Hoowaki, LLC

Nakul Ravikumar

Ralph Allen Hulseman

Cameron L McPherson

A microstructure arrangement having a substrate; a first set of pillars having a cross section area in the range of 10 &#x3bc;mto 400 &#x3bc;mand a pitch in the range of 20 &#x3bc;m to 1000 &#x3bc;m; a second set of pillars disposed on said first set of pillars having a cross section area less than that of the pillars in said first set of pillars; wherein said second set of pillars are defined by pillars each having a cross section width from 0.5 &#x3bc;m to 100 &#x3bc;m and a pitch in the range of 1 &#x3bc;m to 200 &#x3bc;m; and, wherein said first and second set of pillars are configured to cooperate to have a physical property of a grip force in excess of 50.0N with a contact area of 25% or less, as determined by the friction testing method.

Microstructure arrangement for gripping low coefficient of friction materials

A microstructure arrangement for gripping low coefficient material comprising: a substrate disposed on a gripping surface; a set of pillars disposed on the substrate; and, wherein the set of pillars have the physical property of a grip force in excess of 50.0N with a contact area of 25% or less as determined by the friction testing method. A first set of pillars can be disposed on the substrate having a cross section area in the range of 100 &#x3bc;mto 160,000 &#x3bc;m, height relative to the substrate in the range of 10 &#x3bc;m to 400 &#x3bc;m, and a pitch determined from the center of the pillars, in the range of 20 &#x3bc;m to 1000 &#x3bc;m; and a secondary set of pillars disposed on the first set of pillars having a cross section area less than that of the pillars in the first set of pillars.

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Greenville, SC, United States of America

Nakul Ravikumar