直播时间：2025年7月15日（周二）20:00-22:00

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北京时间7月15日晚八点，iCANX Youth Talks第106期邀请到了空天信息大学（筹）电子与集成电路学院副教授凌昊天、空天信息大学（筹）电子与集成电路学院讲师马文龙、齐鲁空天信息研究院博士后陈娇担任主讲，电子科技大学集成电路科学与工程学院教授张晓升担任研讨嘉宾，中国科学院空天信息创新研究院传感器技术国家重点实验室研究员邹旭东担任主持人，期待你一起加入这场知识盛宴。

【嘉宾介绍】

凌昊天

空天信息大学（筹）

基于柔性薄膜的电学可重构太赫兹超表面研究

【Abstract】

Electrically reconfigurable metasurfaces comprise two-dimensional arrays of subwavelength “meta-atoms” integrated with electrically tunable materials or devices. They enable active and real-time modulation of electromagnetic wave propagation characteristics, such as amplitude, frequency, and phase, significantly reducing hardware complexity, cost, and power consumption. Compared to microwave metasurfaces, terahertz metasurfaces have advantages such as greater data capacity and enhanced sensing resolution at equivalent apertures, positioning them as an inevitable trend of 6G communications. However, current electrically reconfigurable metasurfaces struggle to meet the demands of terahertz communications for high frequencies, high integration density, low cost, and low power consumption. This presentation will detail research on reconfigurable terahertz metasurfaces based on flexible thin films of oxide semiconductors, graphene, and liquid crystal polymer (LCP) substrates. LCP substrates exhibit significant advantages over traditional substrates within the terahertz band, including flexibility, low dielectric constant, reduced electromagnetic losses, low water absorption, and minimal thickness. These properties effectively reduce dielectric losses for terahertz waves. Through the monolithic integration of patterned graphene and oxide semiconductors thin films onto LCP films, we have designed and fabricated a series of reconfigurable terahertz metasurfaces and their feed networks. This work introduces a novel flexible architecture for terahertz reconfigurable intelligent surfaces. It holds considerable importance for 6G applications, such as ultra-massive multiple-input multiple-output (MIMO) communications and integrated sensing and communications (ISAC).

电学可重构超表面由集成了电学可调材料或器件的二维亚波长超原子单元组成，可以动态实时调节振幅、频率、相位等电磁波传播特性，实现硬件复杂度、成本和能耗的大幅降低。与微波超表面相比，太赫兹超表面在相同口径下具有高感知分辨率和高数据容量等优势，是未来6G通信的必然趋势。但是，目前的电学可重构超表面很难满足太赫兹通信对高频、高集成度、低成本和低能耗的需求。本次报告将介绍基于氧化物半导体、石墨烯和液晶聚合物基板等柔性薄膜的可重构太赫兹超表面研究工作。液晶聚合物基板相对于传统衬底在太赫兹波段具有柔性、低介电常数、低电磁损耗、低吸水率和低厚度等优势，可以有效降低太赫兹波的介质损耗。通过在液晶聚合物薄膜上单片集成图形化石墨烯和氧化物半导体薄膜，我们设计制备了一系列可重构太赫兹超表面器件及其供电网络。本工作为太赫兹智能超表面提供了一种新型柔性架构，对超大规模多入多出通信、通信感知一体化等6G应用具有重要意义。

【BIOGRAPHY】

Dr. Haotian Ling is an Associate Professor at the School of Electronics and Integrated Circuits, Aerospace Information Technology University. He received the B.E. degree in Microelectronics Science and Engineering in 2015, and the Ph.D. degree in Microelectronics and Solid State Electronics in 2021, both from Shandong University, Jinan, China. He joined Qilu Aerospace Information Research Institute as an Assistant Professor in 2022-2024, and Associate Professor in 2024-2025. In 2025, he has been an Associate Professor in School of Electronics and Integrated Circuits, Aerospace Information Technology University. His research interests are millimeter wave/terahertz integrated circuits and electromagnetic technology for advanced radio systems such as aerospace information and 6G communication. He is the coauthor of more than 20 international papers in related fields, including Nanophotonics、Nano Letters、Sensors and Actuators B: Chemical、Scientific Reports, etc. He also holds 5 granted patents in China, the US, and Japan.

凌昊天博士是空天信息大学（筹）电子与集成电路学院副教授。2015年本科毕业于山东大学物理学院，2021年在山东大学微电子学院获获得工学博士学位。2022年入职齐鲁空天信息研究院任助理研究员，2024年晋升为副研究员，2025年入职空天信息大学（筹）电子与集成电路学院。主要研究方向为面向空天信息和6G通信等先进无线电系统的毫米波/太赫兹集成电路和电磁技术，迄今为止在相关领域发表高水平国际论文20余篇，包括在Nanophotonics、Nano Letters、Sensors and Actuators B: Chemical、Scientific Reports等；授权中国/美国/日本发明专利5项。

马文龙

空天信息大学（筹）

面向流体环境的摩擦电效应器件

【Abstract】

Fluid media are ubiquitous in both industrial and natural systems, ranging from pipeline transport to ocean waves, carrying abundant information and considerable kinetic energy. Efficient sensing of hydrodynamic states and harvesting of energy from fluid environments are critical for building intelligent systems, for example the Industrial Internet of Things and Marine Internet of Things. The triboelectric effect, a physical mechanism that directly converts mechanical energy into electrical energy, offers advantages of self-powering, structural flexibility, and strong adaptability, making it suitable for sensing and energy harvesting in complex flow scenarios. Focusing on flow parameter monitoring and environmental energy harvesting, we applied novel design strategy such as biomimicry to develop triboelectric devices with enhanced functionality and superior performance.

流体介质广泛存在于工业与自然系统中，从管道输送到海洋波浪，其既承载着丰富的信息，也蕴含可观的能量。对流体环境实现高效的状态感知与能量获取，是构建工业物联网、海洋物联网等智能系统的关键支撑。摩擦电效应作为一种可将机械能直接转化为电能的物理机制，具备自驱动、结构灵活、适应性强等优势，适用于复杂流动场景下的感知、采能。围绕“流动参数监测”与“环境能量采集”两类核心需求，我们引入仿生等设计理念，开发出功能更复杂、性能更优越的摩擦电效应器件。

【BIOGRAPHY】

Dr. Wenlong Ma is a lecturer at the School of Electronics and Integrated Circuits, Aerospace Information Technology University. He was selected as a Taishan Scholar Young Expert of Shandong Province. He received his bachelor’s, master’s, and doctoral degrees from China University of Petroleum (East China). During his PhD, he was jointly trained at the Functional Surfaces Laboratory, University of Leeds, UK. After graduation, he conducted postdoctoral research at the Institute of Oceanology, Chinese Academy of Sciences, during which he also studied triboelectric nanogenerator technologies at the Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences. His research focuses on triboelectric devices for fluid environments, industrial fluid monitoring, and related applications. He has published 17 papers, including 10 articles as first or corresponding author in international journals such as Nature Reviews Electrical Engineering, Advanced Energy Materials, Advanced Science, and Corrosion Science.

马文龙博士是空天信息大学（筹）电子与集成电路学院讲师，山东省泰山学者青年专家。本硕博就读于中国石油大学（华东），博士期间在英国利兹大学功能表面实验室进行联合培养。毕业后，于中国科学院海洋研究所从事博士后研究，期间在中国科学院北京纳米能源与系统研究所进行摩擦纳米发电机相关技术学习研究。研究方向包括面向流体环境的摩擦电效应器件、工业流体监测及应用，共发表论文17篇，其中以第一/通讯作者身份在Nature Reviews Electrical Engineering、Advanced Energy Materials、Advanced Science、Corrosion Science等国际期刊上发表10篇SCI论文。

陈娇

齐鲁空天信息研究院

亚十纳米 GaN 异质结多场耦合热管理新范式

【Abstract】

GaN-based chips, serving as core devices for high-power, high-frequency, and high-temperature applications, are currently facing severe challenges in performance improvement due to process miniaturization: aggravated short-channel effects, increased leakage current, and degraded electrostatic control capability. The physical origins of these issues stem from enhanced interface-phonon scattering caused by dimensional scaling, hindered heat dissipation due to multidimensional confinement effects in heterostructures, and the inadequacy of conventional thermal management approaches in addressing quantum heat transport characteristics at sub-10-nm scales near junctions. When device feature sizes break through the 10nm threshold, bandgap width and offset induce both phonon spectrum fluctuation characteristics at heterointerfaces and quantum localization effects, resulting in obstructed heat transport pathways. This electro-thermal coupling effect has become a critical bottleneck limiting device reliability and operational lifetime. In this presentation, we establish a multiscale computational framework (including molecular dynamics simulations for atomic-scale interfacial heat transport, first-principles calculations for phonon density of states, and phonon Boltzmann transport equation for nonequilibrium thermal modeling) to systematically investigate thermal-stress coupling mechanisms, interface regulation principles, and quantum thermal transport properties. The proposed phonon engineering strategy enables thermal conductivity enhancement and junction temperature gradient reduction. This theoretical framework can be further extended to emerging device systems such as ultra-wide bandgap semiconductors and two-dimensional material heterostructures, providing theoretical guidance for thermal management in GaN-based chips and related devices.

GaN基芯片作为高功率、高频、高温应用的核心器件，其性能提升正面临制程微缩带来的严峻挑战：短沟道效应加剧、漏电流攀升和静电控制能力退化。这些问题的物理根源在于尺寸缩小导致的界面-声子散射增强、异质结构多维约束效应阻碍热耗散，以及传统热管理方法难以应对近结区亚十纳米尺度下的量子热输运特性。当器件特征尺寸突破10nm阈值时，禁带宽度与带隙差异会诱发异质界面声子谱波动特性和量子局域化效应，导致热流输运路径受阻，这种热-电耦合效应已成为限制器件可靠性和寿命的关键瓶颈。本次报告通过建立多尺度计算框架（分子动力学模拟界面原子级热输运、第一性原理计算声子态密度、声子玻尔兹曼方程非平衡态热输运建模），系统揭示了热-应力耦合机制、界面调控规律和量子热输运特性，提出的声子工程策略可实现热导率提升、结温梯度下降，该理论框架还可扩展至超宽禁带半导体和二维材料异质结等新兴器件体系，为GaN基芯片等器件热管理提供理论指导。

【BIOGRAPHY】

Dr. Chen Jiao graduated with a bachelor's degree from Shandong University of Science and Technology in 2013. She obtained her master's degree in Power Engineering and her doctoral degree in Power Engineering and Engineering Thermophysics from the School of New Energy at China University of Petroleum (East China) in 2017 and 2025, respectively. She is currently engaged in postdoctoral research at the Shandong Aerospace Information Research Institute (2025–present). Her research focuses on GaN-based heterojunctions as a model system to systematically investigate the cross-scale coupling mechanisms of stress-phonon-interface multiphysical fields, with an emphasis on exploring the non-equilibrium transport behavior of thermal carriers and their control mechanisms in quantum confined environments. She has published more than 10 papers in SCI journals such as International Journal of Heat and Mass Transfer, International Journal of Thermal Sciences, Langmuir, Carbon, and Physical Chemistry Chemical Physics. Her main research achievements include establishing a multiphysical field coupling model for sub-ten-nanometer heterojunctions that integrates thermal, electrical, and mechanical fields, revealing the mechanisms by which quantum confinement effects influence the transport of thermal carriers, and proposing a new method for controlling interfacial thermal resistance based on phonon engineering. Her current research is further expanding into the field of thermal reliability optimization for wide-bandgap semiconductor devices.

陈娇博士2013年本科毕业于山东科技大学，2017年和2025年在中国石油大学（华东）新能源学院分别获得动力工程专业硕士学位和动力工程及工程热物理专业博士学位，现于齐鲁空天信息研究院从事博士后研究工作。其研究以GaN基异质结为模型体系，系统开展应力-声子-界面多场耦合的跨尺度机制研究，重点探索量子限域环境下热载流子的非平衡输运行为及其调控规律。目前已在International Journal of Heat and Mass Transfer、International Journal of Thermal Sciences、Langmuir、Carbon、Physical Chemistry Chemical Physics等SCI期刊发表论文10余篇，主要研究成果包括：建立亚十纳米异质结热-电-力多物理场耦合模型，揭示量子限域效应对热载流子输运的影响机制，提出基于声子工程的界面热阻调控新方法。当前研究正进一步拓展至宽禁带半导体器件的热可靠性优化领域。