{'fraction_non_alphanumeric': 0.016320474777448073, 'fraction_numerical': 0.001483679525222552, 'mean_word_length': 5.192660550458716, '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}}
Nanometer spacing technologies for ultra-high density surface recording systems

Contact recording systems have been studied for future surface recording disks with a high recording density. Ultra-low spacing technologies for ultra-low spacing are required for the contact systems as well as high wear performance. Particularly, a liquid lubrication system plays an important role for reducing a mechanical spacing and for improving wear performances. In this study, molecular design of lubricants for contact systems will be discussed from a viewpoint of bouncing and wear behaviors. As a result, a minimum bouncing height of 3 nm and a high wear performance were obtained.