Wenzel-cassie glove
A glove with an enhanced gripping textured surface is disclosed herein. In preferred embodiments, the glove contains a palm region adapted to cover the palm of a person's hand, a thumb region extending outwardly from the palm region, an index finger region disposed adjacent the thumb region, a middle finger region adjacent the index finger region, a ring finger region adjacent the middle finger region, and a little finger region adjacent the ring finger region with each region containing a textured surface. In preferred embodiments, the textured surface is formed by a plurality of dimensionally hierarchical structures superimposed in layers. The textured surface of the invention, when in contact with wet tissue, repels water at a first texture layer and traps tissue at a second texture layer, such that when in tissue contact, especially exudative tissue, tissue fixatively localizes to the glove surface.
1. A microstructured surface comprising:
a thin film substrate having a first side and a second side, wherein at least a portion of the thin film substrate comprises a hierarchical microstructure pattern disposed about the thin film substrate;
the hierarchical microstructure pattern comprising a first set of microstructures and a second set of microstructures, the second set of microstructures being smaller than the first set of microstructures, and wherein a plurality of the second set of microstructures is disposed on each of the first set of microstructures.
2. The microstructured surface of claim 1 , wherein the hierarchical microstructure pattern further comprises a third set of microstructures, wherein the third set of microstructures is smaller than the second set of microstructures, and a plurality of the third set of microstructures is disposed on each of the plurality of the second set of microstructures.
3. The microstructured surface of claim 1 , wherein the hierarchical microstructure pattern is disposed on the first side of the thin film substrate.
4. The microstructured surface of claim 3 , wherein the hierarchical microstructure pattern is disposed on the second side of the thin film substrate.
5. The microstructured surface of claim 1 , wherein the first set of microstructures are from 25 microns to 1000 microns in height, and the second set of microstructures are from 5 microns to 100 microns in height.
6. The microstructured surface of claim 5 , wherein the third set of microstructures are from 1 micron to 10 microns in height.
7. The microstructured surface of claim 1 , wherein the first set of microstructures are from 25 microns to 1000 microns in width, and the second set of microstructures are from 5 microns to 100 microns in width.
8. The microstructured surface of claim 7 , wherein the third set of microstructures are from 1 micron to 10 microns in width.
9. The microstructured surface of claim 1 , wherein the first set of microstructures have a pitch between adjacent microstructures of 100 microns to 1000 microns, and the second set of microstructures have a pitch between adjacent microstructures of 10 microns to 100 microns in width.
10. The microstructured surface of claim 9 , wherein the third set of microstructures have a pitch from 1 micron to 10 microns in width.
11. The microstructured surface of claim 1 , wherein the thin film substrate is a glove.
12. The microstructured surface of claim 1 , wherein the microstructure pattern is configured to generate a Wenzel Cassie wetting state.
13. The microstructured surface of claim 1 , wherein the microstructure pattern generates at least 76 gm/cm 2 of force as tested using the moist meat testing method.
14. The microstructured surface of claim 1 , wherein the microstructure pattern generates at least 118 gm/cm 2 of force as tested using the moist meat testing method.