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Topic: self-assembly

Seminar
2 seminars

In Chemistry and Physics

Seminar · Chemical Biology

Spontaneous emergence of chirality in systems of self-replicating molecules

Sijbren Otto · University of Groningen

Thu, May 16, 2024 · 14:30 UTC

Sijbren Otto explores how features associated with life can arise from initially lifeless chemical components. The systems couple reversible oligomerization of comparatively simple molecular building blocks with self-assembly. Their behavior includes the spontaneous appearance of self-replicating molecules, catalytic activity extending beyond autocatalysis, and the breaking of chiral symmetry. These observations connect the emergence of molecular replication and catalysis with the origins of biological handedness.

Seminar · Materials Science

Frustrated Self-Assembly of Non-Euclidean Crystals of Nanoparticles

Xioaming Mao · University of Michigan

Wed, Apr 14, 2021 · 08:00 UTC

Self-organized complex structures in nature, e.g., viral capsids, hierarchical biopolymers, and bacterial flagella, offer efficiency, adaptability, robustness, and multi-functionality. Can we program the self-assembly of three-dimensional (3D) complex structures using simple building blocks, and reach similar or higher level of sophistication in engineered materials? Here we present an analytic theory for the self-assembly of polyhedral nanoparticles (NPs) based on their crystal structures in non-Euclidean space. We show that the unavoidable geometrical frustration of these particle shapes, co