Frequency-reconfigurable colloidal dispersion-based filtering devices
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Many electronics today are susceptible to harm caused by high power transient waveforms. To protect electronic devices and systems from high power transient waveforms, shielding or some form of electronic hardening is required. A potential method for protecting electronic devices and systems from high power transient waveforms is the use of colloidal microstruc- tures. Recent experiments done characterizing the AC electrical properties of colloidal dis- persions show that the geometry of the colloids in the microstructure can be manipulated by frequency. This project intends to use colloidal dispersions to create frequency recon- gurable transmission line structures. The frequency recon gurable structures, based on a coaxial line and a coplanar waveguide, will be simulated in HFSS and fabricated in Texas A&M Electromagnetics and Microwaves Laboratories. Microscopy will be used to monitor the motion of the particles within the transmission line structures, and the small signal pa- rameters of the structures will be measured using a network analyzer. The end result of the project will be an equivalent circuit model per unit length that characterizes the colloidal dispersion-based transmission line structure.
Couch, Amanda M (2014). Frequency-reconfigurable colloidal dispersion-based filtering devices. Undergraduate Research Scholars Program. Available electronically from