"Hetero-junctions of boron nitride and carbon nanotubes: Synthesis and " by Yoke Khin Yap Home Search Browse Collections My Account About Digital Commons Network™ Skip to main content Home About FAQ My Account < Previous Next > Home > Sciences and Arts > Dept. of Physics > Physics Pubs > 295 Department of Physics Publications Title Hetero-junctions of boron nitride and carbon nanotubes: Synthesis and characterization Authors Yoke Khin Yap, Michigan Technological UniversityFollow Document Type Technical Report Publication Date 3-14-2013 Abstract Hetero-junctions of boron nitride nanotubes (BNNTs) and carbon nanotubes (CNTs) are expected to have appealing new properties that are not available from pure BNNTs and CNTs. Theoretical studies indicate that BNNT/CNT junctions could be multifunctional and applicable as memory, spintronic, electronic, and photonics devices with tunable band structures. This will lead to energy and material efficient multifunctional devices that will be beneficial to the society. However, experimental realization of BNNT/CNT junctions was hindered by the absent of a common growth technique for BNNTs and CNTs. In fact, the synthesis of BNNTs was very challenging and may involve high temperatures (up to 3000 degree Celsius by laser ablation) and explosive chemicals. During the award period, we have successfully developed a simple chemical vapor deposition (CVD) technique to grow BNNTs at 1100-1200 degree Celsius without using dangerous chemicals. A series of common catalyst have then been identified for the synthesis of BNNTs and CNTs. Both of these breakthroughs have led to our preliminary success in growing two types of BNNT/CNT junctions and two additional new nanostructures: 1) branching BNNT/CNT junctions and 2) co-axial BNNT/CNT junctions, 3) quantum dots functionalized BNNTs (QDs-BNNTs), 4) BNNT/graphene junctions. We have started to understand their structural, compositional, and electronic properties. Latest results indicate that the branching BNNT/CNT junctions and QDs-BNNTs are functional as room-temperature tunneling devices. We have submitted the application of a renewal grant to continue the study of these new energy efficient materials. Finally, this project has also strengthened our collaborations with multiple Department of Energy's Nanoscale Science Research Centers (NSRCs), including the Center for Nanophase Materials Sciences (CNMS) at Oak Ridge National Laboratory, and the Center for Integrated Nanotechnologies (CINTs) at Sandia National Laboratories and Los Alamos National Laboratory. Results obtained during the current funding period have led to the publication of twelve peer reviewed articles, three review papers, two book and one encyclopedia chapters, and thirty eight conference/seminar presentation. One US provisional patent and one international patent have also been filed. Publisher's Statement © 2013 USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Publisher’s version of record: https://dx.doi.org/10.2172/1068533 Recommended Citation Yap, Y. K. (2013). Hetero-junctions of boron nitride and carbon nanotubes: Synthesis and characterization. , 1-20 http://doi.org/10.2172/1068533 Retrieved from: https://digitalcommons.mtu.edu/physics-fp/295 Version Publisher's PDF Download DOWNLOADS Since June 19, 2019 Included in Physics Commons Share COinS To view the content in your browser, please download Adobe Reader or, alternately, you may Download the file to your hard drive. NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window. LINKS The Van Pelt and Opie Library About Digital Commons @ Michigan Tech Contact Us Browse Collections Disciplines Authors Search Enter search terms: Select context to search: in this series in this repository across all repositories Advanced Search Notify me via email or RSS Author Corner Author FAQ Content Policy Links Department of Physics Website Digital Commons Home | About | FAQ | My Account | Accessibility Statement Privacy Copyright