Researchers are developing a non-invasive method to measure blood flow to the brain using infrared spectroscopy.These include a new paper fluorescence tool that can image brain activity in 3D; And a wearable cap with a built-in infrared laser that even babies can wear to detect brain damage.

Short-wave length infrared band referred to as"SWIR”. SWIR located in the non-visible spectrum between near infrared (NIR) and long wave infrared (IR).The general wavelength range is 1400-3000nm, which contains rich material spectral information.