Biopolymer-based electromagnetic interference shielding materials
AssigneeSoftware Defined Technologies, Inc.
InventorsDe Yu Zang, Michael M. Salour, James G. Grote
Life of this patent
Estimating the term…
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 metal and carbon-based nano-powders or nanoparticles. The specific makeup of the shielding material and fabrication procedure of the shielding material is also included herein.
Claims32
A method of making an EMI shielding material, the method comprising:
- dissolving DNA in a first amount of de-ionized water for a first period of time to form a DNA solution;
- dissolving CTMA in a second amount de-ionized water for a second period of time to form a CTMA solution;
- making a DNA-CTMA complex by adding the DNA solution to the CTMA solution, thereby causing a DNA-CTMA precipitate to form;
- making an alcohol based DNA-CTMA solution by dissolving the DNA-CTMA precipitate in alcohol;
- and
- making the EMI shielding material by mixing nano-powders or nanoparticles, the nano-powders or nanoparticles being one of metal or semiconductor nano-powders or nanoparticles, with the alcohol based DNA-CTMA solution.
A method of making an EMI shielding material, the method comprising:
- dissolving DNA in a first amount of de-ionized water for a first period of time to form a DNA solution;
- mixing positively charged nano-powders or nanoparticles, the nano-powders or nanoparticles being one of metal or semiconductor nano-powders or nanoparticles, to the DNA solution, in order to make a DNA-nano-powder or nanaprticle solution;
- dissolving CTMA in a second amount de-ionized water for a second period of time to form a CTMA solution;
- making a DNA-CTMA-metal or semiconductor nanopowder or nanoparticle complex by adding the DNA-nano-powder or nanaprticle solution to the CTMA solution, thereby causing a DNA-CTMA-nano-powder or nanparticle precipitate to form;
- making an alcohol based DNA-CTMA-nanopowder or nanoparticle EMI shielding material solution by dissolving the DNA-CTMA-nanopowder or nanoparticle precipitate in alcohol.
A method of making an EMI shielding material, the method comprising:
- dissolving DNA in a first amount of de-ionized water for a first period of time to form a DNA solution;
- dissolving CTMA in a second amount de-ionized water for a second period of time to form a CTMA solution;
- mixing negatively charged nano-powders or nanoparticles, the nano-powders or nanoparticles being one of metal or semiconductor nano-powders or nanoparticles, to the CTMA solution, in order to make a CTMA-nano-powder or nanaprticle solution;
- making a DNA-CTMA-nano-powder or nanoparticle complex by adding the DNA solution to CTMA-nano-powder or nanaprticle solution, thereby causing a DNA-CTMA-nano-powder or nanparticle precipitate to form;
- making an alcohol based DNA-CTMA-nano-powder or nanoparticle EMI shielding material solution by dissolving the DNA-CTMA-nano-powder or nanoparticle precipitate in alcohol.
Dependencies are inferred from the claim text.