I just wanted to share some recent developments I find relevant:
Two papers about interlocking DNA nanostructures:
While still far from atomic resolution and still a little jelly floppy like this totally goes into the direction of stiff atomically precise nanorobotics.
I hope that will convince more people that macroscale style machinery actually makes perfectly sense in the nanoscale.
An image out of this paper made it into Wikipedia.
I think it's the first CC licensed image of 3D wiremesh DNA stuff on Wikipedia:
Assuming the uploader "Materialscientist" was one of the creators (unlikely - comment to high res upload says "from PDF")
or had permission from the creators or the upload is tolerated which is not clear from what I find.
I'd love to use that image but as long as I'm not clear about the license I rather not.
On the microfluidics front there's a new website for open source R&D collaboration (created by MIT Media Lab).
I see how this could notably accelerate progress if adopted by the subset of struct-DNA-nanotec (& other foldamer) researchers/developers.