Apparatus and method for controllably populating a channel with charge carriers
AssigneeNokia Technologies Oy
InventorsElisabetta Spigone, Piers Andrew
Life of this patent
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Abstract
An apparatus comprising: a channel (4) configured to conduct charge carriers; and a charge carrier generator (22) configured to generate charge carriers for populating the channel, wherein the charge carrier generator is configured for resonance energy transfer (FRET). The charge carrier generator may be a nanoparticle or quantum dot (22), functionalised with at least one moiety (28A, 28B) to enable detection of an analyte. The charge carrier generator may also be a nanoparticle or quantum dot (22) configured to photo-generate charge carriers. The channel (4) may be made of a material having a very high carrier mobility like graphene or carbon nanotubes.
Claims11
An apparatus comprising:
- a substrate;
- a material having a high charge carrier mobility, said material being supported on said substrate;
- a conductive channel in said material;
- at least two electrodes separated from one another along said conductive channel to detect at least one change in a population of charge carriers in the channel;
- and
- a charge carrier generator overlying said conductive channel and being provided to generate charge carriers for populating the conductive channel, the charge carrier generator including a plurality of quantum dots capable of resonance energy transfer, wherein the plurality of quantum dots have at least one modifiable functionalization, the modifiable functionalization changing under actuation between a first configuration and a second configuration, the change in configuration controlling the resonance energy transfer whereby charge carrier generation by the charge carrier generator is modified to affect an electrical conductivity of the conductive channel.
Dependencies are inferred from the claim text.