Patent ID: 8017218

Claim:
An elastomeric device comprising a body of an elastomeric material, said body having at least one, flat or curved, surface provided with at least one nanoscale indentation extending into said at least one surface and at least one microscale indentation extending into said at least one surface, wherein each indentation extends a depth from a base line being a line where said surface intersects said indentation and wherein each indentation has at the base line a width, an aspect ratio a for each indentation is defined as the depth of that indentation divided by the width of that indentation; a low is the aspect ratio where sagging of an indentation occurs for the elastomeric material, a high is the aspect ratio where collapse of an indentation occurs for the elastomeric material, the nanoscale indentation has a first depth and a first width defining a first aspect ratio, the first width being less than 1 micrometer, the first aspect ratio being between a low and a high , and the microscale indentation has a second depth and a second width defining a second aspect ratio, the second depth being different than the first depth, the second width being greater than 1 micrometer, the second aspect ratio being between a low and a high .