MIT and Nasa engineers demonstrate a new kind of airplane wing

I wonder on the specific amount this could improve overall efficiency. I can't find the source paper, but I bet is possible that this innovation could make winged drones viable for non-militaries.

I guess the paper should be at https://www.liebertpub.com/loi/soro, in the April issue, but that isn’t there yet, so I don’t know whether it’s open access.

I did find a probably related paper at https://iopscience.iop.org/article/10.1088/1361-665X/ab0ea2/... (paywalled)

https://www.liebertpub.com/doi/full/10.1089/soro.2016.0032 (2017) also seems related and is online photos of the structures.