2017 Symposium on Functional Nanomaterials: Emerging Nanomaterials and Nanotechnology: Novel Nanomaterials and Techniques
Sponsored by: TMS Functional Materials Division, TMS: Nanomaterials Committee
Program Organizers: Jiyoung Kim, University of Texas; Stephen McDonnell, University of Virginia; Chang-Yong Nam, Brookhaven National Laboratory; V. U. Unnikrishnan, The University of Alabama; Nitin Chopra, The University of Alabama
Monday 8:30 AM
February 27, 2017
Room: Pacific 26
Location: Marriott Marquis Hotel
Session Chair: Jiyoung Kim, University of Texas at Dallas; Chang-Yong Nam, Brookhaven National Lab
8:30 AM Introductory Comments
8:40 AM Invited
Sequential Infiltration Synthesis (SIS) for Versatile Nanomaterials Fabrication: Seth Darling1; Jeffrey Elam1; 1Argonne National Laboratory
Sequential infiltration synthesis (SIS) is a new materials growth technique derived from atomic layer deposition (ALD). In SIS, vapor phase precursor molecules are alternately diffused into a polymer film separated by nitrogen purging steps. These precursors are designed to interact with species on the polymer chains such that a cycle of two half-reactions deposits a prescribed and self-limited amount of material within the polymer. Subsequent cycles deposit incrementally larger amounts of inorganic material. Considering the untold variety of molecular precursors, polymeric substrate materials and form factors, and processing conditions, the phase space and applications for SIS have only begun to be explored. Our group is studying applications in environmental remediation, water treatment, energy conversion, and composite materials synthesis, to name a few; as more research groups adopt SIS, the coming years will surely reveal even broader arenas for utilization.
9:10 AM Invited
Organometallic Infiltration into Polymers toward the Formation of Hybrid Organic-inorganic Nanomaterials: Jesse Jur1; Halil Akyildiz1; Richard Padbury1; 1North Carolina State University
The infiltration of reactive organometallic vapors into polymers is demonstrated to enable the formation of the hybrid organic-inorganic materials that offers a unique set of optical and mechanical properties. Stemming from observations of reactive infiltration during atomic layer deposition materials growth on polymers, new processes are developed to control the reaction and diffusion of the reactive gases into polymers such as films and fibers. As an example process, we examined the ability to infiltrate trimethylaluminum into polyethylene terephthalate (PET), resulting in a PET-AlOx coordination complex that exhibits increased photoluminescence and photocatalytic activity. Furthermore, the mechanical performance of PET fibers is demonstrated to improve based on the formation of the coordinated complex between polymer chains. This unique set of properties allows for new capabilities in textile structures, including opportunities for fiber-level textile electronic architectures.