Porous Low‐Loss Silica–PMMA Dielectric Nanocomposite for High‐Frequency Bullet Lens Applications
Several devices of the future generation wireless telecommunication technologies that use bands in THz frequencies for data transmission need low‐loss and low‐permittivity materials to enable ideal conditions for the propagation of electromagnetic waves. Herein, a lightweight dielectric bullet‐shape...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-03-01
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| Series: | Advanced Photonics Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/adpr.202200208 |
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| author | Petra S. Palvölgyi Mikko Kokkonen Rafal Sliz Heli Jantunen Krisztian Kordas Sami Myllymäki |
| author_facet | Petra S. Palvölgyi Mikko Kokkonen Rafal Sliz Heli Jantunen Krisztian Kordas Sami Myllymäki |
| author_sort | Petra S. Palvölgyi |
| collection | DOAJ |
| description | Several devices of the future generation wireless telecommunication technologies that use bands in THz frequencies for data transmission need low‐loss and low‐permittivity materials to enable ideal conditions for the propagation of electromagnetic waves. Herein, a lightweight dielectric bullet‐shaped lens operating in the frequency range of 110–170 GHz is demonstrated to collimate electromagnetic waves, thus increasing the intensity of the electric field. The material of the lens is based on a composite of silica nanoshells and poly(methylmethacrylate) made by the impregnation of the nanoshells with the polymer followed by hot pressing in a mold. As the polymer acts only as an adhesive between the hollow nanospheres without filling the inner cavity of the shells and their interparticle spaces, the composite is highly porous (67%) and has low dielectric permittivity and loss tangent (1.5 and 4 × 10−3, respectively, below 200 GHz). The size of the collimated beam and the increase of the corresponding field strength are measured to vary from 2.2 to 1.2 mm and from 17.2 to 8.98 dB depending on the frequency of the waves (110–170 GHz). |
| first_indexed | 2024-04-10T06:03:59Z |
| format | Article |
| id | doaj.art-7c7146a9d53c42708d881bdbd6283ced |
| institution | Directory Open Access Journal |
| issn | 2699-9293 |
| language | English |
| last_indexed | 2024-04-10T06:03:59Z |
| publishDate | 2023-03-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj.art-7c7146a9d53c42708d881bdbd6283ced2023-03-03T05:17:27ZengWiley-VCHAdvanced Photonics Research2699-92932023-03-0143n/an/a10.1002/adpr.202200208Porous Low‐Loss Silica–PMMA Dielectric Nanocomposite for High‐Frequency Bullet Lens ApplicationsPetra S. Palvölgyi0Mikko Kokkonen1Rafal Sliz2Heli Jantunen3Krisztian Kordas4Sami Myllymäki5Microelectronics Research Unit Faculty of Information and Electrical Engineering University of Oulu P. O. Box 4500 FI-90570 Oulu FinlandMicroelectronics Research Unit Faculty of Information and Electrical Engineering University of Oulu P. O. Box 4500 FI-90570 Oulu FinlandOptoelectronics and Measurement Techniques Unit Faculty of Information Technology and Electrical Engineering University of Oulu P.O. Box 4500 FI-90014 Oulu FinlandMicroelectronics Research Unit Faculty of Information and Electrical Engineering University of Oulu P. O. Box 4500 FI-90570 Oulu FinlandMicroelectronics Research Unit Faculty of Information and Electrical Engineering University of Oulu P. O. Box 4500 FI-90570 Oulu FinlandMicroelectronics Research Unit Faculty of Information and Electrical Engineering University of Oulu P. O. Box 4500 FI-90570 Oulu FinlandSeveral devices of the future generation wireless telecommunication technologies that use bands in THz frequencies for data transmission need low‐loss and low‐permittivity materials to enable ideal conditions for the propagation of electromagnetic waves. Herein, a lightweight dielectric bullet‐shaped lens operating in the frequency range of 110–170 GHz is demonstrated to collimate electromagnetic waves, thus increasing the intensity of the electric field. The material of the lens is based on a composite of silica nanoshells and poly(methylmethacrylate) made by the impregnation of the nanoshells with the polymer followed by hot pressing in a mold. As the polymer acts only as an adhesive between the hollow nanospheres without filling the inner cavity of the shells and their interparticle spaces, the composite is highly porous (67%) and has low dielectric permittivity and loss tangent (1.5 and 4 × 10−3, respectively, below 200 GHz). The size of the collimated beam and the increase of the corresponding field strength are measured to vary from 2.2 to 1.2 mm and from 17.2 to 8.98 dB depending on the frequency of the waves (110–170 GHz).https://doi.org/10.1002/adpr.2022002086G applicationslow-loss dielectricslow-permittivity materialsporous nanocompositestemplated sol–gel synthesis |
| spellingShingle | Petra S. Palvölgyi Mikko Kokkonen Rafal Sliz Heli Jantunen Krisztian Kordas Sami Myllymäki Porous Low‐Loss Silica–PMMA Dielectric Nanocomposite for High‐Frequency Bullet Lens Applications Advanced Photonics Research 6G applications low-loss dielectrics low-permittivity materials porous nanocomposites templated sol–gel synthesis |
| title | Porous Low‐Loss Silica–PMMA Dielectric Nanocomposite for High‐Frequency Bullet Lens Applications |
| title_full | Porous Low‐Loss Silica–PMMA Dielectric Nanocomposite for High‐Frequency Bullet Lens Applications |
| title_fullStr | Porous Low‐Loss Silica–PMMA Dielectric Nanocomposite for High‐Frequency Bullet Lens Applications |
| title_full_unstemmed | Porous Low‐Loss Silica–PMMA Dielectric Nanocomposite for High‐Frequency Bullet Lens Applications |
| title_short | Porous Low‐Loss Silica–PMMA Dielectric Nanocomposite for High‐Frequency Bullet Lens Applications |
| title_sort | porous low loss silica pmma dielectric nanocomposite for high frequency bullet lens applications |
| topic | 6G applications low-loss dielectrics low-permittivity materials porous nanocomposites templated sol–gel synthesis |
| url | https://doi.org/10.1002/adpr.202200208 |
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