I’m currently a PhD student in the School of Integrated Circuits, Peking University, under the supervision of Prof. Ru Huang. I am also privileged to be advised by Prof. Qianqian Huang and Prof. Meng Li. My research interests lie on emerging device-based memories, in-memory computing and searching circuits and architectures, and algorithm-hardware co-design for AI acceleration.

📖 Educations

• 2021.09 - Present, PhD student in Microelectronics and Solid-State Electronics, Schoole of Integrated Circuits, Peking University. GPA: 3.97/4.00
• 2017.09 - 2021.06, Bachelor of Science in Microelectronics Science and Engineering, College of Electronic Information and 0ptical Engineerings, Nankai University. GPA: 94.51/100, Rank: 1/51

🎖 Honors and Awards

• 2024 China Association for Science and Technology (CAST) Young Talent Support Program (PhD Special Project)
• 2024 China National Scholarship (Top 1 in School of Integrated Circuits, Peking University)
• 2024 PKU Academic Innovation Award (The Only Recipient in School of Integrated Circuits, PKU)

• 2024 PKU Pacemaker to Merit Student (Top 1 in School of Integrated Circuits, Peking University)

• 2020 China National Scholarship (Top 1 in College of Electronic Information and 0ptical Engineerings, NKU)
• 2020 Second Prize in the National Undergraduate Electronics Design Contest ‘TI Cup’ Analog Electronic System Design Invitational Competition –2020 First Prize in the Tianjin College Student Electronics Design Competition (First place)
• 2020 Tianjin College Student of the Year (Top 1 in NKU)

• 2020 Zhou Enlai Scholarship (Top 1 in NKU)

• 2019 China National Scholarship (Top 1 in College of Electronic Information and 0ptical Engineerings, NKU)
• 2019 Second Prize in the National Undergraduate Electronics Design Contest (First Place in the Tianjin Division)

• 2019 First Prize in the Tianjin College Student Physics Competition

• 2018 China National Scholarship (Top 1 in College of Electronic Information and 0ptical Engineerings, NKU)

🔥 News

• 2025.03: 🏆 I received the Best Paper Award of EDTM 2025.
• 2025.03: 🏆 I was selected for the 2024 China Association for Science and Technology (CAST) Young Talent Support Program (PhD Special Project).
• 2025.02: 🎉 One paper has been accepted by 2025 ACM/IEEE Design Automation Conference (DAC).
• 2025.01: 🎉 One paper has been accepted by 2025 IEEE Electron Devices Technology and Manufacturing Conference (EDTM).
• 2024.11: 🎉 One paper has been accepted by 2025 Design, Automation & Test in Europe Conference & Exhibition (DATE).
• 2024.09: 🎉 Two papers have been accepted by 2024 IEEE International Electron Devices Meeting (IEDM).
• 2024.05: 🎉 One paper has been accepted by 2024 IEEE European Solid-State Electronics Research Conference (ESSERC).
• 2024.05: 🎉 One paper has been accepted in IEEE Electron Device Letters.
• 2024.02: 🎉 One paper has been accepted by 2024 ACM/IEEE Design Automation Conference (DAC).
• 2024.01: 🎉 Two papers have been accepted by 2024 IEEE Electron Devices Technology and Manufacturing Conference (EDTM).
• 2023.11: 🎉 One paper has been accepted in IEEE Electron Device Letters.
• 2023.04: 🎉 One paper has been accepted by 2023 Silicon Nanoelectronics Workshop (SNW).
• 2023.02: 🎉 One collaborative paper has been accepted by 2023 China Semiconductor Technology International Conference (CSTIC).
• 2023.01: 🎉 One paper has been accepted by 2023 IEEE Electron Devices Technology and Manufacturing Conference (EDTM).
• 2023.01: 🎉 One paper has been accepted in Solid-State Electronics.
• 2022.09: 🎉 Two collaborative papers have been accepted by IEEE International Electron Devices Meeting (IEDM) 2023.
• 2022.06: 🏆 I received the Best Student Award (1st Prize) of CSTIC 2022.
• 2022.05: 🎉 One paper has been accepted by 2022 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits).
• 2021.11: 🎉 One paper has been accepted by 2022 China Semiconductor Technology International Conference (CSTIC).
• 2021.09: 🎉 One collaborative paper has been accepted by 2022 IEEE International Electron Devices Meeting (IEDM).

📝 Publications

First-author papers (Conference)

DAC 2025

UniCAIM: A Unified CAM/CIM Architecture with Static-Dynamic KV Cache Pruning for Efficient Long-Context LLM Inference

Weikai Xu^#, Wenxuan Zeng^#, Qianqian Huang, Meng Li, Ru Huang

ACM/IEEE Design Automation Conference (DAC), San Francisco, CA, USA, 2025.

DATE 2025

Compact Non-Volatile Lookup Table Architecture based on Ferroelectric FET Array through In-Situ Combinatorial One-Hot Encoding for Reconfigurable Computing

Weikai Xu, Meng Li, Qianqian Huang, Ru Huang

Design, Automation & Test in Europe Conference & Exhibition (DATE), Lyon, France, 2025.

EDTM 2025

A Novel FeFET-based Multibit Content Addressable Memory through Thermometer Encoding for Manhattan Distance Metric with High Area- and Energy-Efficiency

Weikai Xu^#, Zeyu Zhang^#, Qianqian Huang, Ru Huang

IEEE Electron Devices Technology & Manufacturing Conference (EDTM), Hong Kong, China, 2025.

IEDM 2024

Novel Ferroelectric-Based Ising Machine Featuring Reconfigurable Arbitrary Ising Graph and Controllable Annealing Through Device-Algorithm Co-Optimization

Weikai Xu, Jin Luo, Zhiyuan Fu, Runze Han, Shengyu Bao, Kaifeng Wang, Qianqian Huang, Ru Huang

IEEE International Electron Devices Meeting (IEDM), San Francisco, CA, USA, 2024.

DAC 2024

Compact and Efficient CAM Architecture through Combinatorial Encoding and Self-Terminating Searching for In-Memory-Searching Accelerator

Weikai Xu, Jin Luo, Qianqian Huang, Ru Huang

ACM/IEEE Design Automation Conference (DAC), San Francisco, CA, USA, 2024.

ESSERC 2024

A Novel Ferroelectric FET based Multibit Content Addressable Memory with Dynamic and Static Modes for Energy-Efficient Training and Inference

Weikai Xu, Jin Luo, Boyi Fu, Zerui Chen, Zhiyuan Fu, Kaifeng Wang, Qianqian Huang, Ru Huang

IEEE European Solid-State Electronics Research Conference (ESSERC), Bruges, Belgium, 2024.

EDTM 2024

A Novel Small-Signal Ferroelectric Memcapacitor based Capacitive Computing-In-Memory for Area-and Energy-Efficient Quantized Neural Networks

Weikai Xu, Jin Luo, Boyi Fu, Zhiyuan Fu, Kaifeng Wang, Chang Su, Qianqian Huang, Ru Huang

IEEE Electron Devices Technology & Manufacturing Conference (EDTM), Bangalore, India, 2024.

EDTM 2024

A Novel Complementary Ferroelectric FET based Compressed Multibit Content Addressable Memory with High Area-and Energy-Efficiency

Weikai Xu, Jin Luo, Zhiyuan Fu, Kaifeng Wang, Qianqian Huang, Ru Huang

IEEE Electron Devices Technology & Manufacturing Conference (EDTM), Bangalore, India, 2024.

EDTM 2023

A Novel Pulse-Width-Modulated FeFET-based Analog Content Addressable Memory with High Area-and Energy-Efficiency

Weikai Xu, Jin Luo, Qianqian Huang, Ru Huang

IEEE Electron Devices Technology & Manufacturing Conference (EDTM), Seoul, Republic of Korea, 2023.

SNW 2023

A Novel Ferroelectric Tunnel FET-based Time-Domain Content Addressable Memory with High Distance-Metric Linearity and Energy Efficiency for Edge Machine Learning

Weikai Xu, Jin Luo, Qianqian Huang, Ru Huang

Silicon Nanoelectronics Workshop (SNW), Kyoto, Japan, 2023.

CSTIC 2022

Novel Negative-Feedback Method for Writing Variation Suppression in FeFET-Based Computing-in-Memory Macro

Weikai Xu, Jin Luo, Yide Du, Qianqian Huang, Ru Huang

China Semiconductor Technology International Conference (CSTIC), Shanghai, China, 2022.

VLSI 2022

A novel ambipolar ferroelectric tunnel FinFET based content addressable memory with ultra-low hardware cost and high energy efficiency for machine learning

Jin Luo^#, Weikai Xu^#, Boyi Fu, Zheru Yu, Mengxuan Yang, Yiqing Li, Qianqian Huang, Ru Huang

IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits), Honolulu, HI, USA, 2022.

First-author papers (Journal)

EDL

A Novel Ferroelectric FET based Universal Content Addressable Memory with Reconfigurability for Area-and Energy-Efficient In-Memory-Searching System

Weikai Xu, Jin Luo, Zerui Chen, Boyi Fu, Zhiyuan Fu, Kaifeng Wang, Qianqian Huang, Ru Huang

IEEE Electron Device Letters, 2024.

EDL

A Novel Small-Signal Ferroelectric Capacitance based Content Addressable Memory for Area-and Energy-Efficient Lifelong Learning

Weikai Xu^#, Zhiyuan Fu^#, Kaifeng Wang, Chang Su, Jin Luo, Zerui Chen, Qianqian Huang, Ru Huang

IEEE Electron Device Letters, 2023.

Collaborative papers

-Experimental Demonstration of Resonant Adiabatic Writing and Computing in Ferroelectric Capacitive Memory Array for Energy-Efficient Edge AI. Jin Luo, Bingrui Song, Yuxin Lin, Zhiyuan Fu, Boyi Fu, Weikai Xu, Linxiao Shen, Yuan Wang, Qianqian Huang, Ru Huang. IEEE International Electron Devices Meeting (IEDM), 2024.

-New insights into the effect of spatially distributed polarization in ferroelectric FET on content addressable memory operation for machine learning applications. Chang Su, Weikai Xu, Lining Zhang, Ru Huang, Qianqian Huang. Solid-State Electronics, 2023.

-Design of Ferroelectric FET-Based Capacitive-Coupling Computing-In-Memory For Binary Neural Networks. Boyi Fu, Jin Luo, Weikai Xu, Qianqian Huang, Ru Huang. China Semiconductor Technology International Conference (CSTIC), 2023.

-Novel ferroelectric tunnel FinFET based encryption-embedded computing-in-memory for secure AI with high area-and energy-efficiency. Jin Luo, Hanyong Shao, Boyi Fu, Zhiyuan Fu, Weikai Xu, Kaifeng Wang, Mengxuan Yang, Yiqing Li, Xiao Lv, Qianqian Huang, Ru Huang. IEEE International Electron Devices Meeting (IEDM), 2022.

-Novel energy-efficient hafnia-based ferroelectric processing-in-sensor with in-situ motion detection and four-quarter mutipilcation. Zhiyuan Fu, Kaifeng Wang, Boyi Fu, Shaodi Xu, Hao Zheng, Jin Luo, Chang Su, Weikai Xu, Xiao Lv, Qianqian Huang, Ru Huang. IEEE International Electron Devices Meeting (IEDM), 2022.

-Energy-and area-efficient Fe-FinFET-based time-domain mixed-signal computing in memory for edge machine learning. Jin Luo, Weikai Xu, Yide Du, Boyi Fu, Jiahao Song, Zhiyuan Fu, Mengxuan Yang, Yiqing Li, Le Ye, Qianqian Huang, Ru Huang. IEEE International Electron Devices Meeting (IEDM), 2021.

Patents

• Method for Implementing Content-Addressable Memory Based on Ambipolar FET (US18715959). Ru Huang, Weikai XU, Jin Luo, Qianqian Huang. US Patent, 2024.
• 基于铁电场效应晶体管的非易失性查找表架构 (CN118466689A). 黄如; 徐伟凯; 黄芊芊. China Patent, 2024.
• 一种基于温度计编码内容可寻址存储器实现曼哈顿距离度量的方法 (CN118395202A). 黄如; 徐伟凯; 黄芊芊. China Patent, 2024.
• 一种可配置连接的尹辛机求解器 (CN118380025A). 黄如; 徐伟凯; 黄芊芊. China Patent, 2024.
• 基于铁电场效应晶体管可编程反相器的施密特触发器 (CN118335141A). 黄如; 徐伟凯; 黄芊芊. China Patent, 2024.
• 基于铁电场效应晶体管的非易失性静态随机存取存储器 (CN118298871A). 黄如; 徐伟凯; 黄芊芊. China Patent, 2024.
• 一种实现静态和动态多值内容可寻址存储器的方法 (CN117373511A). 黄如; 徐伟凯; 黄芊芊. Patent, 2024.
• 一种时间域内容可寻址存储器及其应用 (CN116612792A). 黄如; 徐伟凯; 黄芊芊. China Patent, 2023.
• 基于N型和P型铁电场效应晶体管实现通用内容可寻址存储器的方法 (CN116580733A). 黄芊芊; 徐伟凯; 黄如. China Patent, 2023.
• 一种内容可寻址存储器的组合编码方法 (CN116501261A). 黄如; 徐伟凯; 黄芊芊. China Patent, 2023.
• 基于脉冲宽度调制铁电场效应晶体管实现模拟和多值内容可寻址存储器的方法 (CN116110450A). 黄如; 徐伟凯; 黄芊芊. China Patent, 2023.
• 基于非破坏性读出的小信号铁电电容实现存内计算的方法 (CN115565574A). 黄如; 徐伟凯; 符芷源; 黄芊芊. China Patent, 2023.
• 基于具有双极特性场效应晶体管实现内容可寻址存储器的方法 (CN115472194A). 黄如; 徐伟凯; 罗金; 黄芊芊. China Patent, 2022.
• 基于铁电隧穿场效应晶体管FeTFET实现多值内容可寻址存储器MCAM的方法 (CN114758695A). 黄如; 徐伟凯; 罗金; 黄芊芊. China Patent, 2022.
• 基于铁电隧穿场效应晶体管FeTFET实现三态内容可寻址存储器TCAM的方法 (CN114743578A). 黄如; 徐伟凯; 罗金; 黄芊芊. China Patent, 2022.
• 一种抑制铁电晶体管FeFET写涨落的方法 (CN114093397A). 黄如; 罗金; 徐伟凯; 黄芊芊. China Patent, 2022.
• 一种基于铁电晶体管的延时调制方法 (CN113903378A). 黄如; 罗金; 徐伟凯; 黄芊芊. China Patent, 2022.

💻 Internships

• 2024.02 - 2024.05, SOPHGO, China.