{"title":"Modified nanosphere lithography: application to the fabrication of ordered arrays of gold nanopyramids","authors":"Cecilia Salinas-Fuentes, Angélica Hernández-Zanabria, Juan-Carlos Cheang-Wong, Yuriy Kudriavtsev","doi":"10.1007/s10854-024-13289-7","DOIUrl":null,"url":null,"abstract":"<p>In this work a modified approach to improve the capabilities of nanosphere lithography was performed to obtain ordered arrays of gold nanopyramids that can be used as Surface-Enhanced Raman Scattering (SERS) substrates. Specifically, shadow sphere lithography in combination with nanosphere lithography was used to fabricate metallic nanostructures of different sizes starting from the same mask of silica microspheres. An extensive study of the obtained samples with scanning electron microscopy, atomic force microscopy and Raman characterizations confirms that indeed this modification of the standard nanosphere lithography is an excellent candidate to produce ordered arrays of Au nanopyramids with good control on their geometric properties. Rhodamine 6G dye was used as a probe molecule to test our SERS substrates. These features can be used in turn to optimize the SERS substrates for several potential applications. Remarkably, it is shown that by this simple technique one can achieve enhancement factors and detection capabilities of dyes that are comparable with those obtained by using more sophisticated techniques as proposed recently in the literature.</p>","PeriodicalId":646,"journal":{"name":"Journal of Materials Science: Materials in Electronics","volume":null,"pages":null},"PeriodicalIF":2.8000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science: Materials in Electronics","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s10854-024-13289-7","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
In this work a modified approach to improve the capabilities of nanosphere lithography was performed to obtain ordered arrays of gold nanopyramids that can be used as Surface-Enhanced Raman Scattering (SERS) substrates. Specifically, shadow sphere lithography in combination with nanosphere lithography was used to fabricate metallic nanostructures of different sizes starting from the same mask of silica microspheres. An extensive study of the obtained samples with scanning electron microscopy, atomic force microscopy and Raman characterizations confirms that indeed this modification of the standard nanosphere lithography is an excellent candidate to produce ordered arrays of Au nanopyramids with good control on their geometric properties. Rhodamine 6G dye was used as a probe molecule to test our SERS substrates. These features can be used in turn to optimize the SERS substrates for several potential applications. Remarkably, it is shown that by this simple technique one can achieve enhancement factors and detection capabilities of dyes that are comparable with those obtained by using more sophisticated techniques as proposed recently in the literature.
期刊介绍:
The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.