20-03-2014 дата публикации
Номер: US20140079884A1
The disclosure provides materials, apparatuses, and methods for making multilayer coatings with a high degree of efficiency and control. In some aspects, for example, coatings are described having multiple layers of nanoparticles and a polyelectrolyte, wherein the nanoparticles form tightly packed monolayers. The interface between monolayers may include polyelectrolyte material. One or more aspects of such monolayers and interfaces are controllable. 1. A method for a rapid and high transfer efficiency deposition process for forming a half bilayer for layer-by-layer assembly , the method comprising:{'sub': dep', 'dep, 'claim-text': {'br': None, 'i': C', 'C', 'd', 'C', '/C, 'sub': s', 'B', 'dep', 's', 'B, '/(·eff)≧≧()'}, '(a) forming a layer of a deposition solution containing a deposition material on a surface with a thickness (d), wherein dis given by{'sub': dep-min', 'dep-min', 'dep-min, 'claim-text': {'br': None, 'i': t', '≧C', 'C', '·D, 'sub': dep-min', 's', 'B, 'sup': 2', '2, '/()'}, '(b) maintaining a minimum wait time (t) of contact between the deposition solution and the surface, wherein during tthe half bilayer is formed, and wherein tiswherein:{'sub': 's', 'Cis the desired 2-dimensional concentration of deposition material on the surface;'}{'sub': 'B', 'Cis the bulk concentration of deposition material in the deposition solution;'}{'sub': 'dep', 'dis the thickness of the layer of deposition solution on the surface;'}eff is the transfer efficiency of deposition material and is greater than 0.03; andD is the diffusion coefficient of the deposition material in the deposition solution;{'sub': 'dep-min', 'tis the minimum wait time and is less than 10 seconds;'}and the thickness of the formed half bilayer is less than or equal to the thickness of a monolayer of the deposition material.2. The method of claim 1 , comprising applying a rinse solution to the surface to remove excess deposition solution claim 1 , wherein the applying forms a residual rinse layer ...
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