Microfluidic-integrated graphene optical sensors for real-time and ultra-low flow velocity detection
文献类型：期刊论文
| 作者 | T. Wu; J. Shen; Z. Li; F. Xing; W. Xin; Z. Wang; G. Liu; X. Han; Z. Man and S. Fu |
| 刊名 | Applied Surface Science
 |
| 出版日期 | 2021 |
| 卷号 | 539 |
| ISSN号 | 1694332 |
| DOI | 10.1016/j.apsusc.2020.148232 |
| 英文摘要 | As microfluidic technology continues to mature, many techniques are being developed to monitor the flow of microfluidics. However, achieving breakthroughs in the real-time detection of ultra-low flow velocity and non-conductive liquid in microfluidic environments remains a major challenge. Here, microfluidic-integrated graphene optical sensorswith a sensitivity of 4.65 105 mVsm1 and a detection limit of 4.9 105 ms1 were designed to address these challenges. We reported our efforts to quantify the impact of ultra-low flow velocity driven by ultra-small levels of pressure. A flow velocity of 3.7 104 ms1 was detected with a signal-to-noise ratio of approximately 7.5. A high-quality graphene layer that was directly grown on glass by an improved low-pressure chemical vapor deposition method and provided several advantages, including controllable thickness, high uniformity, high stability, and corrosion resistance. Graphene also has an excellent polarization-dependent effect. It was extremely sensitive to pressure-driven microfluidic flow because of the interaction between polarization light and the quartz glass/graphene film/medium multilayer-coupling structure, which fed back the signals in real-time. This novel sensor represents a breakthrough in the ultra-low level detection of the flow velocity of non-conductive microfluidics. We expect this sensor to have a broad array of applications in the field of microfluid velocity measurement. 2020 Elsevier B.V. |
| URL标识 | 查看原文 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/65416]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | T. Wu,J. Shen,Z. Li,et al. Microfluidic-integrated graphene optical sensors for real-time and ultra-low flow velocity detection[J]. Applied Surface Science,2021,539. |
| APA | T. Wu.,J. Shen.,Z. Li.,F. Xing.,W. Xin.,...&Z. Man and S. Fu.(2021).Microfluidic-integrated graphene optical sensors for real-time and ultra-low flow velocity detection.Applied Surface Science,539. |
| MLA | T. Wu,et al."Microfluidic-integrated graphene optical sensors for real-time and ultra-low flow velocity detection".Applied Surface Science 539(2021). |
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