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Nanoparticle separation methods and compositions
US9283570B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9283570-B2 |
| Application number | US-201113115777-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 25, 2011 |
| Priority date | May 25, 2010 |
| Publication date | Mar 15, 2016 |
| Grant date | Mar 15, 2016 |
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- Title
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- Abstract
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Abstract
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Methods of separating one type of nanoparticle from another type of nanoparticle in a mixture including more than one type of nanoparticle are disclosed. The methods may include suspending a mixture of the various types of nanoparticles in a liquid and modifying a characteristic of the liquid. Thereafter, a force may be applied to the nanoparticles within the mixture causing one type of nanoparticles to separate from another type of nanoparticles. The applied force may be the force of gravity, or it may be an induced force such as a centrifugal force applied with a centrifuge or similar apparatus. Upon the occurrence physical separation, sub-populations of nanoparticles may be removed from the suspension or segregated. Alternatively the methods may include modifying a type of nanoparticle in suspension. Alternative embodiments include nanoparticles modified in suspension to provide for separation from other types of nanoparticles.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of separating a mixture of more than one type of nanoparticle according to nanoparticle type, the method comprising: suspending the mixture of more than one type of nanoparticle in a suspension liquid having a viscosity; modifying the viscosity of the suspension liquid by adding a second liquid having a different viscosity to the suspension liquid to create a modified suspension liquid; applying a force to the mixture of more than one type of nanoparticle suspended in the modified suspension liquid, causing physical separation of the nanoparticles by type; and removing a selected portion of the separated nanoparticles from the modified suspension liquid. 2. The method of separating a mixture of more than one type of nanoparticle according to nanoparticle type of claim 1 further comprising modifying the temperature of the suspension liquid. 3. The method of separating a mixture of more than one type of nanoparticle according to nanoparticle type of claim 1 further comprising modifying the pressurization of the suspension liquid. 4. The method of separating a mixture of more than one type of nanoparticle according to nanoparticle type of claim 3 wherein the suspension liquid is water. 5. The method of separating a mixture of more than one type of nanoparticle according to nanoparticle type of claim 1 wherein the suspension liquid is selected to not contaminate one or more of the nanoparticle types. 6. The method of separating a mixture of more than one type of nanoparticle according to nanoparticle type of claim 1 further comprising utilizing a first portion of the separated nanoparticles as a taggant and recycling a second portion of the separated nanoparticles.
Assignees
Inventors
Classifications
Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title
using heavy liquids or suspensions · CPC title
- B03B13/005Primary
Methods or arrangements for controlling the physical properties of heavy media, e.g. density, concentration or viscosity · CPC title
using centrifugal force · CPC title
enhancement Raman, e.g. surface plasmons · CPC title
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- What does patent US9283570B2 cover?
- Methods of separating one type of nanoparticle from another type of nanoparticle in a mixture including more than one type of nanoparticle are disclosed. The methods may include suspending a mixture of the various types of nanoparticles in a liquid and modifying a characteristic of the liquid. Thereafter, a force may be applied to the nanoparticles within the mixture causing one type of nanopar…
- Who is the assignee on this patent?
- Shojaei Borzoyeh, Chan George Hanki, Sicpa Holding Sa
- What technology area does this patent fall under?
- Primary CPC classification B03B13/005. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 15 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).