Nanostructured friction enhancement using fabricated microstructure
First Claim
1. A fabricated microstructure to adhere in shear to a contact surface, the fabricated microstructure comprising:
- a substrate; and
a plurality of nano-fibers attached to the substrate, wherein the nano-fibers have an elasticity modulus E, an interfacial energy per unit length of contact w, a length L, a radius R, and are oriented at an angle θ
o relative to the substrate, and wherein the length L of the nano-fibers is greater than 0.627θ
o R2(E/w)1/2 with θ
o in radians.
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Accused Products
Abstract
Described herein are fabricated microstructures to adhere in shear to a contact surface. A fabricated microstructure comprises a substrate and a plurality of nano-fibers attached to the substrate. The nano-fibers have an elasticity modulus E, an interfacial energy per unit length of contact w, a length L, a radius R, and are oriented at an angle θo relative to the substrate. The length L of the nano-fibers is greater than 0.627θo R2(E/w)1/2 with θo in radians. Also described herein is a method of forming a fabricated microstructure to adhere in shear to a contact surface and a method of adhering in shear a fabricated microstructure to a contact surface.
76 Citations
20 Claims
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1. A fabricated microstructure to adhere in shear to a contact surface, the fabricated microstructure comprising:
-
a substrate; and
a plurality of nano-fibers attached to the substrate, wherein the nano-fibers have an elasticity modulus E, an interfacial energy per unit length of contact w, a length L, a radius R, and are oriented at an angle θ
o relative to the substrate, andwherein the length L of the nano-fibers is greater than 0.627θ
o R2(E/w)1/2 with θ
o in radians. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of forming a fabricated microstructure to adhere in shear to a contact surface, comprising:
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forming a substrate; and
forming a plurality of nano-fibers attached to the substrate, wherein the nano-fibers have an elasticity modulus E, an interfacial energy per unit length of contact w, a length L, a radius R, and are oriented at an angle θ
o relative to the substrate, andwherein the length L of the nano-fibers is greater than 0.627θ
o R2(E/w)1/2 with θ
o in radians. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A method of adhering in shear a fabricated microstructure to a contact surface, comprising:
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obtaining a a substrate having a plurality of nano-fibers attached to the substrate, wherein the nano-fibers have an elasticity modulus E, an interfacial energy per unit length of contact w, a length L, a radius R, and are oriented at an angle θ
o relative to the substrate, and wherein the length L of the nano-fibers is greater than 0.627θ
o R2(E/w)1/2 with θ
o in radians; and
placing the substrate having the plurality of nano-fibers on the contact surface.
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Specification