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Use "nanopillars" in a sentence
"Though the silicon layer is thin, a photon still has a relatively long path to travel down the length of the nanopillars, and a good chance of transferring its energy to an electron."
"Solasta fabricates on arrays of nanopillars, rather than flat areas, boosting the efficiency of amorphous silicon solar cells to about 10 percent -- still less than crystalline silicon panels, but more than the thin-film amorphous silicon panels on the market today."
"The cells designed by Solasta are built on a substrate forested with long, thin, vertically arrayed nanopillars."