Separation of nanostructures
AssigneeMassachusetts Institute of Technology
InventorsMichael S. Strano, Woo-Jae Kim
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Abstract
The present invention generally relates to the separation of one or more populations of nanostructures from one or more other populations of nanostructures based upon differences in density. An overall mixture of very similar or identical nanostructures may be exposed to a set of conditions under which one population of the nanostructures is affected differently than the other, allowing separating on the basis of differences in density.
Claims19
A method for separating nanostructures, comprising:
- providing a plurality of nanostructures;
- exposing the nanostructures to a diazonium salt such that a first population of the plurality of nanostructures reacts with the diazonium salt and a second population of the plurality of nanostructures does not react with the diazonium salt;
- separating the first and second populations based upon a difference in density.
A method for separating nanostructures, comprising:
- exposing a plurality of nanostructures to a set of conditions under which a first population of the plurality of nanostructures is modified in a manner affecting the density of individual members of that population differently than a second population of the plurality of nanostructures;
- and
- separating the first and second populations using a centrifuge with a relative centrifugal force of less than about 100,000 g.
A method for separating nanostructures, comprising:
- exposing a plurality of nanostructures to a set of conditions under which a first population of the plurality of nanostructures is modified such that the average density of the individual members of the first population is at least about 100 kg/m3 greater than the average density of the individual members of a second population of nanostructures;
- and
- separating the first and second populations based upon the difference in densities.
A method for separating nanostructures, comprising:
- exposing a plurality of nanostructures to a set of conditions under which a first population of the plurality of nanostructures is modified such that the average density of the individual members of the first population is at least about 10% greater than the average density of the individual members of a second population of nanostructures;
- and
- separating the first and second populations based upon the difference in densities.
Dependencies are inferred from the claim text.