Nanopillars (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption On the left is a schematic of a germanium nanopillar array embedded in alumina membrane; on the right are cross-sectional SEM images of a blank alumina membrane with dual-diameter pores; inset shows germanium nanopillars after growth. Credit Images courtesy of Ali Javey Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.