Abstract:
Disclosed is an apparatus for graphene wet transfer, which includes: a reservoir body having at least two reservoirs; a barrier structure located on the reservoir and having at least one separated space formed by barriers; and a substrate frame located below the barrier structure and having at least one substrate accommodation groove for accommodating a target substrate to which graphene is transferred. Here, each reservoir may be filled with a solution for a wet transfer process, and the graphene may be separately located in each separated space in a floating state in the solution.
Abstract:
The present invention provides an apparatus for producing a Langmuir-Blodgett film including a water bath having a spread region for spreading a material for forming a single molecular film on a liquid surface, a compression region for compressing the material spread by the spread region to form a single molecular film, and a lamination region for laminating the single molecular film formed by the compression region on a substrate. The apparatus further includes a first flow path for discharging a liquid, which flows from the spread region of the water bath, to the outside of the water bath through the compression region and the lamination region, a first valve for controlling the amount of the liquid discharged through the first flow path, a second flow path for discharging the liquid, which flows from the spread region of the water bath, from the boundary between the compression region and the lamination region through the compression region, and a second valve for controlling the amount of the liquid discharged through the second flow path.
Abstract:
Method for modifying the surface properties of synthetic polymer fibers by coating the fibers with ultrathin organic monolayer films according to the Langmuir-Blodgett coating technique. The inventive method substantially reduces the amount of coating necessary to modify the surface properties of such fibers compared to conventional finishing techniques.
Abstract:
A method of forming a monomolecular film capable of independently controlling the process of forming a monomolecular film and the process of removing a part of the monomolecular film which has not been used in monomolecular film formation. The method includes, in addition to spreading a material for forming a monomolecular film onto a water surface, compressing the material on the water surface thereby transforming the material into a monomolecular film, and transferring the monomolecular film on the water surface onto a substrate, storing in a first region a part of the monomolecular film which has not been transferred to the substrate. The first region is located at a distance from a second region for preparing the monomolecular film with respect to a third region for transferring part of the film to the substrate, and has a water level lower than that of the third region.
Abstract:
The invention concerns a method for continuously producing a monomolecular film at a liquid-gas interface in a trough, by means of a barrier element rotating horizontally around a vertical shaft, which barrier moves the film from a film formation compartment through a connection zone to a deposition compartment to be deposited onto a substrate. On the opposite side of the barrier with respect to the rotational direction of the barrier element, more film forming substance is added to the liquid surface for forming a new film, which in turn is transferred by a rotating barrier element at a suitable surface pressure to elastically join the first mentioned film as an extension to the same. The invention also concerns a trough apparatus for continuously producing films.
Abstract:
A trough for the formation of a monomolecular layer of an organic film on a frame preferably having top and bottom separable frame portions. A plate is disposed within the frame and is formed of a rigid substance. A sealing element of chemically inert material is positioned between the top of the plate and the top frame portion and preferably comprises a perfluoroelastomeric material that is conformable to the top of the plate and to the top frame portion to prevent subphase leakage from the trough. Apparatus is provided for laterally compressing a layer of amphipilic solution deposited on the subphase to form a solid monomolecular film. The apparatus includes a movable barrier dimensioned to rest to superposed relation on the plate. An additional sealing element of chemically inert material may be spaced adjacent to the above-mentioned sealing element, and also positioned between the top of the plate and the top frame portion for cooperating with the above-mentioned sealing element to prevent the subphase from reaching the frame.
Abstract:
A method and apparatus for forming an LB film on a substrate in which the film is deposited by raising and lowering the surface of the liquid on which the group of molecules is spread relative to the substrate.
Abstract:
An apparatus for depositing a mono-molecular layer on a substrate surface comprises first and second containers which contain a liquid and are connected via a connecting passage, and a pressure applying mechanism for applying pressure on the liquid in the second container. A mono-molecular layer is formed at the liquid surface of the liquid in the first container, and the mono-molecular layer is deposited on the substrate surface by controlling the pressure applying mechanism so that the liquid surface of the first container rises and falls with respect to the substrate which is essentially stationary.
Abstract:
An apparatus for depositing a mono or multimolecular layer film on a substrate has a trough (1) in which the liquid sub-phase (W) is received, the sub-phase carrying a monomolecular layer film of e.g. a diacetylenic fatty acid. The apparatus has a barrier system (4) consisting of a boom (40) which is pivotted on the center of a rigid spoked ring (42) and pivotable towards and away from the adjacent spoke to compress the molecular layer the desired amount. The vertical position of the ring is adjustable by bolts (24) to position the upper surface of the adjacent spoke (41) and lower surface of the boom (40) below but not through the liquid surface. This enables the monomolecular layer to be compressed without leakage of molecules and also allows contaminants to be collected by sweeping the boom across the surface before the layer is added.
Abstract:
A barrier assembly for a Langmuir trough is arranged for a substrate to be carried automatically to-and-fro on a dipping head over a fixed barrier into monomolecular layers A, B on a common subphase so as to stack layers ABABAB . . . on the substrate. The layers A, B are confined by the barrier and two constant perimeter areas formed by a single flexible band passing over rollers. By adjusting the positions of bridges that carry some of the rollers, the confined areas can be contracted to compress the layers A, B. In an alternative mode the substrate receives a layer from layer A while a new layer B is being formed, the substrate then being transferred to layer B while a new layer A is being formed. This involves an oscillating rather than a rotating movement of the substrate.