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Fabrication of tapered, conical-shaped titania nanotubes

  • G.K. Mor (a1), Oomman K. Varghese (a1), Maggie Paulose (a2), Niloy Mukherjee (a2) and Craig A. Grimes (a3)...


Using anodic oxidation with a time-dependent linearly varying anodization voltage, we have made films of tapered, conical-shaped titania nanotubes. The tapered, conical-shaped nanotubes were obtained by anodizing titanium foil in a 0.5% hydrofluoric acid electrolyte, with the anodization voltage linearly increased from 10-23 V at rates varying from 2.0-0.43 V/min. The linearly increasing anodization voltage results in a linearly increasing nanotube diameter, with the outcome being an array of conical-shaped nanotubes approximately 500 nm in length. Evidence provided by scanning electron-microscope images of the titanium substrate during the initial stages of the anodization process enabled us to propose a mechanism of nanotube formation.


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1.Lee, C.J., Lee, T.J., Lyu, S.C., Zhang, Y., Ruh, H., and Lee, H.J., Appl. Phys. Lett. 81, 3648 (2002).
2.Frindell, K.K., Bartl, M.H., Popitsch, A., and Stucky, G.D., Angew. Chem. Int. Ed. 41, 960 (2002).
3.Varghese, O.K., Malhotra, L.K., and Sharma, G.L., Sensors Actuators B 55, 161 (1999).
4.Chiang, Y.M., Lavik, E.B., Kosacki, I., Tuller, H.L., and Ying, J.Y., Appl. Phys. Lett. 69, 185 (1996).
5.Lee, K.R., Kim, S.J., Song, J.S., Lee, J.H., Chung, Y.J., and Park, S., J. Am. Ceram. Soc. 85, 341 (2002).
6.Khan, S.U.M. and Sultana, T., Solar Energy Mater. Solar Cells 76, 211 (2003).
7.Gong, D., Grimes, C.A., Varghese, O.K., Hu, W., Singh, R.S., Chen, Z., and Dickey, E.C., J. Mater. Res. 16, 3331 (2001).
8.Varghese, O.K., Gong, D., Paulose, M., Ong, K.G., Dickey, E.C., and Grimes, C.A., Adv. Mater. 15, 624 (2003).
9.Varghese, O.K., Gong, D., Paulose, M., Grimes, C.A., and Dickey, E.C., J. Mater. Res. 17, 1162 (2002).
10.Dickey, E.C., Varghese, O.K., Ong, K., Paulose, M., and Grimes, C.A., Sensors 2, 91 (2002).
11.Desai, T.A., Biomol. Eng. 17, 23 (2000).
12.Chen, Q., Zhou, W., Du, G., and Peng, L., Adv. Mater. 14, 1208 (2002).
13.Zhang, M., Bando, Y., and Wada, K., J. Mater. Sci. Lett. 20, 167 (2001).
14.Kasuga, T., Hiramatsu, M., Hoson, A., Sekino, T., and Niihara, K., Adv. Mater. 11, 1307, (1999).
15.Imai, H., Takei, Y., Shimizu, K., and Hirashima, H., J. Mater. Chem. 9, 2971 (1999).
16Hoyer, P., Langmuir 12, 1141 (1996).
17.Varghese, O.K., Gong, D., Paulose, M., Grimes, C.A., and Dickey, E.C., J. Mater. Res. 18, 156 (2003).
18.Choi, J., Sauer, G., Nielsch, K., Wehrspohn, R.B., and Gosele, U., Chem. Mater. 15, 776 (2003).
19.Zwilling, V., Aucouturier, M., and Darque-Ceretti, E., Electrochim. Acta 45, 921 (1999).
20.Ibrahim, M.A.M., Pongkao, D., and Yoshimura, M., J. Solid State Electrochem. 6, 341 (2002).
21.Patermarakis, G. and Moussoutzanis, K., J. Electrochem. Soc. 142, 737 (1995).
22.Patermarakis, G. and Karayannis, H.S., Electrochim. Acta 40, 2647 (1995).
23.Parkhutik, V.P. and Shershulsky, V.I., J. Phys. D: Appl. Phys. 25, 1258 (1992).
24.Macdonald, D.D., J. Electrochem. Soc. 140, L27 (1993).
25.Diggle, J.W., Downie, T.C., and Goulding, C.W., Electrochim. Acta 15, 1079 (1970).
26.Wood, G.C. and O'Sullivan, J.P., Electrochim. Acta 15, 1865 (1970).
27.Patermarakis, G., Lenas, P., and Papayiannis, G., Electrochim. Acta 36, 709 (1991).
28.Li, A.P., Müller, F., Birner, A., Nielsch, K., and Gösele, U., J. Appl. Phys. 84, 6023 (1998).
29.Jessensky, O., Müller, F., and Gösele, U., Appl. Phys. Lett. 72, 1173 (1998).
30.Zwilling, V., Darque-Ceretti, E., Boutry-Forveille, A., David, D., Perrin, M.Y., and Aucouturier, M., Surf. Interface Anal. 27, 629 (1999).
31.Delplancke, J-L. and Winand, R., Electrochim. Acta 33, 1551 (1988).
32.Sul, Y-T., Johansson, C.B., Jeong, Y., and Albrektsson, T., Med. Engg. Phys. 23, 329 (2001).
33.Hwang, B.J. and Hwang, J.R., J. Appl. Electrochem. 23, 1056 (1993).
34.Siejka, J. and Ortega, C., J. Electrochem. Soc.: Solid State Sci. Technol. 124, 883 (1977).
35.Thompson, G.E., Thin Solid Films 297, 192 (1997).
36.Pakes, A., Thompson, G.E., Skeldon, P., and Morgan, P.C., Corros. Sci. 45, 1275 (2003).


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