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Conference Paper: Advances in magnetometry

TitleAdvances in magnetometry
Authors
KeywordsMagnetic
Noise
Sensor
Issue Date2008
PublisherS P I E - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xml
Citation
Proceedings Of Spie - The International Society For Optical Engineering, 2008, v. 6963 How to Cite?
AbstractInnovations may lead to magnetic sensors with superior performance. Examples of this are the chip scale atomic magnetometer, magnetic tunnel junctions with MgO barriers, and a device for minimizing the effect of 1/f noise, the MEMS flux concentrator. In the chip scale atomic magnetometer, researchers have been able to fabricate the light source, optics, heater, optical cell, and photodiode detector in a stack that passes through a silicon wafer. Theoretical and subsequent experimental work has led to the observation of magnetoresistance values of 400% at room temperature in magnetic tunnel junctions with MgO barriers. The MEMS flux concentrator has the potential to increase the sensitivity of magnetic sensors at low frequencies by more than an order of magnitude. The MEMS flux concentrator does this by shifting the operating frequency to higher frequencies where the 1/f noise is much smaller. The shift occurs because the motion of flux concentrators on MEMS flaps modulates the field at kHz frequencies at the position of the sensor.
Persistent Identifierhttp://hdl.handle.net/10722/158517
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorEdelstein, ASen_US
dc.contributor.authorBurnette, Jen_US
dc.contributor.authorFischer, GAen_US
dc.contributor.authorCheng, SFen_US
dc.contributor.authorEgelhoff Jr, WFen_US
dc.contributor.authorPong, PWTen_US
dc.contributor.authorNowak, ERen_US
dc.date.accessioned2012-08-08T09:00:03Z-
dc.date.available2012-08-08T09:00:03Z-
dc.date.issued2008en_US
dc.identifier.citationProceedings Of Spie - The International Society For Optical Engineering, 2008, v. 6963en_US
dc.identifier.issn0277-786Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/158517-
dc.description.abstractInnovations may lead to magnetic sensors with superior performance. Examples of this are the chip scale atomic magnetometer, magnetic tunnel junctions with MgO barriers, and a device for minimizing the effect of 1/f noise, the MEMS flux concentrator. In the chip scale atomic magnetometer, researchers have been able to fabricate the light source, optics, heater, optical cell, and photodiode detector in a stack that passes through a silicon wafer. Theoretical and subsequent experimental work has led to the observation of magnetoresistance values of 400% at room temperature in magnetic tunnel junctions with MgO barriers. The MEMS flux concentrator has the potential to increase the sensitivity of magnetic sensors at low frequencies by more than an order of magnitude. The MEMS flux concentrator does this by shifting the operating frequency to higher frequencies where the 1/f noise is much smaller. The shift occurs because the motion of flux concentrators on MEMS flaps modulates the field at kHz frequencies at the position of the sensor.en_US
dc.languageengen_US
dc.publisherS P I E - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xmlen_US
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineeringen_US
dc.subjectMagneticen_US
dc.subjectNoiseen_US
dc.subjectSensoren_US
dc.titleAdvances in magnetometryen_US
dc.typeConference_Paperen_US
dc.identifier.emailPong, PWT:ppong@eee.hku.hken_US
dc.identifier.authorityPong, PWT=rp00217en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1117/12.784388en_US
dc.identifier.scopuseid_2-s2.0-44349113598en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-44349113598&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume6963en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridEdelstein, AS=24425632300en_US
dc.identifier.scopusauthoridBurnette, J=8586360600en_US
dc.identifier.scopusauthoridFischer, GA=13606821000en_US
dc.identifier.scopusauthoridCheng, SF=7404681591en_US
dc.identifier.scopusauthoridEgelhoff Jr, WF=7006151986en_US
dc.identifier.scopusauthoridPong, PWT=24071267900en_US
dc.identifier.scopusauthoridNowak, ER=7103283674en_US

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