{'fraction_non_alphanumeric': 0.014940239043824702, 'fraction_numerical': 0.00398406374501992, 'mean_word_length': 5.483870967741935, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
The Analysis of Photoresist's Absorption Spectrum by THz-TDS

characterization of chemical material, with emphasis on interaction between electromagnetic radiation and chemical material. Based on the strong tendency of biological processes to produce molecules with a handedness, THz band substances in the rich spectrum contains the physical and chemical information. Therefore using THz time-domain spectroscopy techniques to detect the spectrum of photoresist, and further study of the photoresist. In this paper, we uses THz time domain spectroscopy technique to measured the absorption spectrum of photoresist in frequency from 0.5 to2.5 THz. In this study we investigatge the possibility to use the THz absorption spectrum of two different photoresist samples and we find a significant difference in the absorption between exposure and unexposure photoresist sample. At last we discuss the requirements to sample preparation imposed by the lack of sharp spectral features in the absorption spectra.