The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 2018
Filed:
Feb. 28, 2014
The Regents of the University of Michigan, Ann Arbor, MI (US);
Nicholas A. Kotov, Ypsilanti, MI (US);
Yoonseob Kim, Ann Arbor, MI (US);
Jian Zhu, Ann Arbor, MI (US);
Matthew Di Prima, Bowie, MD (US);
Bongjun Yeom, Ann Arbor, MI (US);
The Regents of The University of Michigan, Ann Arbor, MI (US);
Abstract
New stretchable electrically conductive composite materials comprising at least one polymer and a plurality of nanoparticles are provided, which exhibit high conductivity even at high strain levels. The composite may comprise polyurethane as the polymer and spherical gold nanoparticles. Such materials have conductivity levels as high as 11,000 Scmat 0% strain and 2,400 Scmat 110% strain. Furthermore, certain embodiments of the composite have a maximum tensile strain of 480% while still exhibiting conductivity of 35 Scm. The inventive materials are highly flexible, highly conductive and suitable for a variety of applications, especially for advanced medical devices, implants, and flexible electronics. The disclosure also provides methods of making such stretchable electrically conductive nanocomposites, including formation by layer-by-layer and vacuum assisted flocculation. In certain embodiments, stretchable chiral plasmonic composite materials for use as optic devices and methods for making them are provided.