Subdermal solar energy harvesting – A new way to power autonomous electric implants

Tholl, M. V.; Akarçay, H. G.; Tanner, H.; Niederhauser, T.; Zurbuchen, A.; Frenz, M.; Haeberlin, A. (2020). Subdermal solar energy harvesting – A new way to power autonomous electric implants. Applied energy, 269, p. 114948. Elsevier 10.1016/j.apenergy.2020.114948

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Subdermal solar harvesting has the potential to obviate the need for the periodic battery replacements as required in patients with cardiac pacemakers. The achievable power output of the subdermal solar module depends on implantation depth, optical skin properties and to an important part on solar cell characteristics. Monte Carlo simulations of light distribution in human skin were used to estimate the power output of subdermal solar cells under midday sunlight exposure in geographical mid-latitudes as a function of implantation depth and solar panel size. For the darkest skin type, the daily energy demand of a modern cardiac pacemaker (0.864 J at a power demand of 10 uW) can be provided by a 2 cm2 solar cell implanted subdermally at a depth of 3 mm when exposed to just 11 min of midday, clear sky irradiance. Our study reveals that solar harvesting with relatively small solar cells if optimized for the spectral subdermal fluence has the potential to power cardiac pacemakers in all skin types within reasonable irradiation exposure times. Solar energy harvesting is very promising to power electronic implants.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Musculoskeletal Biomechanics
04 Faculty of Medicine > Faculty Institutions > sitem Center for Translational Medicine and Biomedical Entrepreneurship
04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Cardiology
08 Faculty of Science > Institute of Applied Physics
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Cardiovascular Engineering (CVE)

Graduate School:

Graduate School for Cellular and Biomedical Sciences (GCB)

UniBE Contributor:

Tholl, Maximilien Victor; Akarçay, Hidayet Günhan; Tanner, Hildegard; Zurbuchen, Adrian; Frenz, Martin and Häberlin, Andreas David Heinrich

Subjects:

600 Technology > 610 Medicine & health
600 Technology > 620 Engineering

ISSN:

0306-2619

Publisher:

Elsevier

Funders:

Organisations 1051 not found.

Language:

English

Submitter:

Maximilien Victor Tholl

Date Deposited:

11 Mar 2021 14:23

Last Modified:

14 Mar 2021 02:47

Publisher DOI:

10.1016/j.apenergy.2020.114948

BORIS DOI:

10.48350/144680

URI:

https://boris.unibe.ch/id/eprint/144680

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