Well, I’m one of those guys who believes a picture is usually worth a ton of words. I’ve got a few images to share here on the matlab code I’ve been working on for reciprocal space mapping in MATLAB. I’m still not 100% on my code right now, so I’m not sharing it for the time-being. In particular, I use an import function for .x00 slices for two-axis scans in the Panalytical/Philips XPert system. If you are using XRDML, skip the files for .x00 import that I have in other posts on this blog. In anycase, without much explanation here are the images…
In the time I’ve been doing my research work at the Univ. of IL, I’ve come across a number of graphs from various past researchers, older papers, stuck on the side of machines (calibration curves), and even hand-drawn or chart-recorder graphs in my numerous projects. The only major problem with those graphs I’ve found is that they aren’t in a digital form for further use with other data (instrument response functions) or to include in your own work as a reference. So, what to do?
Well, there’s an easy solution. It’s not the perfect solution, as it’s a bit slow, I’ll get to that in a second, but it’s a great solution to the problem, and has worked for me a number of times now. To top it off, it’s open-source, donation-ware, and cross-platform: Engauge Digitizer (see post at LifeHacker.com). Don’t let the website and lack of recent updates deter you. Tools that can do what Engauge does are few and far between. So, it is definitely worth a try. Here’s an example of how I’ve used it just the other day (prompting this post- I’ve used it for years now, but the recent use reminded me I should share it with others). [click "More" to see an example use and learn more]
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Also posted in DataVisualization, Materials Science and Engineering, Matlab, OpenSource, Software, Thesis Writing, Work
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Tagged Cross Platform, Data Mining, How To, Linux, Mac OsX, Materials Science and Engineering, Open Source, Software, Thesis Writing, Windows
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October 26, 2008 – 9:43 pm
Boston rocked: I’m writing this on a new iPod Touch! Filmetrics was running a drawing for those who brought samples to test! Big thankyou’s go out to Filmetrics and AVS. I will write more about the conference in a series of posts coming soon. I’m hoping everyone had a great week while I was gone.
October 17, 2008 – 3:53 pm
The society formerly known as the American Vacuum Society (AVS) is holding their international conference in Boston, MA next week! And I’ll be there! [Exciting!] If you are going to be there, drop me a line on the blog and we can snag a coffee or beer together.
The programs and cards sent out may have a familiar image! 
My AFM image of the CuInSe2 Bicrystals I grow in our lab won second place in the Art-Zone competition last year! It was great fun! [Thanks goes to AVS for being a fantastic organization!]
Wish me luck with my talk!!
September 20, 2008 – 10:25 pm
One thing I find extremely helpful in my research, is the ability to download citations for articles my co-workers send. I like to import them into BibDesk and auto-file the journal articles by first-author. Unfortunately, not everyone has Bibtex export abilities. This isn’t too bad, as BibDesk imports most major citation files. One thing that I do abhorr, is when a major company decides not to offer a citation download option! Science Direct is the fellow who gets my wrath this evening. It’s so bad I’ve been looking for other companies who keep track of journals that have downloads for the ones that Science Direct publishes!
I wonder if you pay their absurd journal prices, if you get citation downloads…
For more on Absurd Journal pricing, see: Knuth and “Trapped…”
Well, I’m finally published in my current field. It took a very very long time to get this paper published. All sorts of reasons for the delay. In fact, this work was originally started in 2004 (our first bicrystal was successfully grown in ‘04). During research group meeting, I made an under the breath comment something akin to: “Well, darnit, it’s too bad we can’t study a single grain-boundary, because then everything would be so much easier…” Prof. Rockett looked over to me and smiled: “But, Allen, we can study a single grain-boundary! That’s a great idea!” So, the bicrystal project was started.
We were able to obtain a bicrystal GaAs wafer from Wafer Technology Limited Co. (UK); I requested a bad growth, with crystallites as large as possible. I’ll be forever indebted to the great guys at Wafer Technology for their quick grasp of what I was looking for. After visiting our group in 2006, S. Seibentritt at HMI (now at Lüxenbourg) started similar work.
While this current paper isn’t perfect, it went through numerous revisions. Most of the extensive EBSD calculations didn’t make the paper. Subsequent papers will likely revisit the disorientation discussion.
Unfortunately, there was an error we missed in the proof. The paper is currently missing Figure 2(c): The cross-sectional HRTEM image (the hard work of C. Lei). The image can be found here: Cross-Sectional HREM image of Cu(In,Ga)Se2 bicrystal, hosted at Prof. Angus Rockett’s research group’s webpage.
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