Instrumentation for study of bioelectricity by Lorentz force magnetometry

Bruce C. Towe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A novel close-approach noncryogenic Lorentz force magnetometer has been designed which can detect low-level ionic currents flowing over millimeter-order distances. The basis of the instrument is the measurement of forces experienced by a sample conducting an ionic current flow when it is placed in a strong magnetic field. Current dipole moments of about 180 nA can be detected. Absolute sensitivity of the instrument to magnetic fields is in the 10-pT range. This type of magnetometer has potential application to the measurement of steady bioelectric currents in low mass objects that can be placed on a stage about the size of a microscope slide. This approach lends itself most easily to the measurement of steady or slowly changing bioelectric currents.

Original languageEnglish (US)
Title of host publicationProceedings of the Annual Conference on Engineering in Medicine and Biology
PublisherPubl by IEEE
Number of pages1
Editionpt 4
ISBN (Print)0780302168
StatePublished - Dec 1 1991
EventProceedings of the 13th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Orlando, FL, USA
Duration: Oct 31 1991Nov 3 1991

Publication series

NameProceedings of the Annual Conference on Engineering in Medicine and Biology
Numberpt 4
Volume13
ISSN (Print)0589-1019

Other

OtherProceedings of the 13th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CityOrlando, FL, USA
Period10/31/9111/3/91

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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