Glass poling as a substrate surface pre-treatment for in situ metal nanoparticle formation by reduction of metal salt
Selvam, Tamil Selvi (Ruđer Bošković Institute)
Pervan, Petar (Ruđer Bošković Institute)
Sancho-Parramon, Jordi (Ruder Bošković Institute)
Spadaro, Maria Chiara (Institut Català de Nanociència i Nanotecnologia)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Janicki, Vesna (Ruđer Bošković Institute)

Data:	2022
Resum:	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.
Ajuts:	Ministerio de Economía y Competitividad SEV-2017-0706 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327
Nota:	Altres ajuts: ICN2 is funded by the CERCA Programme/Generalitat de Catalunya. M.C.S. has received funding from the post doctoral fellowship Juan de la Cierva Incorporation from MICINN (JCI-2019) and the Severo Ochoa programme..
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Matèria:	Metal nanoparticles ; Thin films ; Optical properties ; Glass poling ; Surface modification ; Ion exchange
Publicat a:	Surfaces and Interfaces, Vol. 33 (Oct. 2022) , art. 102158, ISSN 2468-0230

DOI: 10.1016/j.surfin.2022.102158

Preprint 22 p, 1.1 MB

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