基于尖端振动混音的3d打印微流控装置合成可调谐金纳米星

IF 2.3 4区 工程技术 Q2 INSTRUMENTS & INSTRUMENTATION Microfluidics and Nanofluidics Pub Date : 2023-10-08 DOI:10.1007/s10404-023-02687-8
Kathrine Curtin, Toktam Godary, Peng Li
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引用次数: 0

摘要

金纳米恒星是纳米医学、能量转换和催化等领域的宝贵材料。微流控合成提供了一种简单而可控的方法来生产纳米颗粒,因为它们提供了精确的流体控制,并改善了传热和传质。3d打印微流体是PDMS设备的一个很好的替代品,因为它们生产成本低廉,并且可以更容易地与主动混合策略集成。3d打印的微流体只应用于生产银和金纳米球,而不是像金纳米星这样复杂的结构。金纳米恒星的合成需要高度有效的混合,以确保均匀的成核和生长。在这项工作中,我们提出了一种3d打印的微流体装置,该装置利用有效的振动尖尖声学混合系统,通过无籽和无表面活性剂的方法产生高质量和可重复的金纳米星。振动尖尖混合装置可在7ms内混合~ 300 μm范围内的三股流体。该装置在低功率要求(2-45 mW)下的流量范围为10 μL/min至750 μL/min。通过调节输入流量,可以很容易地在650 ~ 800 nm范围内调节纳米晶的光学特性。因此,所提出的3d打印微流体装置可生产具有可调光学和物理特性的高质量金纳米星,适合广泛应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Synthesis of tunable gold nanostars via 3D-printed microfluidic device with vibrating sharp-tip acoustic mixing

Gold nanostars are valuable materials for nanomedicine, energy conversation, and catalysis. Microfluidic synthesis offers a simple and controlled means to produce nanoparticles as they offer precise fluid control and improve heat and mass transfer. 3D-printed microfluidics are a good alternative to PDMS devices because they are affordable to produce and can be more easily integrated with active mixing strategies. 3D-printed microfluidics has only been applied to the production of silver and gold nanospheres, but not complex structures like gold nanostars. Synthesis of gold nanostars requires highly effective mixing to ensure uniform nucleation and growth. In this work, we present a 3D-printed microfluidic device that utilizes an efficient vibrating sharp-tip acoustic mixing system to produce high-quality and reproducible gold nanostars via a seedless and surfactant-free method. The vibrating sharp-tip mixing device can mix three streams of fluid across ~ 300 μm within 7 ms. The device operates with flow rates ranging from 10 μL/min to 750 μL/min at low power requirements (2–45 mW). The optical properties of the resulting nanotars are easily tuned from 650 to 800 nm by modulating the input flow rate. Thus, the presented 3D-printed microfluidic device produces high-quality gold nanostars with tunable optical and physical properties suitable for extensive applications.

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来源期刊
Microfluidics and Nanofluidics
Microfluidics and Nanofluidics 工程技术-纳米科技
CiteScore
4.80
自引率
3.60%
发文量
97
审稿时长
2 months
期刊介绍: Microfluidics and Nanofluidics is an international peer-reviewed journal that aims to publish papers in all aspects of microfluidics, nanofluidics and lab-on-a-chip science and technology. The objectives of the journal are to (1) provide an overview of the current state of the research and development in microfluidics, nanofluidics and lab-on-a-chip devices, (2) improve the fundamental understanding of microfluidic and nanofluidic phenomena, and (3) discuss applications of microfluidics, nanofluidics and lab-on-a-chip devices. Topics covered in this journal include: 1.000 Fundamental principles of micro- and nanoscale phenomena like, flow, mass transport and reactions 3.000 Theoretical models and numerical simulation with experimental and/or analytical proof 4.000 Novel measurement & characterization technologies 5.000 Devices (actuators and sensors) 6.000 New unit-operations for dedicated microfluidic platforms 7.000 Lab-on-a-Chip applications 8.000 Microfabrication technologies and materials Please note, Microfluidics and Nanofluidics does not publish manuscripts studying pure microscale heat transfer since there are many journals that cover this field of research (Journal of Heat Transfer, Journal of Heat and Mass Transfer, Journal of Heat and Fluid Flow, etc.).
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