Method for forming nanoparticle films and application thereof
First Claim
1. A method for making a nanoparticle film comprising:
- dispersing nanoparticles in a first liquid, the first liquid capable of dissolving at least a portion of the nanoparticles;
adding a second liquid to the first liquid to form a nanoparticle film on top of a solution comprising the first liquid, the second liquid and the nanoparticles, wherein the second liquid has a dielectric constant that is different from a dielectric constant of the first liquid; and
contacting a substrate with the solution to deposit the nanoparticle film onto the contacted portion of the substrate.
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Accused Products
Abstract
Disclosed herein is a method for making a nanoparticle film comprising dispersing nanoparticles in a first liquid; adding a second liquid to the first liquid to form a nanoparticle film on top of a solution comprising the first liquid, the second liquid and the nanoparticles, wherein the second liquid has a dielectric constant that is different from a dielectric constant of the first liquid; and contacting a substrate with the solution to deposit the nanoparticle film onto the contacted portion of the substrate. Disclosed herein too is a method for detecting an analyte comprising dispersing nanoparticles in a first liquid; adding a second liquid to the first liquid to form a nanoparticle film on top of a solution comprising the first liquid, the second liquid and the nanoparticles, wherein the second liquid has a dielectric constant that is different from a dielectric constant of the first liquid; contacting a substrate with the solution to deposit the nanoparticle film onto the substrate; disposing upon the nanoparticle film an analyte; and performing surface enhanced Raman spectroscopy to determine the identity of the analyte.
22 Citations
20 Claims
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1. A method for making a nanoparticle film comprising:
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dispersing nanoparticles in a first liquid, the first liquid capable of dissolving at least a portion of the nanoparticles; adding a second liquid to the first liquid to form a nanoparticle film on top of a solution comprising the first liquid, the second liquid and the nanoparticles, wherein the second liquid has a dielectric constant that is different from a dielectric constant of the first liquid; and contacting a substrate with the solution to deposit the nanoparticle film onto the contacted portion of the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An article comprising the a nanoparticle film, said nanoparticle film comprising a plurality of nanoparticles, each of said plurality of nanoparticles including a core comprised of a ceramic material or a polymer, and a metal coating disposed on said core.
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17. A method for detecting an analyte comprising:
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dispersing nanoparticles in a first liquid, the first liquid capable of dissolving at least a portion of the nanoparticles; adding a second liquid to the first liquid to form a nanoparticle film on top of a solution comprising the first liquid, the second liquid and the nanoparticles, wherein the second liquid has a dielectric constant that is different from a dielectric constant of the first liquid; contacting a substrate with the solution to deposit the nanoparticle film onto the substrate; disposing upon the nanoparticle film an analyte; and performing surface enhanced Raman spectroscopy to determine the identity of the analyte. - View Dependent Claims (18, 19, 20)
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Specification