These kinds of metamaterials will really open the door to many new applications deemed impossible before. I am curious how (or if) manufacturing these materials at scale will be possible tho.
the tool they used is basically a nanoscale version of a 3D printer that uses UV epoxy. Essentially using a laser focused through a high numerical aperture microscope to focus light and cure the epoxy (there's some nonlinear action here but it isn't that important).
The key point here being that it is a serial process where a single spot is rastered over the sample, unlike conventional optical lithography which is an area illuminating parallel process.
These kinds of metamaterials will really open the door to many new applications deemed impossible before. I am curious how (or if) manufacturing these materials at scale will be possible tho.
the tool they used is basically a nanoscale version of a 3D printer that uses UV epoxy. Essentially using a laser focused through a high numerical aperture microscope to focus light and cure the epoxy (there's some nonlinear action here but it isn't that important).
The key point here being that it is a serial process where a single spot is rastered over the sample, unlike conventional optical lithography which is an area illuminating parallel process.