Lecturer: Prof. Tal Carmon Affiliation: Department of Mechanical Engineering, Technion - Israel Institute of Technology Abstract: While theory predicts photon lifetime in exceeding of 10 second for optical cavities, it is hard to make the required solid device that does not have even a single missing atom in the crystal (dislocation), is free of thermal stress (for glasses), and without a single atom popping out of its perfectly smooth interface. In contrast with solids and quite the opposite, it is hard to imagine a liquid with an atomic-scale void or surface irregularity. To give it a quantitative scale, a Bohr-radius scale void, representing a missing liquid atom in liquids, will feel a compensating force that is 10¹⁶ times larger than gravity. In their inherent essence therefore, liquids permit what solids restrict in the effort for reaching giant quality factors. I will review recent experiments from my laboratory where optomechancial oscillations were excited in droplets. This can transform optics to enable dislocation free devices ant transform quality factors to be giant. ‏האירוע הזה כולל שיחת וידאו ב-Google Hangouts. הצטרף: https://hangouts.google.com/hangouts/_/mail.huji.ac.il/condensed?hceid=b...