| 查看: 454 | 回复: 2 | |||
| 当前主题已经存档。 | |||
hslining木虫 (正式写手)
|
[交流]
2009年Nature上关于非晶微成形文章
|
||
|
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. http://www.nature.com/nature/journal/v457/n7231/full/nature07718.html [ Last edited by hslining on 2009-9-10 at 15:15 ] |
回复此楼» 猜你喜欢
考博
已经有3人回复
-
有没有快的中文核心比较快录用的，纳米材料光催化
已经有4人回复
-
本人42，博士刚毕业，现在找不到工作，怎么办？:(
已经有21人回复
-
河北省自然基金
已经有6人回复
-
有人投过CCC中国控制会议吗？
已经有3人回复
-
3,4-二羟基苯乙酮如何纯化？
已经有5人回复
-
国基评审
已经有10人回复
-
2026-博士申请
已经有4人回复
-
考研调剂
已经有3人回复
 |
2楼2009-03-04 17:03:10
butterfly_003
禁虫 (小有名气)
|
本帖内容被屏蔽 |
3楼2009-03-19 13:54:29