Super-Resolution Imaging by Arrays of High-Index Spheres Embedded in   Transparent Matrices
  We fabricated thin-films made from polydimethylsiloxane (PDMS) with embedded high-index (n~1.9-2.2) microspheres for super-resolution imaging applications. To control the position of microspheres, such films can be translated along the surface of the nanoplasmonic structure to be imaged. Microsphere-assisted imaging, through these matrices, provided lateral resolution of ~{\lambda}/7 in nanoplasmonic dimer arrays with an illuminating wavelength {\lambda}=405 nm. Such thin films can be used as contact optical components to boost the resolution capability of conventional microscopes. 
Kenneth W. Allen, Navid Farahi, Yangcheng Li, Nicholaos I.   Limberopoulos, Dennis E. Walker Jr., Augustine M. Urbas, and Va...
physics.optics