Amazing: Smartphone can detect pregnancy
By: Team Ifairer | Posted: 03-07-2015
Heart It
When the metallic film is placed in contact with a fluid, the index of refraction of the liquid changes the absorbed band's size and location in the light spectrum. By adding recognition elements to the film that cause a shift in the index of refraction when bound to targeted biomolecules or trace gases, scientists can thus determine important information about a biological sample's composition based on, which light is reflected and which is absorbed.