| The creature’s eyes are remarkable imaging devices, with many attractive design features. Prominent among these is a curved detector geometry, which enables a wide field of view and low aberrations with simple, few-component imaging optics, found in many biological systems. The ability to implement electronic and optoelectronic systems on non-planar surfaces could be useful not only for creature’s eye cameras and other classes of bio-inspired device designs, but also for conformal integration on or in biological systems as monitoring devices, prosthetics and so on. This type of configuration is extremely difficult to achieve using established optoelectronics technologies, owing to the intrinsically planar nature of the patterning, deposition, etching, materials growth and doping methods that exist for fabricating such systems. Although some work based on plastic deformation of planar sheets and folding of elastic membranes have shown some promise, each has drawbacks. None is suitable for making large electronic devices, because the mechanical strains needed to accomplish the planar to curved transformation (for example40%) greatly exceed the fracture strains (for example a few percent) of all known electronic materials, particularly the most well-developed inorganics. So, the ability to implement electronic and optoelectronic systems on non-planar surfaces could be very useful, developing from traditional semiconductor technologies. And inspired from the bionics, we are trying to make a compound eye camera.We made a flexible and stretchable16x16photo-diode array based on single-crystalline silicon by combining traditional semiconductor technologies and new technique. Then we made PDMS micro-lens array. Transfer the photo-diode array to the backside of micro-lens array. And then they were bended and attached to a hemispherical rod. A compound eye camera was finally made the optical pictures were took by the artificial compound eye camera successfully. |
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