FTIR (Fourier-transform infrared spectroscopy)

Fourier-transform infrared spectroscopy (FTIR) is an analytical technique used to identify materials based on their infrared light absorption. When infrared light passes through a sample, certain wavelengths are absorbed by the molecules, causing vibrations. These absorption patterns create a unique "fingerprint" for each substance. FTIR uses a mathematical method called Fourier transform to process the data quickly and accurately, resulting in a spectrum that reveals the chemical composition. This technique is widely used in chemistry, materials science, and quality control to analyze and verify substances efficiently.