You wouldn’t steal a SAXS machine… Because you can print one! For the last few weeks, I have been playing around with a new little 3D printer in my lab. This one can print structures in ABS plastic, so I thought it would at least be useful for sample holders. Then I started experimenting a bit more… Read more »
Recap time! As the years before, 2014 has been a good year for LaN and me. As you know, this year I moved from a twice monthly post to a mostly weekly post, making this the 56th post this year (if my count is correct). Let’s take a look at some of them. Read more »
Recently, I have become quite fond of open publishing procedures, and am already looking at open publishing outlets such as PLOS One, F1000Research and Science Open. For some publications, however, the standard outlets should work just fine. So we went to J. Appl. Cryst. for our latest “software” publication on the Monte Carlo method, McSAS. Read more »
[ed: Marcus Gallagher-Jones just finished his Ph.D. project on VUV and X-ray lasers for imaging of biological macromolecules]
I was happy to receive an invitation from Brian to write a post for his blog. I can honestly say that I owe a good deal of my knowledge of SAXS from helpful discussions with Brian and from reading LaN. Over the years we’ve shared a country, a workplace, and one more important thing: a scattering geometry. So without further ado I’m delighted to introduce to you the technique which has occupied my time for much of the past four years, Coherent Diffractive Imaging (CDI). Read more »
[note: Unfortunately I have to cancel this trip altogether, due to a serious injury in the family, and will not be able to speak at these occasions]
I will be heading to ILL to join Martin on SANS beamtime. At the same time, I am taking the opportunity to give my 2014 talk twice more. I will be talking thanks to two excellent scientists at ESRF and Université Paris-Sud. Read more »
A little step sideways from small-angle scattering for this week’s post. As you are probably aware by now, I sometimes use the LaN weblog to crystallize ideas into something resembling a coherent story. This is needs to be done now, as I am preparing another presentation (due late January), one that covers a tangential topic from my usual repertoire: a little overview of bad tidings in science. Read more »
Estimating uncertainties on data values has always been an important and under-emphasized part of small-angle scattering. Uncertainties are critical to your data: they tell you what is most likely a real difference, and what is probably just measurement noise. Fortunately, many datasets come complete with data uncertainties, but there are still quite a few cases where this is not the case, or where the provided uncertainty estimates are unrealistic. So what can we do?
Today is another holiday in Japan. There is a tendency here for the national holidays to be on Mondays or Fridays, and there is typically about one per month of those. So I hope you do not mind, but I would like to move the weekly update date to Tuesdays instead.
Mind you, this will be Tuesday in Japan, so if you are reading this in America, you can still read the updates on Monday.
I will not take this opportunity to relax this week, there will be an update tomorrow. Yesterday, a funny thought struck me with respect to error estimation, and I have been playing around a bit to test it. So tomorrow you will have all kinds of error estimating goodness!
See you then!
Today is a day of relief for Dr. Julian Stirling and his eight co-authors (with many looking forward to the response, including Raphaël Lévy). The paper released today opposes ten years of prolific work from a group claiming to have made and observed stripes on the surface of nanoparticles (c.f. Figure 0, Figure 1 in this post). While most of the work revolves around scanning probe microscopy (SPM), small-angle scattering also played a minor role (c.f. Figure 2 and this paper). This, coupled with modern approaches to publication, led to my inclusion in the (otherwise amazing) list of authors. Here is how this came to be.