title: The visualization of RF probe electric fields.
abstract: An assembly of resistive paper and liquid crystal sheet, conveniently and cheaply constructed for visual detection of the electric fields associated with an rf probe, is presented. Electrical asymmetries, and "hot-spots" usually associated with conservative electric fields, are easily visualized by the color patterns displayed. The device is of considerable assistance in probe design and the minimization of dielectric loss.
authors.affiliation: Biomedical Engineering & Instrumentation Program, National Center for Research Resources, National Institutes of Health, Bethesda, MD 20892.
authors.forename: C N
authors.initials: CN
authors.lastname: Chen
authors.forename: D I
authors.initials: DI
authors.lastname: Hoult
mesh_terms: D003116:Color; D003461:Crystallography; D004553:Electric Conductivity; D017097:Electric Impedance; D004574:Electromagnetic Fields; D055590:Electromagnetic Phenomena / Q000295:instrumentation*; D006358:Hot Temperature; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation*; D010209:Paper; D013814:Thermal Conductivity