Researchers have developed a 'coloring-by-shrinking' method to print arbitrary 3D microscopic objects exhibiting structural colors. The design consisted of woodpile photonic crystals with varying lattice constants as the 3D building blocks. These structures remain colorless until they are heat treated, causing them to shrink and manifest color, a result of their lattice constants shrinking down below the wavelength of visible light. The team printed a colorful microscopic Eiffel Tower with structural colors, demonstrating feature sizes smaller than 100 nm.
from Top Technology News -- ScienceDaily https://ift.tt/2nQ09vW
Wednesday 2 October 2019
Structural color printing of 3D microscale objects by shrinking photonic crystals
Posted By: Unknown - October 02, 2019About Unknown
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