| 학회 | 한국고분자학회 |
| 학술대회 | 2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 | 29권 2호, p.114 |
| 발표분야 | 분자전자 부문위원회 |
| 제목 | Recent Progress of Two-Photon Absorption Materials as a Promising Candidate for IT-BT-NT Fusion Technology |
| 초록 | Research on two-photon absorption (TPA) materials have been on the spot light since the late 1990 due to its potential applications in photonics and bio-photonics. In particular, in areas of information and bio-technology TPA research has been the state of the art and in combination with rapidly emerging nano-sciences it is creating a new IT-BT-NT fusion technology of the future. With the laser technology TPA materials allow simple microlithographic nano-patterning possible, with less than 200nm in resolution. This would mean that manufacturing of key optical devices for information industries can be easily achieved which would include 3-D optical data storage device, photonic crystals, optical waveguide, etc. In addition, since TPA materials have optical power limiting properties they can be used in applications where the protection of human eyes and sensitive sensors from the intense laser radiation is required. In regard to bio-science areas, monitoring tissues and organs in real-time 3-D imaging as well as photodynamic cancer diagnosis and therapy are the application of real interest. A particular and important advantage of TPA science is that it can allow to use many areas of forth-mentioned applications from just one type of TPA chromophores. Furthermore, it can also provide an advantage of utilizing already existing IT and BT technologies for preparing various nano-optical and bio-medical devices. Up until now the candidate materials for TPA included, organics with low molar mass, hyperbranched compounds including dendrimers, polymers, organic-inorganic hybrids, and organometallics based on p-conjugated structures. Such materials has been developed since its beginning in mid 1990's and as a result much improved materials performances are now possible and still better ones are coming into a picture. Although, material guaranteeing the practical level performance in terms of stability and efficiency is not yet available worldwide as such to achieve solid progress in the field technology. Therefore, what need to quickly proceed in terms of dealing with key issues in the TPA research include systematic molecular design and material synthesis for obtaining optically stable and highly efficient TPA activities. In parallel to this, methods for accurate and rapid material characterization need to be also developed for the purpose gaining technologies for structure improvement and device fabrication. At the present time work in our group is focused on providing answers to these key issues in overcoming the current limitation in TPA science and technology. In this lecture, the detailed results related to materials synthesis and characterization, 3-D lithographic microfabrication, optical power limiting behavior, etc. on various organic systems obtained in our laboratory are presented. |
| 저자 | 이광섭 |
| 소속 | 한남대 |
| 키워드 | Two-Photon; Multi-branched Chromophores; Dendrimer; Site Isolation; Lithographic Microfabrication |
