I think this may be the article Turberfield mentioned: http://www.nature.com/nature/journal/v525/n7567/full/nature14860.html
also this: http://www.nature.com/nnano/journal/v10/n9/full/nnano.2015.204.html
This talks about 3D scafolded dna origami: http://www.nature.com/nmeth/journal/v8/n3/full/nmeth.1570.html
http://www.futuretimeline.net/blog/2017/12/9.htm
Structural DNA Nanotechnology: State of the Art and Future Perspective
Challenges and opportunities for structural DNA nanotechnology
DNA nanotechnology from the test tube to the cell
DNA origami
William Shih (Harvard) Part 1: Nanofabrication via DNA Origami
DNA Origami with Complex Curvatures in Three-Dimensional Space
DNA bricks/tiles
Complex shapes self-assembled from single-stranded DNA tiles
DNA brick crystals with prescribed depths
Polyhedra Self-Assembled from DNA Tripods and Characterized with 3D DNA-PAINT
Three-Dimensional Structures Self-Assembled from DNA Bricks
Other DNA self-assembly techniques and reviews
Rational design of self-assembly pathways for complex multicomponent structures
Folding DNA to create nanoscale shapes and patterns (2006, Rothemund).
Complex DNA Nanostructures from Oligonucleotide Ensembles
Placement and orientation of individual DNA shapes on lithographically patterned surfaces
Self-assembly of DNA into nanoscale three-dimensional shapes
DNA CAD
Computer-Aided Design of DNA Origami Structures
Computer-assisted design for scaling up systems based on DNA reaction networks
DNA nanostructures: a shift from assembly to applications
Single-molecule analysis
Single-Molecule Mechanochemical Sensing Using DNA Origami Nanostructures