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SCIESCOPUS
A Monolithic Ferroelectric-Ionic Duality for Stochastic-Neuromorphic Core IntegrationGo to Link

Han, Changhyeon; Koo, Ryun Han; Song, Minsuk; Cho, Youngchan; Kang, Min-wook; Kim, Jangsaeng; Lee, Jongho; Shin, Wonjun; Kwon, Daewoong

ArticleIssue Date2026CitationADVANCED MATERIALS, v.38, no.12, pp 1 - 13PublisherWILEY-V C H VERLAG GMBH
SCIESCOPUS
A New Back-End-Of-Line Ferroelectric Field-Effect Transistor Platform via Laser ProcessingGo to Linkopen access

Kim, Sang Woo; Shin, Wonjun; Koo, Ryun-Han; Kim, Jangsaeng; Im, Jiseong; Koh, Dooyong; Lee, Jong-Ho; Cheema, Suraj S; Kwon, Daewoong

ArticleIssue Date2025CitationSMALL, v.21, no.15, pp 1 - 12PublisherWILEY-V C H VERLAG GMBH
SCIESCOPUS
A universal re-annealing method for enhancing endurance in hafnia ferroelectric memories: Insights from stochastic noise analysisGo to Link

Koo, Ryun-Han; Shin, Wonjun; Im, Jiseong; Ryu, Sangwoo; Kim, Seungwhan; Kim, Jangsaeng; Choi, Kangwook; Park, Sung-Ho; Ko, Jonghyun; Ji, Jongho, et al.

ArticleIssue Date2025CitationChaos, Solitons & Fractals, v.199, pp 1 - 8PublisherPergamon Press Ltd.
SCIESCOPUS
All-Ferroelectric Spiking Neural Networks via Morphotropic Phase Boundary Neuronsopen access

Kim, Jangsaeng; Park, Eun Chan; Shin, Wonjun; Koo, Ryun-Han; Im, Jiseong; Han, Chang-Hyeon; Lee, Jong-Ho; Kwon, Daewoong

ArticleIssue Date2024CitationADVANCED SCIENCE, v.11, no.44, pp 1 - 14PublisherWILEY
SCIESCOPUS
Analog reservoir computing via ferroelectric mixed phase boundary transistorsGo to Linkopen access

Kim, Jangsaeng; Park, Eun Chan; Shin, Wonjun; Koo, Ryun-Han; Han, Chang-Hyeon; Kang, He Young; Yang, Tae Gyu; Goh, Youngin; Lee, Kilho; Ha, Daewon, et al.

ArticleIssue Date2024CitationNATURE COMMUNICATIONS, v.15, no.1, pp 1 - 14PublisherNATURE PORTFOLIO
SCIESCOPUS
Effects of Charge Imbalance on Field-Induced Instability of HfO2-Based Ferroelectric Tunnel JunctionsGo to Linkopen access

Shin, Wonjun; Han, Chang-Hyeon; Kim, Jangsaeng; Koo, Ryun-Han; Min, Kyung Kyu; Kwon, Daewoong

ArticleIssue Date2025CitationAdvanced Electronic Materials, v.11, no.2, pp 1 - 9PublisherJohn Wiley and Sons Inc
SCIESCOPUS
Ferroelectric NAND for efficient hardware bayesian neural networksGo to Linkopen access

Song, Minsuk; Koo, Ryun-Han; Kim, Jangsaeng; Han, Chang-Hyeon; Yim, Jiyong; Ko, Jonghyun; Yoo, Sijung; Choe, Duk-hyun; Kim, Sangwook; Shin, Wonjun, et al.

ArticleIssue Date2025CitationNature Communications, v.16, no.1, pp 1 - 14PublisherNature Publishing Group
SCOPUS
First demonstration of federated learning with homomorphic encryption using vertically-stacked ferroelectric tunnel junctionGo to Link

Kim, Jeong-Han; Im, Jiseong; Song, Minsuk; Yoo, Yelin; Lee, Jongwoo; Koo, Ryun-Han; Kim, Jangsaeng; Kwon, Daewoong

ArticleIssue Date2026Citation2025 IEEE International Electron Devices Meeting (IEDM), pp 1 - 4PublisherIEEE
SCOPUS
First Hardware Demonstration of Fully Integrated Hafnia-based Multimodal Neuromorphic Computing PlatformGo to Link

Park, Eun Chan; Song, Minsuk; Kim, Jangsaeng; Lee, Jongwoo; Koo, Ryun-Han; Im, Jiseong; Shin, Wonjun; Kwon, Daewoong

ArticleIssue Date2026Citation2025 IEEE International Electron Devices Meeting (IEDM), pp 1 - 4PublisherInstitute of Electrical and Electronics Engineers Inc.
SCIESCOPUS
Hafnia-based ferroelectric computer vision system with artificial synaptic arrayGo to Link

Park, Eun Chan; Kim, Jangsaeng; Ko, Jonghyun; Shin, Wonjun; Nguyen, Manh-Cuong; Song, Minsuk; Kwon, Ki-Ryun; Koo, Ryun-Han; Kwon, Daewoong

ArticleIssue Date2025CitationNano Energy, v.139, pp 1 - 13PublisherElsevier BV
SCIESCOPUS
In Materia Shaping of Randomness with a Standard Complementary Metal-Oxide-Semiconductor Transistor for Task-Adaptive Entropy GenerationGo to Linkopen access

Kwak, Been; Koo, Ryun-Han; Cho, Youngchan; Han, Changhyeon; Kim, Dongbin; Jeong, Soi; Shin, Yunho; Choi, Joonhyeok; Im, Jiseong; Ko, Jonghyun, et al.

ArticleIssue Date2026CitationADVANCED FUNCTIONAL MATERIALS, v.36, no.23, pp 1 - 14PublisherWILEY-V C H VERLAG GMBH
SCIESCOPUS
Interface percolation and random trap generation in ferroelectric memory: A two-step degradation mechanism explored through low-frequency noise spectroscopyGo to Link

Koo, Ryun-Han; Shin, Wonjun; Im, Jiseong; Kim, Seungwhan; Ryu, Sangwoo; Jung, Gyuweon; Kim, Jangsaeng; Park, Sung-Ho; Choi, Kangwook; Ko, Jonghyun, et al.

ArticleIssue Date2025CitationChaos, Solitons & Fractals, v.199, pp 1 - 10PublisherPergamon Press Ltd.
SCIESCOPUS
Low-Frequency Noise Characteristics of Recessed Channel Ferroelectric Field-Effect TransistorsGo to Link

Kwak, Been; Kim, Jangsaeng; Lee, Kitae; Shin, Wonjun; Kwon, Daewoong

ArticleIssue Date2024CitationIEEE Electron Device Letters, v.45, no.11, pp 2118 - 2121PublisherInstitute of Electrical and Electronics Engineers
SCIESCOPUS
Low-Frequency Noise Spectroscopy for Navigating Geometrically Varying Strain Effects in HfO2 Ferroelectric FETsGo to Linkopen access

Koo, Ryun-Han; Shin, Wonjun; Kim, Sangwoo; Kim, Jangsaeng; Kwak, Been; Im, Jiseong; Kim, Hyunwoo; Kwon, Deok-Hwang; Cheema, Suraj S.; Lee, Jong-Ho, et al.

ArticleIssue Date2025CitationAdvanced Science, v.12, no.23, pp 1 - 12PublisherWiley-VCH Verlag
SCIESCOPUSKCI
Physical correlation between stochasticity and process-induced damage in ferroelectric memory devicesGo to Linkopen access

Koo, Ryun-Han; Kim, Seungwhan; Im, Jiseong; Ryu, Sangwoo; Choi, Kangwook; Park, Sung-Ho; Ko, Jonghyun; Ji, Jongho; Oh, Mingyun; Kim, Jangsaeng, et al.

ArticleIssue Date2025CitationNano Convergence, v.12, no.1, pp 1 - 15PublisherSpringer | Korea Nano Technology Research Society
SCIESCOPUS
Physical Reservoir Computing System via Hybrid Ferroelectric-Ionic TransistorsGo to Link

Koo, Ryun-Han; Han, Changhyeon; Yim, Jiyong; Im, Jiseong; Cho, Youngchan; Lee, Jong-Ho; Cheema, Suraj S.; Kim, Jangsaeng; Shin, Wonjun; Kwon, Daewoong

ArticleIssue Date2026CitationADVANCED MATERIALS, v.38, no.2, pp 1 - 12PublisherWILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
SCIESCOPUS
Polarization Pruning: Reliability Enhancement of Hafnia-Based Ferroelectric Devices for Memory and Neuromorphic ComputingGo to Linkopen access

Koo, Ryun-Han; Shin, Wonjun; Kim, Jangsaeng; Yim, Jiyong; Ko, Jonghyun; Jung, Gyuweon; Im, Jiseong; Park, Sung-Ho; Kim, Jae-Joon; Cheema, Suraj S, et al.

ArticleIssue Date2024CitationAdvanced Science, v.11, no.43, pp 1 - 13PublisherWiley-VCH Verlag
SCIESCOPUS
Strain-Stress Impact on Ferroelectric Devices: A Multilayer Analysis and Optimization Strategy for Neural Networks

Koo, Ryun-Han; Shin, Wonjun; Jung, Gyuweon; Kim, Jangsaeng; Lee, Sung-Tae; Im, Jiseong; Park, Sung-Ho; Ko, Jonghyun; Kwon, Daewoong; Lee, Jong-Ho

ArticleIssue Date2024CitationACS Materials Letters, v.6, no.11, pp 5170 - 5178PublisherAMER CHEMICAL SOC
SCIESCOPUS
Toward Optimized In-Memory Reinforcement Learning: Leveraging 1/f Noise of Synaptic Ferroelectric Field-Effect-Transistors for Efficient ExplorationGo to Linkopen access

Kim, Jangsaeng; Shin, Wonjun; Yim, Jiyong; Kwon, Dongseok; Kwon, Daewoong; Lee, Jong-Ho

ArticleIssue Date2024CitationAdvanced Intelligent Systems, v.6, no.6, pp 1 - 14PublisherWiley
SCIESCOPUS
Tunable Switching Mechanisms in HfZrO2-Based Tunnel Junctions for High-Performance Synaptic ArraysGo to Linkopen access

You, Jiwon; Kim, Jeong-Han; Song, Minsuk; Kwak, Been; Park, Eun Chan; Nguyen, Manh-Cuong; Shin, Wonjun; Kim, Jangsaeng; Kwon, Daewoong

ArticleIssue Date2026CitationADVANCED SCIENCE, v.13, no.18, pp 1 - 17PublisherWILEY
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