w********h 发帖数: 12367 | 1 Mesophases of Diblock Copolymers in Solution
Collaborators – Prof. R.A. Register, Chiajen Lai
Funding - National Science Foundation (Princeton Center for Complex
Materials)
Amphiphiles, such as surfactants and block copolymers, spontaneously
self-assemble in order to minimize interactions between their incompatible
components. In the bulk or concentrated solutions highly regular structures
with periodicity in the nanometer range emerge, according to principles that
are reasonably well-defined f |
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g******3 发帖数: 6 | 3 Carbon fiber中的一类,mesophase pitch based carbon fiber导电性是比较高的,但
高不到铜。不做电相关的,不是很懂低频和高频的导电性,但carbon fiber给出的性能
参数一般就是万用表直接测出来的电阻转换成的resistivity。最高的一种k1100
carbon fiber大约是1.5 micro ohm-m,比铜还是要大两个数量级的 |
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g******3 发帖数: 6 | 4 Carbon fiber中的一类,mesophase pitch based carbon fiber导电性是比较高的,但
高不到铜。不做电相关的,不是很懂低频和高频的导电性,但carbon fiber给出的性能
参数一般就是万用表直接测出来的电阻转换成的resistivity。最高的一种k1100
carbon fiber大约是1.5 micro ohm-m,比铜还是要大两个数量级的 |
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w******t 发帖数: 107 | 5 哎呀妈呀,俺理解错了,不好意思,刚才瞎忽悠了~~~
至于合成多孔碳,那要看你具体想做啥“多孔”碳了,具体说:
分类甲:microporous
好像是CVD法用丙烷(?)做precursor和Zeolite NaY做hard template,没重复
过,
也记不得是发在啥地方的文章了;不过你按照上面的关键字搜搜可能能找到
分类乙:mesoporous
(1)Amorphous wall的:
-Nanocasting,看Ryoo的文章,最早的一篇在J. Phys. Chem. B上,1999年;
-Triconstituent,看赵东元老师的文章,JACS 2006
-Direct synthesis,也看赵老师的文章,太多了。。。JACS,ACIE上都有
(2)Graphitic wall的
基本上都是nanocasting出来的;我试过Robert Mokaya的CVD方法,用SBA-15
做hard
template,能重复;其它的,有用mesophase pitch啊,还有什么多苯环的
precu |
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y**i 发帖数: 44 | 6 2009 Liquid Crystals 36 (1), pp. 75-92
Thermodynamic modelling of carbonaceous mesophase mixtures |
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