scholarly journals Self-Assembly of Fine Particles on Patterned Wettability in Dip Coating and Its Scale Extension with Contact Printing

2008 ◽  
Vol 2 (4) ◽  
pp. 783-791 ◽  
Author(s):  
Yoshihito KANAMORI ◽  
Arata KANEKO ◽  
Nobuyuki MORONUKI ◽  
Takafumi KUBO
Keyword(s):  
Self Assembly ◽  
Fine Particles ◽  
Dip Coating ◽  
Contact Printing

Fabrication of Patterned Ag and Au Inverse Opal Structures Through Repeated Self-Assembly of Fine Particles

2014 ◽  
Vol 8 (5) ◽  
pp. 755-760 ◽  
Author(s):  
Manabu Nishio ◽  
◽  
Nobuyuki Moronuki ◽  
Minoru Abasaki ◽  
◽  
...  
Keyword(s):  
Self Assembly ◽  
Fine Particles ◽  
Dip Coating ◽  
Silica Particles ◽  
The Self ◽  
Nano Particles ◽  
Inverse Opal ◽  
Patterned Substrate ◽  
Inverse Opal Structure ◽  
Gold Nano Particles

This study aims to apply the self-assembly process of particles to the fabrication of inverse opal structures, which improve the fabrication of catalysts and sensors. The process consists of two dip-coating steps. The first one is the production of sacrificial silica particles 1 or 2 µm in diameter. The second one is the fabrication of silver or gold nano-particles. After these processes, silica particles are dissolved to create the inverse opal structure. We demonstrate how changing the diameter of the sacrificial particle varies the size of the pores. Finally, we present how the patterned Ag and Au inverse opal structure can be created using the hydrophobic/hydrophilic patterned substrate.

Instability Phenomenon in Dip-Coating Process for Self-Assembly of Fine Particles and Design Countermeasures

2011 ◽  
Vol 5 (5) ◽  
pp. 688-693 ◽  
Author(s):  
Manabu Nishio ◽  
◽  
Nobuyuki Moronuki ◽  
Arata Kaneko
Keyword(s):  
Self Assembly ◽  
Fine Particles ◽  
Aqueous Suspension ◽  
Dip Coating ◽  
Selective Assembly ◽  
Pattern Design ◽  
Instability Phenomenon ◽  
Nano Structures ◽  
Improved Stability ◽  
Site Selective

The self-assembly of fine particles is a promising process for the production of nano-structures. In this process, aqueous suspension is often used. The spreading of the suspension on the substrate is a complex phenomenon that sometimes causes problems of instability. This paper discusses the instability phenomenon and proposes countermeasures from various aspects. It was found that special attention should be paid to the pattern design of site-selective assembly. Finally, complex structures made of particles of different sizes and materials are shown to demonstrate the improved stability after repeated dip-coating.

An extremely rapid dip-coating method for self-assembly of octadecylphosphonic acid and its thermal stability on an aluminum film

2014 ◽  
Vol 2 (46) ◽  
pp. 9941-9948 ◽  
Author(s):  
Donghan Chen ◽  
Horace King Yin Wu ◽  
Soheila Naderi-Gohar ◽  
Yiliang Wu ◽  
Yining Huang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Metal Oxides ◽  
Self Assembly ◽  
Dip Coating ◽  
Aluminum Film ◽  
Full Coverage ◽  
Coating Method ◽  
Dip Coating Method ◽  
Octadecylphosphonic Acid

Solution of octadecylphosphonic acid in anisole enables formation of a full-coverage monolayer on metal oxides in a matter of seconds.

Ordered mesoporous carbon in solid-phase microextraction for analysis of volatile organic compounds in water samples

2019 ◽  
Vol 11 (29) ◽  
pp. 3741-3749
Author(s):  
Bo Liu ◽  
Yaqiong Hao ◽  
Lixiao Wang ◽  
Mengyun Li ◽  
Hui Jiang
Keyword(s):  
Self Assembly ◽  
Mesoporous Carbon ◽  
Solid Phase ◽  
Dip Coating ◽  
Ordered Mesoporous Carbon ◽  
Ordered Mesoporous ◽  
Volatile Organic ◽  
Coating Method ◽  
Evaporation Induced Self Assembly ◽  
Dip Coating Method

An ordered mesoporous carbon (OMC) film supported on graphite fiber was prepared by a dip-coating method combined with a solvent evaporation induced self-assembly (EISA) strategy.

Synthesis of Locally-Ordered Carbon Nanotube Arrays from Patterned Catalyst by Self-Assembly Technique

2008 ◽  
Vol 47-50 ◽  
pp. 742-745
Author(s):  
Xiao Ping Zou
Keyword(s):  
Carbon Nanotubes ◽  
Self Assembly ◽  
Chemical Vapor ◽  
Ethanol Vapor ◽  
Dip Coating ◽  
Ethanol Solution ◽  
Iron Oxide Nanoparticle ◽  
Catalyst Precursor ◽  
Iron Nitrate ◽  
Assembly Technique

Site-selective growth of multi-walled carbon nanotubes (MWCNTs) from an iron oxide nanoparticle catalyst patterned by drying-mediated self-assembly technique is present. The ethanol solution of the iron nitrate was employed as catalyst precursor. The silicon wafer was mounted catalyst precursor by dip-coating. After solvent evaporation at room temperature, the catalyst pattern formed. The catalyst pattern was subjected to chemical vapor deposition of ethanol vapor after oxidation of iron nitrate. The patterned array of MWCNTs was obtained with a dot size of around 5 (m and the distance between dots of about 25 (m. The locally-ordered patterns of MWCNTs were found. The present method offers a simple and cost-effective method to grow carbon nanotubes with self-assembled patterns.

From Hybrid Films to Mesoorganized Multi-metal-oxide Nanocrystalline Films (M3NF), preparation and characterization.

2004 ◽  
Vol 847 ◽  
Author(s):  
Cédric Boissière ◽  
David Grosso ◽  
Bernt Smarsly ◽  
Torsten Brezesinski ◽  
Sophie Lepoutre ◽  
...  
Keyword(s):  
Data Storage ◽  
Spectroscopic Ellipsometry ◽  
Self Assembly ◽  
Young Modulus ◽  
Processing Parameters ◽  
Dip Coating ◽  
Quasi Equilibrium ◽  
Mesoporous Films ◽  
Time Resolved ◽  
Assembly Mechanism

ABSTRACTHigh quality and reproducible thin silica and non-silica mesoporous films were obtained with mono-oriented organised mesoporosity, fitting various symmetry groups (i.e. p6m, Pm3n, Im3m, …). The Evaporation Induced Self Assembly (EISA) mechanism of structuration was studied through in-situ time-resolved SAXS, interferometry and spectroscopic ellipsometry investigations during dip-coating. A Modulable Steady State (MSS) was found during which the system is in quasi-equilibrium with its environment and during which the final structure is formed. The corresponding Self-Assembly mechanism was found to be governed by a competition between evaporation, micellization and condensation that depend on various critical chemical and processing parameters the influence of which have been summarized into directly usable phase diagrams. Calcined SiO2 and TiO2 mesoporous films structure (pore size and anisotropy, porous volume and surface) and mechanical properties (young modulus) were investigated by UV-Visible spectroscopic ellipsometry. Finally, thanks to a specially designed block copolymer, one further step was accomplished by achieving the dip coating and controlled nano-crystallisation of various metallic and multi-metal-oxides films (M3NF) of composition CoxTi(1-x)O(2-x) with ilmenite or doped Anatase structure, and SrTiO3 and MgTa2O6 with perovskite structure. Attending the well known magnetic, dielectric and catalytic properties of these structures, M3NF are highly compatible with high technology applications in microelectronic, energy transfer devices, spintronic, nano-mechanical adjustments, data storage, oxide fuel cells …

Synthesis of Single and Multipatch Particles by Dip-Coating Method and Self-Assembly Thereof

Langmuir ◽  
2015 ◽  
Vol 31 (4) ◽  
pp. 1255-1261 ◽  
Author(s):  
Manigandan Sabapathy ◽  
Sam David Christdoss Pushpam ◽  
Madivala G. Basavaraj ◽  
Ethayaraja Mani
Keyword(s):  
Self Assembly ◽  
Dip Coating ◽  
Coating Method ◽  
Dip Coating Method

TiO2 Immobilized in RPF-AA Fiber for Photocatalytic Degradation of Low Concentration Methylene Blue in Aqueous Solution

2013 ◽  
Vol 683 ◽  
pp. 38-41
Author(s):  
Liu Xue Zhang ◽  
Hong Wu Xu ◽  
Xiu Lian Wang ◽  
Liang Zhao
Keyword(s):  
Fine Particles ◽  
Photocatalytic Property ◽  
Dip Coating ◽  
Control Agent ◽  
Sem Analysis ◽  
Reactive Polymer ◽  
Pan Fiber ◽  
Mw Irradiation ◽  
Pre Treatment ◽  
Titania Photocatalyst

The reactive polymer fiber with high adsorption capacity and good mechanical properties, RPF-AA, was prepared by the processes of pre-treatment, modification of the commercial PAN fiber. In order to improve the repeating circles of the semiconductor titania photocatalyst and broaden its applications, fine titania particles immobilized in RPF-AA fibers (TiO2/RPF-AA) were prepared successfully at room temperature by a dip-coating method. Tetrabutyl orthotitanate (TBOT) was hydrolyzed in presence of hydrolysis control agent tetrabutylammonium hydroxide (TBA)OH and the TiO2 fine particles were crystallized under microwave (MW) irradiation. The X-ray diffraction (XRD) analyses indicated that the fine particles obtained with MW irradiation have much higher crystallinity with a single phase anatase compared with the non-MW-treated solution. The continuous layers of titania were found on RPF-AA fibers by the scanning electron microscopy (SEM) analysis. The fibers with anatase coatings showed high photocatalytic property and better repetition on the photodegradation of MB. The coated fibers were scattered on the water surface and the catalytic reaction proceeded. After completion the decomposition process, the coated fibers were easily recovered using a filter.

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