Morphological evolution of the self-assembled IrO2 one-dimensional nanocrystals

被引：19

作者：

Chen, RS

Chang, HM

Huang, YS ^{[1
]}

Tsai, DS

Chiu, KC

机构：

[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 106, Taiwan

[2] Natl Taiwan Univ, Dept Chem Engn, Taipei 106, Taiwan

[3] Natl Chung Yuan Univ, Dept Phys, Chungli 320, Taiwan

来源：

NANOTECHNOLOGY | 2005年 / 16卷 / 01期

关键词：

D O I：

10.1088/0957-4484/16/1/019

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, we report on a direct observation of the morphological evolution of one dimensional (1D) nanocrystals via a systematic metal-organic chemical vapour deposition (MOCVD) study. Several IrO2 1D nanostructures have emerged as a result of a decrease in the degree of interface instability. The morphological evolution occurs from triangular/wedged nanorods via incomplete/scrolled nanotubes to square nanotubes and square nanorods according to the morphological stability. The results show that the polycrystalline films composed of continuous 3D grains belong to the most stable form as compared to the 1D nanocrystals. The shape evolution has been found to highly correlate to a morphological phase diagram based on the growth kinetics.

引用

收藏

页码：93 / 97

页数：5

相关论文

共 24 条

[1] Rhenium(IV) sulfide nanotubes [J].

Brorson, M ;

Hansen, TW ;

Jacobsen, CJH .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (39) :11582-11583

[2] Growth and characterization of vertically aligned self-assembled IrO2 nanotubes on oxide substrates [J].

Chen, RS ;

Chang, HM ;

Huang, YS ;

Tsai, DS ;

Chattopadhyay, S ;

Chen, KH .

JOURNAL OF CRYSTAL GROWTH, 2004, 271 (1-2) :105-112

[3] Growth of well aligned IrO2 nanotubes on LiTaO3(012) substrate [J].

Chen, RS ;

Huang, YS ;

Tsai, DS ;

Chattopadhyay, S ;

Wu, CT ;

Lan, ZH ;

Chen, KH .

CHEMISTRY OF MATERIALS, 2004, 16 (12) :2457-2462

[4] Field emission from vertically aligned conductive IrO2 nanorods [J].

Chen, RS ;

Huang, YS ;

Liang, YM ;

Hsieh, CS ;

Tsai, DS ;

Tiong, KK .

APPLIED PHYSICS LETTERS, 2004, 84 (09) :1552-1554

[5] Growth of IrO2 films and nanorods by means of CVD:: An example of compositional and morphological control of nanostructures [J].

Chen, RS ;

Chen, YS ;

Huang, YS ;

Chen, YL ;

Chi, Y ;

Liu, CS ;

Tiong, KK ;

Carty, AJ .

CHEMICAL VAPOR DEPOSITION, 2003, 9 (06) :301-305

[6] Growth control and characterization of vertically aligned IrO2 nanorods [J].

Chen, RS ;

Huang, YS ;

Liang, YM ;

Tsai, DS ;

Chi, Y ;

Kai, JJ .

JOURNAL OF MATERIALS CHEMISTRY, 2003, 13 (10) :2525-2529

[7] ELECTRONIC SEMICONDUCTING OXIDES AS PH SENSORS [J].

FOG, A ;

BUCK, RP .

SENSORS AND ACTUATORS, 1984, 5 (02) :137-146

[8] Chemistry and physics in one dimension: Synthesis and properties of nanowires and nanotubes [J].

Hu, JT ;

Odom, TW ;

Lieber, CM .

ACCOUNTS OF CHEMICAL RESEARCH, 1999, 32 (05) :435-445

[9] HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].

IIJIMA, S .

NATURE, 1991, 354 (6348) :56-58

[10]

*INT CTR DIFFR DAT, 15870 JCPDS