Title :
Interface engineering of bio-inspired Boron nitride nano-architectures toward controllable hydrophobicity/hydrophilicity
Author :
Pakdel, Amir ; Mori, Takao ; Bando, Yoshio ; Golberg, Dmitri
Author_Institution :
WPI Centre for Mater. Nanoarchitectonics (MANA), Nat. Inst. for Mater. Sci. (NIMS), Tsukuba, Japan
Abstract :
Bio-inspired hierarchical Boron nitride (BN) nanostructure films were grown by a CVD method and two aspects of interface engineering (i.e. morphological changes and chemical functionalization) were applied to control their wetting properties. As a result, a wide range from superhydrophilicity with contact angle (CA) of ~5° to superhydrophobicity with CA of ~160° was obtained. Highly-rough vertical-to-substrate nanotube and nanosheet patterns demonstrated great water-repellency whereas conical nanostructures were less hydrophobic. On the other hand, hydroxyl-functionalized BN nanostructures were extensively wetted by water droplets.
Keywords :
III-V semiconductors; boron compounds; chemical vapour deposition; contact angle; hydrophilicity; hydrophobicity; nanofabrication; semiconductor growth; semiconductor nanotubes; semiconductor thin films; surface morphology; surface roughness; wetting; wide band gap semiconductors; BN; CVD; bioinspired boron nitride nanoarchitectures; conical nanostructures; contact angle; controllable hydrophilicity; controllable hydrophobicity; highly-rough vertical-to-substrate nanotube; hydroxyl-functionalized nanostructures; interface engineering; morphological properties; nanosheet; nanostructure films; superhydrophilicity; water droplets; wetting properties; Boron; Films; Morphology; Nanoscale devices; Plasmas; Surface morphology; Surface treatment; boron nitride; contact angle; functionalization; nanostructures; surface roughness;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2015 IEEE 10th International Conference on
Conference_Location :
Xi´an
DOI :
10.1109/NEMS.2015.7147380
