title: A four coil exposure system (tetracoil) producing a highly uniform magnetic field.
abstract: We propose a magnetic field exposure system (tetracoil) for in vitro and in vivo experiments, composed of two couples of circular coils satisfying a spherical constraint, whose characteristics are chosen in order to maximize the uniformity region of the magnetic field. Analytical calculations and computer simulations show that our system, as compared to the other most largely used magnetic field exposure systems, represents an optimal compromise in terms of field uniformity, accessibility for biological experiments, and ratio between overall dimension and uniformity region.
authors.affiliation: Department of Physics, University of Bologna, Bologna, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Gottardi
authors.forename: P
authors.initials: P
authors.lastname: Mesirca
authors.forename: C
authors.initials: C
authors.lastname: Agostini
authors.forename: D
authors.initials: D
authors.lastname: Remondini
authors.forename: F
authors.initials: F
authors.lastname: Bersani
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004574:Electromagnetic Fields; D055590:Electromagnetic Phenomena / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000379:methods; D008280:Magnetics / Q000295:instrumentation; D008962:Models, Theoretical; D011874:Radiometry / Q000379:methods