Public Research Seminar - Exploration of Exotic Surface States in Correlated Delafossite Oxides PdCrO2
Abstract Delafossite oxides (ABO2) provide a unique platform for studying the interplay between itinerant electrons and strongly correlated quasiparticles, often yielding exotic surface states. Here, I present recent scanning tunnelling microscopy (STM) studies on the surface of PdCrO2, a bulk Mott-insulating antiferromagnet, revealing three distinct physical phenomena. First, on the CrO2-terminated surface, we identify an unexpected charge-insulating state with short-range charge order [1]. This arises from surface hole doping inducing charge disproportionation, which splits the...
Public Research Seminar - Error Correction and Quantum Thermodynamics: A Full-Stack Route for Useful Superconducting Quantum Experiments
Abstract Quantum computing is moving beyond demonstrations of individual devices toward systems in which logical operations and scientific results can be verified. This transition requires more than increasing the qubit count: hardware architecture, calibration, error correction, algorithms, and physical interpretation must be designed together. This seminar will present recent work on superconducting quantum processors from this full-stack perspective. It will first discuss tunable-coupler architectures and semi-automated calibration, which separate idle protection from fast entangling interactions...
Public Research Seminar - Automatic Code Generation for Electron Repulsion Integrals and Electron Correlation
Abstract Molecular integral calculation is the core bottleneck of ab initio electronic structure simulations. This work systematically optimizes Gaussian-type orbital (GTO) integral evaluation via vertical recurrence relations (VRR, including Dupuis-Rys-King (DRK) and Obara-Saika (OS)) and horizontal recurrence relations (HRR). We identify inherent redundant intermediate terms in OS-VRR computation graphs, while DRK’s compact two-index recurrence avoids such redundancy. A backtracking search strategy is proposed to build optimal computing graphs for all integral types and eliminate unused...
Public Research Seminar - Anomalous Ion Transport in Angstrom-scale Two-dimensional Channels
Abstract Molecules and ions exhibit strikingly different structures and properties under strong confinement than their bulk counterparts. These differences become particularly pronounced when the confinement is reduced to the angstrom scale, which is comparable to the characteristic size of ions and molecules. The emerging frontier of two-dimensional (2D) nanofluidics has opened unprecedented opportunities for probing mass transport in this regime. This talk will present anomalous ion transport observed in angstrom-scale 2D channels, highlighting the critical...
Public Research Seminar - 超临界流体发泡聚合物的制备与功能化应用
Abstract丨摘要 聚合物发泡材料具有轻质，隔热，高吸能等特点，被广泛应用于鞋材、车辆、包装、减震等领域。但发泡材料在前沿功能化领域的应用目前较少。主要受限于发泡材料结构与材料体系的单一性，难以实现优异的功能化性能。本报告总结了米皓阳教授在基于超临界流体发泡技术的聚合物多孔材料成型、结构性能调控与功能化应用的近期研究，介绍了团队开发的几种超临界流体发泡新方法及泡孔多尺度结构调控技术，及其在缓冲吸能泡沫、摩擦纳米发电、柔性传感、电磁屏蔽等领域的应用。 About the speaker丨报告人简介 米皓阳，郑州大学 米皓阳，教授，博士生导师，2010年和2015年于华南理工大学获得学士和博士学位，2016-2018年在美国威斯康星大学麦迪逊分校进行国际交流博士后研究，后在香港理工大学担任研究员，于2019年入职郑州大学，橡塑模具国家工程研究中心，2024年获教授职称。先后主持国家自然科学基金3项，省部级项目多项，获河南省优青项目，承担横向项目十余项。长期从事聚合物成型加工，聚合物发泡材料与多孔材料的制备、结构调控与功能化方面研究。发表SCI期刊论文200余篇，第一及通讯作者135篇，被引1万余次；授权发明专利24件；出版专著两部。
华中师范大学彭云辉副研究员到访先进材料学域，并作《核小体动力学性质及相互作用研究》学术报告
华中师范大学彭云辉副研究员（左）、先进材料学域楚夏昆助理教授（右）