Table 1.

Physical dimensions of micron and sub-micron scale silicon pillars. Statistical distributions of PC3 cells that show fine line features after incubation on silicon substrates with various pillar geometries for approximately 72 h. Data spreads correspond to one standard error.

Group	Pillar Shape	Outer Diameter (μm)	Wall Thickness (μm)	Center-to-Center Distance (μm)	Nuclei Inspected	Nuclei with Line Features	% Nuclei with Line Features
1	small C-shape	1.2	--	6.2	55	35	64 ± 6
2	large C-shape	2.7	--	7.6	38	17	45 ± 8
3	hollow	5.6	1.3	10.5	28	5	18 ± 7