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f***r
发帖数: 344 | 2 XRD, ESEM, HRTEM, AFM,Raman Spectroscopy, TGA and XPS
I think it's not that easy being able to use all these machines? Especially
the HRTEM, it's forbidden for infrequent users at my place.
Am I too weak? |
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y***e
发帖数: 6082 | 3 还好把，感觉很多人都会所有的，尤其是做无机晶体的
XRD, ESEM, HRTEM, AFM,Raman Spectroscopy, TGA and XPS
I think it's not that easy being able to use all these machines? Especially
the HRTEM, it's forbidden for infrequent users at my place.
Am I too weak? |
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l***o
发帖数: 390 | 4 A postdoctoral researcher is needed to work on the synthesis of nanowires in
the Nanostructures and Reliability Laboratory at the University of South
Carolina (www.me.sc.edu/research/nano). The candidate should have true hands
-one experience with the synthesis of nanowires, AFM, HRTEM, and other
characterization tools. The candidate also needs to construct nanosensors.
Previous experience about nanosensing will be great. If you are interested
in this position, please feel free to contact Prof. |
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w*****a
发帖数: 156 | 5 A postdoc position is available in the Department of Mechanical Engineering at University of Wisconsin, Milwaukee, for conducting research on Atomic Layer Deposition and nano-thin film studies.
A candidate is sought with strong credentials in the following:
1. Intensive experience on Atomic Layer Deposition technology.
2. Hands-on experience with such instruments including Spectroscopic
Ellipsometer, SEM, HRTEM, and AFM.
3. Worked on ALD of materials for any of the following applications:
dielec |
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w*****a
发帖数: 156 | 6 A Postdoc (or Research Associate) opening is available for research on
Atomic Layer Deposition at University of Wisconsin, Milwaukee, supported by multi-million dollar grant through year 2016. The candidate is sought with strong credentials in the following:
* Ph.D. in Engineering/Materials/Chemistry or any related field.
* Intensive research experience on Atomic Layer Deposition.
* Must have hands-on experience on SEM, HRTEM, XPS, XRD, and
Spectrocopic Ellipsometer.
* A highly m... 阅读全帖 |
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C*V
发帖数: 349 | 7 快点联系,今天下班之前必须给editor回信了. |
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n******e
发帖数: 141 | 10 The Little Match Girl
by Farmer
Most terribly cold it was; it snowed, and was nearly quite dark, and
evening - the last evening of the year. In this cold and darkness there
sat in front of the SEM a poor little girl, bareheaded, and with naked
feet. When she went out of the lab, she had a coat on, it is true; but
what was the good of that? It was a huge coat, which she could not even
told us when did it come, so large was it. How could she spare valuable
time to go shopping? Back to the working ... 阅读全帖 |
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D*****9
发帖数: 154 | 11 有没有人认识在做纳米的同学，帮忙转发一下
Title: Post Doctoral Fellow
in Cincinnati, OH
JOB DESCRIPTION FOR THE POSITION OF POST DOCTORAL FELLOW IN THE AREA OF
CARBON NANOTUBE SYNTHESIS AND APPLICATIONS
This position requires knowledge in the field of characterization and
application of carbon nanotubes (CNT). Special skills and experience are
expected from the candidate in this field. In addition, assembling a new CVD
facility and improvement of the existing one will be part of the long term
assignment related to t... 阅读全帖 |
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n*******w
发帖数: 6708 | 12 在找工作,哪位校友有合适的,请告知或者推荐一下,
我的专业是主要做材料的透射电镜(TEM)表征的,也会做些简单的材料制备
(金属和陶瓷材料)
从事这领域的工作有１０年了,
HRTEM, TEM, SAED, STEM, EELS, EDX, Z-contrast image,等等,
学校的做电镜的staff或者大公司的研发的表征部门都行
发到我的站内信箱就行,多谢!!!
我是９７级材料系的,很多朋友是吉大物理系,化学系,还有电子系,计算机系的,
有相关消息,请告知啊,
事成之后,请你吃几顿大餐 |
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D*****9
发帖数: 154 | 13 有没有人认识在Tsinghua-Foxconn Nanotechnology Research Center，或者
department of physics 的同学，帮忙转发一下。
Title: Post Doctoral Fellow
in Cincinnati, OH
JOB DESCRIPTION FOR THE POSITION OF POST DOCTORAL FELLOW IN THE AREA OF
CARBON NANOTUBE SYNTHESIS AND APPLICATIONS
This position requires knowledge in the field of characterization and
application of carbon nanotubes (CNT). Special skills and experience are
expected from the candidate in this field. In addition, assembling a new CVD
facility and improvement of... 阅读全帖 |
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D*****9
发帖数: 154 | 14 【 以下文字转载自 NanoST 讨论区 】
发信人: Dance19 (Dancer19), 信区: NanoST
标 题: University of Cincinnati Postdoc Position (CNT synthesis)
发信站: BBS 未名空间站 (Wed Dec 8 23:29:04 2010, 美东)
Title: Post Doctoral Fellow
in Cincinnati, OH
JOB DESCRIPTION FOR THE POSITION OF POST DOCTORAL FELLOW IN THE AREA OF
CARBON NANOTUBE SYNTHESIS AND APPLICATIONS
This position requires knowledge in the field of characterization and
application of carbon nanotubes (CNT). Special skills and experience are
expected from the candidate... 阅读全帖 |
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c****r
发帖数: 36 | 15 【 以下文字转载自 NanoST 讨论区 】
发信人: cccyer (静化), 信区: NanoST
标 题: 请教下纳米晶的取向问题
发信站: BBS 未名空间站 (Sun Feb 14 19:46:23 2010, 美东)
有个问题，实在一个孔洞里长Pb nanocrystal（1D棒）.如下图所示，左边的那个HRTEM是
一个单晶粒，而且与晶格参数吻合得很好。右边的图显示的是一个孔中有不止一个单晶
粒的
电子衍射，可以看到几种衍射，如{200}, {-311},{2-33}等。现在的问题是，这几个取
向的晶
体是否是同一个取向呢？晶体概念有些糊涂，求教大家了。
这里Pb是立方，Fm-3m空间群，a=4.9505A.
谢谢
图的地址，不知道怎么直接贴图
http://p13.freep.cn/p.aspx?u=v20_p13_p_1002150851099117_0.jpg |
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S**********n
发帖数: 264 | 16
What you see in an image of HRTEM/STEM is not the "movement range" of an
atom. Actually, its effects could be neglected. Diffused intensity in
diffraction patterns might encode some of those information though.
For crystals, potential of atom is radially symmitrical(or close to it) and point spread function of microscope could also be understood as radially symmitrical.
Their convolution tends to result into something with Gaussian shape. |
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n******e
发帖数: 141 | 17 应该说的照中文的写的
The Little Match Girl
by Farmer
Most terribly cold it was; it snowed, and was nearly quite dark, and
evening - the last evening of the year. In this cold and darkness there
sat in front of the SEM a poor little girl, bareheaded, and with naked
feet. When she went out of the lab, she had a coat on, it is true; but
what was the good of that? It was a huge coat, which she could not even
told us when did it come, so large was it. How could she spare valuable
time to go shopping? Back to t... 阅读全帖 |
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f*****n
发帖数: 93 | 18 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。 |
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z****r
发帖数: 245 | 19 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. |
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l**n
发帖数: 1861 | 20 成分:
XPS,EDS
结构:
XRD,SEM,TEM,HRTEM,AFM,FIB
电学性能:
PFM,HP的各种测试仪器,
磁性:
MFM,VSM,SQUID
还有什么,谁来补充,我受专业限制,也就知道这些了. |
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w******t
发帖数: 107 | 21 就是用标准的Hydrothermal啊；加上TMAOH；但是聚不聚不是很清楚；因为我是在Solid
support上做coating，所以不是很在意;在HRTEM下看很多particle都是single
crystal，lattice很好看； |
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x********8
发帖数: 167 | 22 同志们啊，需要看HRTEM还要排队？那就把样品送到我这儿来，300Kv的电镜经常是处于
被冷落到一边啊。我免费为大家提供服务，特别是这样神奇的样品，呵呵。 |
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R****i
发帖数: 2387 | 23 crosssection HRTEM是啥？
今天和以前师兄讨论了结果，他叫我做做这个。 |
|
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R****i
发帖数: 2387 | 25 HRTEM的傅立叶变换就是这么一回事，但是不能说这个就是衍射图。。。
衍射不一样的，有二次衍射，动力学衍射等等。 |
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a*****s
发帖数: 3643 | 26 BET, UV-Vis, TGA, FTIR，DLS,XPS,EDS（EDX），HRTEM.
AFM? |
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m***c
发帖数: 1403 | 27 ......特别精确的particle size非常重要吗？ 1nm似乎都不能叫particle乐，也就是
个cluster,几十个原子。。。 我说的中间大小大概几十到一百个纳米，表面能已经
不是很大了。 这么小的东西，我能想到的只有HRTEM了，想想看，就算看XRD，
particle size的峰（如果有的话）都到了30，40度了，连小角都算不上，呵呵。
TEM |
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T****i
发帖数: 2190 | 28 2nm的Au NP在普通碳膜上的话，HRTEM的衬度已经比较低了
1nm的cluster就更困难
但是如果Z比较高的话用STEM会很清楚 |
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c*s
发帖数: 2145 | 29 I mean, aslong as your pool is large enough, you have chances to see various
orientation of your particles. Thus,you can get meaningful definition of
the particle size/shape. If you are not lucky the particle shape is ill-
defined, you can also give some rough descriptions such as average size and
this is our target, isn;t it? Other techniques are even less capable than
TEM.
regarding your example about icosahedron particles. one definitely should
and have to use HRTEM to confirm the shape first |
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S*****n
发帖数: 6055 | 30 HRTEM要是能看出正20面体估计上science了，老王去年不是弄了个正12面体的nature么？
various
and
assumption |
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c*s
发帖数: 2145 | 31 well, you are right in that it might be difficult to see it using HRTEM for
such small size. BTW, the story of WZL's science is not at all about image.
么？ |
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t****e
发帖数: 329 | 32 我很想问的问题就是XRD上消光的晶面在HRTEM下能出来吗？
其实我们只是把放大倍数提高 操作模式和普通TEM还是一样的
这个会有影响吗？
4 |
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s*********a
发帖数: 113 | 33 You should be able to see it if the zone axis for diffraction is right.
Actually for crystal, the first step for HRTEM is to tilt the sample to
the right zone axis, in which usually we use diffraction pattern for
reference.
Developing the films is somehow annoying, but can you just draw what you
saw
on the screen on some paper, at least it can give you some information. |
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r******9
发帖数: 10 | 34 A postdoctoral researcher is needed to work on the synthesis of nanowires in
the Nanostructures and Reliability Laboratory at the University of South
Carolina ( www.me.sc.edu/research/nano<http://www.me.sc.edu/research/nano>). The candidate should have true hands-on experience with the synthesis of nanowires, AFM, HRTEM, and other characterization tools. The candidate also needs to construct nanosensors. Previous experience about nanosensing and nanomechanical testing will be great. If you are |
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w***8
发帖数: 465 | 35 你说的NL是nano letters麽?晕咯,人家快10啦,JPCC出来应该最多和JPCB差不多吧.
不看因子的话,我也觉得NL上的paper比JPCC上的漂亮一些,虽然个人觉得NL拼设备的
成分太多,到处都是HRTEM的漂亮的图.
如果可以,我宁愿那我的两篇JPCC换一篇NL... |
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R******J
发帖数: 40 | 36 大家遇到过吗? 我做的是copper, TEM看monodispersity很好, 但是XRD没有peak,
HRTEM想看晶格也比较困难... |
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m*******c
发帖数: 9 | 38 they are not the same. I could not see your images, but {200}, {-311},{2-33
} are not the same at all for any space group.
HRTEM是 |
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d*****3
发帖数: 3702 | 39 BSI的放大倍数是不是比较少吧？和SEI相比；
EDS可能更适合吧， 或者上HRTEM |
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w*****a
发帖数: 156 | 40 A postdoc position is available in the Department of Mechanical
Engineering at University of Wisconsin, Milwaukee, for conducting research
on Atomic Layer Deposition and nano-thin film studies.
A candidate is sought with strong credentials in the following:
1. Intensive experience on Atomic Layer Deposition technology.
2. Hands-on experience with such instruments including Spectroscopic
Ellipsometer, SEM, HRTEM, and AFM.
3. Worked on ALD of materials for any of the following applications:
dielec |
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d*****3
发帖数: 3702 | 41 试试RAMAN， 如果你的样品是否结晶有明显RAMAN信号的话；
HRTEM加上ED可能也行 |
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D*****9
发帖数: 154 | 42 Title: Post Doctoral Fellow
in Cincinnati, OH
JOB DESCRIPTION FOR THE POSITION OF POST DOCTORAL FELLOW IN THE AREA OF
CARBON NANOTUBE SYNTHESIS AND APPLICATIONS
This position requires knowledge in the field of characterization and
application of carbon nanotubes (CNT). Special skills and experience are
expected from the candidate in this field. In addition, assembling a new CVD
facility and improvement of the existing one will be part of the long term
assignment related to this position. For cha... 阅读全帖 |
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D*****9
发帖数: 154 | 43 没有关系的，不用每样有hands-on的经验，有的时候不一定要自己亲手操作。
HRTEM 一般有专职 technician帮着做，不过他偷懒的时候就得自己上了。
实验室拿到million$funding, 学校还有cost share的support，这个项目最长有5年，
期间和之后也可能有其他的项目进来。
Especially |
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y***e
发帖数: 6082 | 44 为啥博后能pay这么高？
没有关系的，不用每样有hands-on的经验，有的时候不一定要自己亲手操作。
HRTEM 一般有专职 technician帮着做，不过他偷懒的时候就得自己上了。
实验室拿到million$funding, 学校还有cost share的support，这个项目最长有5年，
期间和之后也可能有其他的项目进来。
Especially |
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f***8
发帖数: 571 | 46 没做过HR，只做过一般倍率
很好奇，记得holder加热会产生形变，导致图像漂移的厉害，不知HR下如何成像。如果
等holder稳定了，那做不做in-situ也没什么区别了吧。 |
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h*****5
发帖数: 566 | 49
该装置是一个特别的TEM holder，通过加热一根精细的钨丝来实现原位加热附着在钨丝
上的粉末样品，通过精确控制电流来达到控制粉末样品温度。使用该holder可以原位观
测样品在加热过程中的形貌变化，相变，和化学反应。我们在初步试用中发现样品图像
还是很稳定的，没有漂移，也能看到晶格，只不过contrast不够好。 |
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h*****5
发帖数: 566 | 50 Yes. it is local heating. |
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