About
👋 Welcome
I am Yihao Hu, a physicist by training. I received my Ph.D. from Westlake University & Zhejiang University in 2025, where I worked with Prof. Shi Liu on multiscale simulations of ferroelectrics — training machine-learning force fields to watch how thousands of atoms move together, which led to finding a spiral of electric dipoles hidden in the most ordinary ferroelectric, PbTiO3.
I now work in quantitative investment in Hangzhou. Different subject, same instinct: model the whole system, and look for the signal in the noise.
🔬 Research Interests
📄 Publications
- Yihao Hu*, and Shi Liu*, "Double Helix of Atomic Displacements in Ferroelectric PbTiO3", Chin. Phys. Lett. 42, 120707 (2025) DOI
- Yonghao Yao, Hui Liu*, Yihao Hu, Kaustuv Datta, Jiagang Wu, Yuanpeng Zhang, Matthew G. Tucker, Shi Liu, Joerg C. Neuefeind, Shujun Zhang, and Jun Chen*, "Fluctuating local polarization: a generic fingerprint for enhanced piezoelectricity in Pb-based and Pb-free perovskite ferroelectrics", Nat. Commun. 16, 7442 (2025) DOI
- Ching-Che Lin, Yihao Hu, Jaegyu Kim, Djamila Lou, Ashwath Bhat, Pravin Kavle, Tae Yeon Kim, Chris Dames, Shi Liu*, and Lane W. Martin*, "Domain-wall enhanced pyroelectricity", Phys. Rev. X 15, 011063 (2025) DOI
- Hao Luo, Qi Liang, Anan Guo, Yimeng Yu, Haoyang Peng, Xiaoyi Gao, Yihao Hu, Xianli Su, Ctirad Uher, Yu Zheng, Dongwang Yang, Xiaolin Wang, Qingjie Zhang, Xinfeng Tang, Shi Liu, Gustaaf Van Tendeloo, Shujun Zhang* & Jinsong Wu*, "Current induced electromechanical strain in thin antipolar Ag2Se semiconductor", Nat. Commun. 16, 1818 (2025) DOI
- Yihao Hu, Jiyuan Yang, Shi Liu*, "Giant Piezoelectric Effects of Topological Structures in Stretched Ferroelectric Membranes", Phys. Rev. Lett. 133, 046802 (Editors' Suggestion) DOI
- Tingting Luo, Fanjie Xia, Quansheng Guo, Shi Liu*, Yihao Hu, Yaqiong Zhong, Junhao Qiu, Lin Liao, Wei Ji, Xianli Su, Jinsong Wu*, and Xinfeng Tang*, "Enhancing Thermoelectric Performance in Cubic CuCdInSe3 Compounds via Pressure-Induced Twin Boundary Engineering", ACS Appl. Energy Mater. 6, 24, 12379–12388 DOI
- Tingting Luo†, Yihao Hu†, Shi Liu, Fanjie Xia, Junhao Qiu, Haoyang Peng, Keke Liu, Quansheng Guo, XingZhong Li, Dongwang Yang, Xianli Su*, Jinsong Wu*, Xinfeng Tang*, "Entropy-driven structural transition from tetragonal to cubic phase: High thermoelectric performance of CuCdInSe3 compound", Mater. Today Phys. 37, 101211 DOI
- Changming Ke, Yihao Hu and Shi Liu*, "Depolarization Induced III-V Triatomic Layers with Tristable Polarization States", Nanoscale Horiz. 8, 616-623 DOI
- Jiawei Huang†, Yihao Hu†, and Shi Liu*, "Origin of ferroelectricity in magnesium doped zinc oxide", Phys. Rev. B 106, 144106 DOI
- Zijun Zhang†, Xing Chen†, Xiaoming Shi†, Yihao Hu, Jiawei Huang, Shi Liu, Zhaohui Ren, Houbing Huang, Gaorong Han, Gustaaf Van Tendeloo, Ze Zhang, He Tian*, "Morphotropic phase boundary in pure perovskite lead titanate at room temperature", Mater. Today Nano 20, 100275 DOI
- [Book] "电子材料计算", 刘仕 (Yihao Hu: 全局整合编写), 施建章, 彭仁赐, etc., 清华大学出版社, ISBN: 978-7-3026-7887-8
- [Book Chapter] "Multiscale simulations of ferroelectric oxides", Jiawei Huang, Zhuang Qian, Yihao Hu, Qisheng Yu and Shi Liu, Ferroelectrics: Advances in fundamental studies and emerging applications, ISBN: 978-0-7503-3975-9
Ferroelectric Topology
Dipole Spiral · Double Helix
铁电 PbTiO₃ 中的手性偶极双螺旋拓扑结构
Giant Piezoelectric
>320 pC/N
偶极螺旋的 d₃₃ 超过 320 pC/N，是同应变下单畴（≈80 pC/N）的四倍。第一性原理算得本征系数 e₃₃ ≈ 16 C/m²。机制是小角度偶极旋转，而非传统极化翻转。
Rotational Pseudo-Zero Mode
<1 meV/u.c.
N ≥ 3 且与四重势非公度时，能量与全局取向 φ₀ 无关，获得涌现 U(1) 对称性与类 Goldstone 旋转模；四重势的钉扎能不足 1 meV/u.c.。
Electric DM Interaction
⟨φ⟩ ≈ 29°
氧八面体的集体手性扭转产生电性类 DM 相互作用。Pb / Ti 两条子晶格极化链存在 29°（M₁）与 35°（M₂）的稳定非平行相位角。
Self-Moiré Crystal
1D superlattice
长周期势在单一均匀材料中自发涌现，形成一维本征超晶格，并重构价带边，产生多能谷电子拓扑。
🛠 Skills
🐍 Python3 (ASE, Pymatgen) ⚡ VASP · DFT calculations 🧠 Deep Potential · ML force fields 📊 LAMMPS · MD simulations 🤖 AI-assisted workflows
📰 News
🏆 Dragon Boat · 龙舟
第二届国际名校生态赛舟会 · 与傅园慧同船
2025 中国名校水上运动公开赛 · 哈佛、剑桥、清北等 40 余支队伍
2025 中国名校水上运动公开赛 · 哈佛、剑桥、清北等 40 余支队伍
🧗 Climbing · 攀岩
第十五届全国大学生攀岩锦标赛
甲A 男子速度赛 · 浙大攀岩队全国首秀
甲A 男子速度赛 · 浙大攀岩队全国首秀
📡 Media · 报道
从西湖博士毕业，他的下一站是基金公司
五年读博与螺旋铁电的发现 · 科研之外"专注地浪费时间"
五年读博与螺旋铁电的发现 · 科研之外"专注地浪费时间"
研究快讯 | 钛酸铅中的双螺旋极化结构
论文官方解读 · 双螺旋由电 Dzyaloshinskii–Moriya 相互作用稳定
论文官方解读 · 双螺旋由电 Dzyaloshinskii–Moriya 相互作用稳定
西湖大学团队发现新型螺旋铁电结构
温才妃、刘逸飞报道 · 应变诱导螺旋铁电，压电系数超 320 pC/N
温才妃、刘逸飞报道 · 应变诱导螺旋铁电，压电系数超 320 pC/N
🚀 Projects
🌐 Open Source
自建项目之外，我也向上游开源项目提交 PR / Issue —— 共 9 项，其中 3 项已被合并，2 项仍在评审中。
3 Merged 2 Open 4 Closed
✅ Merged · 已合并
docs: 补无 Docker 从源码运行指南，dev.sh 增加 --same-origin
补齐免 Docker 的源码运行文档，并为 dev.sh 增加同源模式，省去前后端分离调试时的跨域配置。
fix: Windows isPortInUse returns false for zombie-held ports causing infinite worker startup failures
修复 Windows 上端口被僵尸进程占用时探测误判为"未占用"，导致 worker 反复启动失败的问题。
fix: add DeepSeek V4/V3.2/R1 tokenizer mappings and context limits
补齐 DeepSeek V4 / V3.2 / R1 的 tokenizer 映射与上下文长度上限，使压缩前的 token 估算更准确。
⏳ Open · 评审中
Comments on arXiv:2609.11551 — Skyrmion nucleus resolves the Landauer paradox
就预印本中 skyrmion nucleus 与 Landauer 佯谬的论证展开的物理讨论。
feat: 新增份量等比缩放条，可等比例调整所有食材重量
为菜谱页加入份量等比缩放条，按用餐人数一键换算全部食材用量。
💬 Closed · 已关闭
Clipboard copy silently fails when outer terminal ignores OSC 52
定位外层终端忽略 OSC 52 时剪贴板复制静默失败的原因，经 16 轮讨论后修复关闭。
feat: add voice cloning support via GPT-SoVITS / Fish-Speech
接入自托管语音克隆；维护者致谢但未合并 —— 现有实现所需的兼容、部署与测试成本过高，后续或改为统一的 provider 设计。
[Feature] Can font size in sidebar be set? It looks a little small.
反馈侧栏字号偏小且不可调，被标记为 enhancement 后关闭。
help: 10.0.22000.318 for windows 11
咨询 Windows 11 新版本号适配；与既存 #1599 重复，确认后关闭。
🏔 Interests
🧗 Rock climbing 🎣 Fishing 🚣 Rowing 🍺 Drinking 😴 Sleeping