Journal
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
Volume 10, Issue 1, Pages -Publisher
NATL INST MATERIALS SCIENCE
DOI: 10.1088/1468-6996/10/1/014603
Keywords
carbon nanotubes; dispersion; alignment; patterning; magnetic field; diamagnetism; polymer composite; ceramic composite
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We report simultaneous alignment and micropatterning of carbon nanotubes (CNTs) using a high magnetic field. It is important to prepare well-dispersed CNTs for alignment and patterning because CNT aggregation obstructs alignment. In magnetic field, highly anisotropic CNTs rotate in the direction stabilized in energy. Owing to their diamagnetic nature, CNTs suspended in a liquid medium are trapped in a weak magnetic field generated by a field modulator; meanwhile, they align to the applied strong magnetic field. The alignment has been achieved not only in polymers but also in ceramic and silicone composites.
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