Scientists have constructed functional metalenses that are one-tenth to one-half the thickness of the wavelengths of light that they focus. Their metalenses, which were constructed out of layered 2D materials, were as thin as 190 nanometers -- less than 1/100,000ths of an inch thick.
from Engineering News -- ScienceDaily https://ift.tt/2FqVKYu
Saturday, November 17, 2018
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