报告题目：Progress in thermochromic materials

报告人：龙祎 教授（新加坡南洋理工大学材料科学与工程学院）

时间：2018年12月10日下午3:00

地点：格致楼3016

摘要：

Thermochromic material responds to solar spectrum differently at the stimulus of heat which makes it attractive in the energy saving smart windows application. The most studied inorganic VO2 has the intrinsic problems of low luminous transmission (Tlum) and low solar modulation (ΔTsol the transmission difference between high and low temperatures).1,2 Numerous efforts such as employing dopings, 1,3 nanoparticle-based composites,1,4 and nano-porous structuring 1,5 have been widely studied. Our group have developed five new approaches to tackle this veritable challenge, namely, biomimetic nanostructuring including photonic structure,6 and moth eye7 gridded structures,8,9 tunable plasmonic structures,10,11,12 organic and hybrid structures.13,14 In addition, an active control has also been applied to thermochromic material to generate new electro-thermochromics materials.15,16 Some other new emerging thermal responsive materials will be discussed in this talk. 17,18

References

1. Cui Y.Y.; Ke Y.J.; Liu C; Wang N; Chen Z; Zhang L.M; Zhou Y; Wang S.C; Gao,Y.F; Y. Long*, (2018)Thermochromic VO2 for Energy-efficient Smart Windows, Joule, https://doi.org/10.1016/j.joule.2018.06.018

2. Wang, S.F., M. S. Liu, L. B. Kong, Y. Long, X. C. Jiang, A. B. Yu (2016). Recent progress in VO2 smart coatings: Strategies to improve the thermochromic properties. Prog Mater Sci 81: 1–54

3. Wang, N., S. Liu, X. T. Zeng, S. Magdassi and Y. Long* (2015). Mg/W-codoped vanadium dioxide thin films with enhanced visible transmittance and low phase transition temperature. J Mater Chem C 3(26): 6771-6777.

4. Li M., S. Magadssi, Yf Gao, and Y. Long*. (2017) Hydrothermal synthesis of VO2 polymorphs: advantages, challenges and prospects in energy-saving windows application. Small 10.1002/smll.201701147

5. Cao, X., N. Wang, J. Y. Law, S. C. J. Loo, S. Magdassi and Y. Long* (2014). "Nanoporous Thermochromic VO2 (M) Thin Films: Controlled Porosity, Largely Enhanced Luminous Transmittance and Solar Modulating Ability." Langmuir 30(6): 1710-1715.

6. Qian, X. K., N. Wang, Y. F. Li, J. H. Zhang, Z. C. Xu and Y. Long* (2014). "Bioinspired Multifunctional Vanadium Dioxide: Improved Thermochromism and Hydrophobicity," Langmuir 30(35), 10766-10771.

7. Ke, Y. J., I. Balin, N. Wang, Q. Lu, A. T. I. Yoong, T. J. White, S. Magdassi, I. Abdulhalim and Y. Long* (2016). "Two-Dimensional SiO2/VO2 Photonic Crystals with Statically Visible and Dynamically Infrared Modulation for Smart Window Deployment. " ACS Mater Interf, DOI: 10.1021/acsami.6b12175

8. Liu C., S. Magdassi, D. Mandler, and Y. Y. Long* (2016). "Ionic Strength Induced Electrodeposition: A Universal Approach for Nanomaterials Deposition at Selective Areas." Nanoscale, DOI: 10.1039/C6NR06614C (back cover)

9. Lu, Q., C. Liu, N. Wang, S. Magdassi, D. Mandler and Y. Long* (2016). "Periodical micro-patterned VO2 thermochromic films by mesh printing." J Mater Chem C, DOI: 10.1039/C6TC02694J (back cover)

10. Ke, Y. J, Wen X.L., Zhao D. Y, Che R. C, Xiong Q. H., and Y. Long* (2017). "Controllable Fabrication of Two-Dimensional Patterned VO2 Nanoparticle, Nanodome, and Nanonet Arrays with Tunable Temperature-Dependent Localized Surface Plasmon Resonance for Smart Optical and Thermal Devices" ACS Nano, DOI: 10.1021/acsnano.7b02232.

11. Wang, S.C., Owusu K.A., Mai, L Ke, Y., Zhou, Y., Hu, P, Magdassi, S., Y. Long* (2017) Vanadium dioxide for energy conservation and energy storage applications: Synthesis and performance improvement Appl Energy 211, 200-217.

12. KY. Ke, S. Wang, G. Liu, M. Li, T.J. White, Y. Long*, Vanadium dioxide: The multistimuli responsive material and its applications. Small 14 (39), 1802025 (inside cover)

13. Zhou, Y., Y. F. Cai, X. Hu; Y. Long* (2014)." Temperature-responsive hydrogel with ultra-large solar modulation and high luminous transmission for “smart window” applications." J Mater Chem A 3(3), 1121–1126

14. Zhou, Y., Y. F. Cai, X. Hu; Y. Long* (2015). "VO2/hydrogel hybrid nanothermochromic material with ultra-high solar modulation and luminous transmission." J Mater Chem A 3(3), 1121–1126.

15. Zhou, Y., M. Layani, F. Y. C. Boey, I. Sokolov, S. Magdassi, and Y. Long* (2016). "Electro-Thermochromic Devices Composed of Self-Assembled Transparent Electrodes and Hydrogels." Adv Mater Techn, DOI: 10.1002/admt.201600069

16. Zhou, Y., M. Layani, S. Magdassi, and Y. Long* 2018. "Whole printed hybrid hydrogel." Adv Funct Mater 28, 1705365.

17. KY. Ke, C. Zhou, Y. Zhou, S. Wang, S. H. Chan, Y. Long*, (2018) Emerging Thermal-Responsive Materials and Integrated Techniques Targeting the Energy-Efficient Smart Window Application, Invited review. Adv Funct Mater  DOI: 10.1002/adfm.201800113.

18.  Zhou, Y.; Wan, C.J.; Yang, Y.S.; Yang, H.; Wang, S. C.; Dai, Z.D.; Ji, K.J.; Jiang, H.; Chen, X.D. Y. Long*, Highly Stretchable, Elastic, and Ionic Conductive Hydrogel for Artificial Soft Electronics. Adv Funct Mater https://doi.org/10.1002/adfm.201806220

个人简介：

龙祎，剑桥大学博士，新加坡南洋理工大学材料科学与工程学院教授。主要从事光学薄膜、光子晶体、智能玻璃等纳米功能薄膜研究，曾成功将两项实验室技术转移到计算机硬盘公司及汽车装饰公司，在Joule, Adv Funct Mater, ACS Nano, J Mater Chem, Small等顶级期刊发表很多篇有影响力的学术论文，成果被多家媒体广泛报道，曾获得美国TechConnect Innovation Award，是国际智能窗研究领域引领者。