Simple Fabrication of Structured Magnetic Metallic Nano-Platelets for Bio-Analytical Applications
ČlánekOtevřený přístuppeer-reviewedpublished versionSoubory
Datum publikování
2019
Vedoucí práce
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Vydavatel
MDPI AG (Multidisciplinary Digital Publishing Institute)
Abstrakt
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 m 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., similar to 20 ng for a 100 m x 100 m x 0.1 m 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.
Rozsah stran
"106-1"-"106-7"
ISSN
2072-666X
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Projekt
EF17_048/0007421/NANOBIO - posilování mezioborové spolupráce ve výzkumu nanomateriálů a při studiu jejich účinků na živé organismy
Zdrojový dokument
Micromachines, volume 10, issue: 2
Vydavatelská verze
https://www.mdpi.com/2072-666X/10/2/106/htm
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open access (CC BY 4.0)
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Klíčová slova
micro-particles, magnetic particles, lithography