| 83 | conventionally rely on the accumulation of preformed materials. A key feature of our methodology is its modularity, as it could be implemented on various material systems. Due to the flexibility in material choice, this innovative approach will open the door to new ways to act upon materials, with envisioned applications in 3D printing, electronics, food products, and sensing. We develop novel methods for bottom-up directed assembly by utilizing chemistry, physics, and materials science concepts. Publications 2023 and 2024 • Zohar A Arnon, Silvia Piperno, Dan C Redeker, Ewelina Randall, Alexei V Tkachenko, Hagay Shpaisman, Oleg Gang. “Acoustically Shaped DNA-Programmable Materials.” Nature Communications, 2024. • Avraham Kenigsberg, Shany Shperling, Ornit Nagler-Avramovitz, Heli PelegLevy, Silvia Piperno, Alon Skaat, Ari Leshno, Hagay Shpaisman, Noa Kapelushnik. “Harnessing Standing Sound Waves to Treat Intraocular Blood Cell Accumulation.” Micromachines, 2024. Prof. Shwartz Sharon Department of Physics Nonlinear X-ray Optics Research Areas • Demonstration of an X-ray Autocorrelator • Imaging of chemical bonds in solids, quantum imaging with X-rays • Second harmonic generation at X-ray wavelength, X-ray parametric down conversion • Generation of X-ray Bi-photons Abstract In the past few decades, the fields of nonlinear and quantum optics at visible and infrared wavelengths have grown rapidly. Nonlinear optical techniques have been applied to many diverse disciplines ranging from atomic, molecular, and solid-state physics and materials science to chemical dynamics, biophysics, medicine, and even neuroscience, where brain activity is studied through two-photon microscopy. The field of quantum optics has provided important insights into numerous quantum phenomena, and the demonstration of effects such as entanglement and squeezed light has led to the observations of remarkable results. However, ordinary nonlinear optics processes, taken into the X-ray regime, are known to be very weak, while available X-ray sources suffer from insufficient brightness. Recent and expected improvements in brightness and beam quality of X-ray sources, together with new facilities such as the X-ray freeelectron laser (FEL), offer the possibility of extending the concepts of nonlinear and quantum optics into X-ray energies. With their increased power, the new facilities allow the observation of new X-ray nonlinear and quantum effects. Our group uses these advanced technologies to study new effects at X-ray wavelengths. Most of our research is aimed at fundamental science, which focuses on demonstrating and studying novel nonlinear and quantum processes at X-ray wavelengths. This new system offers possibilities for better testing of universal concepts of quantum and nonlinear physics. Another significant portion of our research aims to develop new imaging and inspection techniques based on quantum and nonlinear phenomena. These techniques are expected to offer the ability to image and inspect phenomena and small objects on the atomic scale resolution. Publications 2023 and 2024 • Or Sefi, Adi Ben Yehuda, Yishai Klein, Ziv sobol, shalom bloch, Hila Schwartz, Eliahu Cohen, Sharon Shwartz. “20 µm Resolution Multipixel Ghost Imaging with High-Energy X-rays.” Optics Express, 2024. • Mathieu Manni, Adi Ben-Yehuda, Yishai Klein, Bratislav Lukic, Andrew Kingston, Alexander Rack, Sharon Shwartz, Nicola Viganò. “Synchrotron-Based X-ray Fluorescence Ghost Imaging.” Optics Letters, 2023. • Haim Aknin, Sharon Shwartz. “Nanometric-Scale Phase Contrast Imaging with Undetected X-ray Photons.” Quantum, 2023. • Adi Ben Yehuda, Or Sefi, Eliahu Cohen, Sharon Shwartz. "High-Resolution Imaging with Scattered X-ray Radiation." CLEO: Applications and Technology, 2023. • Dario De Angelis, Emiliano Principi, Filippo Bencivenga, Daniele Fausti, Laura Foglia, Yishay Klein, Michele Manfredda, Riccardo Mincigrucci, Angela Montanaro, Emanuele Pedersoli, Jacopo Stefano Pelli Cresi, Giovanni Perosa, Kevin C Prince, Elia Razzoli, Sharon Shwartz, Alberto Simoncig, Simone Spampinati, Cristian Svetina, Jakub Szlachetko, Alok Tripathi, Ivan A Vartanyants, Marco Zangrando, Flavio Capotondi. “Free Electron Laser Stochastic Spectroscopy Revealing Silicon Bond Softening Dynamics.” Physical Review B, 2023. • Yishai Klein, Alok K Tripathi, Edward Strizhevsky, Flavio Capotondi, Dario De Angelis, Luca Giannessi, Matteo Pancaldi, Emanuele Pedersoli, Kevin C Prince, Or Sefi, Young Yong Kim, Ivan A Vartanyants, Sharon Shwartz. “High-SpectralResolution Absorption Measurements with Free-Electron Lasers using Ghost Spectroscopy.” Physical Review A, 2023.
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