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US 2021/0400855 A1Published application
Biopolymer-based electromagentic interferrence shielding materials
AssigneeSoftware Defined Technologies, Inc.
InventorsDe Yu Zang, Michael M. Salour, James G. Grote
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Abstract
An electromagnetic interference (EMI) shielded device which includes an object to be shielded and an EMI shielding material encompassing the object. The EMI shielding material is made up of, but not limited to a broadband biopolymer or polymer dissolved in organic solvents and shielding guest material. The specific makeup of the shielding material and fabrication procedure of the shielding material is also included herein.
Claims44
An electromagnetic interference (EMI) shielding material, comprising:
- a biopolymer or polymer, dissolved in organic solvents, and shielding guest materials;
- the shielding guest materials comprising at least one of particles, powders, tubes or rods, flakes, fiber or sheets.
A method of making an EMI shielding material, the method comprising:
- dissolving DNA or RNA in a first amount of de-ionized water for a first period of time to form a DNA or RNA solution;
- dissolving a surfactant in a second amount de-ionized water for a second period of time to form a surfactant solution;
- making a DNA or RNA-surfactant complex by adding the DNA or RNA solution to the surfactant solution, thereby causing a DNA or RNA-surfactant precipitate to form;
- making an organic solvent-based DNA or RNA surfactant solution by dissolving the DNA or RNA-surfactant precipitate in an organic solvent;
- and making the EMI shielding material by mixing shielding guest materials;
- the shielding guest materials comprising at least one of particles, powders, tubes or rods, flakes, fiber or sheets, with the organic solvent based DNA or RNA-surfactant solution;
- finally crosslinking the EMI shielding material if required.
4 more elements
Dependencies are inferred from the claim text.