Related by context. Frequent words. (Click for all words.) 59 hollow tubes 59 microfabricated 57 alternating layers 57 manganese oxide 57 threadlike 56 carbides 56 polymerized 56 nonmagnetic 56 nanodots 55 hollow fibers 55 scalloped edges 55 nanoporous 55 DNA helix 55 bundt pan 54 silicon atoms 54 corundum 54 waxy substance 53 concretions 53 honeycomb structure 53 membranous 53 nanosized 53 hexagonal 53 snail shells 53 uraninite 53 micrometre 53 nanorod 53 arils 53 tetrahedron 52 pinholes 52 soft pliable 52 lattices 52 graphitic 52 #/#-inch-thick 52 bilayer 52 whorls 52 onion skins 52 bamboo skewers 52 irregular shapes 52 layers 52 clasts 52 boron nitride 51 graphene sheet 51 anthers 51 agglomerates 51 vacuoles 51 concentric rings 51 salt crystals 51 wooden skewers 51 dipoles 51 vertically stacked 51 hydrocarbon molecules 51 5mm thick 51 xylem 51 SWCNT 51 layered 51 semisolid 51 tonalite 51 siltstones 51 crystalline structure 51 pitchblende 51 bees wax 51 clastic 51 resinous 51 lamina 51 honeycombs 51 aragonite 51 lamellar 51 Lightly spray 51 nanocrystalline 50 Lymph nodes 50 tetrahedral 50 monolayers 50 SWNT 50 caramelized sugar 50 histone proteins 50 finely crushed 50 optical lattice 50 sol gel 50 magnetic beads 50 nanobubbles 50 metallic 50 blebs 50 goethite 50 electrochemically 50 nanometers billionths 50 Spread evenly 50 chondrules 50 chemically inert 50 diffracted 50 stacked vertically 50 #/#-in [001] 50 polymer coated 50 microelectrodes 50 polymer resin 50 laminae 50 zirconium oxide 50 helices 50 Ultraviolet light 50 glasslike 50 hexagons 50 microbeads