کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10141071 | 1646055 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Power supply for electronic contact lenses: Abiotic glucose fuel cells vs. Mg/air batteries
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Electronic contact lenses are a promising platform for medical sensors. With these devices a variety of vital signs and medical parameters can be monitored noninvasively and without the risk of foreign body response. However, one current limitation of this technology is the need for an external power supply, resulting in bulky, multi component devices. In this paper, we for the first time investigate and compare the application of abiotic glucose fuel cells and Mg/air batteries as alternative power supply technologies for electronic contact lenses. While abiotic glucose fuel cells harvest energy from metabolites present in tear fluid, Mg/air batteries provide electricity by the oxidation of a sacrificial anode. Considering the space available on standard contact lenses, our results indicate that approx. 40â¯Î¼W and 2â¯Î¼W can be generated by Mg/air batteries and glucose fuel cells for a period of at least 24â¯h, respectively. However, coating galvanic cells with the commonly used contact lens material pHEMA, results in drastically reduced performance, presumably due to hindered mass transport. Nevertheless, even under those circumstances a Mg/air battery can still provide about 7â¯Î¼W for 24â¯h, which would already be sufficient for many electronic contact lens applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 401, 15 October 2018, Pages 403-414
Journal: Journal of Power Sources - Volume 401, 15 October 2018, Pages 403-414
نویسندگان
Maxi Frei, Julian Martin, Steffen Kindler, Giorgio Cristiano, Roland Zengerle, Sven Kerzenmacher,