Ordered Vertically Oriented Porous Inorganic Films Produced through Solution Processing
Permits features between 2 and 20nm in size and definable pitch. Self-assembled systems offer unparalleled control over material composition and physical properties.
Separation or ultrafiltration in which solutions containing molecules or colloids are passed through a membrane made of templated vertical pores. Can be used for electromagnetic purposes. The properties of the inorganic framework can be modified according the characteristics of the material filling the pores: it can be insulating, semiconducting, or conducting.
Researchers at UCLA have created a technique for producing vertically oriented inorganic pore systems via solution processing. Using this novel procedure, a hexagonal honeycomb structured surfactant or polymer templated inorganic-organic composite is grown on a cubic self-assembled patterned surface to form the vertically aligned pores. Unlike many traditional methods, this innovative procedure can utilize a variety of materials to form the film structure, which enhances substrate versatility. Additionally, the use of a cubic self-assembled liquid crystal system for a substrate to align a hexagonal self-assembled liquid crystal system allows the realization of superior feature size and material control.
Patent Number: US8399057B2
Application Number: US2006449465A
Inventor: Tolbert, Sarah H. | Richman, Erik K.
Priority Date: 8 Jun 2005
Priority Number: US8399057B2
Application Date: 8 Jun 2006
Publication Date: 19 Mar 2013
IPC Current: B05D000300
US Class: 427271 | 264414 | 264425 | 264628 | 427240 | 427256 | 427259 | 427472 | 4302701 | 4302721 | 430325
Assignee Applicant: The Regents of the University of California
Title: Ordered vertically oriented porous inorganic films produced through solution processing
Usefulness: Ordered vertically oriented porous inorganic films produced through solution processing
Summary: The method is used for producing an inorganic film having pores oriented normal to the plane of a surface of the film. The vertical pores can be used for the production of nanowire field effect transistors, nanoscale light emitting diodes, nanowire lasers, and magnetic storage based on stacked magnetic nanocrystals. It can be used in electronic materials including devices such as batteries, solar cells, memory, and even logic switches.
Novelty: Production of inorganic film with vertical pores for e.g. field effect transistor, involves forming pattern of components of contrasting hydrophobicity and/or hydrophilicity, and growing inorganic/organic composite on patterned surface
環保/綠色科技
太陽能電池
State of Development Prototype silica films with 15nm pitch and 10nm diameter pores oriented vertically can be produced using cubic titania as a substrate. Background There exists a wide range of applications for vertically oriented porous films, which can be used for the separation and filtration of solutions and electrical or magnetic contacts. Currently, these films can be produced using such methods as optical lithography and e-beam serial lithography, ion track etching, anodic alumina, aligned diblock copolymers, and various surfactant or polymer template materials. However, these techniques possess drawbacks including: scaling limitations, reduced throughput, and substrate restrictions. A technique for developing porous films free of the disadvantages found in the state of the art would be highly desirable. Additional Technologies by these Inventors Tech ID/UC Case 20486/2005-728-0 Related Cases 2005-728-0
美國
