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Preparation and Dielectric Properties of Nanostructured ZnO Whiskers |
| SHI Xiao-Ling;YUAN Jie;ZHOU Wei;RONG Ji-Li;CAO Mao-Sheng |
| School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 |
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| Cite this article: |
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SHI Xiao-Ling, YUAN Jie, ZHOU Wei et al 2007 Chin. Phys. Lett. 24 2994-2997 |
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Abstract By a novel controlled combustion synthesis method, a large number of nanostructured ZnO whiskers with different morphologies, such as tetra-needles, long-leg tetra-needles and multi-needles, are prepared without any additive in open air at high temperature. The morphologies and crystalline structures of the as-prepared ZnO nanostructured whiskers are investigated by SEM and XRD. The possible growth mechanism on the nanostructured ZnO whiskers is proposed. The experimental results indicate that the dielectric constants and losses of the nanostructured ZnO whiskers are very low, demonstrating that the nanostructured ZnO whiskers are low-loss materials for microwave absorption in X-band. However, obvious microwave absorption in nanostructured ZnO whiskers is observed. The quasi-microantenna model may be attributed to the microwave absorption of the ZnO whiskers.
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| Keywords:
81.20.Ka
81.05.Dz
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Received: 27 May 2007
Published: 20 September 2007
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| PACS: |
81.20.Ka
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(Chemical synthesis; combustion synthesis)
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81.05.Dz
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(II-VI semiconductors)
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[1] Chen Y F, Bagnall D and Yao T 2000 Mater. Sci. Eng. B 75 190
[2] Pan Z W, Dai Z R and Wang Z L 2001 Science. 291 1947
[3] Du Y L, Zhang M S, Deng Y, Chen Q, Yin Z and Chen W C 2002 Chin.Phys. Lett. 19 372
[4] Liao Z M, Zhang H Z, Xu J and Yu D P 2004 Chin. Phys.Lett. 22 987
[5] Yang J, Wang W Z, Ma Y, Wang D Z, Steeves D, Kimball B and Ren Z F2006 Nanotechnology 6 2196
[6] Chen Y J, Cao M S, Wang T H and Wan Q 2004 Appl. Phys.Lett. 84 3367
[7] Cao M S, Zhou W, Shi X L and Chen Y J 2007 Appl. Phys.Lett. 91 021912-1
[8] Zhou Z W, Deng H, Yi J and Liu S K 1999 Mater. Res. Bull. 11 1563
[9]Huang M H, Wu Y, Feick H, Tran N, Weber E and Yang P 2002 Adv.Mater. 13 113
[10] Wan Q, Yu K and Lin C L 2003 Appl. Phys. Lett. 83 2253
[11] Pan Z W, Dai Z R and Wang Z L 2001 Science 291 1947
[12] Govender K, Boyle D S, Brien P O, Binks D, West D and Coleman D2002 Adv. Mater. 14 1221
[13] Li Y, Meng G W, Zhang L D and Phillipp F 2000 Appl.Phys. Lett. 76 2011
[14] Park W I, Kim D H, Jung S W and Yi G C 2002 Appl. Phys.Lett. 80 4232
[15] Zhang J, Yu W and Zhang L 2002 Phys. Lett. A 299 276
[16] Hwang C C and Wu T Y 2004 Mater. Sci. Eng. B 111 197
[17] Yu Q X, Xu B, Wu Q H, Liao Y, Wang G Z and Fang R C 2003 Chin.Phys. Lett. 20 2235
[18] Liu Z F, Li Y X, Shan F K, Xu Z H and Yu Y S 2004 Chin. Phys.Lett. 21 74
[19] Chen Y J, Zhu C L and Xiao G 2006 Nanotechnology 17 4537
[20] Ramasubramaniam R, Chen J and Liu H Y 2003 Appl. Phys.Lett. 83 2928
[21] Watts P C P, Hsu W K, Barnes A and Chambers B 2003 Adv.Mater. 15 600
[22] Watts P C P, Ponnampalam D R, Hsu W K, Barnes A and Chambers B2003 Chem. Phys. Lett. 378 609
[23] Xiang C S, Pan Y B, Liu X J, Sun X W, Shi X M and Guo J K 2005 Appl. Phys. Lett. 87 123103
[24] Chen Z, Shan Z W, Cao M S, Lu L and Mao S X 2004 Nanotechnology 15 365
[25] Ramirez A P, Haddon R C, Zhou O, Fleming R M, Zhang J, McClure S Mand Smalley R E 1994 Science 265 84
[26] Ruan S, Xu B, Suo H, Wu F, Xiang S and Zhao M 2000 J. Magn. Magn.Mater. 212 175
[27] King R W P, Mack R B and Sandler S S 1967 Proc. IEEE 55 2143
[28] Galdi V, Pierro V, Castaldi G, Pinto I M and Felsen L B 2005 IEEETrans. Antennas Propagat. 53 3368 |
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