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Electromagnetic and Acoustic Cloaking

Sprites and Lightning

Ionospheric Remote Sensing

Metamaterials and Engineered Electromagnetic Materials

Magnetospheric Radio Imaging

Mars

Numerical Electromagnetics

Space Physics

Fabricated tunable magnetic metamaterial using on-die BST capacitors.

Simulation of beam refraction in a negative index material.

My group has been involved in many aspects of research on engineered electromagnetic materials, or metamaterials. Some specific accomplishments are the first successful numerical simulation of subwavelength focusing with negative refractive index materials and the first measurement of the spatial distribution of fields inside a metamaterial. Our more recent work has involved embedding active and tunable elements in metamaterial structures to enhance their capabilities, including MEMS switches, BST variable capacitors, and amplifiers.

Metamaterials Papers

• Hand, T. H. and S. A. Cummer, Characterization of Tunable Metamaterial Elements Using MEMS Switches, IEEE Antennas and Wireless Propagation Letters, v. 6, p. 401, 2007. [pdf reprint]

• B.-I. Popa and S. A. Cummer, An architecture for active metamaterial particles ane experimental validation at RF, Microwave and Optical Technology Letters, v. 49, p. 2574, 2007. [pdf reprint]

• Cummer, S. A., and D. Schurig, One path to acoustic cloaking, New Journal of Physics, v. 9, 45, 2007. [pdf reprint]

• Popa, B.-I. and S. A. Cummer, Direct measurement of evanescent wave enhancement inside passive metamaterials, Physical Review E, v. 73, 016617, 2006. [pdf reprint]

• Cummer, S. A., and B.-I. Popa, Wave fields measured inside a negative refractive index metamaterial, Applied Physics Letters, v. 85, p. 4564-4566, 2004. [pdf reprint]

• Cummer, S. A., Simulated causal subwavelength focusing by a negative refractive index slab, Applied Physics Letters, v. 82, p. 1503, 2003. [pdf reprint]

Last update: December 20, 2007