Indefinite materials
First Claim
Patent Images
1. A compensating multi-layer material comprising:
- an indefinite anisotropic first layer having material properties of ε
1 and μ
1, both of ε
1 and μ
1 being tensors, and a thickness d1;
an indefinite anisotropic second layer adjacent to said first layer, said second layer having material properties of ε
2 and μ
2, both of ε
2 and μ
2 being tensors, and having a thickness d2; and
, wherein ε
1, μ
1, ε
2, and μ
2 are simultaneously diagonalizable in a diagonalizing basis that includes a layer normal to said first and second layers, and and φ
is a tensor represented in said diagonalizing basis with a third basis vector that is normal to said first and second layers.
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Abstract
A compensating multi layer material includes two compensating layers adjacent to one another. A multi-layer embodiment of the invention produces subwavelength near-field focusing, but mitigates the thickness and loss limitations of the isotropic “perfect lens”. An antenna substrate comprises an indefinite material.
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Citations
36 Claims
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1. A compensating multi-layer material comprising:
-
an indefinite anisotropic first layer having material properties of ε
1 and μ
1, both of ε
1 and μ
1 being tensors, and a thickness d1;
an indefinite anisotropic second layer adjacent to said first layer, said second layer having material properties of ε
2 and μ
2, both of ε
2 and μ
2 being tensors, and having a thickness d2; and
,wherein ε
1, μ
1, ε
2, and μ
2 are simultaneously diagonalizable in a diagonalizing basis that includes a layer normal to said first and second layers, andand φ
is a tensor represented in said diagonalizing basis with a third basis vector that is normal to said first and second layers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A compensating multi-layer material comprising:
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an indefinite anisotropic first layer having material properties of ε
1 and μ
1, both of ε
1 and μ
1 being tensors, and a thickness d1;
an indefinite anisotropic second layer adjacent to said first layer, said second layer having material properties of ε
2 and μ
2, both of ε
2 and μ
2 being tensors, and having a thickness d2,wherein the necessary tensor components for compensation satisfy;
and ψ
is a tensor represented in said diagonalizing basis with a third basis vector that is normal to said first and second layers, where the necessary components are;
ε
y, μ
x, μ
z for y-axis electric polarization, ε
x, μ
y, μ
z for x-axis electric polarization, μ
y, ε
x, ε
z, for y-axis magnetic polarization, and μ
x, ε
y, ε
z for x-axis magnetic polarization; and
wherein the other tensor components may assume any value including values for free space.
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- 30. An antenna substrate comprising an indefinite layer.
Specification