Argonne National Laboratory

Upcoming Events

Theory and Practice of Nanoparticle Self-Assembly

NST Colloquium
Nicholas Kotov, University of Michigan
April 18, 2018 11:00AM to 12:00PM
Building 440, Room A105-106

Abstract: Inorganic nanoparticles (NPs) have the ability to self-organize into variety of structures with sophisticated and dynamic geometries. Analysis of experimental data for different types of NPs indicates a general trend of self-assembly under a wider range of conditions and having broader structural variability than self-assembling units from organic matter. Remarkably, the internal organization of self-assembled NP systems rival in complexity to those found in biology, which reflects the biomimetic behavior of nanoscale inorganic matter. In this talk, the following questions will be addressed:

  • What are the differences and similarities of NP self-organization compared with similar phenomena involving organic and biological building blocks?
  • What are the forces and related theoretical assumptions essential for NP interactions?
  • What is the significance of NP self-assembly for understanding emergence of life?
  • What are the technological opportunities of NP self-organization?

Self-organization of chiral nanostructures will illustrate the importance of subtle anisotropic effects stemming from the collective behavior of NPs and the non-additivity of their interactions. The fundamental significance of studies in this area from this and other groups will be discussed in relation to the origin of homochirality on Earth and spontaneous compartmentalization (protocells). The practicality of self-organization of NPs will be discussed in relation to charge storage technologies, DNA/protein biosensing, chiral catalysis, and combating antibiotic-resistant bacteria and other infections, including rapidly mutating viruses.