Lawrence Livermore National Security, LLC

James M Frank

Christopher M Spadaccini

Eric B Duoss

William J Benett

Thomas S Wilson

Joshua D Kuntz

Neil Reginald Beer

Joshua R Deotte

Thomas R Metz

Robert S Maxwell

A three-dimensionally patterned energy absorptive material and fabrication method having multiple layers of patterned filaments extrusion-formed from a curable pre-cursor material and stacked and cured in a three-dimensionally patterned architecture so that the energy absorptive material produced thereby has an engineered bulk property associated with the three-dimensionally patterned architecture.

Method of fabricating a three-dimensionally patterned mechanical energy absorptive material

Three-dimensionally patterned energy absorptive material and method of fabrication

The rapid thermal cycling of a material is targeted. A microfluidic heat exchanger with an internal porous medium is coupled to tanks containing cold fluid and hot fluid. Fluid flows alternately from the cold tank and the hot tank into the porous medium, cooling and heating samples contained in the microfluidic heat exchanger's sample wells. A valve may be coupled to the tanks and a pump, and switching the position of the valve may switch the source and direction of fluid flowing through the porous medium. A controller may control the switching of valve positions based on the temperature of the samples and determined temperature thresholds. A sample tray for containing samples to be thermally cycled may be used in conjunction with the thermal cycling system. A surface or internal electrical heater may aid in heating the samples, or may replace the necessity for the hot tank.

Methods and compositions for rapid thermal cycling

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Lewisville, TX, United States of America

James M Frank