WiSys: T170056WO01

  • Patent applied for.

Novel Transparent Dilatant Materials Comprised of Single Chemical Component


John Droske

WiSys is seeking a strategic partner in material science or the protective equipment industry who is interested in furthering the development of novel transparent dilatant materials comprised of a single chemical component, ultimately providing a path to market for their use.
OVERVIEWDilatant materials are non-Newtonian, shear thickening fluids whose shear viscosity increases with shear stress. Since these materials harden on sudden impact, they have shown great promise for use in a variety of areas, ranging from personal protective equipment and body armor to vehicular traction control and protective cases for portable electronics. However, few such materials exist, which limits their use. In addition, controlling the transparency of dilatant materials has proven to be difficult due to the two-phase nature of most shear thickening fluids and this has to date limited their use in areas such as armored glass or auto windshields.
THE INVENTIONResearch from the University of Wisconsin-Stevens Point has resulted in the synthesis of a series of materials exhibiting a range of dilatant properties. The materials show good transparency and are chemically uniform (e.g. consisting of a single chemical component). The degree of dilatancy is easily controlled by adjusting the compositions of the materials. Due to the range of dilatant properties, good transparency, and single chemical component nature of the dilatant samples, these materials show significant promise for novel uses in protective equipment and other areas related to impact protection, especially where transparency is desirable.
  • Platform technology
  • Impact protection
  • Shock absorption
  • Armored and protective glass
  • Materials display excellent dilatant properties
  • Degree of dilatancy can be modified by adjusting monomer composition of polymer
  • Transparency is easily controlled
  • Excellent adhesive properties suitable for layered glass applications
STAGE OF DEVELOPMENTLaboratory-scale synthesis and preliminary characterization of dilatancy has been achieved. Quantitative determinations of non-newtonian properties have not yet been completed although qualitative observations are notable.
Contact Information
For current licensing status, please contact Jennifer Souter at or (608) 316-4131.
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WiSys Technology Foundation serves the University of Wisconsin System comprehensive campuses by patenting and licensing discoveries to leading companies in Wisconsin, the United States and worldwide. Established in 2000 by the Wisconsin Alumni Research Foundation (WARF) and the UW System, WiSys is building the next generation of patent and licensing opportunities by fostering collaborations among campuses, private research organizations and industry, facilitating high-tech research with grant programs, and promoting student training for employment in a knowledge-based economy. WiSys's income is distributed to the UW campuses, the inventors and their departments to grow future discoveries and educational opportunities.