About a dozen years ago, I wrote a report on the future of nanomaterials in printing and packaging. I think copies of it may exist today only on my bookshelf, but it has served over that time to inform my opinion on how nanomaterials can be applied to these areas—most recently contributing to piece on these pages a few years back. The basic question: How do you get a nanomaterial onto some packaging cheaply enough that it makes sense for what is essentially a throwaway item?
It has not been easy. But MIT researchers believe they have hit upon a low-cost, robust stamping method that manages to get carbon nanotubes onto a flexible surface so that they can serve as a transistor for controlling individual pixels in high-resolution displays.
In research described in the journal Science Advances, the technique developed for getting the carbon nanotubes onto the surface eschews the use of inkjet printing techniques, which have been thought to be way forward in this application space. Instead they turned to a rather old printing technique: the stamp.