M AT E R I A L S S C I E N C E
A Monolithic Hurricane-Resistant Roof Made from Low-Density Composites Inventors:
Serial Number: Filing Date:
Wool, Richard P.; Dweib, Mahmoud A.; Shenton, Harry W.; Chapas, Richard 60/512,546
Docket Number: UD04-17
October 17, 2003
This invention describes novel composites and processing to make large-scale monolithic housing structural components. A monolithic roof structure was designed, and scale-model prototypes were manufactured and tested. Plant oil-based resins and natural fibers such as, but not limited to, flax, hemp, pulp, and cellulose fibers from recycled paper and wood pulp in the form of mats were used; a vacuumassisted resin transfer molding process (VARTM) was used to manufacture composite materials of up to 50% fiber weight fraction. A Method for Producing Thin Films Inventors:
Patent Number: Issue Date:
Birkmire, Robert W.; Eser, Erten; Hanket, Gregory; McCandless, Brian E. 6,676,994
Active and Adaptive Photochromic Fibers, Textiles, and Membranes Inventors:
Rabolt, John A.; Bianco, Andrea Serial Number: 60/553,513 Filing Date: March 16, 2004 Docket Number: UD04-36 This invention encompasses the incorporation of reversible photochromic molecules (e.g., dyes) into micro- and nanofibers through the electrospinning process. In this process, a solution of a polymer (such as polymethylmethacrylate (PMMA) and the photochromic molecule is shaped into a small-diameter fiber by the application of electrostatic forces using electric fields that vary, for example, from 300 –2,000 volts per centimeter. The resulting fibers are collected on a target that can be electrically grounded or held at a voltage lower (or oppositely charged) than that of the “nozzle” where the droplet of polymer/photochromic molecule first emerges from the reservoir of solution. The fibers have diameters that range from 1–2 microns to hundreds of nanometers and have been shown to contain a uniform distribution of photochromic molecules throughout. Mats, membranes, and non-woven textiles formed from these fibers have been shown to reversibly change color depending on the wavelength of light they are exposed to. Uses range from nonwoven textiles and membranes that change color depending on the amount of wavelength of light impinging on them from optical switches and sensors.
January 13, 2004
Docket Number: UD00-09
Thin films are produced by a method wherein a material is heated in a furnace placed inside a vacuum system. An inert gas is flown over/through the heated material. The vapors of the material are entrained in the carrier gas which is then directed onto a substrate heated to a temperature below that of the furnace temperature and placed in close proximity to the exit of the furnace.
Published on Jul 24, 2009
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