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US 11,170,909 B2Granted
Sunflower seed shell dielectric substrates
AssigneeUniversity of North Dakota
InventorsAli Saleh Alshami, Sima Noghanian
Life of this patent
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Abstract
A dielectric substrate made from sunflower seed shells has good moldabiltiy and low water adsorption for use in creating antenna or other devices. The dielectric substrate is made by pyrolizing sunflower seed shells or husks and collecting the resulting tar to create the substrate.
Claims20
An article comprising:
- a dielectric substrate comprising blackened carbon material created from pyrolized sunflower seed shells, wherein the dielectric substrate has a dielectric constant between about 2.5 and 4.0 in super high frequency ranges.
A method of making an article comprising:
- drying sunflower seed shells;
- pyrolizing the sunflower seed shells into tar, char, and volatile compounds;
- collecting the tar;
- drying the tar into a dielectric substrate, wherein the dielectric substrate has a dielectric constant between about 2.5 and 4.0 in super high frequency ranges.
1 more element
A biodegradable radio frequency antenna comprising:
- a dielectric substrate comprising blackened carbon material created from pyrolized sunflower seed shells
- wherein the dielectric substrate has a dielectric constant of between about 2.5 to about 4.0 in super high frequency ranges, a loss tangent measurement of about 0.00 to about 0.42 in super high frequency ranges, a reduce modulus measurement of about 0.39 GPa, a Young's modulus measurement of about 0.35 GPa, a hardness of about 0.98 MPa, and a water absorption of about 0.45 percent.
Dependencies are inferred from the claim text.