{'fraction_non_alphanumeric': 0.012012012012012012, 'fraction_numerical': 0.0, 'mean_word_length': 5.947916666666667, '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}}
In Situ Environmental Transmission Electron Microscopy of Ice Nucleation

Heterogeneous ice nucleation on atmospheric aerosols results in cloud formation and represents one of the largest uncertainties in predicting climate. Elucidating the fundamental physicochemical and materials properties that result in highly active ice nuclei requires detailed observation of the ice nucleation process of model substrates in situ. Environmental transmission electron microscopy (TEM) represents a suitable tool for high-resolution analysis of nucleation in situ. Unlike a conventional TEM, gas can be introduced to the sample to simulate the reaction conditions of interest.