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Terahertz Plasmonic Structures with Spatially Varying Conductivity

Objective:  Develop plasmonic structures in which the
spatial conductivity
can be varied

Approach: Use a
commercial inkjet printer with
conductive silver ink

resistive carbon
ink filled in separate cartridges. Use
conventional presentation software to design and print plasmonic structures
with desired spatial variation.


and Significance
: Using THz imaging, we measured the
changes in the transmitted beam profile as a function of the spatial
conductivity pattern. Results demonstrate that the change in conductivity
corresponds directly to changes in surface plasmon polariton propagation lengths,
yielding additional flexibility in creating new plasmonic structures.