Terahertz Microfluidic Metamaterial Biosensor for Tiny Volume Liquid Samples

We present a novel multi-microfluidic-channel metamaterial biosensor (MCMB) for highly sensitive terahertz (THz) sensing of tiny volume liquid samples. The multi-channels are set mainly in the strong electric field enhancement area of the metamaterial, which significantly decreases the liquid amount and enhances interaction between the sensing targets and the THz wave (thus increasing the sensitivity). The water sensing results demonstrate the effectiveness of this proposed design and the great potential in THz biosensing.