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Full-Text Articles in Physical Sciences and Mathematics
Three-Dimensional Printing Fiber Reinforced Hydrogel Composites, Shannon Bakarich, Robert Gorkin Iii, Marc In Het Panhuis, Geoffrey Spinks
Three-Dimensional Printing Fiber Reinforced Hydrogel Composites, Shannon Bakarich, Robert Gorkin Iii, Marc In Het Panhuis, Geoffrey Spinks
Robert Gorkin III
An additive manufacturing process that combines digital modeling and 3D printing was used to prepare fiber reinforced hydrogels in a single-step process. The composite materials were fabricated by selectively pattering a combination of alginate/acrylamide gel precursor solution and an epoxy based UV-curable adhesive (Emax 904 Gel-SC) with an extrusion printer. UV irradiation was used to cure the two inks into a single composite material. Spatial control of fiber distribution within the digital models allowed for the fabrication of a series of materials with a spectrum of swelling behavior and mechanical properties with physical characteristics ranging from soft and wet to …
Changes In The Electronic Structure Of Ni/TioX Composites As A Function Of Reduction Temperature, Hans Conrad Zur Loye, Angelica Stacy
Changes In The Electronic Structure Of Ni/TioX Composites As A Function Of Reduction Temperature, Hans Conrad Zur Loye, Angelica Stacy
Hans Conrad zur Loye
Transition-metal catalysts are dispersed on high surface area oxide supports in order to obtain a large catalytic activity per metal atom. Many supports, such as SiO2, and A1203, are considered to be inert; that is, these supports do not alter the intrinsic activity of the metal significantly but only serve to increase the surface area of the metal and prevent sintering. For some oxide supports, however, there is a strong interaction between the metal and the support. In particular, TiO2, can affect the activity of the supported metal depending on the conditions under which the metal-titanium dioxide composite is prepared. …