Antireflective Coating Material For Highly Reflective Surfaces With Topography

γ-Poly-glutamic acid (γ-PGA) is a naturally occurring homo-polyamide produced by various strains of Bacillus. As a biopolymer substance, γ-PGA possesses a few predominant features containing good water solubility, biocompatibility, degradability and non-toxicity. Based on this, γ-PGA can be used in pharmaceutical, such as drug carrier/deliverer, vaccine adjuvant, and coating material for microencapsulation, etc. Moreover, it has also been applied in a broad range of industrial fields including food, medicine, bioremediation, cosmetics, and agriculture. Especially, γ-PGA is an extremely promising food ingredient. In this mini-review, our aim is to review the function and application progress of γ-PGA in the food industry: e.g., improving taste and flavor, enhancing physical property, and promoting health.

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Design and Optimization of the Antireflective Coating Properties of Silicon Solar Cells by Using Response Surface Methodology

Coatings ◽

10.3390/coatings11060721 ◽

2021 ◽

Vol 11 (6) ◽

pp. 721

Author(s):

Yahia F. Makableh ◽

Hani Alzubi ◽

Ghassan Tashtoush

Keyword(s):

Response Surface Methodology ◽

Solar Cells ◽

Response Surface ◽

Zno Nanoparticles ◽

Visible Spectral Range ◽

Silicon Solar Cells ◽

Antireflective Coating ◽

Antireflective Coatings ◽

Zinc Oxide Nanostructures ◽

Design And Optimization

The design and optimization of a nanostructured antireflective coatings for Si solar cells were performed by using response surface methodology (RSM). RSM was employed to investigate the effect on the overall optical performance of silicon solar cells coated with three different nanoparticle materials of titanium dioxide, aluminum oxide, and zinc oxide nanostructures. Central composite design was used for the optimization of the reflectance process and to study the main effects and interactions between the three process variables: nanomaterial type, the radius of nanoparticles, and wavelength of visible light. In this theoretical study, COMSOL Multiphysics was utilized to design the structures by using the wave optics module. The optical properties of the solar cell’s substrate and the three different nanomaterial types were studied. The results indicated that ZnO nanoparticles were the best antireflective coating candidate for Si, as the ZnO nanoparticles produced the lowest reflection values among the three nanomaterial types. The study reveals that the optimum conditions to reach minimum surface reflections for silicon solar cell were established by using ZnO nanoparticles with a radius of ~38 nm. On average, the reflectance reached ~5.5% along the visible spectral range, and approximately zero reflectance in the 550–600 nm range.

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An alternative coating material for gas turbine blade for aerospace applications

Journal of Physics Conference Series ◽

10.1088/1742-6596/1706/1/012183 ◽

2020 ◽

Vol 1706 ◽

pp. 012183

Author(s):

Yajnesh M Poojari ◽

Koustubh S Annigeri ◽

Nilesh Bandekar ◽

Kiran U Annigeri ◽

Vinayak badiger ◽

...

Keyword(s):

Gas Turbine ◽

Turbine Blade ◽

Coating Material ◽

Gas Turbine Blade ◽

Aerospace Applications

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Effect of the coating material compositions on the life of gas turbine hot section components

10.1063/5.0038314 ◽

2021 ◽

Author(s):

U. Harish ◽

M. Mruthunjaya ◽

K. Naresha ◽

G. Madhu

Keyword(s):

Gas Turbine ◽

Coating Material

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(Hydroxy)apatite on cement: insights into a new surface treatment

Materials Advances ◽

10.1039/d1ma00320h ◽

2021 ◽

Author(s):

Ronald Joseph Turner ◽

Pieter Bots ◽

Alan Richardson ◽

Paul Bingham ◽

Alex Scrimshire ◽

...

Keyword(s):

Low Temperature ◽

Surface Treatment ◽

Nuclear Waste ◽

Environmental Remediation ◽

Coating Material ◽

Hydroxy Apatite ◽

Nuclear Waste Storage ◽

Waste Storage ◽

Architectural Preservation

(Hydroxy)apatite [Ca10(PO4)6(OH)2], has emerging potential as a cement coating material, with applications in environmental remediation, nuclear waste storage and architectural preservation. In these low temperature environments and when precipitating from...

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