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Synthesis of thin carbon films on 4H-SiC by low temperature extraction of Si with HCl

✍ Scribed by M.A. Fanton; J.A. Robinson; M. Hollander; B.E. Weiland; K. Trumbull; M. LaBella

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 126 KB
Volume: 48
Category: Article
ISSN: 0008-6223
DOI: 10.1016/j.carbon.2010.03.072

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✦ Synopsis

PTFE particles hold the water droplets up and keep them from coming into contact with CNTs. More importantly, air in pores and between PTFE particles helps the surface achieve a great contact angle, much higher than that of water on plain PTFE films. When more PTFE particles are deposited onto the sample surface, a denser coating is produced with a reduced volume of air, leading to a decreased contact angle. However, because of these voids and air trapped in them, the contact angle of water on such a surface is always greater than that on plain PTFE films (Fig. 3).

The hot-pressed bulk CNT material, like graphite, can be machined into desired shapes with fine and complex channels. These results enable these internal surfaces of the tubes or channels to be super-hydrophobic, and the super-hydrophobility can be restored by repeating the procedure described above when damage occurs during use.

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