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Review Letters £¨PRL£¬Ó°ÏìÒò×Ó´óÓÚ7£©ºÍ Advanced Materials£¨AM£¬Ó°ÏìÒò
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¡¡¡¡1. New Self-Limiting Assembly Model for Si Quantum Rings on Si(100)
¡¡¡¡L.W. Yu, K. J. Chen,* J. Song, J. Xu, W. Li, X. F. Li, J. M. Wang,
and X. F. Huang
¡¡¡¡Physical Review Letters 98, 166102 (2007) £¨2006Äê11ÔÂ7ÈÕͶ¸å£¬
2007Äê4ÔÂ20ÈÕ·¢±í£©
¡¡¡¡£¨ÂÛÎÄÁ´½Ó
http://scitation.aip.org/getpdf/ ... iletype=pdf&id=
PRLTAO000098000016166102000001&idtype=cvips&prog=normal£©

¡¡¡¡2. Self-Assembled Si Quantum-Ring Structures on a Si Substrate by
Plasma-Enhanced Chemical Vapor Deposition Based on a Growth-Etching
Competition Mechanism**
¡¡¡¡Lin Wei Yu, Kun Ji Chen,* Jie Song, Jun Xu, Wei Li, Hong Min Li,
Mu Wang, Xue Fei Li, and Xin Fan Huang
¡¡¡¡Advanced Materials £¨Communication£©2007, 19, 1577¨C1581 £¨2006Äê
12ÔÂ7ÈÕͶ¸å£¬2007Äê2ÔÂ6ÈÕÐ޸ĸ壬2007Äê5ÔÂ23ÈÕ·¢±í£©
¡¡¡¡£¨ÂÛÎÄÁ´½Ó
http://www3.interscience.wiley.c ... /114268326/PDFSTART£©

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¡¡¡¡1. PRLÂÛÎÄÉϹ²ÓÐ5ÕÅͼ£¬AMÂÛÎÄÉϹ²ÓÐ6ÕÅͼ£¬AMÉϵÄǰ5ÕÅͼÓëPRLµÄ5ÕÅ
ͼ¼¸ºõÍêȫһÑù£¨ÄÜ¿´³öÏ¸Î¢Çø±ðµÄ½ö½öÊÇͼ1ÖеķֱæÂÊÂÔÓв»Í¬£©£¬AMÉÏÐÂ
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¡¡¡¡2. PRLÉÏÒ»¹²ÓÐ6¸ö¹«Ê½£¬AMÉÏÒ»¹²ÓÐ7¸ö¹«Ê½£¬Êµ¼ÊÉÏÁ½ÆªÂÛÎĵÄËùÓй«Ê½
ÍêÈ«Ïàͬ£¬×÷Õß½ö½ö°ÑAMÉϵĹ«Ê½£¨5£©ºÍ£¨6£©ºÏ²¢³ÉPRLÉϵĹ«Ê½£¨5£©¡£

¡¡¡¡3. ÂÛÎĵÄ×÷Õß¼¸ºõÒ»Ñù£¬ ÌØ±ðÊǵÚÒ»×÷ÕßÓëͨѶ×÷ÕßÍêÈ«Ïàͬ¡£

¡¡¡¡4. Á½ÆªÂÛÎĵÄÖ÷Òª½áÂÛ¼¸ºõÒ»Ö¡£

¡¡¡¡£¨PRL£©In summary, we propose a new self-limiting assembly growth
model for Si quantum ring structures on Si(100). Based on a
growth-etching competition mechanism, we obtain perfect Si quantum
rings with excellent rotational symmetry, narrow edge width (down to
10 nm), and tunable size and morphology. We suggest that this growth
model is not limited to a certain material system, but also represents
a general scheme to control and even tailors the evolution of the
self-assembly nanostructures into desired size, shape, and complexity,
and thus has important theoretical and practical implications.

¡¡¡¡£¨AM£©In summary, we have, for the first time, fabricated
self-assembled Si quantum-ring structures on a Si substrate by using a
PECVD technique based on a plasma growth/etching competi-tion
mechanism.We obtained perfect Si quantum rings with excellent
rotational symmetry and a narrow edge width (down to 10 nm). Moreover,
the ring size and morphology were tuned by
¡¡¡¡simply adjusting the timing procedure, and the fabrication process
was fully compatible with standard microelectronic Si technologies.
The as-grown Si ring structures could be electrically well isolated by
controlling the ring/substrate junction bias condition, which lays the
ground work for further device applications. We also suggest that this
growth model, because it is not
¡¡¡¡limited to certain specific material systems, actually represents
a general scheme for controlling and tailoring the shapes, sizes, and
complexities of self-assembled nanostructures.

¡¡¡¡ÓÐÈË»áÈÏΪÕâÊǹú¼ÊѧÊõ½çÏÈ·¢¶ÌÎÄ£¨Letter£¬Communication£©ÔÙ·¢³¤ÎÄ
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