论文标题
通过光灭绝光谱法对纳米颗粒至微粒悬浮液的微流体实验室表征
Microfluidic lab-on-a-chip characterization of nano- to microparticles suspensions by light extinction spectrometry
论文作者
论文摘要
用微型系统对纳米和微粒悬浮液的分析可改善时空产量，选择性，反应停留时间和转化功能。这些能力在研究和行业的各个领域至关重要。开发的少数微流体实验室方法基本设计用于分析流体相或涉及台式粒度仪器的使用。我们报告了一种新型的微观方法，以表征胶体悬浮液的粒度分布和绝对浓度。该方法基于具有三个尺度特异性检测通道的光子实验室芯片，以记录同时的光灭绝光谱。在粒子标准标准上进行的实验范围从30 nm到0.5 $ $ m，体积浓度为1至1000ppm，清楚地证明了该方法的值和潜力。
The analysis of nano-and microparticle suspensions with micro systems affords improved space-time yields, selectivity, reaction residence times and conversions capabilities. These capabilities are of primary importance in various fields of research and industry. The few microfluidic lab-on-a-chip approaches that have been developed are essentially designed to analyse fluid phases or involve the use of benchtop particle sizing instruments. We report a novel microscale approach to characterize the particle size distribution and absolute concentration of colloidal suspensions. The method is based on a photonic lab-on-a-chip with three scale-specific detection channels to record simultaneous light extinction spectra. Experiments carried out on particle standards with sizes ranging from 30 nm to 0.5 $μ$m and volume concentrations of 1 to 1000ppm, clearly demonstrate the value and potential of the proposed method.
