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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...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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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. |
format | Online Article Text |
id | pubmed-6412862 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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