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However, the fabrication of flexible and conformal surfaces is hindered by the incompatible microfabrication processes of traditional rigid, silicon-based substrates. A kirigami strategy for hemispherical surface assembly is proposed to construct a MoS2-based retina-like photodetector array. The device is first fabricated on a flat polyimide (PI) substrate and then tailored using a laser. By approximating the spherical surface using planar sectors, the laser-cut PI film can tightly adhere to the PDMS spherical shell without significant wrinkles. The responsivity and specific detectivity of our conformal photodetector can reach as high as 247.9 A\/W and 6.16 \u00d7 1011 Jones, respectively. The array integrates 180 pixels on a spherical crown with a radius of 11 mm, and a hollow letter \u201cT\u201d is successfully recognized. Comprehensive experimental results in this work reveal the utility of our device for photoelectric detection and imaging. We believe that our work provides a new methodology for the exploitation of 2D material-based retinal image sensors.<\/jats:p>","DOI":"10.3390\/nano15080622","type":"journal-article","created":{"date-parts":[[2025,4,18]],"date-time":"2025-04-18T08:24:07Z","timestamp":1744964647000},"page":"622","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Conformal Retinal Image Sensor Based on Electrochemically Exfoliated MoS2 Nanosheets"],"prefix":"10.3390","volume":"15","author":[{"given":"Tianxiang","family":"Li","sequence":"first","affiliation":[{"name":"Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows, Jinan 250023, China"},{"name":"Innovation Center for Electromagnetic Functional Structure, Jinan 250023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Yuan","sequence":"additional","affiliation":[{"name":"Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows, Jinan 250023, China"},{"name":"Innovation Center for Electromagnetic Functional Structure, Jinan 250023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wentong","family":"Cai","sequence":"additional","affiliation":[{"name":"Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows, Jinan 250023, China"},{"name":"Innovation Center for Electromagnetic Functional Structure, Jinan 250023, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qi","family":"Su","sequence":"additional","affiliation":[{"name":"School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan 430074, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lingxian","family":"Kong","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Intelligent Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4349-690X","authenticated-orcid":false,"given":"Bo","family":"Sun","sequence":"additional","affiliation":[{"name":"School of Aerospace Engineering, Huazhong University of Science and Technology, Wuhan 430074, China"},{"name":"Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518057, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6977-9700","authenticated-orcid":false,"given":"Tielin","family":"Shi","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Intelligent Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,4,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2000152","DOI":"10.1002\/sstr.202000152","article-title":"Flexible Image Sensors with Semiconducting Nanowires for Biomimic Visual Applications","volume":"2","author":"Lou","year":"2021","journal-title":"Small Struct."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1664","DOI":"10.1038\/s41467-017-01824-6","article-title":"Human Eye-Inspired Soft Optoelectronic Device Using High-Density MoS2-Graphene Curved Image Sensor Array","volume":"8","author":"Choi","year":"2017","journal-title":"Nat. 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