S*****n
发帖数: 6055 | |
b*******g
发帖数: 1309 | 2 X-ray should work, there is a Science paper in 2009(?) |
S*****n
发帖数: 6055 | 3 I wish I could do XRD, but your boss asked me to do ED...
【在 b*******g 的大作中提到】
: X-ray should work, there is a Science paper in 2009(?)
|
z****r
发帖数: 245 | 4 看是什么材料，结构稳定的氧化物应该还可以，金属颗粒这么小应该不行，在电子束轰
击下会结构重组。 |
S*****n
发帖数: 6055 | 5 metal np with core-shell structure...the reviewer is crazy...
could you please provide a reference?
【在 z****r 的大作中提到】
: 看是什么材料，结构稳定的氧化物应该还可以，金属颗粒这么小应该不行，在电子束轰
: 击下会结构重组。
|
S*****n
发帖数: 6055 | 6 J. Phys. Chem. B 2003, 107, 7351-7354
The reviewer asked me to follow this paper.
But it seems to me that in this paper they did not do real diffraction. The
(111) patterns are just from an image processing software. Am I right?
【在 z****r 的大作中提到】
: 看是什么材料，结构稳定的氧化物应该还可以，金属颗粒这么小应该不行，在电子束轰
: 击下会结构重组。
|
m***c
发帖数: 1403 | 7 are you claiming a core-shell structure of 2-3 nm particle?
【在 S*****n 的大作中提到】
: metal np with core-shell structure...the reviewer is crazy...
: could you please provide a reference?
|
S*****n
发帖数: 6055 | 8 yes
【在 m***c 的大作中提到】
: are you claiming a core-shell structure of 2-3 nm particle?
|
f*****n
发帖数: 93 | 9 如果光是分析晶面的话, 没有必要做衍射啊，直接 HRTEM，然后 FFT 转换一下也能得
到点阵啊。
【在 S*****n 的大作中提到】
: 多谢讨论，包子酬谢！
|
z****r
发帖数: 245 | 10 看了一下文章，不太清楚是不是FFT，但应该不是ED。整个core-shell结构加起来2-3nm
的话，做ED也不是完全不可以，但可能对仪器要求很高。如果想验证core-shell，尝试
一下EDX或者EELS的线扫描？
The
【在 S*****n 的大作中提到】
: J. Phys. Chem. B 2003, 107, 7351-7354
: The reviewer asked me to follow this paper.
: But it seems to me that in this paper they did not do real diffraction. The
: (111) patterns are just from an image processing software. Am I right?
|
z****r
发帖数: 245 | 11 I have no relevant references in my hand. It is based on my own experience.
I once used one utra HRTEM with a 0.5 A spatial resolution to characterize 2
nm Pt particles. I directly saw surface atoms moving around and even
restruction of crystal structures. You may check papers published by
Christian Kisielowski at LBL. He may publish some papers on this topic.
【在 S*****n 的大作中提到】
: metal np with core-shell structure...the reviewer is crazy...
: could you please provide a reference?
|
m***c
发帖数: 1403 | 12 hard to show by ED. only 4-5 unit cells overall, if it is core-shell, 2-3
unit cells for each phase. dont' know how it would scatter the electrons.
【在 S*****n 的大作中提到】
: yes
|
S*****n
发帖数: 6055 | 13 OK
reviewer asked me to do that
I will just say no
thanks for all discussions
【在 m***c 的大作中提到】
: hard to show by ED. only 4-5 unit cells overall, if it is core-shell, 2-3
: unit cells for each phase. dont' know how it would scatter the electrons.
|
g******e
发帖数: 220 | 14 It may be hard but in principle it is feasible. Even a single layer of atoms
scatter electrons. In my opinion 2-3 nm is perfect for electron diffraction
since there are no dynamical effects.
【在 m***c 的大作中提到】
: hard to show by ED. only 4-5 unit cells overall, if it is core-shell, 2-3
: unit cells for each phase. dont' know how it would scatter the electrons.
|
