Lens-Free Holographic Microscopy (image) The Optical Society Caption (a) This is a schematic for lens-free pixel super-resolution holographic microscopy. The inset shows a scanning electron microscope (SEM) image of a 1 µm bead with the residue from the nano-lens that has been desiccated during the SEM sample preparation procedure. (b) This is a sample preparation technique that self-assembles nano-lenses around individual nano-particles. Credit Aydogan Ozcan Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.