WO2016094384A2 - Assemblage de nanoéléments au niveau d'une interface solvant polaire-non polaire - Google Patents

Assemblage de nanoéléments au niveau d'une interface solvant polaire-non polaire Download PDF

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Publication number
WO2016094384A2
WO2016094384A2 PCT/US2015/064459 US2015064459W WO2016094384A2 WO 2016094384 A2 WO2016094384 A2 WO 2016094384A2 US 2015064459 W US2015064459 W US 2015064459W WO 2016094384 A2 WO2016094384 A2 WO 2016094384A2
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Prior art keywords
nanoelements
substrate
solvent
interface
assembled
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PCT/US2015/064459
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English (en)
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WO2016094384A3 (fr
Inventor
Asli Sirman
Aditi HALDER
Ahmed Busnaina
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Northeastern University
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Publication of WO2016094384A3 publication Critical patent/WO2016094384A3/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
    • B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • B05D1/20—Processes for applying liquids or other fluent materials performed by dipping substances to be applied floating on a fluid
    • B05D1/202—Langmuir Blodgett films (LB films)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
    • B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
    • B22F2007/042—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal characterised by the layer forming method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites

Definitions

  • the invention was developed with financial support from Grants 0425826 and 0832785 from the National Science Foundation. The U.S. Government has certain rights in the invention.
  • Nanoelement assembly has gained wide-spread interest due to their applications in the fields of nanoelectronics, optical devices, single electron transistors, and sensors, as well in fundamental research.
  • Existing methods for nanoelement assembly include solvent evaporation, template-assisted self- assembly, use of charge-stabilized nanoparticles, and Langmuir-Blodgett or Langmuir-Schaefer deposition methods in which a mono-layer of nanoparticles is transferred onto a substrate.
  • the existing methods have certain disadvantages.
  • nanoparticle assembly at the liquid surface relies on solvent evaporation, while a substrate is placed under the liquid surface. Following evaporation, the substrate is gently lifted up to collect the nanoparticle film; however, this method produces discontinuities and cracks in the film during the transfer process.
  • the invention provides a novel technique for rapid large-scale assembly of monolayers and multilayers of nanoelement assemblies on different substrates.
  • the technique is facile, based on self-assembly, and utilizes nanoparticles or other nanoelements suspended in a nonpolar solvent that is poured slowly on top of a polar solvent to form a layered two-phase liquid system including an interface between the phases. Due to their immiscibility, the nanoelements form a monolayer and/or multilayers at the solvent interface.
  • the method of the present invention enables assembly of nanoparticles and other types of nanoelements into extended monolayers with length scales from about one micron to several millimeters with few or no defects.
  • the method makes possible the high-rate fabrication of large-scale nanoelement coatings.
  • the assembly process of the invention allows the assembly process to be increased by two orders of magnitude over previous techniques, and enables nanoelement coatings to be deposited on flat surfaces as well as patterned surfaces.
  • One aspect of the invention is a method of assembling nanoelements at a polar/nonpolar solvent interface.
  • the method includes the steps of: (a) providing a polar solvent and a suspension of nanoelements in a nonpolar solvent, and (b) moving a substrate through the interface while the substrate is maintained at an angle ⁇ to the interface.
  • the polar and nonpolar solvents form a two-phase system having an interface between the nonpolar and polar solvents.
  • the two-phase system contains a layer of nanoelements disposed at the interface.
  • the angle of withdrawing the substrate is such that 10° ⁇ ⁇ ⁇ 60°.
  • As the substrate is moved through the interface a layer or film containing the nanoelements is assembled on the substrate.
  • ⁇ is about 30°.
  • the step of moving is performed at a rate of 0.5 to 3 mm/min of linear motion through the interface; in a preferred embodiment, the rate is about 3 mm/min.
  • the nonpolar solvent is disposed above the polar solvent in the two-phase system; in other embodiments, polar solvent is disposed above the nonpolar solvent in the two-phase system.
  • the polar solvent is selected from the group consisting of water, aqueous solutions, methanol, ethanol, and mixtures thereof.
  • the nonpolar solvent is selected from the group consisting of hexane, toluene, chloroform, and mixtures thereof.
  • the nanoelements are selected from the group consisting of nanoparticles, nanotubes, nanocrystals, quantum dots, macromolecules, and mixtures thereof.
  • Another aspect of the invention is a nanoelement assembly produced by the method described above.
  • Still another aspect of the invention is a device for assembling monolayer or multilayer films of nanoelements on a substrate.
  • the device includes: a solvent- resistant container for liquids; a polar solvent and a nonpolar solvent within the container, forming a two-phase solvent system, and having an interface between the solvents; a substrate at least partially disposed within the container and arranged at an angle ⁇ to the interface, wherein 10° ⁇ ⁇ ⁇ 60°; and a substrate lifting mechanism capable of withdrawing the substrate disposed within from the container while at said angle.
  • a method of assembling nanoelements at a polar/nonpolar solvent interface comprising the steps of:
  • nonpolar solvent is selected from the group consisting of hexane, toluene, chloroform, and mixtures thereof.
  • nanoelements are selected from the group consisting of nanoparticles, nanotubes, nanocrystals, quantum dots, macromolecules, and mixtures thereof.
  • the substrate comprises a pattern of voids, and the nanoelements are selectively assembled in the voids.
  • the substrate is selected from the group consisting of silicon, silicon dioxide, metal oxides, and organic polymers. 18. The method of any of the preceding items, wherein the substrate is rigid and comprises a substantially planar surface upon which the nanoelements are assembled.
  • the substrate is flexible and comprises a substantially flat or curved planar surface upon which the nanoelements are assembled.
  • step of moving comprises cyclic dipping of the substrate to deposit two or more layers of
  • the nanoelement assembly of item 27 comprising a multilayer of said nanoelements on the substrate.
  • nanoelement assembly of any of items 27-30 wherein the substrate comprises a pattern of voids, and the nanoelements are selectively assembled in the voids.
  • the substrate comprises a smooth portion, and a continuous layer of nanoelements is assembled to cover the smooth portion.
  • a device for assembling monolayer or multilayer films of nanoelements on a substrate comprising:
  • a polar solvent and a nonpolar solvent within the container forming a two- phase solvent system, and having an interface between the solvents;
  • a substrate at least partially disposed within the container and arranged at an angle ⁇ to the interface, wherein 10° ⁇ ⁇ ⁇ 60°;
  • a substrate lifting mechanism capable of withdrawing the substrate disposed within from the container while at said angle.
  • the device of item 40 or 41 further comprising a plurality of nanoelements disposed at said interface.
  • the device of item 42 further comprising a plurality of said nanoelements disposed on a surface of the substrate BRIEF DESCRIPTION OF THE DRAWINGS
  • Figures 1A-1 C show prior art nanoelement assembly techniques (Fig. lA, Langmuir-Blodgett method; Fig. 1 B, Langmuir Schaefer method) compared with a method according to the present invention (Fig. 1 C).
  • Figure 2A shows a photograph of an experimental apparatus containing water overlayered with a dispersion of gold nanoparticles in hexane.
  • Figure 2B shows the apparatus of Fig. 2A containing a submerged substrate being withdrawn at an angle through the water-hexane interface. As the substrate is withdrawn, a layer of the nanoparticles is deposited on the surface of the substrate.
  • Fig. 2C shows a schematic illustration of the indicated area of Fig. 2B during assembly.
  • Figure 3A shows an SEM image of assembled 5 nm diameter silver nanoparticles
  • Figure 3B shows an SEM image of assembled 5 nm diameter gold nanoparticles.
  • Figures 4A and 4B show the results of assembly using a pulling speed of 0.5 millimeters per minute.
  • Figures 4C and 4D show the results of assembly using a faster pulling speed of 3.0 mm/min.
  • Figures 4B and 4D are enlarged images of the assembled nanoparticles of Figs. 4A and 4C, respectively.
  • Figures 5A and 5B show the effect of nanoparticle concentration on the assembly process.
  • Figure 5A shows the assembled film obtained using a concentration of 1 wt% of 5 nm silver nanoparticles in hexane
  • Fig. 5B shows the assembled film obtained when the concentration was doubled to 2 wt%.
  • Figures 6A and 6B show nanoparticle monolayers assembled using nanoparticle suspensions in hexane (Fig. 6A) and toluene (Fig. 6B).
  • the present inventors have developed new methods for assembling nanoelements onto a substrate at high speed for use in nanomanufacturing.
  • the methods enable the assembly of nanoparticles and other nanoelements as extended monolayers and multilayers with length scales from one micron to several millimeters with few or no defects.
  • the nanoelement assembly process can be sped up by hundreds of times, which makes the coating process suitable for mass production.
  • Commercial applications include the production of nanoelectronics, optical devices, single electron transistors, and materials and devices for energy harvesting and energy storage.
  • nanoelement suspension With the present methods, only a small amount of a nanoelement suspension is required for continuous and large-scale film fabrication.
  • the assembly process parameters such as pulling speed and angle can be controlled by a dipcoater or similar apparatus. Both flat and patterned surfaces made from a variety of substrate materials can be coated with nanoelements of various sizes, including small nanoparticles of 4 nm size or less. Functionalization of the nanoelements is not required for their assembly.
  • FIGs 1A and 1 B illustrate two such methods.
  • the Langmuir- Blodgett method shown in Fig. 1A involves forming a monolayer of nanopartilces at an air-water interface, and pulling the mononlayer (or two monolayers) up using a vertically oriented movable substrate is lifted vertically through the monolayer while movable barriers maintain lateral pressure in the monolayer.
  • Figure 1 B shows the related Langmuir-Schaefer technique, in which a horizontally oriented movable substrate is lifted vertically through the surface monolayer, which it captures on the substrate.
  • the method of the present invention utilizes the withdrawal of the monolayer, which is positioned at a polar/nonpolar solvent interface, at a gentle angle onto the surface of a substrate drawn up through the interface while maintaining the angle.
  • the present invention utilizes continuous pulling of a monolayer or multilayer of nanoelements at a gentle angle, avoiding abrupt angles, and relying on the cohesiveness of the nanoelements and the physics of the polar/nonpolar solvent interface to provide continuous assembly of the nanoelements into a continuous layer on the substrate.
  • nanoelements for use in the invention can be nanoparticles, nanotubes, nanocrystals, quantum dots, or macromolecules.
  • nanoparticles refers to small, compact solid materials having a diameter, or a largest dimension across, in the range from about 1 nm to about 999 nm, preferably from about 1 nm to about 100 nm.
  • the nanoparticles can be 4 nm or less, 5 nm or less, 6 nm or less, 7 nm or less, 8 nm or less, 10 nm or less, 15 nm or less, 20 nm or less, 50 nm or less, or 100 nm or less.
  • the term "nanoparticles" does not include extended structures such as nanotubes, needles, or fibers.
  • the nanoparticles are essentially spherical, meaning that for a given particle all dimensions across the particle are within +/-10%, +/-20%, +/-30%, or +/-50% of the mean dimension across the particle.
  • the nanoelement material can be crystalline or polycrystalline.
  • the nanoelement material can be metallic, such as nanoparticles or other nanoelements comprising or consisting of gold, silver, platinum, cobalt, or other noble or non-noble metals, or mixtures thereof.
  • the nanoelement material also can comprise or consist of a polymer material such as polystyrene, or an oxide material such as silica.
  • the nanoelements can be any type of carbon nanotubes, such as single-walled carbon nanotubes, multi-walled carbon nanotubes, semiconducting carbon nanotubes, metallic carbon nanotubes, or a mixture thereof.
  • the substrate upon which the nanoelements are assembled can be any solid material capable of binding and supporting the nanoelements, and resistant to degradation in the two-phase solvent system.
  • the substrate is preferably nonconductive.
  • nonconductive substrates include silicon, silicon dioxide, and organic polymer materials.
  • the substrate can be, for example, a flexible polyimide, polyether ether ketone (PEEK), polyester (e.g., polyethylene terephthalate (PET)) film.
  • PEEK polyether ether ketone
  • PET polyethylene terephthalate
  • the substrate preferably has at least one essentially planar surface that receives the nanoelements.
  • the nanoelement receiving surface can be smooth or patterned.
  • a smooth substrate surface can be used to prepare a planar and continuous film of nanoelements, whereas a patterned surface, such as one containing a pattern of nanoscale trenches or other structures, can be used to form electrically conductive pathways as part of a circuit, such as a nanocircuit, or other electrical components of a circuit, processor, memory, or energy storage device.
  • the dimensions and form of the substrate can be selected according to its intended use, and it can be adapted for attachment to a dipcoater or other device used to assemble nanoelements on the substrate surface.
  • the substrate surface that is intended to receive the nanoelements can optionally be functionalized, for example, to improve adhesion of the nanoelements to the surface.
  • the substrate can be coated with a material to render it more or less hydrophobic, hydrophilic, or charged, or it can be treated to increase the density of charged groups on the surface for nanoelement assembly. It also can be functionalized or patterned by lithography so as to establish a desired pattern for the localization of nanoelements during assembly.
  • a two-phase solvent system is used to concentrate the nanoelements at the interface between the solvents, forming a monolayer or multilayered film of the nanoelements between the two solvent phases, which can then be collected on the substrate.
  • a large number of two-phase solvent systems can be used in the invention.
  • Such two-phase systems are generally formed by layering a less dense solvent over a denser solvent with which it is immiscible by virtue of their different polarity, or other properties that render them immiscible.
  • a hydrophilic solvent can be overlayered with a less dense hydrophobic solvent. More complex mixtures of three or more solvents are also possible, provided that they form two stable phases, one floating over the other.
  • the solvents can be mixed or partially mixed, whereupon they spontaneously form a two-phase system under the influence of gravity, with the denser phase below the less dense phase, and with the two phases separated by a visible interface.
  • Each phase contains predominantly one solvent, but an equilibrium mixture forms, in which each phase may contain some amount of the other solvent as well.
  • a nonpolar solvent is selected which allows the nanoelements to be well dispersed in it, i.e., without precipitation, flotation, or aggregation of the nanoelements, but with the nanoelements stably suspended and preferably monodisperse (i.e., distributed within the solvent as free monomers).
  • a polar solvent is selected which forms a two-phase solvent system with the nonpolar solvent.
  • the polar solvent is water or an aqueous solution
  • the nonpolar solvent is an organic solvent. From such a combination, a two-phase system is formed having a predominantly aqueous phase below and a predominantly organic solvent phase above.
  • the organic solvent is denser than water, the positions of the phases is reversed (organic solvent below, water above).
  • the nonpolar solvent is less dense than the polar solvent and also somewhat volatile, so that residual nonpolar solvent remaining on the withdrawn substrate can readily evaporate.
  • Preferred polar solvents include water; aqueous solutions containing electrolytes, buffers, or other solutes; short chain alcohols such as methanol, ethanol, propanol, isopropanol; short chain ketones such as acetone; dimethylsulfoxide (DMSO); and mixtures thereof.
  • Preferred nonpolar solvents include hexane, or other C4-C20 alkanes (with a preference for the more volatile short-chain alkanes of C4-C10), either straight chain, branched, or cyclic, or their alcohols, ketones, acids, amines, alkenes, or alkynes; toluene and other aromatic hydrocarbons; chloroform and other halogenated hydrocarbons; and mixtures thereof.
  • the nanoelements are typically dispersed in the nonpolar solvent because they can be more readily dispersed in a nonpolar solvent than in a polar one, such as water.
  • a polar one such as water.
  • the method could be practiced differently, i.e., starting with the nanoelements dispersed in the polar solvent instead of the nonpolar solvent, or even in both the polar and nonpolar solvents, provided that the nanoelements concentrate at the interface between the polar and nonpolar solvents.
  • Mixtures of nonpolar solvents can be employed to improve nanoelement dispersibility, or to improve performance of a given two-phase solvent system.
  • Mixtures of polar solvents can be used for the same purpose, or electrolytes or pH buffers can be added to a polar solvent which is or which contains water.
  • the concentration of nanoelements dispersed in the nonpolar solvent is an important factor in providing a suitably dense array of nanoparticles at the solvent interface, which ultimately can determine whether a complete monolayer or multilayers are assembled on the substrate. Too low a concentration of nanoelements will result in formation of a monolayer with gaps on the substrate. Too high a concentration of nanoelements can result in regions of bilayer or multilayer structures formed on the substrate.
  • a suitable concentration is in the range from about 0.1 to about 10 wt%, or about 0.5 to about 5 wt%, preferably from about 1 to about 2 wt%. Adjustment of the concentration may be necessary to achieve a desired structure, such as a complete monolayer, and may depend on the solvent system and type of nanoelements used.
  • the substrate is maintained at a constant angle with respect to the solvent interface during its withdrawal through the solvent interface.
  • the angle, ⁇ is selected such that 10° ⁇ ⁇ ⁇ 60°, or 15° ⁇ ⁇ ⁇ 55°, or 30° ⁇ ⁇ ⁇ 60°, or 20° ⁇ ⁇ ⁇ 50°, or 20° ⁇ ⁇ ⁇ 40°, or 25° ⁇ ⁇ ⁇ 35°.
  • ⁇ is a shallow angle of less than 45°, or less than 40°, or about 40°, about 35°, about 30°, about 25°, about 20°, or about 15°.
  • Steep angles > 60°, > 50°, > 45°, or > 40° are to be avoided, as they can lead to breaks or gaps in the deposited film of nanoelements.
  • Withdrawal of the substrate through the nanoelement film at the solvent interface is preferably automated and performed by a motorized device with adjustable angle.
  • the substrate can be withdrawn by a linear motion that maintains a constant angle with respect to the solvent interface.
  • the motion should be constant and smooth, without interruption of abrupt change in speed. The speed of withdrawal is another important factor in determining the quality of nanoelement assembly on the substrate.
  • the speed can be, for example, in the range from about 0.1 mm/min to 10 mm/min, or about 0.2 mm/min to about 8 mm/min, or about 0.3 mm/min to about 6 mm/min, or about 0.5 mm/min to about 5 mm/min, or about 0.5 mm/min to about 3 mm/min, or about 1 mm/min to about 10 mm/min, or about 1 mm/min to about 4 mm/min, or about 2 mm/min to about 4 mm/min, or about 3 mm/min to about 5 mm/min, or about 3 mm/min to about 4 mm/min.
  • the motion is about 3 mm/min, or about 4 mm/min.
  • the substrate is lifted upwards while maintaining a constant angle with respect to the interface, or a combination of upwards motion and linear retraction along the angle to the interface is used.
  • Figures 2A and 2B show an experimental apparatus for performing a method of the invention.
  • the apparatus contains water overlayered with a dispersion of gold nanoparticles in hexane.
  • a submerged substrate is being withdrawn at an angle through the water-hexane interface. As the substrate is withdrawn, a layer of the nanoparticles is deposited on the surface of the substrate in the region of the dashed rectangle.
  • FIG. 2C shows a schematic illustration of device 10 for carrying out a method of the present invention.
  • Container 80 holds the two-phase solvent system, including polar solvent 20 which is overlayered with nonpolar solvent 30 (containing a dispersion of nanoelements, not shown).
  • a region of air 40 is above the nonpolar solvent layer.
  • Interface 25 separates the two immiscible solvent phases and contains an array or layer of nanoelements 60 suspended between the phases.
  • Substrate 50 is withdrawn by linear motion in the direction of arrow 70 while maintaining angle ⁇ with respect to the interface.
  • the substrate is mounted onto movable arm 80 of a motorized dipping device.
  • Silver and gold nanoparticles were deposited on a silicon substrate.
  • a two- phase system of hexane, containing 1 wt% of the nanoparticles in homogeneous dispersion, layered over deionized water was established.
  • a flat (unpatterned) silicon substrate attached to a dip coating apparatus was submerged into the solvent system, and the substrate was withdrawn from the solvent system in a computer-programmed, controlled manner. Withdrawal speed was 3 mm/min and the dip coater was set at 30° with respect to the horizontal solvent interface.
  • the resulting nanoparticle films were viewed using scanning electron microscopy (SEM) and are shown in Fig. 3A (5 nm silver nanoparticles) and Fig. 3B (5 nm gold nanoparticles).
  • SEM scanning electron microscopy
  • nanoparticle concentration was investigated. At a lower concentration (1 wt%) of 5 nm silver nanoparticles dispersed in hexane, over a base of water, a monolayer of nanoparticles was assembled on the silicon substrate (Fig. 5B). However, there were void areas of 20- 30 nm size visible across the total covered area of the substrate. Doubling the concentration (to 2 wt%) resulted in very good coverage having essentially no voids (Fig. 5B). However, a few bilayer regions were observed interspersed within the nanoparticle monolayer.
  • Fig. 6A shows a monolayer of 5 nm silver nanoparticles formed from a hexane dispersion
  • Fig. 6B shows a similar monolayer obtained from a toluene dispersion.

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Abstract

L'invention concerne une technique pour l'assemblage à grande échelle et rapide de monocouches et de multicouches de nanoéléments sur une grande variété de substrats différents. La technique est basée sur l'auto-assemblage de nanoéléments en suspension à l'interface entre un solvant polaire et un solvant non polaire. La couche de nanoéléments est recueillie sur un substrat à un angle peu profond, formant une monocouche ou une multicouche continue de nanoparticules qui peuvent être éventuellement modelées ou peuvent être transférées sur d'autres substrats pour former des composants de nanoélectronique, de dispositifs optiques et de capteurs.
PCT/US2015/064459 2014-12-08 2015-12-08 Assemblage de nanoéléments au niveau d'une interface solvant polaire-non polaire WO2016094384A2 (fr)

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Cited By (7)

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WO2017219125A1 (fr) * 2016-06-10 2017-12-28 Pope Michael A Procédé et appareil pour la production de films monocouches à grande surface de nanomatériaux dispersés en solution
FR3056122A1 (fr) * 2016-09-16 2018-03-23 Commissariat A L'energie Atomique Et Aux Energies Alternatives Procede de fixation d'un film de particules sur une piece en materiau polymere, par exposition a des vapeurs de solvant
CN110240117A (zh) * 2018-03-08 2019-09-17 中国科学院宁波材料技术与工程研究所 超薄透明纳米/微米结构自组装薄膜及其绿色制备方法
WO2020025146A1 (fr) * 2018-08-03 2020-02-06 Toyota Motor Europe Procédé de dépôt à base de solution permettant la préparation de films minces semi-conducteurs par auto-assemblage de particules dispersées au niveau d'une interface liquide/liquide
CN110893461A (zh) * 2019-11-06 2020-03-20 肇庆市华师大光电产业研究院 一种具有三级复合结构的纳米颗粒制备方法
CN111560123A (zh) * 2020-05-14 2020-08-21 南方科技大学 一种单层胶体球薄膜及其制备方法
WO2020233809A1 (fr) 2019-05-22 2020-11-26 Toyota Motor Europe Procédé de dépôt à base de solution permettant la préparation de films minces semi-conducteurs par auto-assemblage de particules dispersées au niveau d'une interface liquide/liquide

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US7212284B2 (en) * 2004-05-12 2007-05-01 General Electric Company Method for forming nanoparticle films and application thereof
US8216636B2 (en) * 2006-07-28 2012-07-10 Nanyang Technological University Method of aligning nanotubes
US9145618B2 (en) * 2010-11-29 2015-09-29 Northeastern University High rate electric field driven nanoelement assembly on an insulated surface

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017219125A1 (fr) * 2016-06-10 2017-12-28 Pope Michael A Procédé et appareil pour la production de films monocouches à grande surface de nanomatériaux dispersés en solution
US10875052B2 (en) 2016-06-10 2020-12-29 Michael A. POPE Method and apparatus for producing large-area monolayer films of solution dispersed nanomaterials
FR3056122A1 (fr) * 2016-09-16 2018-03-23 Commissariat A L'energie Atomique Et Aux Energies Alternatives Procede de fixation d'un film de particules sur une piece en materiau polymere, par exposition a des vapeurs de solvant
CN110240117A (zh) * 2018-03-08 2019-09-17 中国科学院宁波材料技术与工程研究所 超薄透明纳米/微米结构自组装薄膜及其绿色制备方法
WO2020025146A1 (fr) * 2018-08-03 2020-02-06 Toyota Motor Europe Procédé de dépôt à base de solution permettant la préparation de films minces semi-conducteurs par auto-assemblage de particules dispersées au niveau d'une interface liquide/liquide
US11551928B2 (en) 2018-08-03 2023-01-10 Toyota Motor Europe Solution-based deposition method for preparing semiconducting thin films via dispersed particle self-assembly at a liquid-liquid interface
WO2020233809A1 (fr) 2019-05-22 2020-11-26 Toyota Motor Europe Procédé de dépôt à base de solution permettant la préparation de films minces semi-conducteurs par auto-assemblage de particules dispersées au niveau d'une interface liquide/liquide
CN110893461A (zh) * 2019-11-06 2020-03-20 肇庆市华师大光电产业研究院 一种具有三级复合结构的纳米颗粒制备方法
CN110893461B (zh) * 2019-11-06 2021-08-24 肇庆市华师大光电产业研究院 一种具有三级复合结构的纳米颗粒制备方法
CN111560123A (zh) * 2020-05-14 2020-08-21 南方科技大学 一种单层胶体球薄膜及其制备方法

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