Figure 2
From: Microtubule asters as templates for nanomaterials assembly
FESEM images of cellulose hydrolyzed by sulfuric acid for 90 min (a) bottom of suspension (b) top of suspension. Cellulose suspension was dried overnight in oven at 37°C to remove moisture. The resulting film was sputter coated with gold to prevent charging. FESEM accelerating voltage was 2 kV. Scale bar for (a) is 10 μm and for (b) is 100 nm.