Category Archives: Blog posts
[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 […]
[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. […]
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 […]
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 […]
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 […]
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 […]
Waiting for San Francisco to wake up on their Monday and release the good stuff with chewy centres. Please come back later today It’s up here!
[ed1: Progress on the Everything SAXS book has been good: a framework is now in place with chapters, the revision ID on the title page and even a Makefile and readme. The time approaches to enter some content! ed2: Something cool approaches (next week).] Most of the times we are scrounging for crumbs on the […]
For a while now, I have wanted to write a book about SAXS, introducing the topics, explaining the details, and including many of the more popular posts from this site. Unfortunately, no lucrative old-style book contracts have been proffered, so I will resort to another approach: a living Git-book.
A remark in a recent paper by Dr. Yojiro Oba (currently at KURRI) caught my attention. It discusses which shape assumption can be appropriate to fit a scattering pattern of polydisperse systems. In the paper, the shape assumption is spherical (based on TEM evidence), and a further remark goes as follows: “ Since no q−a […]