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1、A hemispherical electronic eye camera based oncompressible silicon optoelectronics,基于可压缩的硅光电子材料的半球形电子照相机,Author Contributions,H.C.K&M.P.S&J.A.R designed the experiments.H.C.K&M.P.S&J.S performed the experiments and analysis.H.C.K，J.S，Y.H and J.A.R wrote the paper.,Abstract,In this paper,we introduce
2、 a means of producing curvilinear optoelectronics and electronic eye imagers that uses well-established electronic materials and planar processing approaches to create optoelectronic systems on flat,two dimensional surfaces in unusual designs that tolerate compression and stretching to large levels
3、of strain.this feature enables planar layouts to be geometrically transformed to nearly arbitrary curvilinear shapes.,Was it difficult?/yes,The human eye is a remarkable imaging device,with many attractive design features.Prominent among these is a hemispherical detector geometry,similar to that fou
4、nd in many other biological systems,that enables a wide field of view and low aberrations.Unfortunately,existing technologies have been developed only for surfaces of rigid.the mechanical strains needed to accomplish the planar to hemispherical geometrical transformation greatly exceed the fracture
5、strains of all known electronic materials.,Was it useful?/yes,The ability to implement(实施)electronic and optoelectronic（光电子的）systems on non-planar（非平面）surfaces could be useful not only for hemispherical cameras,but also for biological systems as monitoring devices（检测装置）,prosthetics（假肢）and so on.,How
6、 to solve the problem?,(1)将光电子电路做成超薄结构，采用不同寻常的二维可压缩构型(2)特殊设计的弹性元件将平面图案变为半球形。using compressible silicon focal plane arrays and hemispherical,elastomeric transfer elements to fabricate electronic eye cameras.,A transfer element fabricated(构造)in PDMS（硅氧烷）by casting（铸造）and curing（固定）against an appropria
7、tely designed template.Stretching in the radial（辐射状的）direction forms a flat drumhead（鼓膜）membrane in which all points in the PDMS are in tension.Lifting a prefabricated（预制）focal plane array and associated electronics from a source wafer onto the surface of this drumhead（thin narrow compressible line）
8、,allowing the PDMS to relax back to its initial（初始）shape,transforms the planar device layout into a hemispherical（半球形的）shape This process allows the planar-to-spherical geometrical transformation to be accomplished without creating substantial（牢固的）strains in any of the active components of the focal
9、 plane array.(3)Glass lens(晶体，透镜)substrate（基础底片）。Adhesive(粘稠的),2.Design and electrical properties,Design inside,Surface,Main frame,Electrical properties,Shielded from light,Exposed to light,show a high-contrastresponse to light exposure,3.Photographs of a hemispherical electronic eye camera andrepre
10、sentative output images,Photographs,Representative output images,1616,Even more complex pictures can be obtained at highresolution using this simple scanning approach,4.Enhanced imaging in hemispherical cameras in comparison with planar camers,The drawing of an eye acquired with a hemispherical came
11、ra,Ray tracing(成像)predictions,Green circles：calculated focal points Blue curve：the detector surface of the hemispherical cameraRed curve：the detector surface of a planar camera,On a planar camera The left-and right-hand images were acquired at distances z=14.40mm and z=16.65mm,AdvantagesHigh qualityUniformity(无差异)of the pixels(像素)in the array(阵列).,The end,Thanks!,
