Dielectric Sensors Based on Electromagnetic Energy Tunneling
We show that metallic wires embedded in narrow waveguide bends and channels demonstrate resonance behavior at specific frequencies. The electromagnetic energy at these resonances tunnels through the narrow waveguide channels with almost no propagation losses. Under the tunneling behavior, high-inten...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-03-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/15/4/7844 |
| _version_ | 1818034704796876800 |
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| author | Omar Siddiqui Mani Kashanianfard Omar Ramahi |
| author_facet | Omar Siddiqui Mani Kashanianfard Omar Ramahi |
| author_sort | Omar Siddiqui |
| collection | DOAJ |
| description | We show that metallic wires embedded in narrow waveguide bends and channels demonstrate resonance behavior at specific frequencies. The electromagnetic energy at these resonances tunnels through the narrow waveguide channels with almost no propagation losses. Under the tunneling behavior, high-intensity electromagnetic fields are produced in the vicinity of the metallic wires. These intense field resonances can be exploited to build highly sensitive dielectric sensors. The sensor operation is explained with the help of full-wave simulations. A practical setup consisting of a 3D waveguide bend is presented to experimentally observe the tunneling phenomenon. The tunneling frequency is predicted by determining the input impedance minima through a variational formula based on the Green function of a probe-excited parallel plate waveguide. |
| first_indexed | 2024-12-10T06:43:24Z |
| format | Article |
| id | doaj.art-079cc9c498af4ded888f856b74654d47 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-12-10T06:43:24Z |
| publishDate | 2015-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-079cc9c498af4ded888f856b74654d472022-12-22T01:58:43ZengMDPI AGSensors1424-82202015-03-011547844785610.3390/s150407844s150407844Dielectric Sensors Based on Electromagnetic Energy TunnelingOmar Siddiqui0Mani Kashanianfard1Omar Ramahi2College of Engineering, Taibah University, University Road, Madinah, Saudi ArabiaDepartment of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48109, USADepartment of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, CanadaWe show that metallic wires embedded in narrow waveguide bends and channels demonstrate resonance behavior at specific frequencies. The electromagnetic energy at these resonances tunnels through the narrow waveguide channels with almost no propagation losses. Under the tunneling behavior, high-intensity electromagnetic fields are produced in the vicinity of the metallic wires. These intense field resonances can be exploited to build highly sensitive dielectric sensors. The sensor operation is explained with the help of full-wave simulations. A practical setup consisting of a 3D waveguide bend is presented to experimentally observe the tunneling phenomenon. The tunneling frequency is predicted by determining the input impedance minima through a variational formula based on the Green function of a probe-excited parallel plate waveguide.http://www.mdpi.com/1424-8220/15/4/7844energy tunnelingdielectric sensorsmetamaterialsmetallic wire mediumwaveguides |
| spellingShingle | Omar Siddiqui Mani Kashanianfard Omar Ramahi Dielectric Sensors Based on Electromagnetic Energy Tunneling Sensors energy tunneling dielectric sensors metamaterials metallic wire medium waveguides |
| title | Dielectric Sensors Based on Electromagnetic Energy Tunneling |
| title_full | Dielectric Sensors Based on Electromagnetic Energy Tunneling |
| title_fullStr | Dielectric Sensors Based on Electromagnetic Energy Tunneling |
| title_full_unstemmed | Dielectric Sensors Based on Electromagnetic Energy Tunneling |
| title_short | Dielectric Sensors Based on Electromagnetic Energy Tunneling |
| title_sort | dielectric sensors based on electromagnetic energy tunneling |
| topic | energy tunneling dielectric sensors metamaterials metallic wire medium waveguides |
| url | http://www.mdpi.com/1424-8220/15/4/7844 |
| work_keys_str_mv | AT omarsiddiqui dielectricsensorsbasedonelectromagneticenergytunneling AT manikashanianfard dielectricsensorsbasedonelectromagneticenergytunneling AT omarramahi dielectricsensorsbasedonelectromagneticenergytunneling |