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Guided Nanowires: New Building Blocks for Self-Integrated Nanosystems

Guided Nanowires: New Building Blocks for Self-Integrated Nanosystems

SPEAKER: Ernesto Joselevich from Weizmann Institute of Science, Rehovot, Israel

TOPIC: Guided Nanowires: New Building Blocks for Self-Integrated Nanosystems

WHEN: November 30, 2016, from 14:00

WHERE: Room P6, Faculty of Mechanical Engineering, Brno Unviersity of Technology, Technická 2, Brno

 

The large-scale assembly of NWs with controlled orientation on surfaces remains one challenge toward their integration into practical devices. We report the VLS growth of perfectly aligned, millimeter-long, horizontal NWs of GaN [1], ZnO [2], ZnSe [3], ZnTe [4], CdSe [5] and other materials, with controlled crystallographic orientations on different planes of sapphire [1-5], SiC [6], quartz [7], and spinel [8]. The growth directions and crystallographic orientation of the NWs are controlled by their epitaxial relationship with the substrate, as well as by a graphoepitaxial effect that guides their growth along surface steps and grooves. As a proof of concept for future applications, we demonstrate the massively parallel “self-integration” of NWs into circuits via guided growth [9].


1. Science, 333, 1003 (2011).
2. ACS Nano, 6, 6433 (2012).
3. Adv. Mater., 27, 3999 (2015).
4. J. Phys. Chem. C, 2016, 120, 18087.
5. ACS Nano, under review (2014).
6. Nano Lett., 13, 5491 (2013).
7. ACS Nano 8, 2838 (2014).
8. J. Phys. Chem C 118, 19158 (2014).
9. PNAS, 110, 15195 (2013).

 

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