Abstract: So-called quantum tunneling varistors are made with a matrix of particles having a nonconductive coating that is deposited on core conductive particles using atomic layer deposition methods. The resulting coated particles have highly uniform, adherent coatings that allow easier production of good quality quantum tunneling varistor devices.

Abstract: So-called quantum tunneling varistors are made with a matrix of particles having a nonconductive coating that is deposited on core conductive particles using atomic layer deposition methods. The resulting coated particles have highly uniform, adherent coatings that allow easier production of good quality quantum tunneling varistor devices.

Abstract: A threat field sensor has a hollow metal enclosure with imperforate side walls except for a single aperture that is small as compared with the wavelength of interfering electromagnetic energy. A coaxial conductor is located in the enclosure cavity and has separate sets of leads interconnected to each conductor end. Electric signals induced in the coaxial conductor and present at the conductor ends by the external electromagnetic fields passing through the enclosure aperture are converted to two corresponding light signals. The light signals are transmitted to remotely located processing apparatus by an optical fiber link where the light signals are converted once again to electric signal counterparts. Summing and differencing these electric signals provides two final signals representative of the electric and magnetic field, respectively.