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Simple Fabrication of Structured Magnetic Metallic Nano-Platelets for Bio-Analytical Applications

This short communication presents a simple method of preparation of thin-metal nano-platelets utilizing metal sputtering and lift-off photolithography. The method offers complete control over size, shape and properties of nano-platelets of sub-micrometer thickness. Platelets with a thickness of 50–2...

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Detalles Bibliográficos
Autores principales: Novotny, Jakub, Juskova, Petra, Kupcik, Rudolf, Bilkova, Zuzana, Foret, Frantisek
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6412862/
https://www.ncbi.nlm.nih.gov/pubmed/30717443
http://dx.doi.org/10.3390/mi10020106
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author Novotny, Jakub
Juskova, Petra
Kupcik, Rudolf
Bilkova, Zuzana
Foret, Frantisek
author_facet Novotny, Jakub
Juskova, Petra
Kupcik, Rudolf
Bilkova, Zuzana
Foret, Frantisek
author_sort Novotny, Jakub
collection PubMed
description This short communication presents a simple method of preparation of thin-metal nano-platelets utilizing metal sputtering and lift-off photolithography. The method offers complete control over size, shape and properties of nano-platelets of sub-micrometer thickness. Platelets with a thickness of 50–200 nm and with defined arbitrary shapes and sizes in the range of 15–300 μm were prepared from single or multiple metal layers by magnetron sputtering. Deposition of different metals in layers enabled fabrication of bi- or tri-metallic platelets with a magnetic core and differently composed surfaces. Highly reflective nano-platelets with a magnetic core allowed manipulation by magnetic fields, while different metallic surfaces served for functionalization by selected molecules. Submicron thin nano-platelets are extremely light (e.g., ~20 ng for a 100 μm × 100 μm × 0.1 μm gold nano-platelet) so that they can be attached to surfaces by only a few chemical bonds. At the same time their area is sufficiently large for simple optical recognition of their shape which is intended to label various characteristics depending on the specific surface functionalization of the given shape.
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spelling pubmed-64128622019-04-09 Simple Fabrication of Structured Magnetic Metallic Nano-Platelets for Bio-Analytical Applications Novotny, Jakub Juskova, Petra Kupcik, Rudolf Bilkova, Zuzana Foret, Frantisek Micromachines (Basel) Communication This short communication presents a simple method of preparation of thin-metal nano-platelets utilizing metal sputtering and lift-off photolithography. The method offers complete control over size, shape and properties of nano-platelets of sub-micrometer thickness. Platelets with a thickness of 50–200 nm and with defined arbitrary shapes and sizes in the range of 15–300 μm were prepared from single or multiple metal layers by magnetron sputtering. Deposition of different metals in layers enabled fabrication of bi- or tri-metallic platelets with a magnetic core and differently composed surfaces. Highly reflective nano-platelets with a magnetic core allowed manipulation by magnetic fields, while different metallic surfaces served for functionalization by selected molecules. Submicron thin nano-platelets are extremely light (e.g., ~20 ng for a 100 μm × 100 μm × 0.1 μm gold nano-platelet) so that they can be attached to surfaces by only a few chemical bonds. At the same time their area is sufficiently large for simple optical recognition of their shape which is intended to label various characteristics depending on the specific surface functionalization of the given shape. MDPI 2019-02-03 /pmc/articles/PMC6412862/ /pubmed/30717443 http://dx.doi.org/10.3390/mi10020106 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Communication
Novotny, Jakub
Juskova, Petra
Kupcik, Rudolf
Bilkova, Zuzana
Foret, Frantisek
Simple Fabrication of Structured Magnetic Metallic Nano-Platelets for Bio-Analytical Applications
title Simple Fabrication of Structured Magnetic Metallic Nano-Platelets for Bio-Analytical Applications
title_full Simple Fabrication of Structured Magnetic Metallic Nano-Platelets for Bio-Analytical Applications
title_fullStr Simple Fabrication of Structured Magnetic Metallic Nano-Platelets for Bio-Analytical Applications
title_full_unstemmed Simple Fabrication of Structured Magnetic Metallic Nano-Platelets for Bio-Analytical Applications
title_short Simple Fabrication of Structured Magnetic Metallic Nano-Platelets for Bio-Analytical Applications
title_sort simple fabrication of structured magnetic metallic nano-platelets for bio-analytical applications
topic Communication
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6412862/
https://www.ncbi.nlm.nih.gov/pubmed/30717443
http://dx.doi.org/10.3390/mi10020106
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