Human-eye-inspired soft optoelectronic device using high-density MoS2-graphene curved image sensor array

Title
Human-eye-inspired soft optoelectronic device using high-density MoS2-graphene curved image sensor array
Authors
손동희최문기리우시일박옥규임창균킨시아오리앙이길주김명빈조이형이종하권승해전누리송영민루난슈김대형최창순김민성김재민조경원
Issue Date
2017-11
Publisher
Nature Communications
Citation
VOL 8-1664-38
Abstract
Soft bioelectronic devices provide new opportunities for next-generation implantable devices owing to their soft mechanical nature that leads to minimal tissue damages and immune responses. However, a soft form of the implantable optoelectronic device for optical sensing and retinal stimulation has not been developed yet because of the bulkiness and rigidity of conventional imaging modules and their composing materials. Here, we describe a high-density and hemispherically curved image sensor array that leverages the atomically thin MoS2-graphene heterostructure and strain-releasing device designs. The hemispherically curved image sensor array exhibits infrared blindness and successfully acquires pixelated optical signals. We corroborate the validity of the proposed soft materials and ultrathin device designs through theoretical modeling and finite element analysis. Then, we propose the ultrathin hemispherically curved image sensor array as a promising imaging element in the soft retinal implant. The CurvIS array is applied as a human eye-inspired soft implantable optoelectronic device that can detect optical signals and apply programmed electrical stimulation to optic nerves with minimum mechanical side effects to the retina.
URI
http://pubs.kist.re.kr/handle/201004/67064
ISSN
2041-1723
Appears in Collections:
KIST Publication > Article
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