An electrochromic alarm system for smart contact lenses

Wearable devices are becoming essential tools for mandatory daily health checks. The technology permits the sounding of alarms in response to critical conditions and as part of a continuous, real-time smart healthcare system. Among wearable devices, the smart contact lens is a pivotal technology, as...

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Main Authors: Kim, Moobum, Jung, Im Doo, Kim, Yeongae, Yun, Jeonghun, Gao, Caitian, Lee, Hyun-Wook, Lee, Seok Woo
Other Authors: School of Electrical and Electronic Engineering
Format: Journal Article
Language:English
Published: 2022
Subjects:
Online Access:https://hdl.handle.net/10356/160977
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author Kim, Moobum
Jung, Im Doo
Kim, Yeongae
Yun, Jeonghun
Gao, Caitian
Lee, Hyun-Wook
Lee, Seok Woo
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Kim, Moobum
Jung, Im Doo
Kim, Yeongae
Yun, Jeonghun
Gao, Caitian
Lee, Hyun-Wook
Lee, Seok Woo
author_sort Kim, Moobum
collection NTU
description Wearable devices are becoming essential tools for mandatory daily health checks. The technology permits the sounding of alarms in response to critical conditions and as part of a continuous, real-time smart healthcare system. Among wearable devices, the smart contact lens is a pivotal technology, as it permits vital-sign monitoring through lachrymation and an augmented visual reality that can be used for the provision of information. Past research regarding smart contact lenses has relied on wireless communication for data transmission, which has necessitated the use of additional receivers. Furthermore, no research has thus far been published that deals with the provision of information through image visualization on the contact lens. Here, we describe an electrochromic alarm system that operates via electrochemical reactions with ions in tears and achieves data transmission and the provision of information. The system was shown to function in harsh conditions and with limited space and thickness. It was able to maintain contact with tears as a result of its curved shape. The voltage and duration of the potential applied to our electrochromic system were controlled in a way that achieved a broad range of color changes and frequencies. Furthermore, diverse patterns were demonstrated by controlling the duration of the applied voltage, and words were visualized via telecommunication with Morse code. We believe that the electrochromic alarm system reported here is able to be integrated into smart contact lens while extending the possibilities of data transmission and information provision for the users.
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spelling ntu-10356/1609772022-08-10T03:03:48Z An electrochromic alarm system for smart contact lenses Kim, Moobum Jung, Im Doo Kim, Yeongae Yun, Jeonghun Gao, Caitian Lee, Hyun-Wook Lee, Seok Woo School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Smart Contact Lens Wearable Wearable devices are becoming essential tools for mandatory daily health checks. The technology permits the sounding of alarms in response to critical conditions and as part of a continuous, real-time smart healthcare system. Among wearable devices, the smart contact lens is a pivotal technology, as it permits vital-sign monitoring through lachrymation and an augmented visual reality that can be used for the provision of information. Past research regarding smart contact lenses has relied on wireless communication for data transmission, which has necessitated the use of additional receivers. Furthermore, no research has thus far been published that deals with the provision of information through image visualization on the contact lens. Here, we describe an electrochromic alarm system that operates via electrochemical reactions with ions in tears and achieves data transmission and the provision of information. The system was shown to function in harsh conditions and with limited space and thickness. It was able to maintain contact with tears as a result of its curved shape. The voltage and duration of the potential applied to our electrochromic system were controlled in a way that achieved a broad range of color changes and frequencies. Furthermore, diverse patterns were demonstrated by controlling the duration of the applied voltage, and words were visualized via telecommunication with Morse code. We believe that the electrochromic alarm system reported here is able to be integrated into smart contact lens while extending the possibilities of data transmission and information provision for the users. Ministry of Education (MOE) S.W.L. acknowledges the support by Academic Research Fund Tier 1 from Ministry of Education, Singapore under ref. no. 2017-T1-002-096 (RG 182/17) and Academic Research Fund Tier 2 from Ministry of Education, Singapore under ref. no. 2018-T2-1-045. H.-W.L. acknowledges support from International Cooperation in S&T Program (NRF-2016K2A9A1A06934767) through the National Research Foundation of Korea funded by the Ministry of Science and ICT. 2022-08-10T03:03:48Z 2022-08-10T03:03:48Z 2020 Journal Article Kim, M., Jung, I. D., Kim, Y., Yun, J., Gao, C., Lee, H. & Lee, S. W. (2020). An electrochromic alarm system for smart contact lenses. Sensors and Actuators, B: Chemical, 322, 128601-. https://dx.doi.org/10.1016/j.snb.2020.128601 0925-4005 https://hdl.handle.net/10356/160977 10.1016/j.snb.2020.128601 2-s2.0-85088222057 322 128601 en 2017-T1-002-096 RG 182/17 2018-T2-1-045 Sensors and Actuators, B: Chemical © 2020 Elsevier B.V. All rights reserved.
spellingShingle Engineering::Electrical and electronic engineering
Smart Contact Lens
Wearable
Kim, Moobum
Jung, Im Doo
Kim, Yeongae
Yun, Jeonghun
Gao, Caitian
Lee, Hyun-Wook
Lee, Seok Woo
An electrochromic alarm system for smart contact lenses
title An electrochromic alarm system for smart contact lenses
title_full An electrochromic alarm system for smart contact lenses
title_fullStr An electrochromic alarm system for smart contact lenses
title_full_unstemmed An electrochromic alarm system for smart contact lenses
title_short An electrochromic alarm system for smart contact lenses
title_sort electrochromic alarm system for smart contact lenses
topic Engineering::Electrical and electronic engineering
Smart Contact Lens
Wearable
url https://hdl.handle.net/10356/160977
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