An imprinting of upconversion nanoparticles by using scanning probe microscopy methods

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Abstract

We studied the possibility of using upconversion fluoride nanoparticles NaYF4 doped with Yb3+ and Er3+ ions as ordered non-invasive hidden labels. The synthesized upconversion fluoride nanoparticles were first deposited from suspension onto the surface of the substrate with labels used as large-scale markers, and then, using a scanning probe microscope, small conglomerates of upconversion nanoparticles were transferred over macroscopically significant distances and controlled deposited onto a clean surface, thereby imprinting nanoobjects. The process of transfer and deposition was monitored using a conventional optical microscope. Luminescent signals from orderly located labels were recorded in an optical confocal microscope.

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About the authors

А. P. Chuklanov

Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”

Author for correspondence.
Email: achuklanov@kfti.knc.ru

Zavoisky Physical-Technical Institute

Russian Federation, Kazan

A. S. Morozova

Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”

Email: achuklanov@kfti.knc.ru

Zavoisky Physical-Technical Institute

Russian Federation, Kazan

Ye. O. Mityushkin

Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”

Email: achuklanov@kfti.knc.ru

Zavoisky Physical-Technical Institute

Russian Federation, Kazan

L. А. Nurtdinova

Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”

Email: achuklanov@kfti.knc.ru

Zavoisky Physical-Technical Institute

Russian Federation, Kazan

A. V. Leontyev

Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”

Email: achuklanov@kfti.knc.ru

Zavoisky Physical-Technical Institute

Russian Federation, Kazan

N. G. Nikiforov

Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”

Email: achuklanov@kfti.knc.ru

Zavoisky Physical-Technical Institute

Russian Federation, Kazan

N. I. Nurgagizov

Federal Research Center “Kazan Scientific Center of the Russian Academy of Sciences”

Email: achuklanov@kfti.knc.ru

Zavoisky Physical-Technical Institute

Russian Federation, Kazan

References

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  5. Чукланов А.П., Морозова А.С., Нургазизов Н.И. и др. // ЖТФ. 2023. Т. 93. № 7. С. 1019, Chuklanov A.P., Morozova A.S., Nurgazizov N.I. et al. // Techn. Phys. 2023. V. 68. No. 7. P. 950.
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2. Fig. 1. Optical image of the AFM beam with a probe after the scanning process in the contact mode. The beam with the probe is covered with nanoparticle agglomerates. View from the bottom up, illumination from the top. The scale bar is 45 μm.

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3. Fig. 2. A sequence of images obtained using the optical microscope included in the Solver Bio SPM, illustrating the stages of creating a label in the form of an agglomerate of ANPs located at the corners of a square. Region without particles (a), region with one agglomerate (b), region with two agglomerates (c), region with three agglomerates (d), the AFM probe is in the position for deposition of the fourth agglomerate (d), four agglomerates with particles are located at the corners of the square (e). View from the bottom up. Illumination from the top and from the side. The scale bar is 45 μm.

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4. Fig. 3. Image obtained using a confocal microscope: laser radiation reflected from the surface (a), upconversion luminescence of NaYF4: Yb, Er nanoparticles (b), scale bar length 25 μm. Upconversion luminescence spectra upon irradiation of NaYF4: Yb, Er nanoparticles with a laser at a wavelength of 980 nm (c).

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