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hdtang1976

Ìú¸Ëľ³æ (СÓÐÃûÆø)


[×ÊÔ´] ¡¾×ÊÔ´¡¿×îеķ¢ÔÚNatureÉϵĹØÓÚ½ðÊô²£Á§µÄһƪÎÄÏ×£¡

http://www.namipan.com/d/Nanomou ... c55dd23eacaa4e50b00

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whh1235068

ľ³æ (СÓÐÃûÆø)


¡ï¡ï¡ï ÈýÐǼ¶,Ö§³Ö¹ÄÀø

²»´í²»´í£¡
2Â¥2009-04-17 15:44:50
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¡ï¡ï¡ï ÈýÐǼ¶,Ö§³Ö¹ÄÀø

ллÌṩ
5Â¥2009-04-17 22:12:01
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hslining

ľ³æ (ÕýʽдÊÖ)


¡ï ¡ï
amannnn(½ð±Ò+2,VIP+0):ллÌṩ 4-18 13:04
Nanomoulding with amorphous metals
Abstract
Nanoimprinting promises low-cost fabrication of micro- and nano-devices by embossing features from a hard mould onto thermoplastic materials, typically polymers with low glass transition temperature. The success and proliferation of such methods critically rely on the manufacturing of robust and durable master moulds. Silicon-based moulds are brittle and have limited longevity. Metal moulds are stronger than semiconductors, but patterning of metals on the nanometre scale is limited by their finite grain size. Amorphous metals (metallic glasses) exhibit superior mechanical properties and are intrinsically free from grain size limitations. Here we demonstrate direct nanopatterning of metallic glasses by hot embossing, generating feature sizes as small as 13 nm. After subsequently crystallizing the as-formed metallic glass mould, we show that another amorphous sample of the same alloy can be formed on the crystallized mould. In addition, metallic glass replicas can also be used as moulds for polymers or other metallic glasses with lower softening temperatures. Using this 'spawning' process, we can massively replicate patterned surfaces through direct moulding without using conventional lithography. We anticipate that our findings will catalyse the development of micro- and nanoscale metallic glass applications that capitalize on the outstanding mechanical properties, microstructural homogeneity and isotropy, and ease of thermoplastic forming exhibited by these materials.

Download
http://www.nature.com/nature/journal/v457/n7231/full/nature07718.html

[ Last edited by hslining on 2009-4-18 at 12:18 ]
7Â¥2009-04-18 12:13:16
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kongbei

½ð³æ (ÕýʽдÊÖ)


¡ï¡ï¡ï¡ï¡ï ÎåÐǼ¶,ÓÅÐãÍÆ¼ö

very good
13Â¥2009-04-18 22:47:02
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

laidzh

Ìú¸Ëľ³æ (ÕýʽдÊÖ)


¡ï¡ï¡ï ÈýÐǼ¶,Ö§³Ö¹ÄÀø

xiexie!!!!
17Â¥2009-04-19 07:42:18
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jack_ma

Ìú¸Ëľ³æ (ÕýʽдÊÖ)


¡ï¡ï¡ï¡ï¡ï ÎåÐǼ¶,ÓÅÐãÍÆ¼ö

ллÚÀ
18Â¥2009-04-19 07:45:47
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zhangh123

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)


,thank you
19Â¥2009-04-19 08:49:02
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÇúÔµ

ľ³æ (³õÈëÎÄ̳)


¡ï¡ï¡ï¡ï¡ï ÎåÐǼ¶,ÓÅÐãÍÆ¼ö

Õâ¸öµÃ¿´¿´
21Â¥2009-04-19 09:54:20
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bslt325

ľ³æ (СÓÐÃûÆø)


¡ï¡ï¡ï ÈýÐǼ¶,Ö§³Ö¹ÄÀø

ding!
23Â¥2009-04-19 12:21:04
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Co.H

½ð³æ (СÓÐÃûÆø)


¡ï¡ï¡ï ÈýÐǼ¶,Ö§³Ö¹ÄÀø

hao hao hao !
25Â¥2009-04-19 17:36:22
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