Journal
NANO ENERGY
Volume 91, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2021.106676
Keywords
Artificial skin; Transparent photovoltaic; Thermoreceptor; Nociceptor memory; Pyro-photovoltaic; Human electronics
Categories
Funding
- Basic Science Research Program through the National Research Foundation by the Ministry of Education of Korea and Brain Pool Program - Ministry of Science and ICT [NRF-2020R1A2C1009480, 2020R1I1A1A01068573, NRF-2020H1D3A2A02085884]
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A flexible, transparent photovoltaic (TPV) device is used to create an artificial skin and sensory memory platform, allowing for a wider temperature detection range and sensory memory of extreme thermal stimuli. It also utilizes a mechanism similar to nociceptors to protect tissues from harm.
An artificial skin and sensory memory platform is produced using a flexible, transparent photovoltaic (TPV) device. The TPV device is composed of a metal oxide heterojunction (n-ZnO/p-NiO) and transmits visible light (> 50%) while producing substantial electric power (0.5 V and 200 mu A cm(-2)). This TPV device is a transparent energy interface that can be used to detect signals and propagate information without an external energy supply. The TPV artificial skin offers a temperature detection range (0-75 degrees C) that is wider than that of natural skin (5-48 degrees C) due to the temperature-sensitive pyrocurrent from the ZnO layer. Moreover, the TPV thermoreceptor offers sensory memory of extreme thermal stimuli. Much like natural skin, artificial skin uses the nociceptor mechanism to protect tissue from harmful damage via signal amplification (hyperalgesia) and early adaption (allodynia). This demonstrates the many features of TPV artificial skin, which can sense and transmit signals and memorize information under self-operation mode. This transparent photovoltaic skin can provide sustainable energy for use in human electronics.
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