Terahertz metasurfaces to demonstrate an extremely wide range of refractive indices in the 0.3-THz band
Metasurfaces suitable for the terahertz gap are alternatives to naturally occurring materials and could accelerate the development of terahertz flat optics integrated with terahertz continuous-wave sources. However, metasurfaces have yet to be commonly adopted in terahertz devices that require a num...
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| Veröffentlicht in: | Applied physics. A, Materials science & processing Materials science & processing, 2024-06, Vol.130 (6), Article 428 |
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| container_title | Applied physics. A, Materials science & processing |
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| creator | Sato, Kento Watai, Kazuhisa Ishihara, Koki Ohuchi, Ryuji Kondoh, Satoshi Sato, Tatsuya Suzuki, Takehito |
| description | Metasurfaces suitable for the terahertz gap are alternatives to naturally occurring materials and could accelerate the development of terahertz flat optics integrated with terahertz continuous-wave sources. However, metasurfaces have yet to be commonly adopted in terahertz devices that require a number of specific material properties because of the many choices in meta-atom design. In this paper, we demonstrate that simple dimension control of a single kind of meta-atom enables the design of a wide range of refractive indices from large positive to negative values in the 0.3-THz band. Measurements by terahertz time-domain spectroscopy verify three kinds of metasurfaces with (1) an extremely high refractive index of 12.3 +
j
0.88 and reflectance of 5.1% at 0.31 THz, (2) a zero refractive index of − 0.44 +
j
0.12 and reflectance of 2.6% at 0.34 THz, and (3) a negative refractive index of − 5.4 +
j
0.32 and reflectance of 22.7% at 0.31 THz. The 0.3-THz band is a frequency band for candidates to 6G wireless communications. Our results offer an accessible material platform for terahertz flat optics such as metalenses, antennas, and phase plates. Terahertz flat optics based on our presented metasurfaces would be a welcome contribution to the development of terahertz industries, including 6G wireless communications. |
| doi_str_mv | 10.1007/s00339-024-07589-2 |
| format | Article |
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j
0.88 and reflectance of 5.1% at 0.31 THz, (2) a zero refractive index of − 0.44 +
j
0.12 and reflectance of 2.6% at 0.34 THz, and (3) a negative refractive index of − 5.4 +
j
0.32 and reflectance of 22.7% at 0.31 THz. The 0.3-THz band is a frequency band for candidates to 6G wireless communications. Our results offer an accessible material platform for terahertz flat optics such as metalenses, antennas, and phase plates. Terahertz flat optics based on our presented metasurfaces would be a welcome contribution to the development of terahertz industries, including 6G wireless communications.</description><identifier>ISSN: 0947-8396</identifier><identifier>EISSN: 1432-0630</identifier><identifier>DOI: 10.1007/s00339-024-07589-2</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>6G mobile communication ; Characterization and Evaluation of Materials ; Condensed Matter Physics ; Continuous radiation ; Machines ; Manufacturing ; Material properties ; Metasurfaces ; Nanotechnology ; Optical and Electronic Materials ; Phase plates ; Physics ; Physics and Astronomy ; Processes ; Reflectance ; Refractivity ; Surfaces and Interfaces ; Terahertz frequencies ; Thin Films ; Wireless communications</subject><ispartof>Applied physics. A, Materials science & processing, 2024-06, Vol.130 (6), Article 428</ispartof><rights>The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c270t-6e78b869f80466d2e636662ff2630bfaeb9bc7f8f01c4997fd70692dc5e6cacf3</cites><orcidid>0000-0003-1318-9044</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00339-024-07589-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00339-024-07589-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Sato, Kento</creatorcontrib><creatorcontrib>Watai, Kazuhisa</creatorcontrib><creatorcontrib>Ishihara, Koki</creatorcontrib><creatorcontrib>Ohuchi, Ryuji</creatorcontrib><creatorcontrib>Kondoh, Satoshi</creatorcontrib><creatorcontrib>Sato, Tatsuya</creatorcontrib><creatorcontrib>Suzuki, Takehito</creatorcontrib><title>Terahertz metasurfaces to demonstrate an extremely wide range of refractive indices in the 0.3-THz band</title><title>Applied physics. A, Materials science & processing</title><addtitle>Appl. Phys. A</addtitle><description>Metasurfaces suitable for the terahertz gap are alternatives to naturally occurring materials and could accelerate the development of terahertz flat optics integrated with terahertz continuous-wave sources. However, metasurfaces have yet to be commonly adopted in terahertz devices that require a number of specific material properties because of the many choices in meta-atom design. In this paper, we demonstrate that simple dimension control of a single kind of meta-atom enables the design of a wide range of refractive indices from large positive to negative values in the 0.3-THz band. Measurements by terahertz time-domain spectroscopy verify three kinds of metasurfaces with (1) an extremely high refractive index of 12.3 +
j
0.88 and reflectance of 5.1% at 0.31 THz, (2) a zero refractive index of − 0.44 +
j
0.12 and reflectance of 2.6% at 0.34 THz, and (3) a negative refractive index of − 5.4 +
j
0.32 and reflectance of 22.7% at 0.31 THz. The 0.3-THz band is a frequency band for candidates to 6G wireless communications. Our results offer an accessible material platform for terahertz flat optics such as metalenses, antennas, and phase plates. Terahertz flat optics based on our presented metasurfaces would be a welcome contribution to the development of terahertz industries, including 6G wireless communications.</description><subject>6G mobile communication</subject><subject>Characterization and Evaluation of Materials</subject><subject>Condensed Matter Physics</subject><subject>Continuous radiation</subject><subject>Machines</subject><subject>Manufacturing</subject><subject>Material properties</subject><subject>Metasurfaces</subject><subject>Nanotechnology</subject><subject>Optical and Electronic Materials</subject><subject>Phase plates</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Processes</subject><subject>Reflectance</subject><subject>Refractivity</subject><subject>Surfaces and Interfaces</subject><subject>Terahertz frequencies</subject><subject>Thin Films</subject><subject>Wireless communications</subject><issn>0947-8396</issn><issn>1432-0630</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNp9kMFOAjEQhhujiYi-gKcmnouz7dJuj4aomJB4wXPT7U5hCexiW1R4eouYeHMuc_m_mfwfIbcFjAoAdR8BhNAMeMlAjSvN-BkZFKXgDKSAczIAXSpWCS0vyVWMK8hTcj4gizkGu8SQDnSDycZd8NZhpKmnDW76LqZgE1LbUfxKATe43tPPtkEabLdA2nsa0AfrUvuBtO2a9gi3HU1LpDASbD490Np2zTW58HYd8eZ3D8nb0-N8MmWz1-eXycOMOa4gMYmqqiupfQWllA1HKaSU3Huea9TeYq1rp3zloXCl1so3CqTmjRujdNZ5MSR3p7vb0L_vMCaz6nehyy-NgLFSSqiqyil-SrnQx5gbmG1oNzbsTQHmKNSchJos1PwINTxD4gTFHM7lw9_pf6hvZud5bw</recordid><startdate>20240601</startdate><enddate>20240601</enddate><creator>Sato, Kento</creator><creator>Watai, Kazuhisa</creator><creator>Ishihara, Koki</creator><creator>Ohuchi, Ryuji</creator><creator>Kondoh, Satoshi</creator><creator>Sato, Tatsuya</creator><creator>Suzuki, Takehito</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0003-1318-9044</orcidid></search><sort><creationdate>20240601</creationdate><title>Terahertz metasurfaces to demonstrate an extremely wide range of refractive indices in the 0.3-THz band</title><author>Sato, Kento ; Watai, Kazuhisa ; Ishihara, Koki ; Ohuchi, Ryuji ; Kondoh, Satoshi ; Sato, Tatsuya ; Suzuki, Takehito</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c270t-6e78b869f80466d2e636662ff2630bfaeb9bc7f8f01c4997fd70692dc5e6cacf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>6G mobile communication</topic><topic>Characterization and Evaluation of Materials</topic><topic>Condensed Matter Physics</topic><topic>Continuous radiation</topic><topic>Machines</topic><topic>Manufacturing</topic><topic>Material properties</topic><topic>Metasurfaces</topic><topic>Nanotechnology</topic><topic>Optical and Electronic Materials</topic><topic>Phase plates</topic><topic>Physics</topic><topic>Physics and Astronomy</topic><topic>Processes</topic><topic>Reflectance</topic><topic>Refractivity</topic><topic>Surfaces and Interfaces</topic><topic>Terahertz frequencies</topic><topic>Thin Films</topic><topic>Wireless communications</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sato, Kento</creatorcontrib><creatorcontrib>Watai, Kazuhisa</creatorcontrib><creatorcontrib>Ishihara, Koki</creatorcontrib><creatorcontrib>Ohuchi, Ryuji</creatorcontrib><creatorcontrib>Kondoh, Satoshi</creatorcontrib><creatorcontrib>Sato, Tatsuya</creatorcontrib><creatorcontrib>Suzuki, Takehito</creatorcontrib><collection>CrossRef</collection><jtitle>Applied physics. A, Materials science & processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sato, Kento</au><au>Watai, Kazuhisa</au><au>Ishihara, Koki</au><au>Ohuchi, Ryuji</au><au>Kondoh, Satoshi</au><au>Sato, Tatsuya</au><au>Suzuki, Takehito</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Terahertz metasurfaces to demonstrate an extremely wide range of refractive indices in the 0.3-THz band</atitle><jtitle>Applied physics. A, Materials science & processing</jtitle><stitle>Appl. Phys. A</stitle><date>2024-06-01</date><risdate>2024</risdate><volume>130</volume><issue>6</issue><artnum>428</artnum><issn>0947-8396</issn><eissn>1432-0630</eissn><abstract>Metasurfaces suitable for the terahertz gap are alternatives to naturally occurring materials and could accelerate the development of terahertz flat optics integrated with terahertz continuous-wave sources. However, metasurfaces have yet to be commonly adopted in terahertz devices that require a number of specific material properties because of the many choices in meta-atom design. In this paper, we demonstrate that simple dimension control of a single kind of meta-atom enables the design of a wide range of refractive indices from large positive to negative values in the 0.3-THz band. Measurements by terahertz time-domain spectroscopy verify three kinds of metasurfaces with (1) an extremely high refractive index of 12.3 +
j
0.88 and reflectance of 5.1% at 0.31 THz, (2) a zero refractive index of − 0.44 +
j
0.12 and reflectance of 2.6% at 0.34 THz, and (3) a negative refractive index of − 5.4 +
j
0.32 and reflectance of 22.7% at 0.31 THz. The 0.3-THz band is a frequency band for candidates to 6G wireless communications. Our results offer an accessible material platform for terahertz flat optics such as metalenses, antennas, and phase plates. Terahertz flat optics based on our presented metasurfaces would be a welcome contribution to the development of terahertz industries, including 6G wireless communications.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><doi>10.1007/s00339-024-07589-2</doi><orcidid>https://orcid.org/0000-0003-1318-9044</orcidid></addata></record> |
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| subjects | 6G mobile communication Characterization and Evaluation of Materials Condensed Matter Physics Continuous radiation Machines Manufacturing Material properties Metasurfaces Nanotechnology Optical and Electronic Materials Phase plates Physics Physics and Astronomy Processes Reflectance Refractivity Surfaces and Interfaces Terahertz frequencies Thin Films Wireless communications |
| title | Terahertz metasurfaces to demonstrate an extremely wide range of refractive indices in the 0.3-THz band |
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