In the 1920s and 1930s, she presented research papers on liquid crystals (using the term "mesomorphic substances"), particularly para-Azoxyanisole, variations in its anisotropy due to thermal effects and her PhD thesis (1936) covered its electro- and magneto-optical properties; in doing this she was one of the very few scientists developing a field which was little more than a point of interest for three more decades until the first demonstration of liquid crystal display technology in the late 1960s.