File Name : figure-s1.jpg Caption : figure s1. the algorithm performance tracking of ga for the three sols File Name : figure-s2.jpg Caption : figure s2. experimentally measured refractive index of sixny wafer File Name : figure-s3.jpg Caption : figure s3. schematic of optical measurement setup for sols’ electromagnetic focusing properties. pzt: piezoelectric transducer. File Name : figure-s4.jpg Caption : figure s4 the robustness of the focusing behavior on the non-ideal 0/π phase modulation.