Colloidal crystal with diamond lattice structure and manufacturing method thereof
A technology of colloidal crystals and lattice structures, applied in colloidal chemistry, crystal growth, colloidal chemistry, etc., can solve problems such as difficulty in application and shortened reach distance of electrostatic interaction
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Embodiment approach 1
[0059] Image 6 It is a process chart which shows the manufacturing process of the colloidal crystal which has a diamond lattice structure in Embodiment 1. Hereinafter, description will be given based on this process diagram.
[0060]
[0061] First, a first charged colloid dispersion liquid is prepared. The volume ratio of the first charged colloid particles in the first charged colloid dispersion liquid is 17±2% (ie, 15% to 19%). The type of colloidal particles to be dispersed in the dispersion is not limited, and examples thereof include particles composed of inorganic substances such as silica, alumina, and silicate compounds, and particles composed of organic substances such as polystyrene, polyethylene, and acrylic resin. particles, etc. These colloidal particles are dispersed as charged colloidal particles having a positive or negative surface charge, and the charged colloidal particles repel each other by the Coulomb force, and by standing still, the charged collo...
Embodiment approach 2
[0071]In the method of Embodiment 2, when the first layer forming step S1 is performed, a liquid layer composed of the first colloidal dispersion liquid is formed on the substrate, and the charge adjustment liquid is diffused from one end side of the liquid layer to grow colloids The monolayer structure of crystals (ie, two-dimensional charged colloidal crystals). A schematic diagram showing a manufacturing process diagram is shown in Figure 9 . Below, according to Figure 9 Be explained.
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[0073] As substrates, two substrates 21a and 21b composed of a glass substrate, a ceramic substrate, and a silicon substrate are prepared, and they face in parallel with a certain distance therebetween through spacers (not shown). The membrane filter 22 is inserted into one end side of 21b.
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[0075] Then, as the liquid layer forming step S22, the liquid layer 23 composed of the first colloidal dispersion liquid is formed. As a method for this, the following two m...
Embodiment 1
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[0118] The cover glass for optical microscope (manufactured by Matsunami Glass Ind., Ltd.) was immersed in concentrated sulfuric acid for 24 hours, turned over and immersed for 24 hours, washed with water, and further washed with ethanol, and then kept in a constant temperature bath at 65°C. It was dried for 2 hours to prepare a glass substrate.
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[0120] Next, a toluene solution (0.1%) of 3-aminopropyltriethoxysilane (APTES) was put into a glass petri dish, and the glass substrate was immersed. After 2 hours, the glass substrate was taken out, ultrasonically cleaned in toluene, in a 1:1 toluene / methanol solution, and in methanol for 3 minutes, respectively, and then dried at 65° C. for 16 hours. In this way, by modifying the silanol group of the glass substrate with 3-aminopropyltriethoxysilane (APTES), an APTES-modified glass substrate in which a positive charge is introduced into the surface through an amino group is obtained.
[0121] Next, an eight-c...
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Abstract
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