221 / 2024-07-24 21:23:04

Terahertz Study on Biological Samples

Terahertz, spectroscopy, imaging, biology

Terahertz (THz) spectroscopy and imaging are important areas of THz science and technology. In this presentation, first I will introduce the background of THz bio-detection. Second, I will demonstrate the application of some conventional THz far-field spectroscopy and imaging techniques in biological studies. Third, I will show three advanced THz near-field methods, including THz time-domain attenuated total reflection spectroscopy which was employed to investigate the effects of bioactive chemicals on living cells in aqueous media, a home-developed THz near-field microscopy for the study of tissue slices and single cells at the micron level, and a THz scattering-type scanning near-field optical microscopy with a nanometer resolution by which single protein molecules have been successfully observed. Finally, a brief summary and some perspectives are given. Collectively, our results manifest that despite facing challenges THz technology is holding a promising future in biomedical field.