On-chip monitoring of toxic gases: capture and label-free SERS detection with plasmonic mesoporous sorbents
- Post by: nfp
- Comments off
The evaluation of toxic gas molecules spread in air at low concentration on field requires a robust microfluidic platform combined with analytical technique that can be portable and able to detect and identify the molecules. We integrate a 3D plasmonic architecture based on closely packed mesoporous silica (MCM48) nanospheres decorated by Au nanoparticles arrays, denoted as MCM48@Au, within a Si microfluidic chip. The SERS performance of the plasmonic platform is thoroughly analyzed using DMMP as model neurotoxic simulant. The chip was able to detect 2.5ppmV with a portable Raman equipment and be reused, after heat regeneratsion, several times without losing its performance.
Full article here.