Refractive Index Change of Cellulose Nanocrystal-Based Electroactive Polyurethane by an Electric Field
A tunable optical lens can tune or reconfigure the lens material itself such that it can eliminate the moving part of the lens, which brings broad technological impacts. Many tunable optical lenses have been implemented using electroactive polymers that can change the shape of the lens. However, the...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-01-01
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| Series: | Frontiers in Bioengineering and Biotechnology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fbioe.2021.606008/full |
| _version_ | 1818566376655159296 |
|---|---|
| author | Jaehwan Kim Hyun-U Ko Hyun Chan Kim |
| author_facet | Jaehwan Kim Hyun-U Ko Hyun Chan Kim |
| author_sort | Jaehwan Kim |
| collection | DOAJ |
| description | A tunable optical lens can tune or reconfigure the lens material itself such that it can eliminate the moving part of the lens, which brings broad technological impacts. Many tunable optical lenses have been implemented using electroactive polymers that can change the shape of the lens. However, the refractive index (RI) change of electroactive polymers has not been well investigated. This paper investigated the RI change of CNC-based transparent and electroactive polyurethane (CPPU) in the presence of an actuating electric field. The prepared CPPU was electrically poled to enhance its electro-optical performance, and the poling conditions in terms of frequency and electric field were optimized. The poled CPPU was characterized using a Fourier transform infrared spectroscopy and a refractometer. To investigate the RI change in the presence of an actuating electric field, the poled CPPU was constrained between two electrodes with a fixed distance. The RI linearly increased as the actuating electric field increased. The RI change mechanism and the optimized poling conditions are illustrated. The tunable RI is a promising property for implementing a tunable optical lens. |
| first_indexed | 2024-12-14T01:52:56Z |
| format | Article |
| id | doaj.art-ad3f3e34703f41e99a0ef10664fc8dfa |
| institution | Directory Open Access Journal |
| issn | 2296-4185 |
| language | English |
| last_indexed | 2024-12-14T01:52:56Z |
| publishDate | 2021-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Bioengineering and Biotechnology |
| spelling | doaj.art-ad3f3e34703f41e99a0ef10664fc8dfa2022-12-21T23:21:19ZengFrontiers Media S.A.Frontiers in Bioengineering and Biotechnology2296-41852021-01-01910.3389/fbioe.2021.606008606008Refractive Index Change of Cellulose Nanocrystal-Based Electroactive Polyurethane by an Electric FieldJaehwan KimHyun-U KoHyun Chan KimA tunable optical lens can tune or reconfigure the lens material itself such that it can eliminate the moving part of the lens, which brings broad technological impacts. Many tunable optical lenses have been implemented using electroactive polymers that can change the shape of the lens. However, the refractive index (RI) change of electroactive polymers has not been well investigated. This paper investigated the RI change of CNC-based transparent and electroactive polyurethane (CPPU) in the presence of an actuating electric field. The prepared CPPU was electrically poled to enhance its electro-optical performance, and the poling conditions in terms of frequency and electric field were optimized. The poled CPPU was characterized using a Fourier transform infrared spectroscopy and a refractometer. To investigate the RI change in the presence of an actuating electric field, the poled CPPU was constrained between two electrodes with a fixed distance. The RI linearly increased as the actuating electric field increased. The RI change mechanism and the optimized poling conditions are illustrated. The tunable RI is a promising property for implementing a tunable optical lens.https://www.frontiersin.org/articles/10.3389/fbioe.2021.606008/fullelectroactive polymer actuatorcellulose nanocrystaltunable lensrefractive indexpolyurethane |
| spellingShingle | Jaehwan Kim Hyun-U Ko Hyun Chan Kim Refractive Index Change of Cellulose Nanocrystal-Based Electroactive Polyurethane by an Electric Field Frontiers in Bioengineering and Biotechnology electroactive polymer actuator cellulose nanocrystal tunable lens refractive index polyurethane |
| title | Refractive Index Change of Cellulose Nanocrystal-Based Electroactive Polyurethane by an Electric Field |
| title_full | Refractive Index Change of Cellulose Nanocrystal-Based Electroactive Polyurethane by an Electric Field |
| title_fullStr | Refractive Index Change of Cellulose Nanocrystal-Based Electroactive Polyurethane by an Electric Field |
| title_full_unstemmed | Refractive Index Change of Cellulose Nanocrystal-Based Electroactive Polyurethane by an Electric Field |
| title_short | Refractive Index Change of Cellulose Nanocrystal-Based Electroactive Polyurethane by an Electric Field |
| title_sort | refractive index change of cellulose nanocrystal based electroactive polyurethane by an electric field |
| topic | electroactive polymer actuator cellulose nanocrystal tunable lens refractive index polyurethane |
| url | https://www.frontiersin.org/articles/10.3389/fbioe.2021.606008/full |
| work_keys_str_mv | AT jaehwankim refractiveindexchangeofcellulosenanocrystalbasedelectroactivepolyurethanebyanelectricfield AT hyunuko refractiveindexchangeofcellulosenanocrystalbasedelectroactivepolyurethanebyanelectricfield AT hyunchankim refractiveindexchangeofcellulosenanocrystalbasedelectroactivepolyurethanebyanelectricfield |