{'fraction_non_alphanumeric': 0.013806706114398421, 'fraction_numerical': 0.014792899408284023, 'mean_word_length': 4.8, '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}}
Crystallite size of the graphitic phase in soot ink based on historic recipe: A potential dating tool for old manuscripts


 In this paper, we report the crystallite size of the graphitic phase observed in a soot ink sample prepared based on an original Ottoman recipe in the 18th century for the first time. Intensity ratio of the D and G bands that were observed at 1384 and 1609 cm-1 respectively, revealed that the crystallite size is 24.33 nm. This corresponds to a carbon phase between graphitic and well graphitic stage. We strongly believe that this could be further used particularly for dating purposes by investigating carbon-black pigments which we have not encountered its consideration in the literature for mainly manuscripts. Here, we especially propose using the Tuinstra-Koenig relationship together with the consideration of D and G band profiles to derive the crystallite size of the graphitic phase observed in soot ink and other various carbon-black inks for the purpose of manuscript dating.