상세정보
학술대회
Sub-ppm detection of gold nanoparticle transducer toward carboxyl functionality
- 발행일
- 200511
- 출처
- SENSORS 2005, pp.845-848
- 협약과제
- 05MB3500, e-Health 구현을 위한 바이오 센서 기술 개발, 최창억
- 초록
- Gold nanoparticles functionalized with methyl 3-mercaptopropionate (MMP) were synthesized and used as sensor materials to detect acetic acid in the sub-ppm range. The success of the MMP gold nanoparticles was confirmed by high resolution TEM and FTIR. The average diameter was characterized by TEM to be 3.1 nm. Transducer film was formed on a glass or a silicon substrate mounted with interdigitated gold electrodes. Highly porous morphology with sub-micron porosity was observed by SEM images of the nanoparticle film. The nanoparticle sensor was able to reproducibly detect around 50 ppb of acetic acid. Moreover linear relationship between response amplitude and analyte concentration was observed at least from 40 ppb to 2000 ppb. © 2005 IEEE.
- KSP 제안 키워드
- Acetic acid(AA), Average diameter, High resolution TEM, Highly porous, Interdigitated gold electrodes, Methyl 3, Nanoparticle films, Porous morphology, SEM images, Sensor material, Silicon substrate