| 84 | 2024 Annual Report Prof. Sloutskin Eli Department of Physics Experimental Soft Condensed Matter Physics 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 Our team studies the physics of soft matter, such as emulsions and colloidal suspensions. Despite the prevalence of these materials in everyday life, a fundamental physical understanding of their properties is still lacking. We employ cutting-edge light and electron microscopy methods to investigate these materials, as well as x-ray and light scattering and optical tweezer manipulation. Currently, we develop a fundamental mechanistic understanding of the spectacular and counterintuitive examples of liquid emulsion self-organization discovered by our team over the last decade. These simple liquid emulsion droplets exhibit spontaneous division, selfpropulsion, shape transformation (such as faceting and the formation of tentaclelike protrusions), and other unusual effects, rendering them a unique model system for biomimicry and smart material applications. These phenomena are driven and controlled by the self-assembly of two-dimensional crystals covering the surfaces of these droplets. In general, the elastic properties of two-dimensional (2D) crystals fundamentally differ from those of classical bulk crystals. However, studying them, whether theoretically or experimentally, is challenging. Therefore, despite the importance of such crystals for nanotechnology, most of their fundamental properties are obscure. Our emulsions allow the elasticity of 2D crystals to be probed by direct experiments, providing insight into the fundamentals of elasticity at the molecular scale. A cylindrical liquid droplet, covered by a 2D crystal, undergoes buckling and kink formation subject to longitudinal stress in a microwell. Publications 2023 and 2024 • Emery Hsu, Daeyeon Lee, Eli Sloutskin. “Non-Classical Euler Buckling and Brazier Instability in Cylindrical Liquid Droplets.” Nano Letters, 2024. • Sagi Hacmon, Shir R Liber, Lee Shool, Alexander V Butenko, Ayelet Atkins, Eli Sloutskin. ““Magic Numbers” in Self‐ Faceting of Alcohol‐Doped Emulsion Droplets.” Small , 2023. Dr. Stern Michael Department of Physics Quantum Nanoelectronics Laboratory Research Areas • Mesoscopic physics • Semiconductor physics • Quantum information • Superconducting circuits • Hybrid quantum systems Abstract The Quantum Nanoelectronics Laboratory studies the quantum behavior of superconducting electrical circuits and their coupling with nanosystems like spins in semiconductors. Our experimental techniques combine nanofabrication, dilution refrigeration, scanning probe microscopy, and ultra-low-noise microwave measurements. Colorized SEM micrograph of a flux qubit. Publications 2023 and 2024 • Amit Jash, Michael Stern, Subhradeep Misra, Vladimir Umansky, Israel Bar Joseph. “Giant Hyperfine Interaction Between a Dark Exciton Condensate and Nuclei.” Science Advances, 2024. • Regis A Chelly, Tikai Chang, Itamar Holzman, Tamir Cohen, Joseph Kantorovitsch, Michael Stern. “Variance Properties of the Microwave Absorption Spectrum of an Ensemble of Nitrogen Vacancy Centers in Diamond.” EPL, 2023. Dr. Teblum Eti Projects Manager AFM Publications 2023 and 2024 • Naga Jasti, Shay Tirosh, Ansuman Halder, Eti Teblum, David Cahen. “CW Laserassisted Evaporation of Halide Perovskite Thin Films from a Single Stoichiometric Source.” Journal of Vacuum Science & Technology A, 2024. • Srijith Srijith, Rajashree Konar, Eti Teblum, Vivek Kumar Singh, Madina Telkhozhayeva, Michelangelo Paiardi, Gilbert D Nessim. “CVD-Synthesized 2D Non-Stoichiometric Copper Selenide (ß-Cu2-xSe) for Ultra-Fast Tetracycline Hydrochloride Degradation Under Solar Light.” Molecules, 2024.
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