{'fraction_non_alphanumeric': 0.024489795918367346, 'fraction_numerical': 0.013605442176870748, 'mean_word_length': 4.983739837398374, '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}}
Piezoelectric actuation of a direct write electrospun PVDF fiber

Piezoelectric actuation of a doubly clamped suspended poly (vinylidene fluoride) (PVDF) fiber has been demonstrated. The PVDF fiber is directly deposited onto a collector using near-field electrospinning with in situ electrical poling process. The piezoelectric effect can be further enlarged by polarizing the fiber under a voltage of 2kV for two hours at a temperature of 80°C. A displacement of 2µm on the center of a suspended PVDF fiber, corresponding to a strain of 0.004%, as a result of piezoelectric effect has been detected under an applied electric field of 1.6V/µm. We believe this technology could enable new potential actuation applications for NEMS/MEMS.