Reconfigurable Responses in Mixed-Dimensional Heterojunctions


Oluwaseyi Balogun | Mechanical Engineering | Civil and Environmental Engineering
Maria K. Chan | Northwestern-Argonne Institute of Science and Engineering
Pierre Darancet | Northwestern-Argonne Institute of Science and Engineering
Mark C. Hersam | Materials Science & Engineering | Chemistry | EECS | Medicine | Applied Physics
Lincoln J. Lauhon (Leader) | Materials Science & Engineering | Applied Physics
Tobin J. Marks | Chemistry | Materials Science & Engineering | Applied Physics
Tamar Seideman | Chemistry | Physics | Applied Physics
Nathaniel Stern | Physics | Applied Physics
Emily A. Weiss (Co-Leader) | Chemistry | Applied Physics

IRG 1 explores how heterojunctions consisting of nanoelectronic materials of differing dimensionality are influenced by dielectric screening, electronic band/level offsets, and interfacial regions. By utilizing low-dimensional materials synthesis, surface chemical functionalization, spatially and spectrally resolved characterization, and advanced computation, IRG-1 develops quantitative descriptions of the nonlinear responses in mixed-dimensional heterojunctions. Elucidation of the mechanisms governing structural changes, and the corresponding changes in optoelectronic properties, allows controllable reconfiguration in response to stimuli including electric fields, photons, heating, and reactive species with implications for neuromorphic computing.