading. Coating the magnetoelastic sensor with a mass changing, chemically responsive layer enables realization of chemical sensors. Magnetoelastic sensors can be remotely interrogated by magnetic, acoustic, or optical means. The sensors can be characterized in the time domain, where the resonant frequency is determined through analysis of the sensor transient response, or in the frequency domain where the resonant frequency is determined from the frequency-amplitude spectrum of the sensor.

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Section: Introductionmentioning

confidence: 99%

Wireless Magnetoelastic Resonance Sensors: A Critical Review

Grimes

Mungle

Zeng

et al. 2002

Sensors

197

159

View full text Add to dashboard Cite

show abstract

“…In combination with different chemically responsive layers the sensing technology could be extended to other in situ or in vivo monitoring applications 12,13 such as gastric pH or glucose. 14 …”

Section: Discussionmentioning

confidence: 99%

Magnetoelastic sensors in combination with nanometer-scale honeycombed thin film ceramic TiO2 for remote query measurement of humidity

Grimes¹,

Kouzoudis²,

Dickey³

et al. 2000

Journal of Applied Physics

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Ribbonlike magnetoelastic sensors can be considered the magnetic analog of an acoustic bell; in response to an externally applied magnetic field impulse the sensors emit magnetic flux with a characteristic resonant frequency. The magnetic flux can be detected external to the test area using a pick-up coil, enabling query remote monitoring of the sensor. The characteristic resonant frequency of a magnetoelastic sensor changes in response to mass loads ͓L. D. Landau and E. M. Lifshitz, Theory of Elasticity, 3rd ed. ͑Pergamon, New York, 1986͒, p. 100͔. Therefore, remote query chemical sensors can be fabricated by combining the magnetoelastic sensors with a mass changing, chemically responsive layer. In this work magnetoelastic sensors are coated with humidity-sensitive thin films of ceramic, nanodimensionally porous TiO 2 to make remote query humidity sensors.

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“…2,8 Such sensors have been successfully used for physical, chemical, and biological sensing. [3][4][5][6] The materials typically used for magnetostrictive sensor applications are amorphous magnetostrictive ribbons of about 25 lm thickness fabricated by melt spinning. So far, these sensors have been operated by external coils for actuation and sensing.…”

Section: Microfabrication Of Magnetostrictive Beams Based On Nife Filmentioning

confidence: 99%

“…The Young's modulus for the magnetostrictive material is 100-110 GPa, and the density is 7:54 g=cm 3 . Loading the beam with a mass, for example, a biological target analyte, will change the effective value of q.…”

Section: A Sensor Designmentioning

confidence: 99%

Microfabrication of magnetostrictive beams based on NiFe film doped with B and Mo for integrated sensor systems

Alfadhel

Gianchandani

Kosel

2012

Journal of Applied Physics

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This paper reports the development of integrated micro-sensors consisting of 1 -µm-thick magnetostrictive cantilevers or bridges with 500 µm in length and conducting interrogation elements. The thin films are fabricated by sputter deposition of NiFe doped with B and Mo, and the magnetic properties are enhanced by field annealing, resulting in a coercivity of 2.4 Oe. In operation, an alternating current applied to the interrogation elements magnetizes the magnetostrictive structures. The longitudinal resonant frequency is detected as an impedance change of the interrogation elements. The magnetostrictive micro-beams provide high resonant frequencies—2.95 MHz for the cantilever and 5.46 MHz for the bridge—which can be exploited to develop sensors of high sensitivity.

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Magnetoelastic sensors for remote query environmental monitoring

Cited by 108 publications

References 21 publications

Wireless Magnetoelastic Resonance Sensors: A Critical Review

Wireless Magnetoelastic Resonance Sensors: A Critical Review

Magnetoelastic sensors in combination with nanometer-scale honeycombed thin film ceramic TiO2 for remote query measurement of humidity

Microfabrication of magnetostrictive beams based on NiFe film doped with B and Mo for integrated sensor systems

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