Search
Skip to Search Results- 2machine learning
- 2microwave sensor
- 2nanostructured titania
- 2photoconductivity
- 12D Materials
- 12D semiconductor nanosheets
-
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...
-
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...
-
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...
-
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...
-
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...
-
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...
-
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...
-
2018-07-22
Kar, Piyush;, Zeng, Sheng;, Zhang, Yun; Vahidzadeh, Ehsan;, Manuel, Ajay P.;, Kisslinger, Ryan;, Alam, Kazi M,;, Thakur, Ujwal K.,, Mahdi, Najia;, Kumar, Pawan;, Shankar, Karthik
The photocatalytic reduction of CO2 into light hydrocarbons using sunlight and water is a challenging reaction involving eight electron transfer steps; nevertheless, it has great potential to address the problem of rising anthropogenic carbon emissions and enable the use of fossil fuels in a...
-
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...
-
2018-08-28
Vahidzadeh, Ehsan; Kalra, Aarat P.; Shankar, Karthik
The successful interfacing of electronics with biology is the next frontier for microelectronics and nanotechnology. Melanin, a naturally occurring conjugated polymer composed of different structural subunits, may be an ideal candidate for such interfacing. In the solid-state, the large broadband...