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US 9,437,628 B1Granted
Biodegradable microwave electronic devices
AssigneeWisconsin Alumni Research Foundation
InventorsZhenqiang Ma, Yei Hwan Jung, Shaoqin Gong, Tzu-Hsuan Chang
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Abstract
Substantially biodegradable microwave integrated circuits and method for making the microwave integrated circuits are provided. The integrated circuits, which have applications in high performance flexible microwave and digital electronics, utilize biobased, biodegradable cellulose nanofibril films as a substrate and comprise only very small amounts of potentially toxic inorganic materials.
Claims17
A microwave integrated circuit comprising:
- microwave integrated circuitry comprising active components and passive components, wherein at least one of the active components comprises a Group III-V semiconductor;
- and
- a biodegradable, dielectric integrated circuit substrate in contact with one or more of the active and passive components;
- wherein the integrated circuit substrate comprises an optically transparent film comprising cellulose nanofibrils and a hydrophobic polymer coating.
1 more element
A method of making a microwave integrated circuit, the method comprising:
- forming passive and active components for a microwave integrated circuit on one or more non-biodegradable substrates, wherein at least one of the active components comprises a Group III-V semiconductor;
- releasing the passive and active components from the one or more non-biodegradable substrates;
- and
- transferring the passive and active components onto a biodegradable, dielectric integrated circuit substrate, such that the passive and active components form the integrated circuitry of the microwave integrated circuit;
- wherein the biodegradable, dielectric integrated circuit substrate comprises an optically transparent film comprising cellulose nanofibrils and a hydrophobic polymer coating.
2 more elements
Dependencies are inferred from the claim text.