发明申请
US20070243716A1 Selection and deposition of nanoparticles using CO2-expanded liquids
有权
使用二氧化碳膨胀液体选择和沉积纳米颗粒
- 专利标题： Selection and deposition of nanoparticles using CO2-expanded liquids
- 专利标题（中）： 使用二氧化碳膨胀液体选择和沉积纳米颗粒
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申请号： US11237601申请日： 2005-09-27
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公开(公告)号： US20070243716A1公开(公告)日： 2007-10-18
- 发明人: Christopher Roberts , Marshall McLeod , Madhu Anand
- 申请人： Christopher Roberts , Marshall McLeod , Madhu Anand
- 主分类号： H01L21/31
- IPC分类号： H01L21/31
摘要：
A method for size selection of nanostructures comprising utilizing a gas-expanded liquids (GEL) and controlled pressure to precipitate desired size populations of nanostructures, e.g., monodisperse. The GEL can comprise CO2 antisolvent and an organic solvent. The method can be carried out in an apparatus comprising a first open vessel configured to allow movement of a liquid/particle solution to specific desired locations within the vessel, a second pressure vessel, a location controller for controlling location of the particles and solution within the first vessel, a inlet for addition of antisolvent to the first vessel, and a device for measuring the amount of antisolvent added. Also disclosed is a method for forming nanoparticle thin films comprising utilizing a GEL containing a substrate, pressurizing the solution to precipitate and deposit nanoparticles onto the substrate, removing the solvent thereby leaving a thin nanoparticle film, removing the solvent and antisolvent, and drying the film.