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Program Highlights

Self-assembling DNA Origami Shells

The self-assembly of biological molecules into large, but finite-size, superstructures is fundamental to life. A grand challenge for colloidal self-assembly is to produce colloidal monomers with valence-limited interactions, that have arbitrary angles and strengths, to produce structures with the precision, complexity and functionality of biological assemblies.

Superatom Regiochemistry Dictates the Assembly and Surface Reactivity of a Two-Dimensional Material

The area of two-dimensional (2D) materials research would benefit greatly from the development of synthetically tunable van der Waals (vdW) materials. While the bottom-up synthesis of 2D frameworks from nanoscale building blocks holds great promise in this quest, there are many remaining hurdles, including the design of building blocks that reliably produce 2D lattices and the growth of macroscopic crystals that can be exfoliated to produce 2D materials.

Crossover between strongly coupled and weakly coupled exciton superfluids

We studied graphene double layers separated by an atomically thin insulator. Under applied magnetic field, electrons and holes couple across the barrier to form bound magneto-excitons. Using temperature-dependent Coulomb drag and counterflow current measurements, we were able to tune the magneto-exciton condensate through the entire phase diagram from weak to strong coupling.

Quantum anomalous Hall effect in atomically-thin semiconductor layers

Analogous to a superconductor, the quantum anomalous Hall effect can transport electrons in a sample without dissipating any energy.

Robotic Pixel Assembly of Atomically-Thin Materials

As new methods are established to synthesize atomically-thin quantum materials, it becomes necessary to develop a technique to take those materials and assemble them into complex structures.

Colorimetric Quantification of Linking in Thermoreversible Nanocrystal Gel Assemblies

This highlight demonstrates the gelation assembly of colloidal nanocrystals using uniquely developed ligands that can form a metal coordination linkage. Metal ions that are paired with ligand functional groups were used to control the assembly of nanocrystals from a stable dispersion to full spanning gel networks. The metal coordination linkage was reversed using temperature as an external trigger and enabled thermally switchable nanocrystal gel networks.

CDCM Industrial Mentorship Program Prepares Students for the Workforce of Tomorrow

The Industrial Mentorship Program connects undergraduate students, graduate students and post-doctoral fellows to a mentor in industry. This program is designed to expose participants to fundamental research as it relates to societal and economic development; enable them to broaden their networks; and facilitate a successful transition into the workforce.

Temporally and Spatially Resolved Carrier Dynamics in Organic-Inorganic Hybrid Perovskites

This highlight illustrates a key characterization advance realized at the Center for Dynamics and Control of Materials – temporally resolved light-induced microwave impedance microscopy. 

Stabilizing A Double Gyroid Network Phase by Blending of LAM and CYL Forming Block Oligomers

Based on the hypothesis that blending LAM- and CYL-forming block oligomers may yield stable network phases, molecular dynamics simulations are used to study binary blend self-assembly of AB-type diblock (n-tridecan-1,2,3,4-tetraol) and AB2-type miktoarm (5-octyl-tridecan-1,2,3,4-tetraol)  amphiphiles.

Dopant Segregation at Dislocations in an Emerging Oxide Semiconductor

Emerging semiconductors such as tin-based oxides have enormous application potential in devices, as they are transparent, support highly mobile electrons, and have wide “energy gaps”. Unlike better developed semiconductors, however, these materials are prone to harboring defects, which can limit essential properties such as electron mobility.