北京时间11月27日晚8点，iCANX Talks第33聚焦“硬科技·液态金属”，邀请了南方科技大学的蒋兴宇教授和中国科学院理化技术研究所的饶伟教授带来精彩分享：蒋兴宇教授将给大家介绍液态金属-弹性聚合物微流控与柔性生物电子的最新进展。饶伟教授将为大家带来柔性液态金属材料的相关硬科技。
在前32期的iCANXTalks直播中，每一期都吸引了全球三十余万人观看直播，累计收看观众已经近千万人次，受到了国内外专家学者的普遍好评和追捧，目前，iCANX Talks已经成为极具国际影响力的高科技云端学术峰会。
话不多说，先让小艾给大家详细介绍两位重磅嘉宾及演讲内容吧！
Talk 1
Liquid Metal-based Microfluidics for Stretchable Bioelectronics
Xingyu Jiang 蒋兴宇
the Southern University of Science and Technology 南方科技大学
【Abstract】Our interest in making stretchable bioelectronics stems from our work in microfluidic chips that allow many biomedical functions, such as diagnosis, screening/synthesis of therapeutics, as well as tissue engineering. Integrating liquid metal and elastic polymer-based microfluidic chips into stretchable electronic circuits, we find that these stretchable circuits can dramatically expand the capability of micro-/nano-scale structures in a variety of biomedical applications, such as biomedical sensing, tissue engineering, drug discovery and biological computing. For example, a fully stretchable blood oxygen sensor and a fully stretchable sweat detection device can be prepared by using liquid metal elastic polymer microfluidic devices. These new materials can also be used to prepare healable electronic blood vessels and vascular stents that allow gene therapy on targeted live tissues.
微流控是一个重要的新一代生物医学技术，在疾病诊断、治疗等领域越来越发挥重大作用。把液态金属和用弹性高分子微流控芯片整合成柔性电子电路后，我们发现这些柔性电子电路可以在生物医学传感、组织工程、人用器官以及生物计算领域发挥非常大的作用。例如，使用液态金属-弹性高分子微流控可以制备全柔性血氧传感器、全柔性的汗液检测装置。还可以用这些新材料制备具有修复功能的电子血管和功能强大的血管支架来进行靶向基因治疗。
【Biography】Xingyu Jiang is a Chair Professor at the Southern University of Science and Technology, Shenzhen, China. He obtained his BS at the University of Chicago (1999) and PhD at Harvard University (Chemistry, 2004). In 2005, he joined the National Center for NanoScience and Technology/the University of the Chinese Academy of Sciences. He moved to the Southern University of Science and Technology in 2018. His research interests include microfluidics and nanomedicine. He was awarded the “Hundred Talents Plan” of the Chinese Academy of Sciences, the National Science Foundation of China’s Distinguished Young Scholars Award, the Scopus Young Researcher Gold Award, the Human Frontier Science Program Young Investigator Award. He is a Fellow of the Royal Society of Chemistry (UK) and American Institute of Medical and Biological Engineering. He has published over 300 peer-reviewed papers.
蒋兴宇 教授 博士生 导师 南方科技大学，1999年获得美国芝加哥大学化学学士，2004年于美国哈佛大学化学系取得博士学位，师从美国两院院士George Whitesides教授。2005年开始任职于国家纳米科学中心、中国科学院大学。2018年开始任南方科技大学讲席教授。蒋兴宇研究员2010年获 “国家杰出青年科学基金”， 还获中组部“万人计划”拔尖青年、国务院政府特殊津贴、科技部“创新人才推进计划”、科技部重点研发计划（任首席科学家）、基金委重点项目、腾讯“科学探索奖”、中国化学会青年化学奖等。现在是美国医学与生物工程学会(AIBME)与英国皇家化学会(RSC)会士。发表论文超过300篇。研究方向主要包括：微流控芯片和纳米生物医学。
Talk 2
Flexible liquid metal materials based hard technology
Wei Rao 饶 伟
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
中国科学院理化技术研究所
【Abstract】Room temperature liquid metals (LMs) have the advantages of both metal and fluid materials. LMs are a kind of rare multifunctional materials (typically, gallium based alloys). This kind of material has the properties of strong electrical conductivity, high thermal conductivity, and flexible solid-liquid transformation, and large-scale deformation at room temperature. Gallium based alloys have high surface tension and are easy to oxide, which greatly affects the physical and chemical properties of LMs both at the macro and micro scale. Revealing and regulation of the surface and interface characteristics of LMs play an important role in the fabrication of new materials, the improvement of material properties and expanding applications. We have made progress in a series of novel technologies by using modified liquid metal materials, especially in the fields of printing electronics, life health and flexible intelligent robots. This report will be introduced in three aspects:
1) The basic physical and chemical properties of gallium based liquid metal materials, and the challenges faced by the application of related materials;
2) Research on the liquid metal surface and interface, including interface characteristics regulation, conductivity and thermal conductivity enhancement, novel chemical reactions and biological characteristics, etc;
3) Current application status of flexible liquid metal materials.
室温液态金属材料同时具备金属和流体材料的优势，是一类罕见的多能性材料（典型的如镓基合金）。这类材料具有导电性强、热导率高等属性，同时在室温下还可以进行灵活的固液转变及大尺度变形的特性。镓基合金本身具有较大的表面张力，及在空气下易于氧化的特性，大大影响了宏观及微观材料本身的物理化学特性。通过揭示及灵活调控GaIn合金的表界面特征，对新材料的制备、材料物性的提升及应用功能的拓展，均起到重要的作用。我们利用表界面改性的液态金属材料，取得了系列底层技术的突破，特别是在液态金属印刷电子、生命健康及柔性智能机器人等领域取得了原始创新。本次报告将从三方面进行介绍：
1）镓基液态金属材料的基础物理化学特性，及相关材料应用面临的挑战；
2）液态金属表界面行为特性及功能材料可控制备研究，包括界面特性调控、电导率及导热率提升、新奇的化学反应及生物学特性等；
【Biography】Wei Rao is a professor at the Technical Institute of Physics and Chemistry (TIPC), Chinese Academy of Sciences (CAS). Dr. Rao’s research is highly interdisciplinary and covers the material science of liquid metal and micro/nanomaterials. She has published more than 70 papers in peer-reviewed journals such as ACS Nano, material horizon, materials science & Engineering R: reports. Among them, the average impact factor of 43 SCI papers published in the recent 5 years is > 8. In addition, she was one of the leading authors of a book entitled “Advanced Low-cost Medical Technology”. Dr.Rao leads 12 national grants (including NSF, National Key R&D Project, etc.) since 2016.
Dr.Rao was the recipient of the "foreign talents" program by TIPC and the Beijing Youth Talent Support program. Dr.Rao’s team was awarded for the transfer of scientific and technological achievements. At present, Dr.Rao is deputy director of Key Laboratory of Cryogenic Engineering, Chinese Academy of Sciences, and a fellow of Beijing Refrigeration Society.
饶伟研究员就职于中国科学院理化技术研究所。长期从事液态金属及微纳米技术的交叉科学问题研究。近年连续在ACS Nano, Material Horizon, Materials Science & Engineering R: Reports等国内外学术刊物发表70多篇高水平期刊论文。其中，近5年发表的43篇SCI论文平均影响因子>8。曾作为主要作者主编《先进低成本医疗技术》著作。目前担任Nature Communications, Advanced Materials, Advanced Functional Materials, ACS Nano等多个期刊特约审稿人。自2016年以来，主持国家自然科学基金、科技部重点研发计划、北京市科委重大专项、军委科技委项目等共12项。2016年获中科院理化所“引进国外优秀人才”计划，2018年获得北京市青年人才托举计划。2019年所在团队荣获中科院北京分院中国科学院北京分院科技成果转化奖特等奖。目前担任中国科学院低温工程学重点实验室副主任，北京市制冷学会理事。
每一期iCANX Talks直播结束后，都深受参会者好评，不仅为感兴趣的参会者和读者深度理解相关技术提供了帮助，也为研究生深入开展科研提供了一个很好的平台。更多精彩，尽在iCANX Talks，扫描二维码，关注更多精彩内容吧！
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