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https://figshare.com/articles/journal_contribution/A_3-D_Nanoelectrokinetic_Model_for_Predictive_Assembly_of_Nanowire_Arrays_using_Floating_Electrode_Dielectrophoresis/10956131
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Journal article
A 3D nanoelectrokinetic model for predictive assembly of nanowire arrays using floating electrode dielectrophoresis
Nanotechnology, v 30(2), pp 025301-025301
11 Jan 2019
PMID: 30398168
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Floating electrode dielectrophoresis (FE-DEP) presents a promising avenue for scalable assembly of nanowire (NW) arrays on silicon chips and offers better control in limiting the number of deposited NWs when compared with the conventional, two-electrode DEP process. This article presents a 3D nanoelectrokinetic model, which calculates the imposed electric field and its resultant NW force/velocity maps within the region of influence of an electrode array operating in the FE-DEP configuration. This enables the calculation of NW trajectories and their eventual localization sites on the target electrodes as a function of parameters such as NW starting position, NW size, the applied electric field, suspension concentration, and deposition time. The accuracy of this model has been established through a direct quantitative comparison with the assembly of manganese dioxide NW arrays. Further analysis of the computed data reveals interesting insights into the following aspects: (a) asymmetry in NW localization at electrode sites, and (b) the workspace regions from which NWs are drawn to assemble such that their center-of-mass is located either in the inter-electrode gap region (desired) or on top of one of the assembly electrodes (undesired). This analysis is leveraged to outline a strategy, which involves a physical confinement of the NW suspension within lithographically patterned reservoirs during assembly, for single NW deposition across large arrays with high estimated assembly yields on the order of 87%.
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Details
- Title
- A 3D nanoelectrokinetic model for predictive assembly of nanowire arrays using floating electrode dielectrophoresis
- Creators
- Sachin K. Singh - University of Illinois at ChicagoNehal Aryaan - Univ Illinois, Dept Mech & Ind Engn, Chicago, IL 60607 USAMd Ruhul Amin Shikder - Univ Illinois, Dept Mech & Ind Engn, Chicago, IL 60607 USABryan W. Byles - Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USAEkaterina Pomerantseva - Drexel UniversityArunkumar Subramanian - Univ Illinois, Dept Mech & Ind Engn, Chicago, IL 60607 USA
- Publication Details
- Nanotechnology, v 30(2), pp 025301-025301
- Publisher
- Iop Publishing Ltd
- Number of pages
- 11
- Grant note
- CBET- 1604483; 1655496; 1661038 / National Science Foundation; National Science Foundation (NSF) DE-AC02-06CH11357 / US Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000449420600001
- Scopus ID
- 2-s2.0-85056419835
- Other Identifier
- 991019168241904721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied