Candyfluidics: The Art of Fabricating Micro-and Nano-fluidic Geometries using Surface-deposited Sugar Scaffolds

IF 5.4 2区 工程技术 Q1 BIOCHEMICAL RESEARCH METHODS
Lab on a Chip Pub Date : 2025-09-16 DOI:10.1039/d5lc00710k
Tochukwu D Anyaduba, J. Rodriguez-Manzano
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引用次数: 0

Abstract

The adoption of miniaturization technologies, such as micro and nanofluidic systems, as a strategy for democratized healthcare in developing countries was proposed decades ago. However, regions in most need of cost-effective global health technological solutions such as sub-Saharan Africa, contribute less than 1% of the global research output in the microfluidics field. This dearth of research output from the region may be attributed to economic and technical barriers to rapid prototyping with state-of-the-art tools such as 3D printing and micromilling. As a more accessible, low-cost, and low-resource alternative, we introduce candyfluidics, an innovative method for fabricating micro-and nano-fluidic structures using sugar and screenprinting, which are respectively abundant materials and technology in the region. Exemplified through the creation of flow-focusing chips, we provide detailed procedure for creating microfluidic architectures from surface-deposited candy mixture. The resulting flow-focusing chips were validated by generating water-in-oil droplets with volumes ranging from 0.2 to 1.22 nL under pressure-driven flows. Furthermore, the chips were used to demonstrate digital droplet loop-mediated isothermal amplification for the detection of dengue virus type 1 nucleic acids at femtomolar concentration (∼ 85 copies/ µL). The Candyfluidics fabrication process takes less than 30 minutes and enables the parallel production of multiple chips, offering a rapid and scalable approach to manufacturing microfluidic devices for point-of-need applications.
糖流体:利用表面沉积的糖支架制造微和纳米流体几何形状的艺术
采用小型化技术,如微和纳米流体系统,作为发展中国家民主化医疗保健的一项战略,早在几十年前就被提出。然而,最需要具有成本效益的全球卫生技术解决方案的地区,如撒哈拉以南非洲,在微流体领域贡献了不到1%的全球研究产出。该地区缺乏研究成果可能归因于经济和技术障碍,无法使用最先进的工具(如3D打印和微铣削)进行快速原型设计。作为一种更容易获得、低成本和低资源的替代方案,我们引入了candyfluics,这是一种利用糖和丝网印刷分别在该地区丰富的材料和技术制造微和纳米流体结构的创新方法。举例来说,通过创建流动聚焦芯片,我们提供了从表面沉积的糖果混合物创建微流体结构的详细程序。通过在压力驱动下生成体积在0.2 ~ 1.22 nL之间的油包水液滴,验证了该流动聚焦芯片的有效性。此外,该芯片被用于演示数字液滴环介导的等温扩增,用于检测飞摩尔浓度(~ 85拷贝/µL)的登革热病毒1型核酸。Candyfluidics的制造过程不到30分钟,可以并行生产多个芯片,为即时应用提供了一种快速、可扩展的微流体设备制造方法。
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来源期刊
Lab on a Chip
Lab on a Chip 工程技术-化学综合
CiteScore
11.10
自引率
8.20%
发文量
434
审稿时长
2.6 months
期刊介绍: Lab on a Chip is the premiere journal that publishes cutting-edge research in the field of miniaturization. By their very nature, microfluidic/nanofluidic/miniaturized systems are at the intersection of disciplines, spanning fundamental research to high-end application, which is reflected by the broad readership of the journal. Lab on a Chip publishes two types of papers on original research: full-length research papers and communications. Papers should demonstrate innovations, which can come from technical advancements or applications addressing pressing needs in globally important areas. The journal also publishes Comments, Reviews, and Perspectives.
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