scholarly journals Migration of ions near charged surface

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0250343
Author(s):  
Kiwoong Kim
Keyword(s):  
Zeta Potential ◽  
Absolute Magnitude ◽  
Water Filtration ◽  
Small Scale ◽  
Layer By Layer ◽  
Charged Surface ◽  
Fluorescent Intensity ◽  
Layer Deposition ◽  
Charged Membrane ◽  
External Power

Detailed understanding of ionic behavior in the region near a charged surface is important for the enhancement of water filtration mechanisms. In this study, a highly charged membrane is hypothesized to form an ion depletion zone (IDZ) without an external power supply. The formation of IDZ was experimentally investigated using membranes with varying surface zeta potential (SZP) values to confirm the hypothesis. The surface zeta potential of the charged membrane was controlled by layer-by-layer deposition method. Our results indicate that indicated that the fluorescent intensity near the charged surface becomes weaker with an increased absolute magnitude of SZP. Ionic surfactants enhance the formation of IDZ by increasing SZP magnitude, and by forming a secondary filtration layer. These findings provide information that is helpful in understanding the ionic behavior near the highly charged surface. In addition, the information provided by the findings would be helpful in fabricating a small-scale water filtration device.

Radical-triggered cross-linking for molecular layer deposition of SiAlCOH hybrid thin films

2021 ◽  
Author(s):  
Kristina Ashurbekova ◽  
Karina Ashurbekova ◽  
Iva Saric ◽  
Evgeny Modin ◽  
Mladen Petravic ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Growth ◽  
Molecular Layer ◽  
Thin Film Growth ◽  
Cross Linking ◽  
Layer By Layer ◽  
Molecular Layer Deposition ◽  
Layer Deposition ◽  
Hybrid Thin Films ◽  
Enhanced Stability

We developed a thin film growth with a radical-initiated cross-linking of vinyl groups in a layer-by-layer manner via molecular layer deposition (MLD). The cross-linked film exhibited improved properties like 12% higher density and enhanced stability compared to the non-cross-linked film.

All-nanoparticle layer-by-layer coatings for Mid-IR on-chip gas sensing

2020 ◽  
Vol 56 (91) ◽  
pp. 14283-14286
Author(s):  
Diana Al Husseini ◽  
Junchao Zhou ◽  
Daniel Willhelm ◽  
Trevor Hastings ◽  
Gregory S. Day ◽  
...  
Keyword(s):  
Optical Waveguides ◽  
Gas Sensing ◽  
Layer By Layer ◽  
Precise Control ◽  
Nanoparticle Layer ◽  
Withdrawal Speed ◽  
Layer Deposition ◽  
Nanoparticle Coatings ◽  
On Chip

Functionalization of optical waveguides with submicron all-nanoparticle coatings significantly enhanced the detection of acetone. Such coatings were enabled via precise control of the substrate withdrawal speed using the layer-by-layer deposition.

Layer-by-Layer Deposition of Polyelectrolytes. Dipping versus Spraying

Langmuir ◽  
2009 ◽  
Vol 25 (2) ◽  
pp. 1224-1232 ◽  
Author(s):  
Marta Kolasinska ◽  
Rumen Krastev ◽  
Thomas Gutberlet ◽  
Piotr Warszynski
Keyword(s):  
Layer By Layer ◽  
Layer Deposition

Mechanically Stable Antireflection and Antifogging Coatings Fabricated by the Layer-by-Layer Deposition Process and Postcalcination

Langmuir ◽  
2008 ◽  
Vol 24 (19) ◽  
pp. 10851-10857 ◽  
Author(s):  
Lianbin Zhang ◽  
Yang Li ◽  
Junqi Sun ◽  
Jiacong Shen
Keyword(s):  
Deposition Process ◽  
Layer By Layer ◽  
Layer Deposition

Layer-by-Layer Molecular Assemblies for Dye-Sensitized Photoelectrosynthesis Cells Prepared by Atomic Layer Deposition

2017 ◽  
Vol 139 (41) ◽  
pp. 14518-14525 ◽  
Author(s):  
Degao Wang ◽  
Matthew V. Sheridan ◽  
Bing Shan ◽  
Byron H. Farnum ◽  
Seth L. Marquard ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Layer By Layer ◽  
Molecular Assemblies ◽  
Dye Sensitized ◽  
Layer Deposition

Tannic acid anchored layer-by-layer covalent deposition of parasin I peptide for antifouling and antimicrobial coatings

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14809-14818 ◽  
Author(s):  
Gang Xu ◽  
Dicky Pranantyo ◽  
Bin Zhang ◽  
Liqun Xu ◽  
Koon-Gee Neoh ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Schiff Base ◽  
Tannic Acid ◽  
Michael Addition ◽  
Steel Surface ◽  
Stainless Steel Surface ◽  
Layer By Layer ◽  
Deposition Technique ◽  
Antimicrobial Coatings ◽  
Layer Deposition

Tannic acid and parasin I were deposited alternatively on stainless steel surface by Michael addition/Schiff base reaction-enabled layer-by-layer deposition technique.

Schottky Solar Cells with CuInS2 Nanocrystals as Absorber Material

2015 ◽  
Vol 229 (1-2) ◽  
Author(s):  
Holger Borchert ◽  
Dorothea Scheunemann ◽  
Katja Frevert ◽  
Florian Witt ◽  
Andreas Klein ◽  
...  
Keyword(s):  
Solar Cells ◽  
Semiconductor Nanocrystals ◽  
Absorber Layer ◽  
Limiting Factor ◽  
Device Performance ◽  
Layer By Layer ◽  
Copper Indium Disulfide ◽  
Layer Deposition ◽  
Absorber Material ◽  
Cadmium And Lead

AbstractColloidal semiconductor nanocrystals with tunable optical properties are promising materials for light harvesting in solar cells. So far, in particular cadmium and lead chalcogenide nanocrystals were intensively studied in this respect, and the device performance has made rapid progress in recent years. In contrast, less research efforts were undertaken to develop solar cells based on Cd- and Pb-free nanoparticles as absorber material. In the present work, we report on Schottky solar cells with the absorber layer made of colloidal copper indium disulfide nanocrystals. Absorber films with up to ∼ 500 nm thickness were realized by a solution-based layer-by-layer deposition technique. The device performance was systematically studied dependent on the absorber layer thickness. Decreasing photocurrent densities with increasing thickness revealed charge transport to be a limiting factor for the device performance.

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