The 283rd MANA & the 124th ICYS Joint Seminar
Dr. Lok K. Shrestha & Dr. Norihiro Suzuki
| Date | September 21, Friday |
| Time | 15:30-16:30 |
| Place | Auditorium, 1F, WPI - MANA Bldg., NAMIKI Site, NIMS |
Download PDF file for seminar info.
15:30-16:00
Surfactant induced morphological modifications of crystalline C60
Fabrication of shape-controlled nano-sized objects through self-assembly of functional units is a key issue in bottom-up nanotechnology.1 In particular, functional molecules such as fullerenes (C60)2 require assembly into well defined forms in order to construct advanced electronic, photonic, or bionic devices.3 Therefore studies of self-assembled nanostructures of C60 continue to attract attention. In this talk, we present our recent results on the production of various shaped crystalline C60 following liquid-liquid interfacial precipitation (LLIP) method in particular the role of surfactant on the structure and properties C60 micro/nanocrystals.4 We will also briefly discuss the template-free formation of mesoporous single crystalline C60and electrochemical performances of heat-treated C60 crystals.
References
- G. Whitesides, B. A. Grzybowski, Science 295 (2002) 2418.
- H. W. Kroto, J. R. Heath, S. C. O’Brien, R. F. Curl, R. E. Smalley, Nature 318 (1985) 162.
- E. Nakamura, H. Isobe, Acc. Chem. Res. 36 (2003) 807.
- K. Miyazawa, Y. Kuwasaki, A. Obayashi, M. Kuwabara, J. Mater. Res. 17 (2002) 83.
Speaker
Dr. Lok K. Shrestha, MANA Scientist, MANA, NIMS
Chair
Dr. Katsuhiko Ariga, MANA PI, MANA, NIMS
16:00-16:30
Application of Mesoporous Silica Particles as Smart Inorganic Filler Materials
With the recent rapid progression of digital devices, portable electronic devices, and other industrial materials, the use of polymer-based substances have been found to be highly beneficial in commercial products. Such polymer-based substances are utilized on silicon chips to cover the integrated circuits. For commercial use of the polymers, superior mechanical and electronic properties have been highly demanded. Inorganic filler loading is commonly used to enhance the polymer’s properties. By utilizing their huge number of nanoscale pores and extremely large pore volumes, mesoporous silica particles have a potential to be excellent filler materials. In this seminar, I will introduce two topics as follows: reduction of dielectric constant by incorporating air, and suppression of thermal expansion by physical confinement.
Speaker
Dr. Norihiro Suzuki, ICYS-Sengen Researcher, NIMS
Chair
Dr. Kenjiro Miyano, Managing Director, ICYS, NIMS