TY - JOUR
AU - Wood, Andrew
AB - The THz/Far-IR Beamline at the Australian Synchrotron was used to demonstrate a novel method of estimating thedielectric properties of water based substances in the 2.0 THz region. The method involves using an ATR apparatus with adiamond crystal in a way that converts the apparatus to a reflection/transmission mode by using a mirror at a set distancefrom the crystal/sample interface to reflect the transmitted portion of the incoming beam back to the detector. The methodcan extract the full dielectric properties of a sample. The method is only limited by the frequency range of the source andthe sensitivity range of the detector. It is best suited to studies at 2.0 THz and above with a diamond crystal ATR apparatus,since the combination of the refractive index of diamond (n=2.40) and water (n=1.95 at 2.0 THz) are in the optimal ratioto produce excellent contrast. Water and water based gel were used to demonstrate the technique.
TI - Estimating the dielectric parameters of water and gel using reflectance and transmission at 1.85 to 2.07 THz
JF - Proceedings of SPIE
DO - 10.1117/12.2615416
DA - 2021-10-27
UR - https://www.deepdyve.com/lp/spie/estimating-the-dielectric-parameters-of-water-and-gel-using-b2OYffdpfe
SP - 119250B
EP - 119250B-6
VL - 11925
IS - 
DP - DeepDyve
ER -