JPS63236566A - Membrane formation - Google Patents

Abstract

PURPOSE:To prevent the uneven flowing of a membrane and thereby manufacture a membrane of superior quality by compressing a monomolecular membrane evenly from all directions with a hydrophobic belt formed like a ring which is used as a barrier. CONSTITUTION:A ring of teflon belt 4 with a hydrophobic surface is reduced by permitting a shaft 7 and a pipe 8 to slide relatively while narrowing one end of the ring from both sides using bobbin pulleys 6. Then a monomolecular membrane which spreads on the water surface is compressed. Further, a space is provided between the two bobbing pulleys 6b so as not to form a broken membrane. A reinforcement 5 consisting of an elastic plastic resin, etc. is stuck on the upper side of the belt 4 at a location where it does not touch the liquid so that the ring is always maintained in the form of a circle. A uniform membrane having high molecular orientation is formed by compressing the monomolecular membrane evenly from all directions.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a film forming method for preventing film non-uniformity that occurs when compressing a monomolecular film.

Conventional technology and its problems> Conventionally, a monomolecular film developed on a water surface is transferred to the surface of a solid substrate, and a monomolecular film or a monomolecular film is deposited on the substrate.
A method (Langmuir-Prodgett method) of forming a thin film made of an A-layer film is known.

Currently, compression of h1-related monolayers on the water surface is achieved by moving a barrier from one direction or by applying pressure between two facing barriers toward the center. However, in this method, the film flows in the direction of movement of the barrier during compression, and the film is not uniform.The behavior of this monomolecular film on the water surface is schematically shown in Fig. 1 (a).
As shown in the figure, it is possible to observe the compression state of the membrane by applying sulfur powder at equal intervals on a monomolecular membrane spread on the water surface, and then moving barrier 1 to increase the surface pressure. can. The situation is shown in FIG. 1(b).

Furthermore, in order to accumulate 5 bites, the substrate 3 was inspected using a round microscope as shown in Figure 1 (.). 2. It has been revealed that the mohorozo of dance is different between the center and the edges of the substrate. In this way, Hungmuir Pronoët)
Since the (LB) film is obtained by accumulating one molecular film on the water surface, the flow of the film at the interface becomes a serious problem in the production of the L[3 film.

<Objective of the Invention> The object of the present invention was made in consideration of the above-mentioned problems and costs. Instead of compressing the monolayer by moving the barrier in one direction or in both directions, it is possible to compress the monolayer evenly from all directions. By compressing the membrane, the pressure concentrates toward the center, which prevents uneven flow of the membrane and creates a high-quality membrane.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 2 shows a perspective view of the basic form of the invention.

As shown in the figure, one end of a loop made of a Teflon band 4 with a hydrophobic surface is threaded from both sides by a spinning wheel type pulley 6, and the shaft 7 and pipe 8 are slid relative to each other to make the loop. Hit the compression of the monomolecular film that is contracted and expanded on the water surface. Incidentally, a space is left between the openings of the two spinning wheel type slides 11161+ so as not to form a collapsing film. The ring 4 made from the strip of tare is made of elastic plastic wood as a reinforcing material 5 so that it always maintains a circular shape regardless of the size of the clean area, so that it does not come into contact with the liquid on the two sides of the band. It is glued in place.

Instead of this, a stainless steel band with Teflon treated on both the inner and outer sides (or only the inner side may be used) may be used as a reinforcing material.

FIG. 13 is a perspective view showing an embodiment of a device for concentrically enlarging and contracting rings. 5. A slider equipped with an id mechanism to spread the Teflon band ring 4 in a circular shape; 129 a driving VC device for concentrically expanding and contracting the wheels; 141 a reinforcing member to hold the wheels in a circular shape; Water treetops 2. It consists of a movable arm 11 for moving the base@3 and the substrate 33 up and down.

Explain to the dog the mechanism for moving the barrier in concentric circles. In order to shrink the Teflon ring 4 into a concentric circle,
Rails 13 are arranged on a radial line, and a slider 12 is installed on each rail 13 and moved toward the center at the same time and at the same speed. As shown in FIG. 4 when viewed from the back side, each slider 12 is fitted with a holding mechanism using two pincushion-type pulleys 6C made of Teflon. The slider 12 has a structure in which one side of the wire 16 is fixed with a wire stopper 19, and the other wire moves smoothly inside the vibrator 21.

Move slider 12 8! This is shown in Figure 5.

The rotation of the motor 15 is controlled by a pulley 17'1 via a wire 16.
Niimuwaru. The slider 12' fixed by the wire stopper 191 moves to the left in the figure by the distance the wire moves. Further, the slider 12 arranged on the circumference is also moved toward the center through the movement of the wire 16. The slider after compression is at the position of slider 18, which is indicated by a broken line. When each slider 12 moves by Xe16 toward the center, that is, the radius of the circle becomes shorter by XCm.
Deafness is 2πxc+a loosened, pincushion groove $12
Make sure to constantly pull the loose belt by moving it ゛ to the center of the circle by ゛ x (π sochi-1) cm. This problem can be easily solved by setting the ratio to 1:2°14.

FIG. 6 shows a comparison of the ring sizes before and after compression that can be achieved by this mechanism.

As shown in FIG. 3, holes 22 are made at the intersections of the rails 13 so that the board 3 can be placed at the center of the circle and the circles can be accumulated.

In the above embodiment, the number of rails in FIG. 3 is eight, but the number may be increased further. In this embodiment, the slider 13 is moved using a drive propagation method using a wire 16, but it is also possible to use a belt or (iI wheel) in combination to ensure that the force is transmitted without slipping. Movement using a piston expansion/contraction mechanism and a linear motor!
I! You may use lJ Isokai.

Also, Teflon-equipped method, instead of t, when the area is reduced, the surplus = 5
It will not wither even if you use a thiamin-treated product.

In addition, as shown in Figure 7, the material of the barrier is changed to a donor material.
A complicated mechanism can be omitted if the inner area is reduced by using a strained tube 23 as a barrier and adjusting the 2L:A pressure inside the tube through the air hole 24.

<Effects of the Invention> According to the present invention described above, the conventional 1. It is possible to prevent film nonuniformity that occurs when compressing the lj molecular film, and to form a uniform monomolecular film or monomolecular cumulative film with high molecular orientation.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of membrane flow due to the compression method of the nail molecular membrane, Fig. 2 is a perspective view showing an embodiment of the present invention, Fig. 3 is a perspective view of an embodiment in which rings are contracted concentrically, and Fig. Figure 1 is an explanatory diagram of the mechanism for moving the slider, Figure 6 is a plan view from above showing changes in the size of the ring, and Figure 7 and 1 is a perspective view showing an embodiment using a donut-shaped tube. . In the figure 1... Barrier 2... Water tank 3... Substrate 460. Teflon band 5... Reinforcement material 6... Pinwheel type pulley 7... Shaft 8... Pipe 9... Support part 10... Spacer 11..." Lower arm 12... Slider 13...Rail 14...Drive device 15...Motor 1G...Wire 17...Pulley 18...Slider 19...Wire stopper 20...Shaft 21...Vibe 23...・Doughnut-shaped tube 24...Air hole agent Sut or more Takeshi Sugiyama (1 other person) (a) (b) First cause procedural amendment (formality) (Japan Patent Office) 1. Special indication of the case Application No. 62-72609 2. Name of the invention Film forming method 3. Relationship with the case of the person making the amendment Patent applicant address @ 545 22-22 Nagaike-cho, Abeno-ku, Osaka-shi
l;. Name (504) Sharp Corporation Representative Haru Tsuji Usui 4, Agent Figure 5" is corrected.

Claims (1)

[Claims] 1. A ring-shaped band with a hydrophobic surface is used as a barrier, and the area within the ring is reduced concentrically to compress the monomolecular film spread on the water surface. A film formation method that uses 2. The structure according to claim 1, characterized in that the ring is concentrically reduced and the position of the center of the circle is fixed by moving a slider attached to a rail arranged on a radial line to the center. Membrane method. 3. The film forming method according to claim 1, characterized in that a highly elastic material is attached to the band as a reinforcing material so that the band spreads in a circular shape. 4. The film forming method according to claim 1, characterized in that the band is made of a material that is stretchable and has a hydrophobic surface so that there is no need to pull the excess band when the area is reduced. 5. Claim 1, characterized in that the band is made of a doughnut-shaped tube made of a stretchable material with a hydrophobic surface, and the inner area is reduced by changing the air pressure inside the tube. The film-forming method described in section.