Abstract
X-shaped plasmonic biosensor (XPS) which has strong sensitivity combined with microfluidic system. The microfluidic system can provide low volume reagents for detection, reduce noise from environment and concentrate the sample on detection spots. TeraPulse 4000 equipment was applied for biosensor, which can define sensitivity by observing variation of refractive index in frequency domain spectrum. The results show metamaterial device in comparison of different concentration of IPA, where refractive index reflects absorption of liquids. Furthermore, the effect of FOM and quality factor can be observed through resonant dip at 0.20898 THz.