Image Recognition
When compressed by the injection of a gas sample, a ripple-like deformation effect occurs at this interface. The compression and deformation of the PDMS, and the resulting pattern of ripples, produce structural colors that impact the device’s optical transmittance. The key to this chemistry is maximizing the deformation so it can be used for measuring and visualizing the structural colors in the ripple patterns. As the PDMS deformation depends on gas flowrates, densities and viscosities, the produced structural colors can be used to analyze the properties of gas samples. According to NIMS, the team is investigating incorporating this technology into image-recognition and machine-learning techniques to improve gas analysis.