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    • 6. 发明申请
    • Selection and deposition of nanoparticles using CO2-expanded liquids
    • 使用二氧化碳膨胀液体选择和沉积纳米颗粒
    • US20070243716A1
    • 2007-10-18
    • US11237601
    • 2005-09-27
    • Christopher RobertsMarshall McLeodMadhu Anand
    • Christopher RobertsMarshall McLeodMadhu Anand
    • H01L21/31
    • C30B7/00B05D1/18B05D2401/32B05D2401/90B82Y30/00C30B7/005C30B29/605Y10S977/70Y10S977/773
    • 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.
    • 纳米结构尺寸选择的方法包括利用气体膨胀液体(GEL)和受控压力来沉淀所需尺寸的纳米结构体,例如单分散。 GEL可以包含CO 2反溶剂和有机溶剂。 该方法可以在包括构造成允许液体/颗粒溶液移动到容器内的特定所需位置的第一开放容器的设备中进行,第二压力容器,位置控制器,用于控制颗粒和溶液的位置 第一容器,用于向第一容器添加抗溶剂的入口,以及用于测量加入的抗溶剂量的装置。 还公开了一种用于形成纳米颗粒薄膜的方法,其包括使用含有底物的GEL,将溶液加压沉淀并将纳米颗粒沉积到基底上,除去溶剂从而留下薄的纳米颗粒膜,除去溶剂和反溶剂,并干燥该膜 。