Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Specific absorption rate in electrically coupled biological samples between metal plates.

W T Joines, C F Blackman, R J Spiegel

    Bioelectromagnetics
    |January 1, 1986
    PubMed
    Summary

    The specific absorption rate (SAR) in biological samples is affected by transmission line metal plate spacing and sample arrangement. Closer plates increase SAR, while closer samples decrease it, as confirmed by calculations and experiments.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Treating cancer with amplitude-modulated electromagnetic fields: a potential paradigm shift, again?

    British journal of cancer·2012
    Same author

    Analysis of the structure of magnetic fields that induced inhibition of stimulated neurite outgrowth.

    Bioelectromagnetics·2005
    Same author

    Design and analysis of annular antenna arrays with different reflectors.

    International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·2004
    Same author

    Technical assessment of fuel cell operation on anaerobic digester gas at the Yonkers, NY, wastewater treatment plant.

    Waste management (New York, N.Y.)·2003
    Same author

    Variations of focal regions versus numbers and positions of sources in two-dimensional media.

    International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·2001
    Same author

    Physiological levels of melatonin enhance gap junction communication in primary cultures of mouse hepatocytes.

    Cell biology and toxicology·2001

    Area of Science:

    • Electromagnetics
    • Biophysics
    • Computational Physics

    Background:

    • Specific Absorption Rate (SAR) is crucial for understanding electromagnetic field interactions with biological tissues.
    • Transmission line configurations are used in electromagnetic field exposure studies.
    • Sample spacing and device geometry can influence electromagnetic field distribution and SAR.

    Purpose of the Study:

    • To investigate how metal plate spacing and neighboring sample arrangements affect SAR in biological samples.
    • To develop and validate a computational model for predicting SAR under these conditions.

    Main Methods:

    • Utilized the method of images and induced dipole coupling for SAR calculations.
    • Modeled spherical biological samples within a parallel plate transmission line.

    Related Experiment Videos

  • Conducted experimental measurements using an array of metal hemispheres connected to a spectrum analyzer.

    • Main Results:

    • Decreasing metal plate spacing was predicted to increase SAR.
    • Decreasing neighboring sample spacing was predicted to decrease SAR.
    • Experimental measurements at 48 Hz showed good agreement with calculated values.

    Conclusions:

    • Metal plate spacing and sample proximity are significant factors influencing SAR.
    • The method of images and induced dipole coupling provide accurate predictions for SAR in this configuration.
    • Findings are relevant for designing controlled electromagnetic exposure systems for biological research.