| 학회 | 한국공업화학회 |
| 학술대회 | 2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 | 19권 2호 |
| 발표분야 | 우수논문(구두)_박사과정 |
| 제목 | Investigation of the Sensitive Enhancement in Surface Plasmon Resonance Coupling Sensor Mediated by Stimuli-sensitive Polymer Linker |
| 초록 | A plasmonic coupling sensing device was designed, comprising gold nanoparticles (AuNPs) separated from the gold substrate in a surface plasmon resonance (SPR) spectrometer through a thermo-responsive polymer layer (PNIPAM). The optical properties of the stimuli-responsive sensing devices were investigated by in-situ and scan-mode SPR analysis. The Au film-PNIPAM-AuNPs system shows markedly enhanced sensitivity toward refractive index sensing due to SPR coupling. The device containing AuNPs with optimized AuNPs density showed 3.2-times enhanced sensitivity compared with the control Au film-PNIPAM. The refractive index sensing performance of the Au film-PNIPAM-AuNPs was greater than that of Au film-PNIPAM by 19% when the PNIPAM chains have a collapsed conformation above LCST. Thus, advanced stimuli-sensitive SPR-coupling-based sensory devices with quantified performance are suggested, which can find potential in practical bio-sensing and biotechnology applications. |
| 저자 | 김동하1, 신관우2, 이주미2, 정경화1, 이지은1 |
| 소속 | 1이화여자대, 2서강대 |
| 키워드 | Plasmonic coupling sensing; Thermo-responsive Polymer |
