Biomedical electronics powered by solar cells

Wangatia, Lodrick Makokha; Yang, Shengrong; Zabihi, Fatemeh; Zhu, Meifang; Ramakrishna, Seeram

doi:10.1016/j.cobme.2019.08.004

Cited by 24 publications

(23 citation statements)

References 23 publications

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“…The renewable energy harvesting methods explored to power various devices on the wearables include: solar cells, [ 10–12 ] piezoelectric nanogenerators, [ 14,15 ] triboelectric nanogenerators (TENG), [ 14,17 ] and thermoelectric generators, [ 20 ] etc. The ambient or the body's kinetic energy harvested with these methods is used for the powering of sensors and associated electronics.…”

Section: Key Components Of Energy‐autonomous Wearable Systemsmentioning

confidence: 99%

“…Wearable systems incorporating physical, chemical, and biological sensors and actuators have rapidly become an inseparable part of our lives for their use in a wide range of applications, such as personalized health monitoring, wellness‐tracking, early‐warning for COVID‐19, exoskeletons, prosthetics, and interactive systems for augmented/virtual reality. [ 1–9 ] The continuous operation of these systems is juxtaposed with the reliable and sustainable energy sources, currently met through: a) energy harvesters based on mechanisms such as photovoltaics, [ 10–13 ] piezoelectricity, [ 14–16 ] triboelectricity, [ 14,17–19 ] and theremoelectricity, [ 20–22 ] etc. ; b) energy storage devices such as Li‐ion batteries (LiB) [ 23–27 ] and supercapacitors (SCs), [ 28–35 ] etc.…”

Section: Introductionmentioning

confidence: 99%

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Energy Autonomous Sweat‐Based Wearable Systems

et al. 2021

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The continuous operation of wearable electronics demands reliable sources of energy, currently met through Li‐ion batteries and various energy harvesters. These solutions are being used out of necessity despite potential safety issues and unsustainable environmental impact. Safe and sustainable energy sources can boost the use of wearables systems in diverse applications such as health monitoring, prosthetics, and sports. In this regard, sweat‐ and sweat‐equivalent‐based studies have attracted tremendous attention through the demonstration of energy‐generating biofuel cells, promising power densities as high as 3.5 mW cm−2, storage using sweat‐electrolyte‐based supercapacitors with energy and power densities of 1.36 Wh kg−1 and 329.70 W kg−1, respectively, and sweat‐activated batteries with an impressive energy density of 67 Ah kg−1. A combination of these energy generating, and storage devices can lead to fully energy‐autonomous wearables capable of providing sustainable power in the µW to mW range, which is sufficient to operate both sensing and communication devices. Here, a comprehensive review covering these advances, addressing future challenges and potential solutions related to fully energy‐autonomous wearables is presented, with emphasis on sweat‐based energy storage and energy generation elements along with sweat‐based sensors as applications.

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Section: Key Components Of Energy‐autonomous Wearable Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy Autonomous Sweat‐Based Wearable Systems

et al. 2021

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“…Typically, inorganic photovoltaics (PV) have been explored for in vivo powering of devices due to their high power conversion efficiencies. 6 However, inorganic PVs are usually at least a few µm thick, because of their low absorption coefficient. On the contrary, organic semiconductors offer high absorption coefficients, making devices on the order of 100-200 nm possible.…”

Section: Implantable Electronicsmentioning

confidence: 99%

Wireless Bioelectronic Devices Driven by Deep Red Light

Jakešová

2021

Linköping Studies in Science and Technology. Dissertations

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“…Recently, flexible lithium-ion battery has been integrated with a fabric-based TENG to form wearable electronics (Pu et al, 2015). Solar energy has also been integrated with TENGs for the development of flexible self-charged devices (Ma et al, 2019b), and solar-based flexible electrodes for e-skins (Wangatia et al, 2020) can be implemented on soft machines, such as biomedical robots. A solar cell can be also combined with flexible batteries to provide a compact continuous power solution for soft actuators and robots (Wehner et al, 2014).…”

Section: Teng-based Self-powered Sensorsmentioning

confidence: 99%

Triboelectric and Piezoelectric Nanogenerators for Future Soft Robots and Machines

et al. 2020

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The triboelectric nanogenerator (TENG) and piezoelectric nanogenerator (PENG) are two recently developed technologies for effective harvesting of ambient mechanical energy for the creation of self-powered systems. The advantages of TENGs and PENGs which include large open-circuit output voltage, low cost, ease of fabrication, and high conversion efficiency enable their application as new flexible sensors, wearable devices, soft robotics, and machines. This perspective provides an overview of the current state of the art in triboelectric and piezoelectric devices that are used as self-powered sensors and energy harvesters for soft robots and machines; hybrid approaches that combine the advantages of both mechanisms are also discussed. To improve system performance and efficiency, the potential of providing self-powered soft systems with a degree of multifunctionality is investigated. This includes optical sensing, transparency, self-healing, water resistance, photo-luminescence, or an ability to operate in hostile environments such as low temperature, high humidity, or high strain/stretch. Finally, areas for future research directions are identified.

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Biomedical electronics powered by solar cells

Cited by 24 publications

References 23 publications

Energy Autonomous Sweat‐Based Wearable Systems

Energy Autonomous Sweat‐Based Wearable Systems

Wireless Bioelectronic Devices Driven by Deep Red Light

Triboelectric and Piezoelectric Nanogenerators for Future Soft Robots and Machines

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