Improved performance of Mg–Y alloy thin film switchable mirrors after coating with a superhydrophobic surface
Source abstract
Abstract
Abstract The magnesium based switchable mirrors can reversibly change their optical properties between the transparent and the reflective state as a result of hydrogenation and dehydrogenation. These films can potentially be applied as new energy-saving windows, by controlling the transmittance of solar radiation through the regulation of their reflective state. In this study, magnesium–yttrium (Mg–Y) alloy thin films were prepared using a DC magnetron sputtering method. However, the luminous transmittance in the transparent state and the switching durability of switchable mirrors are too poor to satisfy practical demands. In order to improve the films switching durability, luminous transmittance and the surface functionalization, polytetrafluoroethylene (PTFE) was coated with thermal vacuum deposition for use as the top layer of Mg–Y/Pd switchable mirrors. The PTFE layer had a porous network structure and exhibited a superhydrophobic surface with a water contact angle of approximately 152°. By characterization, PTFE thin films shows the excellent protection role against the oxidization of Mg, the switching durability of the films were improved 3 times, and also shows the antireflection role the luminous transmission of films was enhanced by 7% through the top covered with PTFE.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Silicone and Siloxane Chemistry · Aerogels and thermal insulation · Surface Modification and Superhydrophobicity
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (38)
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1. High-throughput concept for tailoring switchable mirrors10.1016/j.apsusc.2006.02.017 ↗
2. Structural, optical and electronic properties of LaMgHx switchable mirrors10.1016/S0013-4686(01)00373-5 ↗
3. Preparation and characterization of gasochromic switchable-mirror window with practical size10.1016/j.solmat.2009.03.023 ↗
4. Cycling durability of switchable mirrors10.1016/S0013-4686(01)00371-1 ↗
5. Growth and hydrogenation of epitaxial yttrium switchable mirrors on CaF210.1016/S0040-6090(01)01711-4 ↗
6. Optical switching properties of switchable mirrors based on Mg alloyed with alkaline-earth metals10.1016/j.solmat.2011.04.016 ↗
7. Ellipsometric study of optical switching processes of Mg-Ni based switchable mirrors10.1016/j.tsf.2010.12.082 ↗
8. Effects of pulse voltage and deposition time on the adhesion strength of graded metal/carbon films deposited on bendable stainless steel foils by hybrid cathodic arc – glow discharge plasma assisted chemical vapor deposition10.1016/j.apsusc.2016.01.121 ↗
9. Comparative investigation on the hydrogenation/dehydrogenation characteristics and hydrogen storage properties of Mg3Ag and Mg3Y10.1016/j.ijhydene.2014.02.135 ↗
10. The hydrogen storage behavior of Mg3La and Mg3LaNi0.110.1016/j.scriptamat.2006.08.052 ↗
11. Enhanced hydrogen storage kinetics and stability by synergistic effects of in situ formed CeH2.73and Ni in CeH2.73-MgH2-Ni Nanocomposites10.1021/jp500439n ↗
12. Structure and hydrogen storage properties of Mg3Pr and Mg3PrNi0.1 alloys10.1016/j.scriptamat.2008.12.001 ↗
13. Yttrium and lanthanum hydride films with switchable optical properties10.1038/380231a0 ↗
14. Yttrium and lanthanum hydride films with switchable optical properties10.1016/S0925-8388(96)02891-5 ↗
15. The effect of polymer coatings on switching behavior and cycling durability of Pd/Mg-Ni thin films10.1016/j.apsusc.2007.01.114 ↗
16. Optical property and cycling durability of polytetrafluoroethylene top-covered and metal buffer layer inserted Mg-Ni switchable mirror10.1016/j.solmat.2009.05.002 ↗
17. Optical switching properties of Pd-Ni thin-film top-capped switchable mirrors10.1007/s11706-015-0300-1 ↗
18. Optical switching durability of switchable mirrors based on magnesium-yttrium alloy thin films10.1016/j.solmat.2013.06.050 ↗
19. Film thickness change of switchable mirrors using Mg3Y alloy thin films due to hydrogenation and dehydrogenation10.1016/j.solmat.2013.06.041 ↗
20. Optical switches based on magnesium lanthanide alloy hydrides10.1063/1.119169 ↗
21. Contrast enhancement of rare-earth switchable mirrors through microscopic shutter effect10.1063/1.124912 ↗
22. Pd distribution of switchable mirrors based on Mg-Y alloy thin films10.1016/j.solmat.2013.10.006 ↗
23. TiO2(R)/VO2(M)/TiO2(A) multilayer film as smart window: Combination of energy-saving, antifogging and self-cleaning functions10.1016/j.nanoen.2014.09.023 ↗
24. Durable superhydrophobic PTFE films through the introduction of micro- and nanostructured pores10.1016/j.apsusc.2015.02.143 ↗
25. Highly transparent triboelectric nanogenerator for harvesting water-related energy reinforced by antireflection coating10.1038/srep09080 ↗
26. Polytetrafluoroethylene (PTFE) top-covered Mg-Ni switchable mirror thin films10.2320/matertrans.MRP2008117 ↗
27. Preparation of microstructure-controllable superhydrophobic polytetrafluoroethylene porous thin film by vacuum thermal-evaporation10.1007/s11706-016-0343-y ↗
28. Effect of deposition conditions on the response and durability of an Mg4Ni film switchable mirror10.1016/j.vacuum.2008.04.013 ↗
29. Effect of interfacial free energy on hydriding reaction of Mg-Ni thin films10.1063/1.2428877 ↗
30. Express penetration of hydrogen on Mg(1013) along the close-packed-planes10.1038/srep10776 ↗
31. The effect of La addition on optical transmittance spectra of hydrogenated Mg-La thin films10.1063/1.2952043 ↗
32. Preparation and characterization of VO2?BaSO4 composite films with enhanced optical properties in thermochromic field10.1016/j.ceramint.2014.12.073 ↗
33. Influence on optical properties and switching durability by introducing Ta intermediate layer in Mg-Y switchable mirrors10.1016/j.solmat.2014.02.031 ↗
34. Improved durability of electrochromic switchable mirror with surface coating in environment10.1016/j.vacuum.2012.08.003 ↗
35. Metal buffer layer inserted switchable mirrors10.1016/j.solmat.2007.02.023 ↗
36. Metal hydride switchable mirrors: factors influencing dynamic range and stability10.1016/j.solmat.2005.02.015 ↗
37. Superhydrophobic surfaces with photocatalytic self-cleaning properties by nanocomposite coating of TiO(2) and polytetrafluoroethylene10.1002/adma.201201037 ↗
38. Natural and biomimetic artificial surfaces for superhydrophobicity, self-cleaning, low adhesion, and drag reduction10.1016/j.pmatsci.2010.04.003 ↗