Dielectric sensing in ε-near-zero narrow waveguide channels
By Andrea Alù, Nader Engheta. 2008
153 citations recorded by the source corpus.
We exploit here the dramatic field enhancement caused by energy squeezing and tunneling (i.e., 'supercoupling') in metamaterial-inspired ultranarrow waveguide channels with near-zero effective permittivity in order to sense small permittivity variations in a tiny object. The supercoupling effect is accurately modeled analytically and closed-form expressions are derived to describe the presence of defects or permittivity perturbations along the channel. Applications for tailoring its pass-band frequency and for high-Q sensing are proposed at microwave frequencies.
Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/8a91541655ce266dbb5941a8296583be4611c2f6
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In Aerospace Engineering
In Electronic, Optical and Magnetic Materials
Citations in the corpus
- Displacement Sensor Based on Diamond-Shaped Tapered Split Ring Resonator (2013, background): “This is evidenced by the increasing number of publications proposing the application of metamaterial particles in various types of sensors such as chemical sensing with enhanced sensitivity [15], biosensing [16], enhanced molecular detection techniques based on metamaterials [17], [18], metamaterial”
- Rotation Sensor Based on Horn-Shaped Split Ring Resonator (2013, background): “Also, it has been shown that metamaterialinspired resonators such as split ring resonators (SRRs) are ideal structures for the design of high sensitivity and high resolution sensors because of their high quality factor resonance, subwavelength dimensions, as well as sensitivity to changes in surroun”
- Metamaterials Application in Sensing (2012, methodology): “[25] proposed a method of dielectric sensing by using ε near-zero narrow waveguide channels.”