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You searched on: Author: babak nikoobakht Sorted by: date

Displaying records 1 to 10 of 22 records.
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1. Surface-directed Nanoepitaxy on a Surface with an Irregular Lattice
Published: 1/8/2016
Authors: Elias James Garratt, Babak Nikoobakht
Abstract: Understanding and developing metrics on how nanocrystals respond to local external surface stimuli at their interfaces during growth or operation is a key step in advancing scalable and deterministic approaches for fabricating functional one- and two ...

2. Vapor-Liquid-Solid Etch of Semiconductor Surface Channels by Running Gold Nanodroplets
Published: 11/24/2015
Authors: Babak Nikoobakht, Andrew A Herzing, Shinichiro Muramoto, Jerry Tersoff
Abstract: We show that Au nanoparticles spontaneously move across the (001) surface of InP, InAs, and GaP when heated in the presence of water vapor. As they move, the particles etch crystallographically aligned grooves into the surface. We show that this pr ...

3. Scalable Synthesis and Device Integration of Self-Registered One-Dimensional Zinc Oxide Nanostructures and Related Materials
Published: 9/28/2013
Authors: Babak Nikoobakht, Xudong Wang, Andrew A Herzing, Jian Shib
Abstract: On integrating one-dimensional (1D) nanocrystals (nanowires) to useful devices, in this review article, we provide a background on growth processes and how they impact device integration strategies. Successful integration of nanowires to devices and ...

4. Where is the required lattice match in horizontal growth of nanowires?
Published: 3/12/2013
Author: Babak Nikoobakht
Abstract: The surface-directed growth of nanowires (NWs) has been demonstrated for a number of semiconductors and is anticipated to be applicable to a wider group of materials. However, the epitaxial relationship between NWs and their underlying surface has no ...

5. Two Dimensional (2D) Nanomembranes: Can They Outperform Lower Dimension Nanocrystals?
Published: 3/13/2012
Authors: Babak Nikoobakht, Xiuling Li
Abstract: Inorganic nanomembranes, analogues to graphene, are expected to impact a wide range of device concepts including thin film- or flexible platforms. Size dependent properties and high surface area, two key characteristics of zero- (0D) and one-dimensi ...

6. Surface-directed Growth of Nanowires: A Scalable Platform for Nanodevice Fabrication
Published: 7/11/2011
Author: Babak Nikoobakht
Abstract: Optical lithography continues to be the popular technique for further miniaturization of electronic circuitry and its components. However, as further device miniaturization continues, complexity of pattern generation and cost increase; therefore th ...

7. One-dimensional p-n heterojunctions of zinc oxide on gallium nitride: A structural characterization
Published: 7/1/2011
Authors: Babak Nikoobakht, John E Bonevich, Andrew A Herzing
Abstract: Recently we showed lateral growth of ZnO nanowires and nanowalls on single crystal GaN and formation of bi- and tri-directional assembly of nanowires and nanowalls using a surface-directed vapor-liquid-solid process (SVLS). Taking advantage of this ...

8. Growth of Planar Arrays of One-dimensional p-n Heterojunctions
Published: 9/15/2010
Authors: Babak Nikoobakht, Andrew A Herzing
Abstract: We report a general method for /in-situ/ formation and hierarchical assembly of nanowire-based semiconductor heterojunctions that are electrically addressable. Heterojunctions are formed by lateral epitaxial growth of nanowires/nanowalls on a semicon ...

9. Strained Zinc Oxide Nanowires on Sapphire: Transition From Horizontal to Standing Growth
Published: 6/25/2009
Authors: Babak Nikoobakht, Susie Eustis
Abstract: Our results show that growth of horizontal ZnO nanowires on sapphire a-plane takes place epitaxially with misfit dislocations much fewer than theoretically expected. In highly lattice mismatched systems, misfit dislocation formation is the common ro ...

10. Patterns of Ensemble Variation of the Optical Properties of ZnO Nanowires Grown with Copper and Gold Catalysts
Published: 3/19/2009
Authors: Susie Eustis, Lawrence H Robins, Babak Nikoobakht
Abstract: Analysis of the structural and optical properties of gold- and copper-catalyzed zinc oxide (ZnO) nanowires (NWs), grown in a high temperature tube furnace on a sapphire substrate shows non-uniformity over the substrate. The changes in the optical pr ...

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