US Synthetic Corporation

University of Hawai'i

Daniel Marin Scott

Mark Pehrson Chapman

Daren Nathaniel Heaton

Jeremy Brett Lynn

Oakley D Bond

BorYann Liaw

A method of processing a superabrasive element includes providing a superabrasive element including a polycrystalline diamond table that includes a metallic material disposed in interstitial spaces defined within the polycrystalline diamond table. The method also includes leaching the metallic material from at least a volume of the polycrystalline diamond table to produce a leached volume in the polycrystalline diamond table.

Leached superabrasive elements and systems, methods and assemblies for processing superabrasive materials

A method of processing a superabrasive element includes providing a superabrasive element including a polycrystalline diamond table that includes a metallic material disposed in interstitial spaces defined within the polycrystalline diamond table. The polycrystalline diamond table includes a superabrasive face and a superabrasive side surface extending around an outer periphery of the superabrasive face. The method also includes leaching the metallic material from at least a volume of the polycrystalline diamond table to produce a leached volume in the polycrystalline diamond table by (1) exposing at least a portion of the polycrystalline diamond table to a processing solution, (2) exposing an electrode to the processing solution, and (3) applying a charge to the electrode such that a voltage is generated between the polycrystalline diamond table and the electrode and the voltage is applied to the processing solution. The method includes the use of an improved processing solution, including an organic acid and a divalent (e.g., Group II) metal salt, to increase the leaching depth.

Group II metal salts in electrolytic leaching of superabrasive materials

Abiotic fuel cell and battery designs employing chemical dyes in alkaline solutions are disclosed. The fuel cells and batteries are capable of harnessing electrical power from various carbohydrates, including, but not limited to, glucose; in an anode design that does not require catalysts or membranes to separate half-cell reaction chambers. In certain embodiments, the abiotic fuel cell or battery designs may further employ electrodes, such as high surface area carbon materials and commercial air breathing electrodes, without the use of catalysts for glucose oxidation (i.e., precious metals or biocatalytic species). In further embodiments, organic dyes, including but not limited to, methyl viologen (MV), methylene blue, methylene green, Meldola's blue, indigo carmine, safranin O, and the like, may serve as the electron mediators. In some embodiments, the fuel cells or batteries are capable of generating power on the order of about tens of mW/cmfrom glucose and/or other types of sugars.

Growing community of inventors

Laie, HI, United States of America

Daniel Marin Scott