Subdermal Flexible Solar Cell Arrays for Powering Medical Electronic Implants

Song, Kwangsun; Han, Jung Yeol; Lim, Tae‐Hoon; Kim, Namyun; Shin, Sungho; Kim, Juho; Choo, Hyuck; Jeong, Sungho; Kim, Yong-Chul; Wang, Zhong Lin; Lee, Jongho

doi:10.1002/adhm.201600222

Cited by 128 publications

(126 citation statements)

References 60 publications

Supporting

Mentioning

125

Contrasting

Unclassified

Order By: Relevance

“…Thus, an alternative material with stable properties had to be implemented. Optical properties of human skin are documented well in literature, in vivo 18 and in vitro 1,9,14,16,17 data of human skin are presented, giving the wavelength-dependent absorption coefficient and transport scattering coefficient . However, reported data differs, especially in the near infrared range (NIR) 1.…”

Section: Methodsmentioning

confidence: 97%

Energy Harvesting by Subcutaneous Solar Cells: A Long-Term Study on Achievable Energy Output

et al. 2017

View full text Add to dashboard Cite

Active electronic implants are powered by primary batteries, which induces the necessity of implant replacement after battery depletion. This causes repeated interventions in a patients’ life, which bears the risk of complications and is costly. By using energy harvesting devices to power the implant, device replacements may be avoided and the device size may be reduced dramatically. Recently, several groups presented prototypes of implants powered by subcutaneous solar cells. However, data about the expected real-life power output of subcutaneously implanted solar cells was lacking so far. In this study, we report the first real-life validation data of energy harvesting by subcutaneous solar cells. Portable light measurement devices that feature solar cells (cell area = 3.6 cm2) and continuously measure a subcutaneous solar cell’s output power were built. The measurement devices were worn by volunteers in their daily routine in summer, autumn and winter. In addition to the measured output power, influences such as season, weather and human activity were analyzed. The obtained mean power over the whole study period was 67 µW (=19 µW cm−2), which is sufficient to power e.g. a cardiac pacemaker.

show abstract

Section: Methodsmentioning

confidence: 97%

Energy Harvesting by Subcutaneous Solar Cells: A Long-Term Study on Achievable Energy Output

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The implanted pacemaker can also be powered with a battery that is recharged by the IPV device when the light source is not available (Figure 20g, right). [151] Biodegradable energy management system have also drawn intensive attention in recent years for implantable applications. The devices can be degraded and resorbed in the body, so no operation is needed to remove them, and adverse long-term side effects are avoided.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

“…e-g) Reproduced with permission. [151] Copyright 2016, Wiley-VCH. h) Images of an implanted (left) and sutured (right) demonstration platform for transient electronics located in the subdermal dorsal region of a BALB/c mouse.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

“…[4b] Another implantable energy harvesting system based on flexible subdermal solar cell arrays was recently demonstrated. [151] This approach takes the advantage of the transparency or translucency of skin or tissues to power implantable devices by converting solar energy to electricity. The thin film flexible solar cell arrays were fabricated by sputtering metal interconnects to the array of ultrathin dual-junction solar microcells (GaInP/GaAs with thickness of 5.7 µm) that is transfer-printed on the flexi ble polyimide film.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

See 1 more Smart Citation

Toward Soft Skin‐Like Wearable and Implantable Energy Devices

Gong

Cheng

2017

Advanced Energy Materials

197

130

View full text Add to dashboard Cite

The development of ultra‐compliant power sources is crucial for their seamless integration with next‐generation skin‐like wearable and implantable biomedical systems for long‐term health monitoring. Toward this goal, stretchable energy storage and conversion devices (ESCDs), including supercapacitors, lithium‐ion batteries (LIBs), solar cells, and generators are now attracting intensive worldwide research efforts. The purpose of this review is to discuss the latest achievements in the development of such stretchable energy devices in the context of biomedical applications. We first review the viable strategies and methodologies of fabricating stretchable energy storage and conversion devices. Then, we focus on description of various types of soft energy devices from a materials point of view. Furthermore, we discuss the challenges and opportunities in the design of truly conformal soft energy systems, including various key parameters, such as energy density, stability, and scalability.

show abstract

“…Such cases would mandate researchers to combine wearable biofuel cells with other forms of energy harvesting platforms to supply constant power to electronic devices. [64][65][66] In addition to this, researchers would have to integrate energy storage systems, such as wearable supercapacitors, to store the power generated by various energy harvesting systems and then supply the desired power to energize electronics. Such integration of energy harvesting and storage techniques is crucial for real-life applications of wearable biofuel cells.…”

Section: Supplymentioning

confidence: 99%

Review—Wearable Biofuel Cells: Past, Present and Future

Bandodkar¹

2016

J. Electrochem. Soc.

View full text Add to dashboard Cite

The perspective article provides a detailed description of the major developments in the field of wearable biofuel cells. The article expounds several attributes of this newly emerging technology and its potential to address the energy needs of wearable devices. In addition to discussing important milestones reached in this field, the article also highlights the grand challenges that are presently hindering further development of wearable biofuel cells. Particular emphasis has been devoted to major issues related to biofuel cell stability, need for generating stable, high levels of power, mechanical compliance and resiliency and device aesthetics. In addition to this, the article also offers multiple pathways to address these issues. The article aims at generating interest among researchers with diverse expertise to come together on a common platform to overcome the major challenges faced by the field of wearable biofuel cells. Such collaborative efforts will be essential for the success of wearable biofuel cells and to harness their full potential. Why Biofuel Cells for Wearable Applications?Recent development of bio-integrated wearable electronics that provide continuous information, 1,2 entertainment, 3,4 help in carrying out routine activities 5 are a result of our insatiable desire to develop technologies that make lives easy. The nascent field of body-bound electronics is still is in its infancy and there exists several challenges that ought to be addressed for successful adaptation of the technology by various market segments. [6][7][8][9] Identifying suitable wearable energy sources is one of the biggest omnipresent challenge that cuts across almost all wearable electronics fields. 10 The situation is getting further exacerbated as the field of wearable electronics advances toward developing tiny, yet complex, multi-tasking wearable devices that continuously require high levels of energy supply for optimal performance. Research efforts to overcome this issue can be broadly classified into developing low-energy electronics, 11 adaptive algorithms for intelligent, low-power consuming electronics 12 and high energy density power sources. 13 Of these, development of efficient power sources has attained the greatest attention. Usage of conventional power sources, such as, lithium ion and alkaline batteries result in increased bulkiness and rigidity of the wearable electronics wherein just a fraction of the device weight is due to electronics while the rest is because of the battery. Such integration of conventional power sources with wearable electronics thus vitiates the overall attractiveness of the wearable system. Hence, there has been a genuine effort within the scientific community toward developing new formats of power sources for wearable applications. One of the most obvious and widely explored avenues is the development of thin, flexible and even stretchable batteries and supercapacitors that can be easily mated with the human body.14-16 Such body-compliant energy storage systems are quite attracti...

show abstract

Subdermal Flexible Solar Cell Arrays for Powering Medical Electronic Implants

Cited by 128 publications

References 60 publications

Energy Harvesting by Subcutaneous Solar Cells: A Long-Term Study on Achievable Energy Output

Energy Harvesting by Subcutaneous Solar Cells: A Long-Term Study on Achievable Energy Output

Toward Soft Skin‐Like Wearable and Implantable Energy Devices

Review—Wearable Biofuel Cells: Past, Present and Future

Contact Info

Product

Resources

About