METHOD AND SYSTEM FOR LANGMUIR-BLODGETT ASSEMBLY
This invention relates to method and system for forming a film. The method including providing a trough containing water defining an air-water interface between air and the water; providing a solution containing a material of interest; and electrospraying the solution onto the air-water interface of water to form a film of the material of interest at the air-water interface. The system includes a trough containing water defining an air-water interface between air and the water; and means for spreading a solution containing a material of interest onto the air-water interface of water by electrospray, to form a film of the material of interest at the air-water interface. The spreading means comprises an electrospraying device.
1 . A method for forming a film, comprising:
providing a trough containing water defining an air-water interface between air and the water;
providing a solution containing a material of interest; and
electrospraying the solution onto the air-water interface of water to form a film of the material of interest at the air-water interface.
2 . The method of claim 1 , wherein the solution contains a dispersion of the material of interest in water, a water-miscible solvent, or a mixture of them.
3 . The method of claim 1 , wherein the solution contains a stock solution of the material of interest.
4 . The method of claim 3 , wherein the stock solution contains a water-miscible solvent.
5 . The method of claim 4 , wherein the stock solution of the material of interest is devoid of a surface medication or a solvent exchange.
6 . The method of claim 3 , wherein the solution further contains a water-miscible solvent added into the stock solution of the material of interest in water.
7 . The method of claim 1 , wherein the solution contains an aqueous colloidal dispersion.
8 . The method of claim 1 , wherein the material of interest comprises Au/polyvinylpyrrolidone (PVP) particles, polystyrene (PS) beads, polyaniline (PANI) nanofibers, graphene oxide (GO) sheets, nanoparticles of other materials, or biological colloids.
9 . The method of claim 1 , wherein the film is of a monolayer.
10 . The method of claim 1 , further comprising transferring the film to a solid substrate.
11 . An article comprising the film formed according to the method of claim 1 .
12 . A method for forming a film, comprising:
providing a solution containing a material of interest; and
spreading the solution onto an air-water interface of water, without producing air flow to disturb the air-water interface, to form a film of the material of interest at the air-water interface.
13 . The method of claim 12 , wherein the spreading step comprises nebulizing the solution.
14 . The method of claim 12 , wherein the spreading step is performed with electrospraying.
15 . The method of claim 12 , wherein the solution contains a dispersion of the material of interest in water, a water-miscible solvent, or a mixture of them.
16 . The method of claim 12 , wherein the solution contains a stock solution of the material of interest.
17 . The method of claim 16 , wherein the stock solution contains a water-miscible solvent.
18 . The method of claim 17 , wherein the stock solution of the material of interest is devoid of a surface medication or a solvent exchange.
19 . The method of claim 16 , wherein the solution further contains a water-miscible solvent added into the stock solution of the material of interest in water.
20 . The method of claim 12 , wherein the solution contains an aqueous colloidal dispersion.
21 . The method of claim 12 , wherein the material of interest comprises Au/polyvinylpyrrolidone (PVP) particles, polystyrene (PS) beads, polyaniline (PANI) nanofibers, graphene oxide (GO) sheets, nanoparticles of other materials, or biological colloids.
22 . The method of claim 12 , wherein the film is of a monolayer.
23 . The method of claim 12 , further comprising transferring the film to a solid substrate.
24 . An article comprising the film formed according to the method of claim 12 .
25 . A system for forming a film, comprising:
a trough containing water defining an air-water interface between air and the water; and
means for spreading a solution containing a material of interest onto the air-water interface of water, without producing air flow to disturb the air-water interface, to form a film of the material of interest at the air-water interface.
26 . The system of claim 25 , wherein the spreading means comprises an electrospraying device.
27 . The system of claim 26 , wherein an electrospraying device comprises a syringe, connected to a syringe pump to control a flow rate of the solution, having a needle connected to a power supply, and operably positioned above the air-water interface.
28 . The system of claim 27 , further comprising a grounding wire submerged in a water subphase.
29 . The system of claim 25 , wherein the solution contains a dispersion of the material of interest in water, a water-miscible solvent, or a mixture of them.
30 . The system of claim 25 , wherein the solution contains a stock solution of the material of interest.
31 . The system of claim 30 , wherein the stock solution contains a water-miscible solvent.
32 . The system of claim 31 , wherein the stock solution of the material of interest is devoid of a surface medication or a solvent exchange.
33 . The system of claim 30 , wherein the solution further contains a water-miscible solvent added into the stock solution of the material of interest in water.
34 . The system of claim 25 , wherein the solution contains aqueous colloidal dispersions.
35 . The system of claim 25 , wherein the material of interest comprises Au/polyvinylpyrrolidone (PVP) particles, polystyrene (PS) beads, polyaniline (PANI) nanofibers, graphene oxide (GO) sheets, nanoparticles of other materials, or biological colloids.
36 . The system of claim 25 , wherein the film is of a monolayer.