Abstract
We report a new method to precisely locate inorganic nanoparticles at polymeric fiber crossing sites. Polymeric fibers are aligned by a previously reported non-electrospinning Spinneret based Tunable Engineered Parameters (STEP) polymeric fiber manufac- turing technique. Cross-hatch pattern (perpendicular) of polymeric fibers embedded with inorganic nanoparticles (e.g.: Fe(NO3)3 or Bi(NO3)3) were fabricated on top of each other and the fiber compositions re-acted during annealing process, thus, producing a desired phase (e.g.: BiFeO3) only at the crossing site. Our method of-fers an easy way to mass arrange and locate nanoparticles at designed positions on virtually all types of substrates.
Highlights
Nanomaterials have attracted much interest because of their novel properties compared to bulk materials [1,2]
Cross-hatch pattern of polymeric fibers embedded with inorganic nanoparticles (e.g. Fe(NO3)3 or Bi(NO3)3) were fabricated on top of each other and the fiber compositions reacted during annealing process, producing a desired phase (e.g. BiFeO3) only at the crossing site
Spinneret based Tunable Engineered Parameters (STEP) based resultant fibers were collected on the substrate (4 - 8 mm in width) in aligned configurations at 1000 RPM and cris-cross structures were fabricated by depositing fibers on top of previously deposited layers
Summary
Nanomaterials have attracted much interest because of their novel properties compared to bulk materials [1,2]. Spinneret based Tunable Engineered Parameters (STEP) non-electrospinning fiber manufacturing platform has recently been developed to deposit polymeric nano/microfibers [10,11]. This technique can continuously deposit uniform diameter micro/nano polymer fibers with control on fiber di-. STEP allows deposition of single and multiple-layer fibrous structures in planar, and customized three-dimensional configurations. These polymer networks can be used as inorganic nanomaterial carriers, through mixing of metal oxide ion solutions with polymer solutions before spinning. The networks are subjected to high heat, which ablates the base polymer and initiates a chemical reaction at intersection of two or more different types of fibers, resulting in the formation of a new phase only at specific locations
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