Posted on Mar 28 2014 - 3:09am by admin
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We finally got the new sample holders for the atom probe. They allow us to do a variety of things, most of all they fit into a lot of different machines (atom probe, TEM, FIB, SEM…) and they have a three digit code on them that allows us to uniquely identify each individual sample within the lab. The new series of Holders is also designed for wire shaped samples...

Posted on Feb 22 2014 - 4:41am by admin
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Hi all, I can see that a lot of you atom probers out there are downloading my programs and are hopefully using them. One thing that I would really like is to get a discussion about these algorithms going. SO PLEASE COMMENT! Even if its just a: ” your code can do this, but I really need that”. I have a lot more code than there is on here, so I may just be able to build an analysis for you in an afternoon that answers a question or I even already have it ready, but haven’t gotten around to posting it. One of my goals with...

Arguably one of the most frequently used analysis and visualisation tools in atom probe are marching cubes iso-surfaces. I don’t think most people realise how simple the programs behind them actually are. So here they are, one again in Matlab for you to play around with. Voxelisation: Iso-surfaces are actually just a visualisation of voxels, much like height...

One of the most frequent problems I encounter when analysing or visualising my data is that of shape clipping. I have already given out a shape clipping tool for convex objects, but I was really after a simple one that can deal with all sorts of objects in a robust way. WHAT IT DOES: You can use any shape (open, closed, only partially going through the dataset…)...

Hi all, was time to post something again…. Since I was asked sample preparation questions about atom probe samples by a number of people, I decided to just put the guide that I made for an internal workshop a while ago available online. I hope it helps you all to avoid having to learn things the slow trial and error way.   ...

Posted on Aug 20 2013 - 6:15pm by admin
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One of the things that annoyed me a lot in APT was only having the ability to clip APT data with geometric primitives. Here is a little tool that I have put together based on a containment test on the Mathworks file exchange, that can clip a dataset by any convex shape. If anyone has a good non-convex containment test, let me know. As an input one can use other points...

I am currently visiting Henning Galinski at Harvard’s School of Engineering and Applied Sciences. As a kick-off, I gave an introductory talk about atom probe, what it can do for nano-tech research and showed some of our research in that area. A special thanks goes to Prof. David Bell and Dr. Andrew Magyar for the opportunity to present.   As promised, the key slides are available for download from this page. ...

Posted on Aug 19 2013 - 2:10pm by admin
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There is a new page that has attracted a lot of attention in the 3D community: Sketchfab. It is a webpage that allows you to upload your 3D models (e.g. isosurfaces) and display them interactively on the web. You can also embed them in your webpage just like a youtube video clip. Unfortunately I don’t think it does particles (halo material), which would be great...

Posted on Aug 19 2013 - 1:50pm by admin
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Hi folks, I have been working on my openVA code again and a release of version 0.1 is coming closer. It is coded in Matlab, so you can modify the code, improve and most importantly build you own analysis that suits your needs. It will contain the following: xml range editor import – export utilities isosurfaces DCOM (Blender Python) shape clipping (convex) (local)...