Color gradient filament is fun stuff to play with. It lets you make 3D prints that slowly fade from one color to another along the Z-axis. [David Gozzard] wanted to do some printing with this effect, ...

We know that whatever printer we purchase from the market, it prints in black & white or color. Color ink cartridge normally has cyan, yellow, and magenta inks. It uses these inks to mix the user’s ...

Colloidal photonic glasses offer an appealing way to produce vivid colors without any chemical dyes—but so far, a stubborn optical effect has long prevented them from generating a true red color. Now, ...