Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles
We experimentally demonstrate the integration of a microfluidic trap array on top of metamaterial resonators for size selective trapping and remote sensing of microparticles. A split-ring resonator (SRR) design supports strongly confined electric field in the capacitive split gap at the fundamental...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2017
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| Online Access: | https://hdl.handle.net/10356/84966 http://hdl.handle.net/10220/42063 |
| _version_ | 1824454582141452288 |
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| author | Shih, Kailing Pitchappa, Prakash Manjappa, Manukumara Ho, Chong Pei Singh, Ranjan Lee, Chengkuo |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Shih, Kailing Pitchappa, Prakash Manjappa, Manukumara Ho, Chong Pei Singh, Ranjan Lee, Chengkuo |
| author_sort | Shih, Kailing |
| collection | NTU |
| description | We experimentally demonstrate the integration of a microfluidic trap array on top of metamaterial resonators for size selective trapping and remote sensing of microparticles. A split-ring resonator (SRR) design supports strongly confined electric field in the capacitive split gap at the fundamental inductive-capacitive resonance mode. The tightly confined electric field in the SRR gap forms a hot-spot that has become an enabling platform for sensing applications. Here, we extend the concept of metamaterial sensing to “trapping and sensing” by fabricating trapezoidal shaped structures near the split gap that enables trapping of microparticles in the split-gap region of each SRR. The proposed microfluidic metamaterial sensor enables sensing of different refractive index microparticles in terms of change in the transmitted amplitude and resonance frequency of the fundamental resonance mode operating in the terahertz spectral region. The proposed approach exploits the advantages offered by microfluidics, metamaterials, and terahertz technologies to form an ideal platform for ultra-sensitive, label-free, remote, and non-destructive detection of micro-substances. |
| first_indexed | 2025-02-19T03:24:36Z |
| format | Journal Article |
| id | ntu-10356/84966 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:24:36Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/849662023-02-28T19:22:15Z Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles Shih, Kailing Pitchappa, Prakash Manjappa, Manukumara Ho, Chong Pei Singh, Ranjan Lee, Chengkuo School of Physical and Mathematical Sciences Center for Disruptive Photonic Technologies Electric fields Metamaterials We experimentally demonstrate the integration of a microfluidic trap array on top of metamaterial resonators for size selective trapping and remote sensing of microparticles. A split-ring resonator (SRR) design supports strongly confined electric field in the capacitive split gap at the fundamental inductive-capacitive resonance mode. The tightly confined electric field in the SRR gap forms a hot-spot that has become an enabling platform for sensing applications. Here, we extend the concept of metamaterial sensing to “trapping and sensing” by fabricating trapezoidal shaped structures near the split gap that enables trapping of microparticles in the split-gap region of each SRR. The proposed microfluidic metamaterial sensor enables sensing of different refractive index microparticles in terms of change in the transmitted amplitude and resonance frequency of the fundamental resonance mode operating in the terahertz spectral region. The proposed approach exploits the advantages offered by microfluidics, metamaterials, and terahertz technologies to form an ideal platform for ultra-sensitive, label-free, remote, and non-destructive detection of micro-substances. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Published version 2017-01-26T04:52:36Z 2019-12-06T15:54:32Z 2017-01-26T04:52:36Z 2019-12-06T15:54:32Z 2017 Journal Article Shih, K., Pitchappa, P., Manjappa, M., Ho, C. P., Singh, R., & Lee, C. (2017). Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles. Journal of Applied Physics, 121(2), 023102-. 0021-8979 https://hdl.handle.net/10356/84966 http://hdl.handle.net/10220/42063 10.1063/1.4973492 en Journal of Applied Physics © 2017 AIP Publishing. This paper was published in Journal of Applied Physics and is made available as an electronic reprint (preprint) with permission of AIP Publishing. The published version is available at: [http://dx.doi.org/10.1063/1.4973492]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 6 p. application/pdf |
| spellingShingle | Electric fields Metamaterials Shih, Kailing Pitchappa, Prakash Manjappa, Manukumara Ho, Chong Pei Singh, Ranjan Lee, Chengkuo Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles |
| title | Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles |
| title_full | Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles |
| title_fullStr | Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles |
| title_full_unstemmed | Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles |
| title_short | Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles |
| title_sort | microfluidic metamaterial sensor selective trapping and remote sensing of microparticles |
| topic | Electric fields Metamaterials |
| url | https://hdl.handle.net/10356/84966 http://hdl.handle.net/10220/42063 |
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