Hojoon Ryu

Papers

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About

Hojoon Ryu is a pioneering researcher at the intersection of two-dimensional materials and ferroelectric devices, with a focus on unconventional computing paradigms. His most cited work, "Nonconventional Analog Comparators Based on Graphene and Ferroelectric Hafnium Zirconium Oxide" (2021), introduces a fundamentally new approach to analog signal processing. By exploiting graphene’s zero bandgap and symmetric electron/hole transport—properties absent in traditional semiconductors—Ryu demonstrates a comparator that computes the absolute difference between two signals, |A − B|, rather than merely comparing their magnitudes. This V-shaped transfer characteristic, enabled by integration with ferroelectric hafnium zirconium oxide, represents a major contribution to beyond-CMOS circuit design. Though early in his career with 5 citations to this flagship paper, Ryu’s work has already attracted attention for its potential in neuromorphic computing and energy-efficient analog-to-digital conversion. His research bridges fundamental materials science with practical circuit innovation, offering a glimpse into how exotic transport phenomena can be harnessed for next-generation electronics. For students and researchers exploring post-silicon logic and memory, Ryu’s contributions exemplify how unconventional materials can inspire entirely new computational primitives.