Lawrence Livermore National Security, LLC

Other

William Augustus Steele

Michael D Feit

Tayyab Ishaq Suratwala

Lana Louie Wong

Philip Edward Miller

Jeffrey Devin Bude

Ted Alfred Laurence

Nan Shen

Phillip E Miller

Daniel C Mason

Rebecca Dylia-Spears

Paul Geraghty

Lana L Wong

Richard P Desjardin

Rebecca J Dylla-Spears

Michael Dennis Feit

A method for chemically stabilizing polishing slurries in aqueous suspension to prevent their agglomeration while maintaining their surface activity is disclosed. The method prevents the formation of irreversible particle agglomerates during drying and permits the subsequent re-suspension of dried particles with no impact on the particle size distribution. The stabilization method can be customized based on knowledge of the colloid surface charge at suspension pH conditions, addition of a charged species having like charge to the colloid at the suspension conditions, and control of the concentrations of the charged species and other ions in suspension.

Polishing slurry preventing agglomeration of charged colloids without loss of surface activity

A polishing system configured to polish a lap includes a lap configured to contact a workpiece for polishing the workpiece; and a septum configured to contact the lap. The septum has an aperture formed therein. The radius of the aperture and radius the workpiece are substantially the same. The aperture and the workpiece have centers disposed at substantially the same radial distance from a center of the lap. The aperture is disposed along a first radial direction from the center of the lap, and the workpiece is disposed along a second radial direction from the center of the lap. The first and second radial directions may be opposite directions.

Apparatus and method for deterministic control of surface figure during full aperture pad polishing

Described is a protective case for a tablet computer providing a compartment for receiving and holding the tablet computer in a watertight environment. The protective case can further include a mounting adaptor attachable to a mounting apparatus for holding the protective case in a fixed or stationary position on a boat. The protective case allows the optimal use and protection of a tablet computer with its connections in many environments, including protecting the tablet computer from water damage on boats.

Protective case for a tablet computer

Apparatus and method for deterministic control of surface figure during full aperture polishing

A method for preventing damage caused by high intensity light sources to optical components includes annealing the optical component for a predetermined period. Another method includes etching the optical component in an etchant including fluoride and bi-fluoride ions. The method also includes ultrasonically agitating the etching solution during the process followed by rinsing of the optical component in a rinse bath.

Methods for globally treating silica optics to reduce optical damage

Growing community of inventors

Tracy, CA, United States of America

William Augustus Steele