2020/04/06 by Jhih-Hong Cheng, Robert C. Jones, Oleksandr Sushko +2 · 1 voice
Chemistry · Engineering · Physics and Astronomy · #Spectroscopy and Laser Applications #Spectroscopy and Quantum Chemical Studies #Terahertz technology and applications
paper · doi:10.1109/tthz.2020.2985642
openalex publication_date 2020/04/06 · openalex created_date 2020/04/17 · openalex updated_date 2026/06/11
A quasi-optically based, sub-terahertz, circular dichroism (CD) spectrometer is demonstrated on the model protein, myoglobin, over waveguide bands D (110-170 GHz) and H (220-325 GHz). In doing so, an equivalent methodology is propounded for acquiring cross-polar spectra that eliminates the need for having to physically rotate the receive-horn through 90°. A significant source of systematic-error is, thereby, eliminated (and, no less, random-error that follows when cabling is moved). The “zero-crossing” points of CD spectra are characterized as they are correlated with traditional far-ultraviolet CD spectra for given environmental parameter settings of, for example, pH and/or sample concentration.