| Autor: |
Luo, Tingjun, Pang, Lin, Zhang, Weiping, Chen, Matthew |
| Zdroj: |
Proceedings of SPIE; February 2012, Vol. 8234 Issue: 1 p82340O-82340O-8, 741069p |
| Abstrakt: |
With 3-D finite difference time domain (FDTD) method, we investigate the effect of the geometry parameters and near field distribution on sensitivity of the bowtie type nanoresonator biosensor in terms of refractive index. The calculation results show that the geometry parameters including gap (G), radius of curvature (R) and tip angle (A) have different effects on bulk sensitivity of bowtie metallic nanostructure. The sensitivity linear decreases as G increases while exponential decreases as R increases. Moreover, with A taking 15° to 135°, the sensitivity descends initially and then rises. As for the influence of near field on sensitivity, we can conclude that sensitivity is proportional to maximal local field and the scale factor of fitted curve for R is larger than the one for G. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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