Laser Transfer of Upconversion Nanoparticles

IF 1.4 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY JETP Letters Pub Date : 2024-09-03 DOI:10.1134/S0021364024602069
V. S. Zhigarkov, V. I. Yusupov, E. V. Khaydukov
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Abstract

A method of the transfer of NaYF4:Yb3+Tm3+/NaYF4 upconversion core/shell nanoparticles with an average size of 30 nm via laser-induced forward transfer is proposed. The method provides a high spatial resolution by creating a “sandwich” structure on the donor substrate: for reliable fixation, nanoparticles are located between gold layers 50 and 20 nm thick. The transfer of upconversion nanoparticles is implemented by focusing nanosecond laser radiation into a 30-μm-diameter spot and at optimal pulse energies of 8.5–25 μJ. It has been shown that, despite large temperature, \(\Delta T > 1000{\kern 1pt} \) K, and pressure, \(\Delta P > 150{\kern 1pt} \) MPa, fluctuations upconversion nanoparticles fully retain their photoluminescent characteristics.

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上转换纳米粒子的激光转移
提出了一种通过激光诱导正向转移平均尺寸为 30 纳米的 NaYF4:Yb3+Tm3+/NaYF4 上转换核/壳纳米粒子的方法。该方法通过在供体基底上创建 "三明治 "结构来提供高空间分辨率:为了可靠地固定,纳米粒子位于 50 纳米厚和 20 纳米厚的金层之间。上转换纳米粒子的转移是通过将纳秒激光辐射聚焦到一个直径为 30 微米的光斑上,最佳脉冲能量为 8.5-25 μJ。研究表明,尽管温度(Δ T > 1000{kern1pt})K和压力(Δ P > 150{kern1pt})MPa波动较大,上转换纳米粒子仍能完全保持其光致发光特性。
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来源期刊
JETP Letters
JETP Letters 物理-物理:综合
CiteScore
2.40
自引率
30.80%
发文量
164
审稿时长
3-6 weeks
期刊介绍: All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.
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