Abstract
An infrared refractive index sensor based on plasmonic perfect absorbers for glucose concentration sensing is experimentally demonstrated. Utilizing substantial absorption contrast between a perfect absorber (~98% at normal incidence) and a non-perfect absorber upon the refractive index change, a maximum value of figure of merit (FOM*) about 55 and a bulk wavelength sensitivity about 590 nm/RIU are achieved. The demonstrated sensing platform provides great potential in improving the performance of plasmonic refractive index sensors and developing future surface enhanced infrared spectroscopy. © 2014 Optical Society of America.
| Original language | American English |
|---|---|
| Pages (from-to) | 3185-3188 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 39 |
| Issue number | 11 |
| DOIs | |
| State | Published - Jan 1 2014 |
Disciplines
- Aerospace Engineering
- Mechanical Engineering
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