Defense Intelligence Reference Document Metamaterials For Aerospace Applications

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Contents
Definition of Metamaterials ................................................................................................................... 1
Applications to Sub-Diffraction Imaging: Super-Lens and Hyper-Lens .................. 6
Applications to Circuits and Waveguide Miniaturization: Slowing Down and
Manipulating Electromagnetic Pulses {EMP) Using Advanced Metamaterials .. ~ .... 16
Metamaterials for Energy Harvesting ................................................................................................._................. 20
Nonlinear Non-Reciprocal Chiral Metamaterials: For Developing Novel Optical
Isolators and ''One-Wayn Microwave Mirrors ...................................................................................... 27
Tunable Switchable Metamaterlals ............................................-........................ u, •.-•• ,.................... 30
Summary and Conclusions ...................................................................................... 31
References .................................................................................................................31
Figures
Figure 1. Example of a Metamaterial Component: The Magnetic Spllt Ring
Resonator (SRR) Design ..................................................................................... 2
Figure 2. Example of Another Metamaterial Component: Electric Ring Resonator
(ERR) ......................................................................................................... 2
Figure 3. Geometry of Orlglnal Planar Metamaterial Unit Cells {OE:1-OE6) and Their
Complement:s (CE1-CE6) ............................................................................. 3
Figure 4. Recent Optlcal Metamaterlals for Telecommunication Wavelength and
Mid-Infrared Indefinite Permittivity Material .......................................... s
Figure 5. Schematic of The Super-lens With n=-1 Refractive Index Corresponding
to ( Surrounded by Vacuum ........................................................................... 7
Figure 6. Schematic of the SIC-based Super-lens Which Is Imaging Sub-wavelength
Holes Buried Under the SiO2 Layer .......................................................... a
Figure 7. Theoretical Concepts (left panel) and Experimental Implementation
(right panel) of an Optical Hyperlens Capable of Magnifying Sub-
Diffraction Objects to Observable (larger than Si;ie................................. 9
Figure 8. Hyperlens Based on a Converging Array of Metal Wires ........................ 10
Figure 9. Far-Field Super-lens {FSL) Based on an Indefinite Permittivity
Metamaterial Placed Between the Object and the Image-Releasing
Grating .................................................................................................................................................................. 12
Figure 10. Tomographic Multl•Beam Multi-Detector Holography of Sub-Wavelength
Objects Using Indefinite Permittivity Medium (IPM) ........................... 12
Figure 11. First Experimental Demonstration of Propagating Sub-Diffraction Waves
In the Indefinite Permittivity Medium (1PM) ....................................... 13
Figure 12. Schematic for 2-Beams/2-Detectors Interferometric Measurement
and Numerical Simulation ..................................................................... 14
Figure 13. Experlmental Setup for 2-Beams/2-Detectors Interferometric
Measurement In the Lab and Preliminary Experimental Results .......... 15
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