悬浮粒子单层的制作与光学测量

IF 2.7 4区 材料科学 Q3 CHEMISTRY, PHYSICAL
Seonghyeon Kim, Gwang hyeon Yu, Hojin Kim
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引用次数: 0

摘要

含有微/纳米粒子的悬浮液滴蒸发后形成的粒子单层对多种应用至关重要,包括细胞打印、粒子免疫测定和电子学。然而,形成单层的传统方法在使用固体基底固定单层方面存在局限性。本文提出了一种利用通孔芯片形成悬浮在空气中的微颗粒单层的新方法。利用颗粒与微尺度固/液界面之间的强烈相互作用,开发出一种简单而稳健的方法,通过颗粒悬浮蒸发来制造悬浮单层。根据粒子浓度和悬浮体积,粒子层可分为四种类型,即爆裂型、环型、单环型和多环型。尽管需要重复溶剂再注入和蒸发过程,但颗粒单层的重组仍然得以实现。值得注意的是,悬浮颗粒单层具有优异的光学特性,在荧光测量中,其信噪比是放置在玻璃板上的相同颗粒的 1.78 倍。这种悬浮颗粒单层可应用于各种需要灵敏、可重复颗粒检测的领域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fabrication and Optical Measurement of a Suspended Particle Monolayer
The formation of a particle monolayer after the evaporation of a suspension droplet containing micro/nanoparticles is critical for multiple applications, including cell printing, particle immunoassays, and electronics. However, conventional methods for forming monolayers have limitations in terms of the use of solid substrates to fix them. In this paper, a novel method is proposed for forming a microparticle monolayer suspended in air using a through‐hole chip. Utilizing the strong interactions between particles and solid/liquid interfaces at the microscale, a simple yet robust method is developed to fabricate a suspended monolayer via particle suspension evaporation. The particle layers are classified into four types according to the particle concentration and suspension volume, namely, burst, ring, mono and ring, and multi patterns. Reorganization of the particle monolayer is achieved despite the repetitive solvent reinfusion and evaporation processes. Remarkably, the suspended particle monolayer exhibits superior optical characteristics, with a signal‐to‐noise ratio that is 1.78 times higher in fluorescence measurements than the same particles placed on a glass plate. This suspended particle monolayer can be applied in a variety of fields requiring sensitive and reproducible particle detection.
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来源期刊
Particle & Particle Systems Characterization
Particle & Particle Systems Characterization 工程技术-材料科学:表征与测试
CiteScore
5.50
自引率
0.00%
发文量
114
审稿时长
3.0 months
期刊介绍: Particle & Particle Systems Characterization is an international, peer-reviewed, interdisciplinary journal focusing on all aspects of particle research. The journal joined the Advanced Materials family of journals in 2013. Particle has an impact factor of 4.194 (2018 Journal Impact Factor, Journal Citation Reports (Clarivate Analytics, 2019)). Topics covered include the synthesis, characterization, and application of particles in a variety of systems and devices. Particle covers nanotubes, fullerenes, micelles and alloy clusters, organic and inorganic materials, polymers, quantum dots, 2D materials, proteins, and other molecular biological systems. Particle Systems include those in biomedicine, catalysis, energy-storage materials, environmental science, micro/nano-electromechanical systems, micro/nano-fluidics, molecular electronics, photonics, sensing, and others. Characterization methods include microscopy, spectroscopy, electrochemical, diffraction, magnetic, and scattering techniques.
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