[1] S. Heinze, J. Tersoff, and R. Martel, Phys. Rev. Lett. 89, 106801 (2002).

[2] J. Appenzeller, J. Knoch, and V. Derycke, Phys. Rev. Lett. 89, 126801 (2002).

[3] J. Wang and M. Musameh, Analyst. 129, 1 (2004).

[4] Y. J. Sun, Y. Cheng, F. Wang, and J. M. Li, Chin. Phys. Lett. 21, 447 (2004).

[5] B. D. Huang, Y. Y. Xia, and M. W. Zhao, Chin. Phys. Lett. 21, 2388 (2004).

[6] M. S. Dresselhaus, Nature 432, 959 (2004).

[7] P. J. Burke, S. Li, and Z. Yu, IEEE Trans. Nanotechnol. 5, 314 (2006).

[8] H. Jin and G. W. Hanson, IEEE Trans. Nanotechnol. 5, 766 (2006).

[9] K. Kempa, J. Rybczynski, and Z. P. Huang, Advanced Materials 19, 421 (2007).

[10] Y. Wang, K. Kempa, and B. Kimball, Appl. Phys. Lett. 85, 2607 (2004).

[11] Y. Wang, Q. Wu, and W. Shi, International Journal of Infrared and Millimeter Waves 29, 35 (2008).