Glass poling as a substrate surface pre-treatment for in situ metal nanoparticle formation by reduction of metal salt

Selvam, TamilSelvi; Pervan, Petar; Sancho-Parramon, Jordi; Spadaro, Maria Chiara; Arbiol, Jordi; Janicki, Vesna (2022) Glass poling as a substrate surface pre-treatment for in situ metal nanoparticle formation by reduction of metal salt. Surfaces and Interfaces, 33 . p. 102158. ISSN 2468-0230

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Abstract

Metal nanoparticles are used in optical coatings and sensors due to their absorption in optical part of spectrum and its sensitivity to the environment induced by localized surface plasmon resonance. Glass is the most common substrate used for optical coatings. However, its surface does not have optimal properties for coating with metal nanoparticles grown in situ by reduction of metal salt. Glass surface optimization methods may involve environmentally hostile chemicals or processes that have time limited or atmosphere sensitive effects. In this study it is demonstrated and discussed effectiveness, mechanisms and advantages of glass poling as pre-treatment method for improving glass surface properties for maximization of coatings plasmonic performance. Pre-treatment of glass surfaces by poling is highly efficient for the purpose. Glass poling quenches ion exchange between metal ions from the solution and alkali ions from glass, favouring nanoparticles formation. Surface prepared in such way is not affected by ageing in normal atmosphere and is effective even after coating with ultrathin dielectric or Cr layers.

Item Type:	Article
Uncontrolled Keywords:	metal nanoparticles; thin films; optical properties; glass poling; surface modification; ion exchange
Subjects:	NATURAL SCIENCES > Physics > Condensed Matter Physics
Divisions:	Division of Materials Physics Division of Physical Chemistry
Projects:	Project title Project leader Project code Project type Razlaganje električnim poljem u tankim optičkim slojevima - nanostrukturiranje, dopiranje, porozni slojevi-REPTOSNANODOPS Vesna Janicki IP-2016-06-2168 HRZZ
Depositing User:	Jordi Sancho Parramon
Date Deposited:	05 Feb 2024 10:12
URI:	http://fulir.irb.hr/id/eprint/8345
DOI:	10.1016/j.surfin.2022.102158

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