Abstract:
Disclosed herein is a method of fabricating a three-dimensional patterned structure using an imprint lithography process and a photolithography process, in which the height of a residual photoresist layer, which is problematic to control, is controlled by controlling only a process time in an imprint lithography process, and then a photolithography process is additionally performed, thus fabricating a new three-dimensional patterned structure without performing an additional process for removing the residual photoresist layer. The method of fabricating a three-dimensional patterned structure includes: (a) depositing a photoresist on a substrate through spin coating; (b) imprinting the deposited photoresist using a mold having a predetermined pattern at a predetermined temperature and pressure to fabricated a structure; and (c) providing a photo mask having a predetermined pattern on the fabricated structure and then exposing and developing the structure to form a three-dimensional patterned structure having a specific pattern.
Abstract:
A method for patterning a surface includes providing a first layer of mechanically deformable material having a first surface. A second layer of mechanically deformable material is placed on the first surface. At least a portion of the second layer is controllably displaced to form at least one patterned void through the second layer.
Abstract:
Nano-scale devices (200', 300) and methods (100) provide reduced feature dimensions of features on the devices. A surface of a device substrate (202, 202', 302, 302a) having a pattern of spaced apart first nanowires (202, 202', 304) is consumed (110), such that a dimension of the first nanowires (202', 304) is reduced (100). A second nanowire (224, 324) is formed in a trench or gap (306) between adjacent ones of the first nanowires (202, 202', 304), such that the nano-scale device includes a set of features that includes the first nanowires (202', 304) with the reduced dimension and the second nanowire (224, 324) spaced from the adjacent first nanowires by sub-trenches (226, 326).
Abstract:
Nano-scale devices (200', 300) and methods (100) provide reduced feature dimensions of features on the devices. A surface of a device substrate (202, 202', 302, 302a) having a pattern of spaced apart first nanowires (202, 202', 304) is consumed (110), such that a dimension of the first nanowires (202', 304) is reduced (100). A second nanowire (224, 324) is formed in a trench or gap (306) between adjacent ones of the first nanowires (202, 202', 304), such that the nano-scale device includes a set of features that includes the first nanowires (202', 304) with the reduced dimension and the second nanowire (224, 324) spaced from the adjacent first nanowires by sub-trenches (226, 326).
Abstract:
Methods for replication and lift-off of micro/nanostructures in single or multilayer thin films from a master substrate at wafer scale. The methods utilize polymeric materials with low-elastomeric properties to enhance the mechanical strength of the thin films during the replication and liftoff process from a master substrate, wherein the flexible polymer can have stand alone integrity. The master substrate can contain a surface relief which has a desired pattern to be replicated.
Abstract:
The invention relates to a device comprising a base substrate(700) with a micro component (702) attached thereto. Suitably it is provided with routing elements (704) for conducting signals to and from said component (702). It also comprises spacer members (706) which also can act as conducting structures for routing signals vertically. There is a capping structure (708) of a glass material, provided above the base substrate (700), bonded via said spacer members (706), preferably by eutectic bonding, wherein the capping structure (708) comprises vias (710) comprising metal for providing electrical connection through said capping structure. The vias can be made by a stamping/pressing method entailing pressing needles under heating to soften the glass and applying pressure, to a predetermined depth in the glass. However, other methods are possible, e-g- drilling, etching, blasting.
Abstract:
The subject matter described herein relates to methods and systems for fast imprinting of nanometer scale features in a workpiece. According to one aspect, a system for producing nanometer scale features in a workpiece is disclosed. The system includes a die having a surface with at least one nanometer scale feature located thereon. A first actuator moves the die with respect to the workpiece such that the at least one nanometer scale feature impacts the workpiece and imprints a corresponding at least one nanometer scale feature in the workpiece.
Abstract:
The present invention provides a method adhering a layer to a substrate that features defining first and second interfaces by having a composition present between the layer and the substrate that forms covalent bonds to the layer and adheres to the substrate employing one or more of covalent bonds, ionic bonds and Van der Waals forces. In this manner, the strength of the adhering force of the layer to the composition is assured to be stronger than the adhering force of the layer to the composition formed from a predetermined adhering mechanism, i.e., an adhering mechanism that does not include covalent bonding. Additionally, the present invention is directed to a composition of adhering together first and second materials. The composition features a multi-functional reactive compound that includes a backbone group and first and second functional groups; a cross-linker, and a catalyst. The first functional group is responsive to a first actinic energy to form cross-linked molecules and to adhere a subset of the cross-linked molecules to the first material. The second functional group is responsive to a second actinic energy, differing from the first actinic energy to adhere to the second material.
Abstract:
A method of fine-pattern formation in which in forming a pattern, a fine pattern formed in a mold can be transferred to a patterning material in a short time at a low temperature and low pressure and, after the transfer of the fine pattern to the patterning material, the fine pattern formed in the patterning material does not readily deform. The method for fine-pattern formation comprises: a first step in which a mold having a fine structure with recesses/protrusions is pressed against a patterning material comprising a polysilane; a second step in which the patterning material is irradiated with ultraviolet to photooxidize the patterning material; a third step in which the pressing of the mold against the patterning material is relieved and the mold is drawn from the patterning material; and a fourth step in which that surface of the patterning material to which the fine pattern has been transferred is irradiated with an oxygen plasma to oxidize the surface.