Optical bistability in shape-memory nanowire metamaterial array
Non-volatile temperature-induced structural phase transitions such as those found in chalcogenide glasses are known to lead to strong changes in optical properties and are widely used in rewritable optical disk technology. Herein, we demonstrate that thermally activated optical memory can be achieve...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Online Access: | https://hdl.handle.net/10356/83055 http://hdl.handle.net/10220/47567 |
| _version_ | 1811694680438472704 |
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| author | Nagasaki, Yusuke Gholipour, Behrad Ou, Jun-Yu Tsuruta, Masanori Plum, Eric MacDonald, Kevin F. Takahara, Junichi Zheludev, Nikolay I. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Nagasaki, Yusuke Gholipour, Behrad Ou, Jun-Yu Tsuruta, Masanori Plum, Eric MacDonald, Kevin F. Takahara, Junichi Zheludev, Nikolay I. |
| author_sort | Nagasaki, Yusuke |
| collection | NTU |
| description | Non-volatile temperature-induced structural phase transitions such as those found in chalcogenide glasses are known to lead to strong changes in optical properties and are widely used in rewritable optical disk technology. Herein, we demonstrate that thermally activated optical memory can be achieved via the nanostructural reconfiguration of a metallic nanowire metamaterial array made from a shape-memory alloy: A nickel-titanium film of nanoscale thickness structured on the subwavelength scale exhibits bistability of its optical properties upon temperature cycling between 30 °C and 210 °C. The structure, comprising an array of NiTi nanowires coated with a thin film of gold to enhance its plasmonic properties, can exist in two non-volatile states presenting an optical reflectivity differential of 12% via nanoscale mutual displacements of alternating nanowires in the structure. Such all-metal shape-memory photonic gratings and metamaterials may find applications in bistable optical devices. |
| first_indexed | 2024-10-01T07:11:25Z |
| format | Journal Article |
| id | ntu-10356/83055 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:11:25Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/830552023-02-28T19:31:48Z Optical bistability in shape-memory nanowire metamaterial array Nagasaki, Yusuke Gholipour, Behrad Ou, Jun-Yu Tsuruta, Masanori Plum, Eric MacDonald, Kevin F. Takahara, Junichi Zheludev, Nikolay I. School of Physical and Mathematical Sciences Centre for Disruptive Photonic Technologies (CDPT) The Photonics Institute DRNTU::Science::Physics Optical Bistability Nanowires Non-volatile temperature-induced structural phase transitions such as those found in chalcogenide glasses are known to lead to strong changes in optical properties and are widely used in rewritable optical disk technology. Herein, we demonstrate that thermally activated optical memory can be achieved via the nanostructural reconfiguration of a metallic nanowire metamaterial array made from a shape-memory alloy: A nickel-titanium film of nanoscale thickness structured on the subwavelength scale exhibits bistability of its optical properties upon temperature cycling between 30 °C and 210 °C. The structure, comprising an array of NiTi nanowires coated with a thin film of gold to enhance its plasmonic properties, can exist in two non-volatile states presenting an optical reflectivity differential of 12% via nanoscale mutual displacements of alternating nanowires in the structure. Such all-metal shape-memory photonic gratings and metamaterials may find applications in bistable optical devices. MOE (Min. of Education, S’pore) Published version 2019-01-28T04:33:14Z 2019-12-06T15:10:58Z 2019-01-28T04:33:14Z 2019-12-06T15:10:58Z 2018 Journal Article Nagasaki, Y., Gholipour, B., Ou, J.-Y., Tsuruta, M., Plum, E., MacDonald, K. F., . . . Zheludev, N. I. (2018). Optical bistability in shape-memory nanowire metamaterial array. Applied Physics Letters, 113(2), 021105-. doi:10.1063/1.5025400 0003-6951 https://hdl.handle.net/10356/83055 http://hdl.handle.net/10220/47567 10.1063/1.5025400 en Applied Physics Letters © 2018 The Author(s). All rights reserved. This paper was published by AIP Publishing in Applied Physics Letters and is made available with permission of The Author(s). 4 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics Optical Bistability Nanowires Nagasaki, Yusuke Gholipour, Behrad Ou, Jun-Yu Tsuruta, Masanori Plum, Eric MacDonald, Kevin F. Takahara, Junichi Zheludev, Nikolay I. Optical bistability in shape-memory nanowire metamaterial array |
| title | Optical bistability in shape-memory nanowire metamaterial array |
| title_full | Optical bistability in shape-memory nanowire metamaterial array |
| title_fullStr | Optical bistability in shape-memory nanowire metamaterial array |
| title_full_unstemmed | Optical bistability in shape-memory nanowire metamaterial array |
| title_short | Optical bistability in shape-memory nanowire metamaterial array |
| title_sort | optical bistability in shape memory nanowire metamaterial array |
| topic | DRNTU::Science::Physics Optical Bistability Nanowires |
| url | https://hdl.handle.net/10356/83055 http://hdl.handle.net/10220/47567 |
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