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3D Printed “Earable” Smart Devices for Real-Time Detection of Core Body Temperature

Ota, Hiroki and Chao, Minghan and Gao, Yuji and Wu, Eric and Tai, Li-Chia and Chen, Kevin and Matsuoka, Yasutomo and Iwai, Kosuke and Fahad, Hossain M. and Gao, Wei and Nyein, Hnin Yin Yin and Lin, Liwei and Javey, Ali (2017) 3D Printed “Earable” Smart Devices for Real-Time Detection of Core Body Temperature. ACS Sensors, 2 (7). pp. 990-997. ISSN 2379-3694. doi:10.1021/acssensors.7b00247.

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Real-time detection of basic physiological parameters such as blood pressure and heart rate is an important target in wearable smart devices for healthcare. Among these, the core body temperature is one of the most important basic medical indicators of fever, insomnia, fatigue, metabolic functionality, and depression. However, traditional wearable temperature sensors are based upon the measurement of skin temperature, which can vary dramatically from the true core body temperature. Here, we demonstrate a three-dimensional (3D) printed wearable “earable” smart device that is designed to be worn on the ear to track core body temperature from the tympanic membrane (i.e., ear drum) based on an infrared sensor. The device is fully integrated with data processing circuits and a wireless module for standalone functionality. Using this smart earable device, we demonstrate that the core body temperature can be accurately monitored regardless of the environment and activity of the user. In addition, a microphone and actuator are also integrated so that the device can also function as a bone conduction hearing aid. Using 3D printing as the fabrication method enables the device to be customized for the wearer for more personalized healthcare. This smart device provides an important advance in realizing personalized health care by enabling real-time monitoring of one of the most important medical parameters, core body temperature, employed in preliminary medical screening tests.

Item Type:Article
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URLURL TypeDescription ItemSupporting Information
Chen, Kevin0000-0002-6726-6132
Gao, Wei0000-0002-8503-4562
Javey, Ali0000-0001-7214-7931
Additional Information:© 2017 American Chemical Society. This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. Received 13 April 2017. Date accepted 21 June 2017. Published online 19 July 2017. Published in print 28 July 2017. This work was supported by the NSF NASCENT Center. Y. G. acknowledges support from the China Scholarship Council (File No. 201406250097). K. C. acknowledges support from the Robert N. Noyce Fellowship in Microelectronics.
Funding AgencyGrant Number
China Scholarship Council201406250097
Robert N. Noyce FellowshipUNSPECIFIED
Issue or Number:7
Record Number:CaltechAUTHORS:20170920-143842334
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Official Citation:3D Printed “Earable” Smart Devices for Real-Time Detection of Core Body Temperature Hiroki Ota, Minghan Chao, Yuji Gao, Eric Wu, Li-Chia Tai, Kevin Chen, Yasutomo Matsuoka, Kosuke Iwai, Hossain M. Fahad, Wei Gao, Hnin Yin Yin Nyein, Liwei Lin, and Ali Javey ACS Sensors 2017 2 (7), 990-997 DOI: 10.1021/acssensors.7b00247
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:81635
Deposited By: Ruth Sustaita
Deposited On:20 Sep 2017 22:23
Last Modified:15 Nov 2021 19:44

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