TY - JOUR
T1 - Tailoring the nanostructure of anodic aluminum oxide cladding on optical fiber
AU - Liu, Kai
AU - Ma, Yiwei
AU - Du, Henry
N1 - Publisher Copyright:
© 2018 The American Ceramic Society
PY - 2018/12
Y1 - 2018/12
N2 - We report a comprehensive investigation of fabricating nanostructured anodic aluminum oxide (AAO) cladding on optical fiber. We show that the pore size and interpore distance in the AAO cladding with pore channels vertically aligned to fiber surface can be readily controlled by applied voltage, the type, and concentration of electrolytic acid during anodization of aluminum-coated optical fiber. The structural characteristics of the AAO cladding were examined by scanning electron microscopy (SEM) and analyzed using ImageJ software. Processing maps correlating AAO growth and anodization parameters were established. Compared to planar AAO growth on aluminum foil, higher growth rate as well as larger pore diameter and interpore distance were observed for AAO cladding formation on optical fiber under identical anodization conditions due to circumferential tensile stress in the AAO growth front at the convex AAO/aluminum interface. This tensile stress also contributed to radial cracking of the AAO cladding upon exceeding some threshold thickness.
AB - We report a comprehensive investigation of fabricating nanostructured anodic aluminum oxide (AAO) cladding on optical fiber. We show that the pore size and interpore distance in the AAO cladding with pore channels vertically aligned to fiber surface can be readily controlled by applied voltage, the type, and concentration of electrolytic acid during anodization of aluminum-coated optical fiber. The structural characteristics of the AAO cladding were examined by scanning electron microscopy (SEM) and analyzed using ImageJ software. Processing maps correlating AAO growth and anodization parameters were established. Compared to planar AAO growth on aluminum foil, higher growth rate as well as larger pore diameter and interpore distance were observed for AAO cladding formation on optical fiber under identical anodization conditions due to circumferential tensile stress in the AAO growth front at the convex AAO/aluminum interface. This tensile stress also contributed to radial cracking of the AAO cladding upon exceeding some threshold thickness.
KW - anodic aluminum oxide
KW - anodization parameter
KW - interpore distance
KW - optical fiber
KW - pore diameter
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U2 - 10.1111/jace.15859
DO - 10.1111/jace.15859
M3 - Article
AN - SCOPUS:85054173448
SN - 0002-7820
VL - 101
SP - 5836
EP - 5845
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 12
ER -