Kevin He Rose Hills
Investigating 2D Molecular Interactions for Memristor Realization
Memristors are non-linear circuit elements theorized to mimic the memory function of biological synapses and have the potential to transform computing through neuromorphic systems and new computer architectures. Unlike conventional memristors that rely on oxide materials and face challenges of scalability and stability, our project investigates molecularly decorated graphene-based field-effect transistors (FETs). In these devices, molecules deposited on graphene surfaces can be moved by electrical currents through electromigration, and their arrangement directly alters the electronic resistance of the device—effectively “storing” information. This summer, I worked to fabricate and characterize these FETs, utilizing techniques such as graphene transfer, shadow mask fabrication, and atomic force microscopy to clean 2D surfaces. I also trained on advanced tools like the scanning tunneling microscope to image molecular motion and measure electrical transport. My work seeks to identify the critical parameters that enable stable, reproducible resistance switching, providing insights into the feasibility of electromigration-driven memristors as a next-generation computing technology.
Message To Sponsor
Thank you for supporting my research project! Without it, I would not be able to fully devote my time this summer to the Crommie lab in researching nanoscale device physics this summer. I greatly appreciate your commitment to promoting education and supporting academic research. Thanks again for your generosity and support!