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ZnSe nanotrenches: formation mechanism and its role as a 1D template.

Wang G, Lok SK, Sou IK - Nanoscale Res Lett (2011)

Bottom Line: High-resolution transmission electron microscopy was used to characterize the microstructures of ZnSe nanotrenches induced by mobile Au-alloy droplets.The contact side interfaces between the AuZnδ alloy droplets and the ZnSe as well as the four side walls of the resulting <011>-oriented nanotrenches were found all belong to the {111} plane family, with the front and back walls being the {111}A planes while the other two side walls being the {111}B planes.These findings offer a deeper understanding on the formation mechanism of the nanotrenches.

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Affiliation: Nano Science and Technology Program, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China. phiksou@ust.hk.

ABSTRACT
High-resolution transmission electron microscopy was used to characterize the microstructures of ZnSe nanotrenches induced by mobile Au-alloy droplets. The contact side interfaces between the AuZnδ alloy droplets and the ZnSe as well as the four side walls of the resulting <011>-oriented nanotrenches were found all belong to the {111} plane family, with the front and back walls being the {111}A planes while the other two side walls being the {111}B planes. These findings offer a deeper understanding on the formation mechanism of the nanotrenches. Pure Au nanodashes were formed upon further deposition of Au on the nanotrenches.PACS: 61.46.Df, Structure of nanocrystals and nanoparticles. 81.16.Rf, Micro and nanoscale pattern formation. 68.37.Og, High resolution transmission electron microscopy.

No MeSH data available.


Related in: MedlinePlus

Cross-sectional TEM image of a nanotrench with the viewing zone axis 90° off [011] orientation. Inset shows the Fourier transform pattern taken from the nearby ZnSe lattice.
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Figure 2: Cross-sectional TEM image of a nanotrench with the viewing zone axis 90° off [011] orientation. Inset shows the Fourier transform pattern taken from the nearby ZnSe lattice.

Mentions: The side-view cross-sectional HRTEM image of a nanotrench with the viewing zone at 90° off the [011] direction, that is, perpendicular to the nanotrench orientation, is shown in Figure 2. This side-view image together with the Fourier transform pattern of the ZnSe lattice as shown in its inset reveals that the left contact interface between the NP and the ZnSe lattice and the right-end surface of the nanotrench are both members of Zn-terminated {111}A surface family. From Figure S3 in Additional file 3 they can be determined to be either the (111)A or the A plane. It is also worthy to note that the non-contacted portion of the surface of the NP is of an arc shape as can be seen in Figure 2.


ZnSe nanotrenches: formation mechanism and its role as a 1D template.

Wang G, Lok SK, Sou IK - Nanoscale Res Lett (2011)

Cross-sectional TEM image of a nanotrench with the viewing zone axis 90° off [011] orientation. Inset shows the Fourier transform pattern taken from the nearby ZnSe lattice.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211336&req=5

Figure 2: Cross-sectional TEM image of a nanotrench with the viewing zone axis 90° off [011] orientation. Inset shows the Fourier transform pattern taken from the nearby ZnSe lattice.
Mentions: The side-view cross-sectional HRTEM image of a nanotrench with the viewing zone at 90° off the [011] direction, that is, perpendicular to the nanotrench orientation, is shown in Figure 2. This side-view image together with the Fourier transform pattern of the ZnSe lattice as shown in its inset reveals that the left contact interface between the NP and the ZnSe lattice and the right-end surface of the nanotrench are both members of Zn-terminated {111}A surface family. From Figure S3 in Additional file 3 they can be determined to be either the (111)A or the A plane. It is also worthy to note that the non-contacted portion of the surface of the NP is of an arc shape as can be seen in Figure 2.

Bottom Line: High-resolution transmission electron microscopy was used to characterize the microstructures of ZnSe nanotrenches induced by mobile Au-alloy droplets.The contact side interfaces between the AuZnδ alloy droplets and the ZnSe as well as the four side walls of the resulting <011>-oriented nanotrenches were found all belong to the {111} plane family, with the front and back walls being the {111}A planes while the other two side walls being the {111}B planes.These findings offer a deeper understanding on the formation mechanism of the nanotrenches.

View Article: PubMed Central - HTML - PubMed

Affiliation: Nano Science and Technology Program, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China. phiksou@ust.hk.

ABSTRACT
High-resolution transmission electron microscopy was used to characterize the microstructures of ZnSe nanotrenches induced by mobile Au-alloy droplets. The contact side interfaces between the AuZnδ alloy droplets and the ZnSe as well as the four side walls of the resulting <011>-oriented nanotrenches were found all belong to the {111} plane family, with the front and back walls being the {111}A planes while the other two side walls being the {111}B planes. These findings offer a deeper understanding on the formation mechanism of the nanotrenches. Pure Au nanodashes were formed upon further deposition of Au on the nanotrenches.PACS: 61.46.Df, Structure of nanocrystals and nanoparticles. 81.16.Rf, Micro and nanoscale pattern formation. 68.37.Og, High resolution transmission electron microscopy.

No MeSH data available.


Related in: MedlinePlus