Electromagnetic wave transmission lines using magnetic nanoparticle composites

摘要

The disclosure pertains to a method of orientating particles by their easy axes in a selected area of a composite comprising the particles dispersed in a matrix. The method comprises liquefying and then solidifying the matrix at the selected area while applying an external magnetic field on the composite. The composite can be used for a transmission line component for directing high frequency electromagnetic waves. The particles are preferably superparamagnetic nanocrystallite particles and matrix is preferably a polymeric material.

主权项

1. A method, comprising:
coating a surfactant on surfaces of particles; applying an external magnetic field on a solidified composite comprising the particles dispersed in a matrix; and orienting particles by their easy axes in a selected area of the composite by liquefying the selected area of the matrix and then solidifying the matrix at the selected area to form a path for directing the transmission of electromagnetic waves, wherein the path comprises a waveguide configured to transmit in the 1 to 3 terahertz (THz) range.