InterNano Nanomanufacturing Repository
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Electrochemical Deposition of ZnO Hierarchical Nanostructures from Hydrogel Coated Electrodes
No full textThe electrochemical deposition of ZnO hierarchical nanostructures directly from PHEMA hydrogel coated electrodes has been successfully demonstrated. A variety of hierarchical ZnO nanostructures, including porous nanoflakes, nanosheets and nanopillar arrays were fabricated directly from the PHEMA hydrogel coated electrodes. Hybrid ZnO-hydrogel composite films were formed with low zinc concentration and short electrodeposition time. A dual-layer structure consisting of a ZnO/polymer and pure ZnO layer was obtained with zinc concentration above 0.01 M. SEM observations and XPS depth profiling were used to investigate ZnO nanostructure formation in the early electrodeposition process. A growth mechanism to understand the formation of ZnO/hydrogel hybrid hierarchical nanostructures was developed. The I-V characteristics of the ZnO-hydrogel composite films in dark and under ultraviolet (UV) illumination demonstrate potential applications in UV photodetection. (C) 2013 The Electrochemical Society. DOI: 10.1149/2.064304jes All rights reserved
Development of a capillary flow microfluidic Escherichia coli biosensor with on-chip reagent delivery using water-soluble nanofibers
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Relating Chemical Structure to Device Performance via Morphology Control in Diketopyrrolopyrrole-Based Low Band Gap Polymers
No full textLatest Manufacturing Institutes Compliment Nanoinformatics and Nanomanufacturing Initiatives
No full textWith the recent announcement by the administration on the technology focus and details for the next installment of Advanced Manufacturing Institutes (AMIs) as part of the National Network for Manufacturing Innovation (NNMI), an assessment of key synergisms of U.S. initiatives in nanoinformatics and the nanomanufacturing enterprise is timely. The two DOD-led institutes will include technology focus areas in Digital Manufacturing and Design Innovation (DMDI) and Lightweight and Modern Metals Manufacturing Innovation (LM3I). Both of these conceptual institutes will incorporate overlapping themes including materials by design, supply-chain networking, and manufacturing on demand concepts in order to reduce the cost and time to market for advanced products and components for both military and commercial applications. The benefit will include enhanced U.S. manufacturing competitiveness and efficiency. The challenge is providing the vision, infrastructure, and platform to implement the necessary digital thread providing an impact across industry sectors on a national and eventually global scale. Materials and processes for flexible devices and electronics, RTI's Nanomaterial Registry, and ultra-fast water transport are discussed
Development of Antimicrobial Stainless Steel via Surface Modification with N-halamines: Characterization of Surface Shemistry and N-halamine Shlorination
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Template-Free Vibrational Indentation Patterning (VIP) of Micro/Nanometer-Scale Grating Structures with Real-Time Pitch and Angle Tunability
No full textA template-free, high-throughput patterning technique named vibrational indentation-driven patterning (VIP), which achieves continuous, period-tunable fabrication of micro/nanometer-scale grating structures, is reported. In VIP, a tilted edge of a hard material vertically vibrating at high frequency makes periodic indentations onto a moving substrate of any material softer than the tool, thereby continuously creating grating patterns at high speed. By modulating the tool vibration frequency, substrate feeding rate, and the tool tilting angle, the period-variable chirped gratings and angle-tunable blazed gratings can be easily achieved; they can be utilized in various optoelectronics and photonics applications. As an example, an infrared polarizer directly fabricated from the VIP-created blazed grating is demonstrated