BAR-ILAN INSTITUTE OF NANOTECHNOLOGY & ADVANCED MATERIALS | 2019 ANNUAL REPORT

89 Prof. Eli Sloutskin Department of Physics Member of BINA, Nano-Materials Center Research Areas • Experimental studies of phase transitions in colloids. • Quantitative real-time 3D confocal microscopy, holographic optical tweezing, and light scattering. • Crystal nucleation. • Non-crystalline solids: structural measurements to reveal the physics of glass formation. • Interfacial phenomena in colloidal and molecular systems. Abstract Experimental Soft Condensed Matter Physics We employ optical microscopy, light scattering, optical tweezing, and analytical centrifugation, to study phases and phase transitions in systems of colloids, micron-sized particles in a solvent. These systems exhibit liquid, crystalline, glass, gel and liquid-crystalline phases, where the colloidal particles mimick atoms and molecules. Employing confocal microscopy, we follow tens of thousands of individual particles in real time, in either two or three spatial dimensions. This unprecedentedly- detailed experimental information, which is not available with any other experimental technique, allows a much deeper understanding of collective phenomena, such as crystal nucleation, glass formation, and random solid packing to be achieved. We also study the interfacial physics of liquid emulsion droplets. Recently, we have discovered a unique interfacial phase transition, which allows the droplet shapes to be temperature-tuned from spherical to faceted, with their bulk remaining liquid. Liquid droplets ( ~ 10 μ m in size) spontaneously adopt the shape of a hexagram (grey) and an icosahedron (green). Micron-size colloids (red) self- assembled into a crystalline lattice (optical microscopy). Publications 2018 and 2019 • O. Marin, M. Deutsch, D. Zitoun, and E. Sloutskin, “Nanoparticle positioning on liquid and polymerized faceted droplets”, J. Phys. Chem. C (in press), 2019 . • S. R. Liber, A. V. Butenko, M. Caspi, S. Guttman, M. Schultz, A. B. Schofield, M. Deutsch, and E. Sloutskin, “Precise self- positioning of colloidal particles on liquid emulsion droplets”, Langmuir 35, 13053, 2019 . • Janai, A. V. Butenko, A. B. Schofield, E. Sloutskin, “Periodic buckling and grain boundary slips in a colloidal model of solid friction”, Soft Matter 15, 5227 2019 . • S. Guttman, E. Kesselman, A. Jacob, O. Marin, D. Danino, M. Deutsch, and E. Sloutskin, “Nanostructures, faceting, and splitting in nano- to yocto-liter liquid droplets”, Nano Lett. 19, 3161 2019 . • O. Wagner, M. Schultz, E. Edri, R. Meir, E. Barnoy, A. Meiri, H. Shpaisman, E. Sloutskin, and Z. Zalevsky, “Imaging of nanoparticle dynamics in live and apoptotic cells using temporally- modulated polarization”, Sci. Rep. 9, 1650 2019 . • O. Marin, M. Alesker, S. Guttman, G. Gershinsky, E. Edri, H. Shpaisman, R. E. Guerra, D. Zitoun, M. Deutsch, and E. Sloutskin, “Self-faceting of emulsion droplets as a route to solid icosahedra and other polyhedral”, J. Colloid Interface Sci. 538, 541 2019 . • O Marin, M Alesker, S Guttman, G Gershinsky, E Edri, H Shpaisman, RE Guerra, D Zitoun, M Deutsch, E Sloutskin, “Emulsion droplets’ self-faceting route to solid icosahedra and other polyhedra”, Journal of Colloid and Interface Science, 2018 . • I Garcia-Aguilar, P Fonda, L Giomi, E Sloutskin, “Mechanics of Shape Shifting Droplets”, Bulletin of the American Physical Society, 2018 . Dr. Michael Stern Department of Physics Member of BINA, Nano-Magnetism Center Research Areas • Mesoscopic Physics • Semiconductor Physics • Quantum information • Superconducting circuits • Hybrid Quantum Systems Publications 2018 and 2019 • S. Misra, M. Stern, A. Joshua, V. Umansky, and I. Bar-Joseph, “Experimental Study of the Exciton Gas-Liquid Transition in Coupled QuantumWells,” Phys. Rev. Lett., vol. 120, no. 4, 2018 . Prof. Chaim Sukenik Department of Chemistry President of the Jerusalem College of Technology Member of BINA, Nano-Materials Center Research Areas • Self-assembled monolayer films • Nanoscale organic and inorganic coatings • Reaction mechanisms in organized media • Biomaterials • High performance polymers • Composites and new materials Publications 2018 and 2019 • C Thamaraiselvan, Y Carmiel, G Eliad, CN Sukenik, R Semiat, CG Dosoretz, “Modification of a polypropylene feed spacer with metal oxide-thin film by chemical bath deposition for biofouling