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

Changsoon Choi, Moon Kee Choi, Siyi Liu, Minsung Kim, Ok Kyu Park, Changkyun Im, Jaemin Kim, Xiaoliang Qin, Gil Ju Lee, Kyoung Won Cho, Myungbin Kim, Eehyung Joh, Jongha Lee, Donghee Son, Seung-Hae Kwon, Noo Li Jeon, Young Min Song, Nanshu Lu () and Dae-Hyeong Kim ()
Additional contact information
Changsoon Choi: Institute for Basic Science (IBS)
Moon Kee Choi: Institute for Basic Science (IBS)
Siyi Liu: Department of Aerospace Engineering and Engineering Mechanics, University of Texas at Austin
Minsung Kim: Institute for Basic Science (IBS)
Ok Kyu Park: Institute for Basic Science (IBS)
Changkyun Im: Seoul National University
Jaemin Kim: Institute for Basic Science (IBS)
Xiaoliang Qin: Onfea Computing LLC
Gil Ju Lee: Gwangju Institute of Science and Technology
Kyoung Won Cho: Institute for Basic Science (IBS)
Myungbin Kim: Institute for Basic Science (IBS)
Eehyung Joh: Institute for Basic Science (IBS)
Jongha Lee: Institute for Basic Science (IBS)
Donghee Son: Institute for Basic Science (IBS)
Seung-Hae Kwon: Korea Basic Science Institute
Noo Li Jeon: Seoul National University
Young Min Song: Gwangju Institute of Science and Technology
Nanshu Lu: Department of Aerospace Engineering and Engineering Mechanics, University of Texas at Austin
Dae-Hyeong Kim: Institute for Basic Science (IBS)

Nature Communications, 2017, vol. 8, issue 1, 1-11

Abstract: 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.

Date: 2017
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DOI: 10.1038/s41467-017-01824-6

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