Emergent Physics on the Route from Crystals to Amorphous Solids

Abstract

Comprehensive SummaryBy introducing and gradually increasing the magnitude of disorder into both crystalline particle packings and crystalline networks, we realize the evolution from crystals to amorphous solids. The evolution of structures and mechanical properties during this process is expected to help us understand the physical origin of the peculiar properties of amorphous solids, e.g., the boson peak, so as to build up the bridge between well‐established physics of crystals and that of amorphous solids. To our surprise, this attempt also reveals some extraordinary phenomena, including the hidden order‐disorder transition from crystals to disordered crystals and the emergence of mechanical metamaterials with negative Poisson's ratios. What is the most favorite and original chemistry developed in your research group?Our favorite research findings are some extraordinary phase behaviors of soft‐core particle systems, including the discontinuous‐continuous transition of two‐dimensional melting, formation of quasicrystals and the transition from crystals to disordered crystals discussed in this article.How do you get into this specific field? Could you please share some experiences with our readers?I entered the field of soft matter during my graduate study at Yale University. I have been attracted by so many interesting and complex problems in soft matter. During the research, we keep meeting new phenomena and problems, which keep broadening my interest. Learning by doing is a good way to enjoy research.How do you supervise your students?I always assign one or two problems to beginners. The problems may not be very specific. My purpose is to encourage the students to work independently and cultivate their abilities of literature reading and finding and solving problems. I listen to their reports in weekly group meetings and discuss about their work whenever they come to show their progress or I have some new ideas. Once they achieve some significant progress, I will put more effort to help finalize their work.What is the most important personality for scientific research?Persistence.What are your hobbies?Jogging, walking, music, and movies.What is your favorite journal(s)?Physical Review series.