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[2026.06] Publication
[2026.06] Publication
We are pleased to announce that our latest research has been published in Nature Communications!
Sub-femtosecond Figure-of-Merit Millimeter-wave Switches via Solution-processed MoSβ for 6G Radio-frequency Front-ends
This work presents a transfer-free, large-area solution-processed MoSβ memristive switch platform for energy-efficient mmWave RF front-ends, enabling zero-static-power operation, sub-femtosecond RF performance, and circuit-level phase-shifter demonstrations for next-generation 6G systems.
π¬ Key Highlights:
mmWave RF Switching: Demonstrates low-loss, high-isolation, nonvolatile RF switching up to 67 GHz with zero-static-power operation.
Sub-femtosecond RF Performance: Achieves an exceptional RONΒ·COFF figure-of-merit of ~0.8 fs, corresponding to a cutoff frequency of ~187 THz.
Energy-efficient Switching: Enables rapid 76 ns switching with low switching energy of 1.57 nJ and endurance exceeding 2,000 cycles.
Novel SHUNT Configuration: Introduces inverse-state SHUNT operation to suppress self-switching while improving power handling and linearity.
Phase Shifter Applications: Demonstrates circuit-level viability through true-time-delay and hybrid-coupled phase shifters for mmWave beam-steering systems.
A huge congratulations to the first authors, Changwoo Pyo and Sungmoon Park, and all co-authors for this excellent work!
π Read the full paper here: https://www.nature.com/articles/s41467-026-74534-7
[2026.06] Publication
[2026.06] Publication
We are pleased to announce that our latest research has been published in Advanced Functional Materials!
Oxidized MoSβ-Based Multifunctional Memristive Hardware for Energy-Efficient mmWave Signal Processing and In-Memory Matrix Multiplication
This work presents an oxidized MoSβ-based multifunctional memristive hardware platform that integrates nonvolatile mmWave RF switching and energy-efficient in-memory vectorβmatrix multiplication for next-generation wireless systems.
π¬ Key Highlights:
mmWave RF Switching: Demonstrates low-loss, nonvolatile RF switching up to 67 GHz with zero-static-power operation.
High RF Performance: Achieves a cutoff frequency of 33.2 THz through low ON resistance and ultra-low OFF capacitance.
Energy Efficiency: Enables low-voltage resistive switching with ~140 pJ switching energy.
In-Memory Computing: Supports analog vectorβmatrix multiplication using multilevel conductance states in oxidized MoSβ memristors.
6G Signal Processing: Validates hardware-aware 1024-QAM, DFT, MIMO detection, and CSI compression simulations.
A huge congratulations to the first author, Juho Son, and all co-authors, for this excellent work!
π Read the full paper here: https://doi.org/10.1002/adfm.76362
[2026.01] Publication
[2026.01] Publication
We are thrilled to announce that our latest research has been published in Sensors and Actuators B: Chemical! This work presents a scalable, label-free RF biosensor designed for the precise detection of single-stranded circulating cell-free DNA (ss-cfDNA)βa crucial biomarker for non-invasive cancer diagnosis.
π¬ Key Highlights:
Scalability: Utilizes spin-coated MoSβ thin films for cost-effective, large-area fabrication.
Mechanism: Sensing is driven by ss-cfDNA adsorption, which induces n-doping and local dielectric changes, detectable via resonant frequency shifts.
Reusability: Features a novel cDNA-mediated regeneration strategy, allowing the sensor to be reused for over 5 cycles with high stability.
Specificity: Demonstrated high specificity for ssDNA (targeting AluSx1 cancer elements) over dsDNA.
A huge congratulations to the co-first authors, Seungchan Lee and Eunho Choi, for leading this outstanding work! This was a fantastic collaboration with Prof. Woojung Shin (KAIST) and Prof. Joohoon Kang (Yonsei Univ.).
π Read the full paper here: https://doi.org/10.1016/j.snb.2026.139540
[2025.12] Publication
[2025.12] Publication
We are excited to share our new paper in Advanced Functional Materials: "Thermally Robust Polymer-Based Analogue Switch for Flexible mmWave Application."
In partnership with Prof. Min-Ju Kim (Dankook University), our team has overcome the historic thermal limitations of organic materials. By leveraging iCVD-deposited pV3D3, we have engineered a flexible RF switch that delivers robust performance for next-generation mmWave applications.
Kudos to lead researchers Sungmoon and Changwoo for their outstanding work on this project!π₯³ππ
π Read the paper: http://doi.org/10.1002/adfm.202527948
[2025.11] Publication
[2025.11] Publication
Our new paper is out in ACS Applied Materials & Interfaces! π’
We developed a polarity engineering technique for MoTe2 to create homogeneous complementary circuits on a single flake. By combining molecular adsorption and e-beam irradiation, we successfully demonstrated high-gain inverters, NAND/NOR gates, and even reversible circuit function switching.
A massive well done to Seungchan for this outstanding research! π₯³ππ
π Link: http://doi.org/10.1021/acsami.5c13999
[2025.08] Scholarship News!
[2025.08] Scholarship News!
Awesome news! Dabin and Sungmoon won the Research Grant for Master's Students (μμ¬κ³Όμ μμ°κ΅¬μ₯λ €κΈ μ§μ). Congratulations to you both! π₯³ππ
[2025.06] Publication
[2025.06] Publication
Changwoo's research was accepted for an oral presentation (acceptance rate < 25%) at the 2025 Device Research Conference (DRC). Held at Duke University, DRC is the most prestigious and longest-running conference in the semiconductor device field. The abstract will be available soon, and more information can be found on the DRC 2025 website.
Congratulations Changwoo! π₯³ππ
π Link: https://ieeexplore.ieee.org/abstract/document/11105711
[2025.05] Publication
[2025.05] Publication
Our new paper on energy-efficient RF switches is now published in Advanced Science! We developed a VOx-based non-volatile switch that requires zero power to maintain its state, tackling a major hurdle for next-gen 5G/6G devices.
We demonstrated its potential by building a tunable RF filter, showcasing a new path for reconfigurable communication systems.
Huge congratulations to the amazing first authors, Dabin and Dahyeon, for leading this incredible work! π₯³ππ
π Link: http://doi.org/10.1002/advs.202501989
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[2024.06] IB Faculty Awards - Exemplary Lab in Management
[2024.06] IB Faculty Awards - Exemplary Lab in Management
Our laboratory was recognized as an Exemplary Lab in Management.π₯³ππ
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[2024.01] Publication
[2024.01] Publication
Thrilled to announce our review paper, "Emerging memory electronics for non-volatile radiofrequency switching technologies" is published in Nature Reviews Electrical Engineering!
Huge congratulations to the first author, Dahyeon, for leading this incredible achievement! π₯³ππ
[2023.12] Safety Laboratory of the Year
[2023.12] Safety Laboratory of the Year
Our laboratory was selected as the Safety Laboratory of the Year.
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Special thanks to Dahyeonπ₯³ππ
[2023.11] Undergraduate Research Award
[2023.11] Undergraduate Research Award
Many Congrats!! Changwoo & Seungchan π₯³ππ
[2022.06] MoS2 6G Switches (500 GHz, 100 Gb/s) in Nature Electronics
[2022.06] MoS2 6G Switches (500 GHz, 100 Gb/s) in Nature Electronics
Our latest work on non-volatile βzero-powerβ switches has been published in Nature Electronics.
These switches feature DC-500GHz bandwidth and can transmit data at 100Gb/s at ~300GHz. They can also be switched in less than a nanosecond. This performance meets/exceeds the IEEE 6G standardization target.
News Media coverage: Nature Electronics Research Briefing, UT-Austin Press Release, The Daily Texan, IEEE Media Coverage, UNIST NewsΒ
[2022.01] Prof. Kim has won the UT-Austin Ben Streetman PhD Senior Award 2020/2021 "For Outstanding Research by a Graduate Student in Electronic and Photonic Materials and Devices."
[2022.01] Prof. Kim has won the UT-Austin Ben Streetman PhD Senior Award 2020/2021 "For Outstanding Research by a Graduate Student in Electronic and Photonic Materials and Devices."
The University of Texas at Austin established the Ben Streetman Prize as a university-wide annual prize in 2001. It is presented to graduate students who are exceptional contributors to the area of electronic or photonic materials and devices. Students apply for this prize with the consent and recommendation of their advisors. Β
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