摘要:
Photonic crystal apparatus and a method for fabricating a photonic crystal apparatus. The photonic crystal apparatus includes a photonic crystal having a dielectric body formed of a first dielectric material having relatively high index of refraction, and a periodic lattice in the dielectric body formed of a second dielectric material having a relatively low index of refraction. The second dielectric material comprises a solid-state dielectric material having a dielectric coefficient of about 2.7 or lower for providing a relatively large contrast between the index of refraction of the dielectric body and the index of refraction of the periodic lattice.
摘要:
A method of forming a layered structure comprising a domain pattern of a self-assembled material utilizes a negative-tone patterned photoresist layer comprising non-crosslinked developed photoresist. The developed photoresist is not soluble in an organic casting solvent for a material capable of self-assembly. The developed photoresist is soluble in an aqueous alkaline developer and/or a second organic solvent. A solution comprising the material capable of self-assembly and the organic casting solvent is casted on the patterned photoresist layer. Upon removal of the organic casting solvent, the material self-assembles, thereby forming the layered structure.
摘要:
A method of forming a material. A self-assembling block copolymer that includes a first block species and a second block species respectively characterized by a volume fraction of F1 and F2 with respect to the self-assembling block copolymer is provided. At least one crosslinkable polymer that is miscible with the second block species is provided. The self-assembling block copolymer and the at least one crosslinkable polymer are combined to form a mixture. The mixture having a volume fraction, F3, of the crosslinkable polymer, a volume fraction, F1A, of the first block species, and a volume fraction, F2A, of the second block species is formed. A material having a predefined morphology where the sum of F2A and F3 were preselected is formed.
摘要:
A first nanoscale self-aligned self-assembled nested line structure having a sublithographic width and a sublithographic spacing and running along a first direction is formed from first self-assembling block copolymers within a first layer. The first layer is filled with a filler material and a second layer is deposited above the first layer containing the first nanoscale nested line structure. A second nanoscale self-aligned self-assembled nested line structure having a sublithographic width and a sublithographic spacing and running in a second direction is formed from second self-assembling block copolymers within the second layer. The composite pattern of the first nanoscale nested line structure and the second nanoscale nested line structure is transferred into an underlayer beneath the first layer to form an array of structures containing periodicity in two directions.
摘要:
Compositions are disclosed having the formula (3): [C′]k[Ta(O2)x(L′)y] (3), wherein x is an integer of 1 to 4, y is an integer of 1 to 4, Ta(O2)x(L′)y has a charge of 0 to −3, C′ is a counterion having a charge of +1 to +3, k is an integer of 0 to 3, L′ is an oxidatively stable organic ligand having a charge of 0 to −4, and L′ comprises an electron donating functional group selected from the group consisting of carboxylates, alkoxides, amines, amine oxides, phosphines, phosphine oxides, arsine oxides, and combinations thereof. The compositions have utility as high resolution photoresists.
摘要翻译:公开了具有式(3)的组合物:[C'] k [Ta(O 2)x(L')y](3)其中x是1至4的整数,y是1至4的整数, Ta(O 2)x(L')y具有0至-3的电荷,C'是具有+1至+3的电荷的抗衡离子,k是0至3的整数,L'是氧化稳定的有机物 配体的电荷为0至-4,L'包括选自羧酸盐,醇盐,胺,氧化胺,膦,氧化膦,胂氧化物及其组合的给电子官能团。 该组合物具有作为高分辨率光致抗蚀剂的作用。
摘要:
A layered structure comprising a self-assembled material is formed by a method that includes forming a photochemically, thermally and/or chemically treated patterned photoresist layer disposed on a first surface of a substrate. The treated patterned photoresist layer comprises a non-crosslinked treated photoresist. An orientation control material is cast on the treated patterned photoresist layer, forming a layer containing orientation control material bound to a second surface of the substrate. The treated photoresist and, optionally, any non-bound orientation control material are removed by a development process, resulting in a pre-pattern for self-assembly. A material capable of self-assembly is cast on the pre-pattern. The casted material is allowed to self-assemble with optional heating and/or annealing to produce the layered structure.
摘要:
A method for producing surface features and an etch masking method. A combination is provided of a block copolymer and additional material. The block copolymer includes a first block of a first polymer covalently bonded to a second block of a second polymer. The additional material is miscible with the first polymer. A film is formed of the combination directly onto a surface of a first layer. Nanostructures of the additional material self-assemble within the first polymer block. The film of the combination and the first layer are etched. The nanostructures have an etch rate lower than an etch rate of the block copolymer and lower than an etch rate of the first layer. The film is removed and features remain on the surface of the first layer. Also included is an etch masking method where the nanostructures mask portions of the first layer from said etchant.
摘要:
A nanoporous material exhibiting a lamellar structure is disclosed. The material comprises three or more substantially parallel sheets of an organosilicate material, separated by highly porous spacer regions. The distance between the centers of the sheets lies between 1 nm and 50 nm. The highly porous spacer regions may be substantially free of condensed material. For the manufacture of such materials, a process is disclosed in which matrix non-amphiphilic polymeric material and templating polymeric material are dispersed in a solvent, where the templating polymeric material includes a polymeric amphiphilic material. The solvent with the polymeric materials is distributed onto a substrate. Organization is induced in the templating polymeric material. The solvent is removed, leaving the polymeric materials in place. The matrix polymeric material is cured, forming a lamellar structure.
摘要:
Disclosed are methods of forming polymer structures comprising: applying a solution of a block copolymer assembly comprising at least one block copolymer to a neutral substrate having a chemical pattern thereon, the chemical pattern comprising alternating pinning and neutral regions that are chemically distinct and have a first spatial frequency given by the number of paired sets of pinning and neutral regions along a given direction on the substrate; and forming domains of the block copolymer that form by lateral segregation of the blocks in accordance with the underlying chemical pattern, wherein at least one domain of the block copolymer assembly has an affinity for the pinning regions, wherein a structure extending across the chemical pattern is produced, the structure having a uniform second spatial frequency given by the number of repeating sets of domains along the given direction that is at least twice that of the first spatial frequency.
摘要:
Glassy carbon nanostructures are disclosed that can be used as electrode materials in batteries and electrochemical capacitors, or as photoelectrodes in photocatalysis and photoelectrochemistry devices. In some embodiments channels (e.g., substantially cylindrically-shaped pores) are formed in a glassy carbon substrate, whereas in other embodiments, ridges are formed that extend along and over a glassy carbon substrate. In either case, a semiconductor and/or metal oxide may be deposited over the glassy carbon to form a composite material.