ABSTRACT
Water ices are ubiquitous in nature. The structure and growth of ice plays critical roles in an incredibly broad spectrum of materials science, tribology, biology, atmospheric science. So far, massive experiments and theoretical calculations have led to the discovery of eighteen crystalline phases (three-dimensional phases), among which the hexagonal ice (Ice Ih) is the most common ice in the biosphere. However, whether the two-dimensional (2D) ices can naturally exist has been under longstanding debate. By careful kinetic control, we succeeded to grow a self-stable 2D ice on hydrophobic surfaces [1]. The high-resolution scanning probe microscopy (SPM) revealed an interlocked bilayer-ice structure, consisting of two flat hexagonal water layers. Combined with theoretical simulations, we were able to reconstruct the 2D ice growth process with atomic resolution. Such a 2D ice can exist independent of supporting substrates and exhibit many interesting physical properties, such as correlated nuclear quantum effects [2], ionic nematic phase [3], superlubricity [4], etc.
References:
[1] Ma et al., Nature 577, 60 (2020); [2] Tian et al., Science 377, 315 (2022); [3] Tian et al., under revision; [4] Wu et al., to be submitted.
BIOGRAPHY
Ying Jiang is a Boya Distinguished Professor of Peking University. He received his PhD from Institute of Physics, Chinese Academy of Sciences (CAS) in 2008. After working as a Postdoctoral Associate in University of California, Irvine (2008-2010), he joined International Center for Quantum Materials, Peking University as a tenure-track assistant professor, and was promoted to a full professor in 2018. Jiang’s research fields are condensed matter physics and chemical physics. His research achievement covers from the innovative development of scanning probe microscopy/spectroscopy to the application of those techniques to probe and manipulate single molecules, nanostructures and low-dimensional materials with atomic precision. He has published over 70 peer-reviewed papers, including 3 in Science, 7 in Nature, and 10+ in Nature Journals. His research works were selected twice as Top-ten Science Advances in China (2016, 2018). Selected awards include Distinguished Young Scholars of NSFC (2017), Tan Kah Kee Young Scientist Award (2018), Fellow of American Physical Society (2019), Nishina Asia Award (2020), AAA Robert T. Poe Prize (2020), Xplorer Prize (2022).
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