Journal Articles (Electrical and Computer Engineering)
Items in this Collection
- 2Farsinezhad, Samira
- 2Mohammadpour, Arash
- 2Shankar, Karthik
- 2Wiltshire, Benjamin D.
- 1Abdolrazzaghi, Mohammad
- 1Arash Mohammadpour; Prashant R Waghmare; Sushanta K Mitra; Karthik Shankar
- 2machine learning
- 2microwave sensor
- 2nanostructured titania
- 2photoconductivity
- 1CycleGAN
- 1Mie scattering
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100-Fold Improvement in Carrier Drift Mobilities in Alkanephosphonate-Passivated Monocrystalline TiO2 Nanowire Arrays
Download2017-01-06
Mohammadpour, Arash, Wiltshire, Benjamin D., Zhang, Yun, Farsinezhad, Samira, Askar, Abdelrahman M., Kisslinger, Ryan, Ren, Yang, Kar, Piyush, Shankar, Karthik
Single crystal rutile titania nanowires grown by solvothermal synthesis are actively being researched for use as electron transporting scaffolds in perovskite solar cells, in low detection limit ultraviolet photodetectors, in photoelectrochemical water-splitting, and in chemiresistive and...
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2020-01-01
Kazemi, Nazli, Abdolrazzaghi, Mohammad, Musilek, Petr
In this study, a loss-compensated microwave (MW) planar sensor is used to characterize fluids at ~1 GHz. The environmental temperature is shown to adversely impact the recorded resonance frequency of the MW sensor, leading to data mixing. This issue is resolved using a feedforward artificial neural...
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All-solid-state formation of titania nanotube arrays and their application in photoelectrochemical water splitting
Download2018-06-07
Arezoo Hosseini; Pawan Kumar; Najia Mahdi; Yun Zhang; Karthik Shankar
The present work demonstrates for the first time the facile fabrication of TiO2 nanotube arrays (TNTAs) by a fluoride-free solid-state anodization process using LiClO4 containing solid polymeric electrolyte. The resulting nanotubes were tested for photoelectrochemical water splitting. The...
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2010-10-02
Arash Mohammadpour; Prashant R Waghmare; Sushanta K Mitra; Karthik Shankar
We report on the formation of a new class of nanostructures, namely, multipodal hollow titania nanotubes possessing two or more legs, achieved during the electrochemical anodization of titanium in diethylene glycol (DEG)-based electrolytes. The unique multipodal porous structure is expected to...
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2019-06-15
Kalra, Aarat P;, Kar, Piyush;, Preto, Jordan;, Rezania, Vahid;, Dogariu, Aristide;, Lewis, John D.;, Tuszynski, Jack A;, Shankar, Karthik;
α, β -tubulin is a cytoskeletal protein that forms cylindrical structures termed microtubules, which are crucial to the cell for a variety of roles. Microtubules are frequently modelled as one-dimensional bionanowires that act as ion transporters in the cell. In this work, we used dynamic light...
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2022-11-01
In this work, a microwave planar sensor is used for liquid material characterization. Two identical complementary split-ring resonators operating at 3 GHz are coupled to create a highly sensitive capacitive region. The moderate quality factor of the sensor ~230 is significantly improved up to...
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Halide Perovskite Solar Cells Using Monocrystalline TiO2 Nanorod Arrays as Electron Transport Layers: Impact of Morphology
Download2017-03-16
This is the first report of a 17.6 % champion efficiency solar cell architecture comprising monocrystalline TiO2 nanorods (TNRs) coupled with perovskite, and formed using facile solution processing without non-routine surface conditioning. Vertically oriented TNR ensembles are desirable as...
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2013-11-27
Mohammadpour, Arash, Farsinezhad, Samira, Wiltshire, Benjamin D., Shankar, Karthik
Monocrystalline n-TiO2 nanowires of the rutile phase (Rtl-NWs) grown by a scalable hydrothermal method constitute a functional oxide nanomaterial with potential applications in photovoltaics, photocatalysts, field emitters and electro-chemical battery anodes. Carrier transport in Rtl-NWs is of...
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2017-06-07
Yun Zhang; Samira Farsinezhad; Benjamin D. Wiltshire; Ryan Kisslinger; Piyush Kar; Karthik Shankar
Nanofabricated optically anisotropic uniaxial thin films with deep submicron feature sizes are emerging as potential platforms for low-loss all-dielectric metamaterials, and for Dyakonov surface wave-based subwavelength optical confinement and guiding at interfaces with isotropic media. In this...
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Radial Heterojunction Solar Cell Consisting of n-type Rutile Nanowire Array Infiltrated by p-type CdTe
Download2016-09-03
We report a p-n heterojunction solid-state solar cell completely fabricated by simple and tunable solution-based processing. The solar cell comprised of p-type CdTe that was electrochemically deposited onto hydrothermally synthesized vertically oriented arrays of n-type rutile TiO2 nanowire...