US Patent Issued to National Technology & Engineering Solutions of Sandia on Aug. 4 for "Systems and methods for controlling subcritical fracturing via chemical complexation reactions at the crack tip" (New Mexico Inventors)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,443, issued on Aug. 4, was assigned to National Technology & Engineering Solutions of Sandia LLC (Albuquerque, N.M.).

"Systems and methods for controlling subcritical fracturing via chemical complexation reactions at the crack tip" was invented by Anastasia G. Ilgen (Albuquerque, N.M.) and Robert C. Choens II (Albuquerque, N.M.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The choice of anion in aqueous fluid composition therefore enables enhancing or arresting subcritical crack growth in crystalline and amorphous solids. The fluid composition selected based on anion's ability to form complexes with cation in the fracturing solid can be injected aro...