Designing Asymmetrically Modified Nanochannel Sensors Using Virtual EIS

10.26434/chemrxiv.14714895 ◽

2021 ◽

Author(s):

Sivaranjani Devarakonda ◽

Sungu Kim ◽

Baskar Ganapathysubramanian ◽

Pranav Shrotriya

Keyword(s):

Ionic Transport ◽

Anodic Alumina ◽

Anodic Alumina Membrane ◽

Alumina Membrane ◽

Nanoporous Anodic Alumina ◽

Charge Modulation ◽

Experimental Strategies

We devised an approach to capture the physics of localized charge modulation and its effect on ionic transport across asymmetrically charged nanopores by combining computational and experimental strategies. A virtual EIS tool has been developed to compute the impedance across nanopores. Nanoporous anodic alumina membrane (NAA) is employed for thrombin detection with thrombin binding aptamer to experimentally validate the computed impedance results. Using the approach proposed in this work, a novel biosensor is designed and a way to enhance the sensitivity of the sensor is established.

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Morphological Studies of ZnO Nanostructures Deposited on Nanoporous Anodic Alumina Membrane by Rapid Dip Coating Technique

IOSR Journal of Applied Chemistry ◽

10.9790/5736-7910408 ◽

2014 ◽

Vol 7 (9) ◽

pp. 04-08

Author(s):

Mohamed Shaban ◽

◽

Amin Hussein ◽

Ahmed Abdel khalek ◽

Hany S. Hamdy

Keyword(s):

Dip Coating ◽

Anodic Alumina ◽

Anodic Alumina Membrane ◽

Zno Nanostructures ◽

Alumina Membrane ◽

Coating Technique ◽

Nanoporous Anodic Alumina ◽

Morphological Studies ◽

Dip Coating Technique

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Fabrication and characterization of nanoporous anodic alumina membrane using commercial pure aluminium to remove coliform bacteria from wastewater

Processing and Application of Ceramics ◽

10.2298/pac1903235a ◽

2019 ◽

Vol 13 (3) ◽

pp. 235-243 ◽

Cited By ~ 1

Author(s):

Hamed Aghili ◽

Babak Hashemi ◽

Mohammad Bahrololoom ◽

Seyed Jahromi

Keyword(s):

Potential Temperature ◽

Electrolyte Solutions ◽

Processing Parameters ◽

Sulphuric Acid Solution ◽

Anodic Alumina ◽

Coliform Bacteria ◽

Pure Aluminium ◽

Anodic Alumina Membrane ◽

Alumina Membrane ◽

Nanoporous Anodic Alumina

Nanoporous anodic alumina (NAA) membranes were produced by anodizing process using commercially pure aluminium (1050 alloy). The optimization of processing parameters, such as applied potential, temperature and time in two different electrolyte solutions, has been performed to produce the ordered alumina nano-membrane. Nanoporous anodic alumina membrane (NAAM) was obtained by removing the aluminium substrate and opening the bottom of the pores. The microstructure of samples was studied and analysed by field emission scanning electron microscopy (FESEM). Image processing of FESEM pictures was performed with MATLAB. The results showed that at the optimum conditions of anodizing, the percentage of porosity and ordering of pores in the samples were similar to the productions of the high purity aluminium base. NAA layers that formed in sulphuric acid solution in comparison with oxalic acid had lower pore diameter (20 nm), lower inter-pore distance (45-50 nm) and higher hardness (325HV). The optimized membranes which have been produced with the same thickness were used for separation of Coliform bacteria from the secondary clarified wastewater. The results showed that these membranes can be used as selective filters because of their desirable physical properties.

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Alcohol sensor based on gold-coated nanoporous anodic alumina membrane

Pramana ◽

10.1007/s12043-019-1793-4 ◽

2019 ◽

Vol 93 (2) ◽

Cited By ~ 1

Author(s):

Saleem Shaik ◽

Anjani Kumar Tiwari ◽

S Anantha Ramakrishna

Keyword(s):

Anodic Alumina ◽

Anodic Alumina Membrane ◽

Alumina Membrane ◽

Nanoporous Anodic Alumina ◽

Alcohol Sensor

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Enhanced Lasing in Metal-Insulator-Metal Waveguide Slab based on Gold Coated Nanoporous Anodic Alumina Membrane

2019 Workshop on Recent Advances in Photonics (WRAP) ◽

10.1109/wrap47485.2019.9013949 ◽

2019 ◽

Author(s):

Saleem Shaik ◽

Anjani Kumar Tiwari ◽

S. Anantha Ramakrishna

Keyword(s):

Anodic Alumina ◽

Anodic Alumina Membrane ◽

Alumina Membrane ◽

Metal Insulator ◽

Nanoporous Anodic Alumina ◽

Metal Waveguide ◽

Metal Insulator Metal

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Effect of Pore Thickness and the State of Polarization on the Optical Properties of Hexagonal Nanoarray of Au/Nanoporous Anodic Alumina Membrane

Journal of Nanomaterials ◽

10.1155/2015/347486 ◽

2015 ◽

Vol 2015 ◽

pp. 1-9 ◽

Cited By ~ 2

Author(s):

Mohamed Shaban

Keyword(s):

Optical Properties ◽

Building Blocks ◽

Anodic Alumina ◽

Radiative Transfer Model ◽

Transfer Model ◽

Anodic Alumina Membrane ◽

Alumina Membrane ◽

Nanoporous Anodic Alumina ◽

Anodization Time ◽

State Of Polarization

Hexagonal nanoarrays of Au particles were deposited on nanoporous anodic alumina membrane (NAAM) utilizing r.f. magnetron sputtering. The thickness of the NAAMs is adjusted by changing the second anodization time from 5 min to 20 min. The surface morphology, composition, and optical properties are characterized by using SEM, EDX, and spectrophotometer, respectively. The effects of the NAAM thickness and state of polarization on the morphological changes and on the optical properties of the fabricated nanoarrays were addressed. According to the measured optical spectra, the rate of decrease of NAAMs refractive index was found to be 3.825 × 10−4 nm−1. Using the modified Kubelka-Munk radiative transfer model, the energy gap of NAAMs was calculated from diffused reflectance and was decreased from 1.682 to 1.376 as the anodization time increased from 5 to 20 min. Also, the saturation of interference fringes is substantially enhanced, and field enhancement can be achieved due to the excitation and constructive interference of surface plasmon waves by coating NAAMs with the hexagonal nanoarrays of Au. Based on the advantages of the fabrication approach and the enhanced and controlled properties, this new generation of samples can be used as promising building blocks for nanophotonic and nanoelectronics devices.

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