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US 10,762,962 B2Granted
State-changeable device
AssigneeInternational Business Machines Corporation
InventorEmanuel Loertscher
Life of this patent
Estimating the term…
Abstract
A state-changeable device includes a first and a second particle arranged in proximity to each other; and a coupling material between the first and the second particle; wherein the first and the second particle are adapted to provide a charge carrier distribution such that surface plasmon polaritons (SPP) occur; and the coupling material is adapted to exhibit a variable conductivity in response to a trigger signal thereby changing an electro-optical coupling between the first and the second particle.
Claims11
A method, comprising:
- providing a first particle and a second particle arranged in proximity to each other;
- and
- coating the first particle and the second particle with a chemically-switched material coating as a coupling material, wherein metallic or conductive coupling is induced by a pH value change of a liquious environment and wherein the first particle and the second particle are adapted to provide charge carrier distribution such that surface plasmon polaritons (SPPs) occur.
A memory device, comprising:
- at least one state-changeable device having a first memory state associated with a first surface plasmom polariton (SPP) configuration and having a second memory state associated with a second SPP configuration, wherein the at least one state-changeable device comprises a first particle and a second particle coated with a piezoelectric material that changes geometry in response to an external trigger thereby changing the spatial coupling of the first particle and the second particle and the corresponding surface plasmon polaritons (SPP) configuration.
A method, comprising:
- providing a first particle and a second particle arranged in proximity to each other;
- electro-optically coupling the first particle and the second particle through a coupling material, wherein the first particle and the second particle are adapted to provide a charge carrier distribution such that surface plasmon polaritons (SPPs) occur, wherein the first particle and the second particle are nanoparticles;
- and
- providing a first optical waveguide and a second optical waveguide arranged in cross-bar overlapping fashion having at least one state-changeable device comprised of the first particle and the second particle with electro-optical coupling between the intersection region of the cross-bar configuration.
1 more element
Dependencies are inferred from the claim text.