Abstract A method and apparatus for high density nanostructures is provided. The method and apparatus include Nano-compact optical disks, such as nano-compact disks (Nano-CDS). In one embodiment a 400 Gbit/in 2 topographical bit density nano-CD with nearly three orders of magnitude higher than commercial CDS has been fabricated using nanoimprint lithography. The reading and wearing of such Nano-CDS have been studied using scanning proximal probe methods. Using a tapping mode, a Nano-CD was read 1000 times without any detectable degradation of the disk or the silicon probe tip. In accelerated wear tests with a contact mode, the damage threshold was found to be 19 μN. This indicates that in a tapping mode, both the Nano-CD and silicon probe tip should have a lifetime that is at least four orders of magnitude longer than that at the damage threshold.
A method for making a device storing or replicating high density data, the method comprising the steps of: providing a mold having a patterned molding surface, the pattern comprising features of minimum size less than 50 nanometers across the molding surface for imprinting a data pattern having a storage density of at least about 400 Gbit/in 2 for either (a) storing data or (b) replicating data; providing a body including a surface to be molded; imprinting the molding surface pattern on the surface to be molded by heating the surface of the body being molded and pressing the mold and the body together; cooling the imprinted surface; and removing the mold.
Claim 2
Independent Claim
111 words
A method for making a device storing or replicating high density data, the method comprising the steps of: providing a mold having a patterned molding surface, the pattern comprising features of minimum size less than 50 nanometers across the molding surface for imprinting a data pattern having a storage density of at least about 400 Gbit/in 2 for either (a) storing data or (b) replicating data; providing a body including a surface to be molded; imprinting the molding surface pattern on the surface to be molded by heating the surface of the body being molded and pressing the mold and the body together; cooling the imprinted surface; and removing the mold.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the pattern comprises features of minimum size 13 nm or less.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein the pattern is a circular pattern.