DTGS, or deuterated triglycine sulfate, is a type of pyroelectric crystal used in the field of infrared detectors. It is similar to triglycine sulfate (TGS) but contains deuterium atoms in place of hydrogen. This change increases the mass of the molecule and modifies its physical properties, making it more suitable for use as a pyroelectric detector in the mid- to far-infrared region. DTGS has a high thermal stability, fast response time, and high sensitivity to infrared radiation, making it an attractive material for a variety of applications, such as spectroscopy, remote sensing, and thermal imaging.