[Ben Bartlett] recently got engaged, and the proposal had a unique bit of help in the form of a 3D-printed hexagonal mirror array, whose mirrors are angled just right to spell out a message with th… ...

This is the actual 3D printable hexagonal mirror array created by Mr. Bartlett. There are three materials: 1 inch (about 2.54 cm) hexagonal mirror tile, PLA filament used in 3D printers, and adhesive.

Webb’s first image was released last week, and in that image, you can see the 18 points of light which represent the same star imaged 18 times, due to the 18 hexagonal segments which make up the ...

Pores in thin films tend to lie in the plane of the substrate, which makes it impractical for applications where diffusion into the pores is necessary. Nanometre-scale epitaxy on a patterned ...