Sensitivity Enhancement of Near Field Probes Using Negative Materials
Citations
2 citations
Cites background from "Sensitivity Enhancement of Near Fie..."
...This enhancement takes the form of higher sensitivity, improved resolution and/or lower operating frequency [1, 2, 3, 4, 5]....
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...2 loss tangent; (b) same scan without a single negative layer (reproduced with permission) [3]....
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...1 (b) is the image obtained when the sensor is used directly, and so suffers from low lateral resolution [3]....
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References
14,065 citations
"Sensitivity Enhancement of Near Fie..." refers background in this paper
...Therefore a dipole oriented in ẑ direction has a constant current distribution as [90]...
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10,974 citations
"Sensitivity Enhancement of Near Fie..." refers background or methods or result in this paper
...Although the theory of the evanescent field imaging using DNG materials, in the context of superlensing, is well developed, its application to evanescent probe imaging has not been fully explored since the previous studies focused on detecting the evanescent spectrum emanating from an object [5,75]....
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...A μ-negative SNG layer amplifies TE evanescent modes while an -negative SNG layer amplifies TM evanescent modes [5]....
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...DNG materials have gathered the attention of many scientists and engineers since the discovery of superlensing effect [5] and the physical realization of DNG materials [26]....
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...The recently discovered evanescent field amplification phenomenon [5] has the potential of altering classical understanding of near field probes....
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...Theoretical field calculations in DNG materials and transmission through a DNG lens were reported in previous works [5, 62, 63]....
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10,495 citations
Additional excerpts
...The idea of materials having negative and μ simultaneously was introduced in 1968 by Vaselago, [55]....
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10,459 citations
"Sensitivity Enhancement of Near Fie..." refers background or methods in this paper
...If the change in the permittivity and permeability are small then the field distributions can be assumed unchanged and the resonance frequency becomes [47] 4fr fr = ∫ v(4 |E0| 2 +4μ|H0|(2))dv ∫ v( 0|E0|(2) + μ0|H0|(2))dv ....
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...The inner radius and outer radius of the coaxial line satisfy [47] rout rin = e0 √ /μ = 2....
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...The cutoff frequency of a dielectric loaded waveguide is given by [47]...
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...The cutoff frequency of a TEmn or TMmn mode in a rectangular waveguide is given by [47]...
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...By assuming that there is a change in the permittivity and permeability with an unchanged geometry, the resonance frequency shift, 4fr, is calculated using [21,46,47] 4fr fr = ∫ v(4 E1 ·E0 +4μH1 ·H0)dv ∫ v( 0|E0|(2) + μ0|H0|(2))dv (1....
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