WO2011107681A1 - Procede de depot d'une couche de particules organisees sur un substrat - Google Patents
Procede de depot d'une couche de particules organisees sur un substrat Download PDFInfo
- Publication number
- WO2011107681A1 WO2011107681A1 PCT/FR2011/050166 FR2011050166W WO2011107681A1 WO 2011107681 A1 WO2011107681 A1 WO 2011107681A1 FR 2011050166 W FR2011050166 W FR 2011050166W WO 2011107681 A1 WO2011107681 A1 WO 2011107681A1
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- WIPO (PCT)
- Prior art keywords
- particles
- substrate
- bath
- solvent
- process according
- Prior art date
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Classifications
-
- 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
-
- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
Definitions
- the invention relates to a method of depositing a layer of organized particles on a substrate. This method is particularly well suited for large areas, of the order of tens of square centimeters, and for particles having a large size of several hundred nanometers.
- Such substrates covered with a layer of organized particles may in particular find application in the field of surface treatment such as "soft" lithography, anti-reflective layers or surface structuring.
- the two main techniques of the prior art allowing the deposition of monolayers of organized particles are the Langmuir-Blodgett method and the dip coating (dip coating), respectively.
- the Langmuir-Blodgett method involves transferring a floating monolayer to a solid substrate after soaking. It thus consists in dispersing the particles in a solvent which is placed on water. While the solvent is partially evaporated, the film of particles floating on the surface of the water is compressed by a movable barrier. This process makes it possible to organize the particles by forcing them or confining them in a minimum space. They thus adopt a compact hexagonal type structure, leaving little free space on the surface.
- the substrate is then dipped vertically into the solution before being removed.
- the floating monolayer is thus transferred to the surface of the substrate by capillarity.
- the substrate can be covered with several monolayers by successive dipping.
- the "dip coating” technology represents another method commonly used in the field of the deposition of particles organized on the surface of a substrate.
- This technique is similar to soaking and removing the substrate in a suspension or colloid of particles, thus ensuring the transfer of particles to the surface of the substrate.
- the two main factors to control in this technique are the particle concentration and the rate of shrinkage.
- the control of the concentration of particles makes it possible to obtain compact layers, whereas the determination of the good rate of shrinkage allows the evaporation of the solvent at the level of the meniscus of the solution.
- the capillary forces thus allow the self-organization of the particles.
- it is important to minimize the immersion time of the substrate in order to avoid the sedimentation of the particles during the deposition of micron particles. Indeed, the forces of gravity cause the sedimentation of particles and can not be neglected.
- the "dip coating” method is faster to implement and better adapted to supports of larger dimensions, of the order of several centimeters (Y. Wang, et al. processed large area surface textures based on dip coating ", IEEE, 2008, 978-1-4244-2104-6 / 08).
- the present invention provides a deposition process devoid of this pitfall.
- this method makes it possible to deposit micron-sized particles or several hundred nanometers, on substrates whose surface can be up to several tens of square centimeters.
- it is a simple and quick process to implement for the deposition of organized particles.
- the technical solution proposed in the context of the present invention consists in homogenizing the bath of particles, using a magnetic stirrer or with a circulation of fluid using a pump, creating a flow in the middle with a slight movement on the surface of the liquid.
- the Applicant has thus developed a method making it possible to obtain homogeneous deposits of micron particles or of a few hundred nanometers over large areas by homogenizing the bath, in which the particles are in suspension.
- the process according to the invention aims at a method of depositing particles in the form of a monolayer organized on a substrate. It is characterized in that it comprises the following steps:
- said bath comprises a solvent mixture consisting of at least 50%, even 60%, 70%, or even more advantageously 80% by volume of a first solvent.
- said first solvent is, preferably, ethanol.
- the volume of the first solvent may represent up to 90% of the volume of the bath.
- the deposition of particles consists in covering the surface of a support, and in this case a substrate, by a monolayer of said particles in an organized manner.
- the particles thus cover the substrate in a compact and homogeneous manner.
- substrate is more particularly meant glass, silicon or DLC (Diamond Like Carbon) deposited on a material.
- the method according to the invention makes it possible to deposit a monolayer of particles on large substrates.
- the surface of said substrate is between 5 cm 2 and 1 m 2 . Typically, it is between 5 and 400 cm 2 , more particularly between 25 and 200 cm 2 .
- the deposition process according to the invention is particularly well suited for particles whose size is greater than 100 nm.
- the particle size is between 500 nm and 2.6 ⁇ . In a particular embodiment, the particle size is greater than 2.6 ⁇ . According to another particular embodiment, it is between 500 nm and 1000 nm.
- the particles have a spherical shape, their size then being comparable to their diameter. Furthermore and in the context of the process according to the invention, the size of the particles is advantageously monodispersed, the average particle size not varying by more than 5%. In general, the particles are spherical and monodisperse, they thus make it possible to obtain a layer, or deposit, organized.
- the particles deposited by means of the process of the invention are silica balls or spheres, the diameter of which, as indicated above, is greater than 100 nm and more advantageously between 500 nm and 2.6 ⁇ .
- a ball diameter equal to 2.6 ⁇ is in no way a limit to the present invention.
- the balls may thus have a diameter greater than 2.6 ⁇ . In a particular embodiment, it is between 500 nm and 1000 nm.
- a solution comprising at least one solvent and said particles is firstly prepared.
- the solution or bath thus obtained is then stirred to ensure homogeneity.
- the controlled stirring of the bath makes it possible to avoid the sedimentation of the large particles.
- the bath is agitated when the density of the particles is greater than the density of the solvent mixture, and the particles are large enough to undergo the effects of gravity, they are then likely to decant.
- these conditions correspond to a density equal to 0.9 g / cm 3 and particles having a diameter equal to 100 nm.
- the substrate is then immersed in the bath. Then, it is removed with a withdrawal speed which is determined in particular according to the concentration of the particles.
- the rate of shrinkage may vary depending on the nature of the substrate and the size of the particles.
- stirring is maintained throughout the process (bath preparation / soaking / removal) and more particularly during the soaking and removal steps.
- the substrate thus obtained is covered with a monolayer of particles.
- monolayers of controlled thickness and nature can be deposited on the surface of the substrate by repeating the process according to the invention.
- the first step of the process therefore consists in preparing the bath useful for the deposit.
- solvent a liquid for dispersing the particles.
- the solution, or the bath comprises the solvent or solvents, the particles and optionally at least one surfactant.
- the stirring makes it possible to homogenize the bath and thus to obtain particle deposits in particular of larger size which are more compact, more homogeneous and reproducible, even on large surfaces.
- the agitation of said bath is provided by a fluid flow, preferably the solution as defined above, using a pump.
- the flow rate of the pump is adjusted according to the volume of said solution.
- it is advantageously between 100 and 500 l / h.
- it is between 200 and 400 l / h and even more advantageously between 250 and 300 l / h.
- the beads do not remain on the surface of the solution but they are sucked up and rejected by the pump.
- the pump creates a flow in the medium, in this case the mixture of at least the solvent and at least the particles, with a slight movement on the surface of the liquid.
- the agitation of said bath can be provided by means of a magnetic stirrer.
- the speed of rotation of the corresponding magnetic bar is adjusted according to the volume of said bath. It is typically between 100 and 5000 rev / min, more preferably between 200 and 600 rev / min.
- the particles to be deposited using the process according to the invention are dispersed in a solvent mixture advantageously comprising at least 50%, even 60%, 70%, or even more advantageously 80% by volume of ethanol.
- the deposition process according to the invention is carried out using a second solvent selected from water and butanol.
- the second solvent is preferably water.
- the particles are therefore dispersed in a water / ethanol mixture.
- Water regulates the evaporation of the solvent mixture to avoid problems of reproducibility in case of too rapid evaporation.
- the volume ratio between the two solvents is preferably 4/1 in order to attenuate the formation of holes at the top and overlaps at the bottom, with respect to the monolayer in the case of evaporation that is too slow.
- the angle of contact with water reflects the ability of the water to spread over the surface of the substrate by wettability. It is accepted by those skilled in the art that the angle of contact with water is defined by the angle between the surface of the substrate and the tangent to the drop of water at the point of contact with the surface of the substrate on which the drop of water was deposited.
- the second solvent is preferably water to ensure the deposition of large particles on a glass substrate.
- butanol is advantageously chosen as the second solvent for a substrate type DLC.
- the solvent mixture is preferably composed of ethanol / butanol with a 4/1 volume ratio.
- butanol makes it possible to wet the DLC type substrate for which the angle of contact with the water is approximately 70 °.
- Ethanol promotes the organization of particles but also a fairly rapid evaporation and thus avoids the formation of holes at the top and overlays at the bottom, compared to the monolayer in case of evaporation too slow.
- the deposition method according to the invention is thus provided with a mixture of two solvents, the volume ratio between the first solvent, preferably being ethanol, and the second solvent being advantageously equal to 4/1. .
- the use of a mixture of more than two solvents, advantageously with ethanol as the majority solvent (at least 50% by volume) is also conceivable in the context of the present invention.
- the concentration of the particles in the bath is between 50 g / l and 500 g / l, more advantageously between 80 and 200 g / l.
- the bath may also contain a surfactant, to improve the homogeneity of the deposit.
- a surfactant such as Triton ® X-100 may be necessary to wet the substrate well.
- the second step is therefore to perform the soaking of the substrate to be coated in the stirred bath.
- the soaking time of the substrate in the bath is between 0.5 seconds and 15 minutes.
- the third step is to remove the substrate from the stirred bath.
- the rate of shrinkage of the substrate is between 2 cm / min and 50 cm / min, more preferably between 5 and 30 cm / min.
- the particles stick to the substrate by capillarity.
- the rate of shrinkage is notably related to the concentration of the particles in the bath but also to the size of said particles. A high concentration of the particles leads to a slower withdrawal rate.
- the present invention makes it possible to improve the deposition of large particles on large size substrates by homogenizing the bath in which the particles are in suspension.
- the present invention makes it possible to deposit a monolayer of large sized organized particles on substrates whose surface may be of the order of tens of square centimeters.
- This method also makes it possible to overcome the phenomenon of sedimentation of particles observed in the so-called "dip coating” method.
- the arrangement of the particles is compact and orderly.
- the present invention makes it possible to deposit monolayers of large particles on the surface of various substrates of large size. Agitation of the solution further comprising the solvents with the majority ethanol and the particles makes it possible to deposit in a very organized manner.
- FIG. 2 shows a glass substrate with a surface area of 5 ⁇ 5 cm 2 , covered with a monolayer of SiO 2 beads of 1 ⁇ in diameter using the method according to the invention on a photographic plate (A ) or MEB (B).
- FIG. 3 shows a DLC-type substrate with a surface of a few square centimeters covered with a monolayer of SiO 2 beads of 500 nm diameter on an SEM plate.
- FIG. 4 shows a glass substrate coated with a monolayer of silica beads of 2.6 .mu.m in diameter using the method according to the invention on a photographic plate (A) or SEM (B).
- EXAMPLE 1 This example is illustrated in FIG. 1.
- a suspension of silica beads containing 108 g / l of particles is prepared by mixing 65 g of SiO 2 beads of 500 nm in diameter and 100 drops of Triton X- 100®. in 480 ml of ethanol and 120 ml of water. The agitation of the mixture is carried out with a circulation of fluid using a pump (270 1 / h). A glass substrate with an area of 10 x 10 cm 2 is immersed in the mixture.
- Silica bead suspension a 150 g / 1 particles was prepared by mixing 30 g of beads of Si0 2 of 1 ⁇ diameter and 40 drops of Triton X-100 ® in 160 ml of ethanol and 40 ml of water . Stirring of the mixture is provided by a magnetic stirrer (430 rpm). A glass substrate with a surface area of 5 x 5 cm 2 is immersed in the mixture.
- the substrate is removed from the mixture at a speed of 21 cm / min.
- a suspension of silica beads containing 150 g / l of particles is prepared by adding 7.5 g of SiO 2 beads with a diameter of 500 nm in a mixture composed of 40 ml of ethanol and 10 ml of butanol. Stirring of the mixture is provided by a magnetic stirrer (360 rpm). A DLC type substrate of a few square centimeters is immersed in the mixture.
- the DLC-type substrate is removed from the mixture at a rate of 7 cm / min.
- a suspension of silica beads containing 300 g / l of particles is prepared by adding 72 g of SiCte beads with a diameter of 2.6 ⁇ in a mixture composed of 200 ml of ethanol and 40 ml of water. Stirring of the mixture is provided by a magnetic stirrer (400 rpm). A glass substrate with an area of 20 cm 2 is immersed in the mixture.
- the glass-like substrate is removed from the mixture at a rate of 28 cm / min.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Silicon Compounds (AREA)
- Carbon And Carbon Compounds (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11705940A EP2542353A1 (fr) | 2010-03-02 | 2011-01-28 | Procede de depot d'une couche de particules organisees sur un substrat |
CN201180010696.0A CN102770218B (zh) | 2010-03-02 | 2011-01-28 | 将组织化粒子层沉积于基片上的方法 |
KR1020127022542A KR20130054939A (ko) | 2010-03-02 | 2011-01-28 | 기판 상에 정렬된 입자층의 증착 방법 |
US13/578,707 US20120321810A1 (en) | 2010-03-02 | 2011-01-28 | Method for depositing a layer of organized particles on a substrate |
JP2012555466A JP2013521111A (ja) | 2010-03-02 | 2011-01-28 | 組織化された粒子の層を基材上に付着させる方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1051496 | 2010-03-02 | ||
FR1051496A FR2956991B1 (fr) | 2010-03-02 | 2010-03-02 | Procede de depot d'une couche de particules organisees sur un substrat |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011107681A1 true WO2011107681A1 (fr) | 2011-09-09 |
Family
ID=42829944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2011/050166 WO2011107681A1 (fr) | 2010-03-02 | 2011-01-28 | Procede de depot d'une couche de particules organisees sur un substrat |
Country Status (7)
Country | Link |
---|---|
US (1) | US20120321810A1 (fr) |
EP (1) | EP2542353A1 (fr) |
JP (1) | JP2013521111A (fr) |
KR (1) | KR20130054939A (fr) |
CN (1) | CN102770218B (fr) |
FR (1) | FR2956991B1 (fr) |
WO (1) | WO2011107681A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2986720B1 (fr) * | 2012-02-10 | 2014-03-28 | Commissariat Energie Atomique | Procede de depot de particules sur un substrat, comprenant une etape de structuration d'un film de particules sur un convoyeur liquide |
WO2015017927A1 (fr) * | 2013-08-05 | 2015-02-12 | Valorbec S.E.C. | Procédé pour appliquer des particules sur des surfaces |
KR102074699B1 (ko) * | 2013-09-23 | 2020-03-02 | 한국전자통신연구원 | 광 기능성 기판의 형성방법 및 이를 포함하는 유기발광 다이오드 |
WO2015116267A1 (fr) * | 2013-10-31 | 2015-08-06 | University Of Florida Research Foundation, Inc. | Substrats comportant une couche antireflet et procédés de formation d'une couche antireflet |
KR101462357B1 (ko) * | 2013-11-29 | 2014-11-19 | 한양대학교 산학협력단 | 나노스피어 어레이 제조 장치 및 이를 이용한 나노스피어 어레이 제조 방법 |
WO2018035091A1 (fr) | 2016-08-15 | 2018-02-22 | University Of Florida Research Foundation, Inc. | Procédés et compositions se rapportant à des revêtements nanoporeux accordables |
US11467094B2 (en) | 2017-05-17 | 2022-10-11 | University Of Florida Research Foundation, Inc. | Methods and sensors for detection |
US11480527B2 (en) | 2017-12-20 | 2022-10-25 | University Of Florida Research Foundation, Inc. | Methods and sensors for detection |
WO2019126171A1 (fr) | 2017-12-21 | 2019-06-27 | University Of Florida Research Foundation | Substrats possédant une couche antireflet à large bande et procédés de formation d'une couche antireflet à large bande |
WO2019246370A1 (fr) | 2018-06-20 | 2019-12-26 | University Of Florida Research Foundation | Matériau de détection de pression intraoculaire, dispositifs et leurs utilisations |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0640406A1 (fr) * | 1993-08-31 | 1995-03-01 | Research Development Corporation Of Japan | Procédé pour fabriquer des films de particules |
US20030180472A1 (en) * | 2002-03-25 | 2003-09-25 | Otto Zhou | Method for assembling nano objects |
US20040079282A1 (en) * | 2000-08-04 | 2004-04-29 | Tomoegawa Paper Co., Ltd. | Production apparatus for a monolayer powder film on a base material in a shape of an elongated film |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0724400A (ja) * | 1993-07-08 | 1995-01-27 | Toray Ind Inc | 被膜の製造方法 |
JP3446505B2 (ja) * | 1996-10-23 | 2003-09-16 | 信越化学工業株式会社 | プライマー組成物 |
US7045195B2 (en) * | 2000-10-16 | 2006-05-16 | Governing Council Of The University Of Toronto | Composite materials having substrates with self-assembled colloidal crystalline patterns thereon |
JP2002286962A (ja) * | 2001-03-26 | 2002-10-03 | Mitsubishi Chemicals Corp | 微粒子薄膜の製造方法 |
JP2004117455A (ja) * | 2002-09-24 | 2004-04-15 | Ricoh Co Ltd | 微粒子人工結晶の製造装置および製造方法 |
JP4679832B2 (ja) * | 2004-04-08 | 2011-05-11 | 独立行政法人科学技術振興機構 | 微粒子集積体の製造方法及び微粒子細線アレイ |
JP4778714B2 (ja) * | 2005-02-22 | 2011-09-21 | 株式会社Snt | コーティング溶液およびその使用 |
JP5156256B2 (ja) * | 2007-04-17 | 2013-03-06 | 花王株式会社 | メソポーラスシリカ膜 |
JP5237658B2 (ja) * | 2008-03-18 | 2013-07-17 | ペンタックスリコーイメージング株式会社 | 基板上に規則的に二次元配置した構造体、及びその形成方法 |
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2010
- 2010-03-02 FR FR1051496A patent/FR2956991B1/fr not_active Expired - Fee Related
-
2011
- 2011-01-28 KR KR1020127022542A patent/KR20130054939A/ko not_active Application Discontinuation
- 2011-01-28 WO PCT/FR2011/050166 patent/WO2011107681A1/fr active Application Filing
- 2011-01-28 JP JP2012555466A patent/JP2013521111A/ja active Pending
- 2011-01-28 US US13/578,707 patent/US20120321810A1/en not_active Abandoned
- 2011-01-28 EP EP11705940A patent/EP2542353A1/fr not_active Withdrawn
- 2011-01-28 CN CN201180010696.0A patent/CN102770218B/zh not_active Expired - Fee Related
Patent Citations (3)
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EP0640406A1 (fr) * | 1993-08-31 | 1995-03-01 | Research Development Corporation Of Japan | Procédé pour fabriquer des films de particules |
US20040079282A1 (en) * | 2000-08-04 | 2004-04-29 | Tomoegawa Paper Co., Ltd. | Production apparatus for a monolayer powder film on a base material in a shape of an elongated film |
US20030180472A1 (en) * | 2002-03-25 | 2003-09-25 | Otto Zhou | Method for assembling nano objects |
Non-Patent Citations (4)
Title |
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"2008 8TH IEEE CONFERENCE ON NANOTECHNOLOGY (NANO) 18-21 AUG. 2008 ARLINGTON, TX, USA", 2008, IEEE, Piscataway, NJ, USA, ISBN: 978-1-4244-2103-9, article YUEHUI WANG ET AL: "Solution processed large area surface textures based on dip coating", pages: 771 - 774, XP002604757 * |
B. R. JACKSON ET AL.: "Self- assembly of monolayer-thick alumina particle-epoxy composite films", LANGMUIR, vol. 23, no. 23, 2007, pages 11399 - 11403 |
S. PARVIN ET AL.: "Side-chain effect on Langmuir and Langmuir-Blodgett film porperties of poly(N-alkylmethacrylamide)-coated magnetic nanoparticle", J. OF COLLOID AND INTERFACE SCIENCE, vol. 313, 2007, pages 128 - 134 |
Y. WANG ET AL.: "Solution processed large area surface textures based on dip coating", IEEE, vol. 978, no. 1, 2008, pages 4244 - 2104 |
Also Published As
Publication number | Publication date |
---|---|
KR20130054939A (ko) | 2013-05-27 |
FR2956991A1 (fr) | 2011-09-09 |
CN102770218A (zh) | 2012-11-07 |
FR2956991B1 (fr) | 2012-11-02 |
US20120321810A1 (en) | 2012-12-20 |
CN102770218B (zh) | 2014-06-25 |
EP2542353A1 (fr) | 2013-01-09 |
JP2013521111A (ja) | 2013-06-10 |
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