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Zhang Y, Escobar A, Guo T, Xu CQ. Label-Free Cyanobacteria Quantification Using a Microflow Cytometry Platform for Early Warning Detection and Characterization of Hazardous Cyanobacteria Blooms. MICROMACHINES 2023; 14:mi14050965. [PMID: 37241590 DOI: 10.3390/mi14050965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/21/2023] [Accepted: 04/25/2023] [Indexed: 05/28/2023]
Abstract
The eutrophication of aquatic ecosystems caused by rapid human urbanization has led to an increased production of potentially hazardous bacterial populations, known as blooms. One of the most notorious forms of these aquatic blooms are cyanobacteria, which in sufficiently large quantities can pose a hazard to human health through ingestion or prolonged exposure. Currently, one of the greatest difficulties in regulating and monitoring these potential hazards is the early detection of cyanobacterial blooms, in real time. Therefore, this paper presents an integrated microflow cytometry platform for label-free phycocyanin fluorescence detection, which can be used for the rapid quantification of low-level cyanobacteria and provide early warning alerts for potential harmful cyanobacterial blooms. An automated cyanobacterial concentration and recovery system (ACCRS) was developed and optimized to reduce the assay volume, from 1000 mL to 1 mL, to act as a pre-concentrator and subsequently enhance the detection limit. The microflow cytometry platform utilizes an on-chip laser-facilitated detection to measure the in vivo fluorescence emitted from each individual cyanobacterial cell, as opposed to measuring overall fluorescence of the whole sample, potentially decreasing the detection limit. By applying transit time and amplitude thresholds, the proposed cyanobacteria detection method was verified by the traditional cell counting technique using a hemocytometer with an R2 value of 0.993. It was shown that the limit of quantification of this microflow cytometry platform can be as low as 5 cells/mL for Microcystis aeruginosa, 400-fold lower than the Alert Level 1 (2000 cells/mL) set by the World Health Organization (WHO). Furthermore, the decreased detection limit may facilitate the future characterization of cyanobacterial bloom formation to better provide authorities with ample time to take the appropriate actions to mitigate human risk from these potentially hazardous blooms.
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Affiliation(s)
- Yushan Zhang
- Department of Biomedical Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Andres Escobar
- Department of Biomedical Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada
| | - Tianyi Guo
- Forsee Instruments Ltd., Hamilton, ON L8P 0A1, Canada
| | - Chang-Qing Xu
- Department of Biomedical Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada
- Department of Engineering Physics, McMaster University, Hamilton, ON L8S 4L8, Canada
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2
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Qu J, Zhang Y, Chenier M, Xu CQ, Chen L, Wan Y. A Transit Time-Resolved Microflow Cytometry-Based Agglutination Immunoassay for On-Site C-Reactive Protein Detection. MICROMACHINES 2021; 12:mi12020109. [PMID: 33499089 PMCID: PMC7911971 DOI: 10.3390/mi12020109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/13/2021] [Accepted: 01/20/2021] [Indexed: 12/22/2022]
Abstract
An accurate and rapid microflow cytometry-based agglutination immunoassay (MCIA) suitable for on-site antibody or antigen detection was proposed. In this study, quantitative C-reactive protein (CRP) detection was chosen as a model assay in order to demonstrate the detection principle. The average transit time was employed to estimate the extent of the agglutination reaction and improve the detection accuracy as compared to the intensity-dependent methods. The detection time was less than 8 min. and only a 20 µL serum sample was needed for each test. The results showed a linear relationship between the average transit time of aggregates and CRP concentrations ranging from 0 to 1 µg/mL. The R2 of this relationship was 0.99. The detection limit of this technology was 0.12 µg/mL CRP. The system used for CRP detection can be extended to also monitor other clinically relevant molecules.
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Affiliation(s)
- Jianxi Qu
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada; (J.Q.); (Y.Z.)
| | - Yushan Zhang
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada; (J.Q.); (Y.Z.)
| | - Mathieu Chenier
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada;
| | - Chang-qing Xu
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada;
- Correspondence: ; Tel.: +1-905-525-9140
| | - Lan Chen
- Department of Pathology and Molecular Medicine, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada; (L.C.); (Y.W.)
| | - Yonghong Wan
- Department of Pathology and Molecular Medicine, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada; (L.C.); (Y.W.)
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3
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Hengoju S, Wohlfeil S, Munser AS, Boehme S, Beckert E, Shvydkiv O, Tovar M, Roth M, Rosenbaum MA. Optofluidic detection setup for multi-parametric analysis of microbiological samples in droplets. BIOMICROFLUIDICS 2020; 14:024109. [PMID: 32547676 PMCID: PMC7148121 DOI: 10.1063/1.5139603] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/27/2020] [Indexed: 05/03/2023]
Abstract
High-throughput microbiological experimentation using droplet microfluidics is limited due to the complexity and restricted versatility of the available detection techniques. Current detection setups are bulky, complicated, expensive, and require tedious optical alignment procedures while still mostly limited to fluorescence. In this work, we demonstrate an optofluidic detection setup for multi-parametric analyses of droplet samples by easily integrating micro-lenses and embedding optical fibers for guiding light in and out of the microfluidic chip. The optofluidic setup was validated for detection of absorbance, fluorescence, and scattered light. The developed platform was used for simultaneous detection of multiple parameters in different microbiological applications like cell density determination, growth kinetics, and antibiotic inhibition assays. Combining the high-throughput potential of droplet microfluidics with the ease, flexibility, and simplicity of optical fibers results in a powerful platform for microbiological experiments.
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Affiliation(s)
| | - S. Wohlfeil
- Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Albert-Einstein-Str. 7, 07745 Jena, Germany
| | - A. S. Munser
- Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Albert-Einstein-Str. 7, 07745 Jena, Germany
| | - S. Boehme
- Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Albert-Einstein-Str. 7, 07745 Jena, Germany
| | - E. Beckert
- Fraunhofer Institute for Applied Optics and Precision Engineering IOF, Albert-Einstein-Str. 7, 07745 Jena, Germany
| | - O. Shvydkiv
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Beutenbergstr. 11a, 07745 Jena, Germany
| | - M. Tovar
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Beutenbergstr. 11a, 07745 Jena, Germany
| | - M. Roth
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knoell Institute, Beutenbergstr. 11a, 07745 Jena, Germany
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4
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Lv N, Zhang L, Jiang L, Muhammad A, Wang H, Yuan L. A Design of Microfluidic Chip with Quasi-Bessel Beam Waveguide for Scattering Detection of Label-Free Cancer Cells. Cytometry A 2019; 97:78-90. [PMID: 31876079 DOI: 10.1002/cyto.a.23954] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 12/03/2019] [Accepted: 12/05/2019] [Indexed: 12/12/2022]
Abstract
Light scattering detection in microfluidic chips provides an important tool to identify cancer cells without any label processes. However, forward small-angle scattering signals of cells, which are related to their sizes and morphologies, are hard to be detected accurately when scattering angle is less than 11° in microfluidic chips by traditional lighting design due to the influence of incident beam. Therefore, cell's size and morphology being the golden standard for clinical detection may lose their efficacy in recognizing cancer cells from healthy ones. In this article, a novel lighting design in microfluidic chips is put forward in which traditional incident Gaussian beam can be modulated into quasi-Bessel beam by a microprism and waveguide. The quasi-Bessel beam's advantages of nondiffraction theoretically make forward scattering (FS) detection less than 11° possibly. Our experimental results for peripheral blood lymphocytes of human beings and cultured HeLa cells show that the detection rates increase by 47.87% and 46.79%, respectively, by the novel designed microfluidic chip compared to traditional Gaussian lighting method in microfluidic chips. © 2019 International Society for Advancement of Cytometry.
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Affiliation(s)
- Ning Lv
- School of Mechanical Engineering, Xian Jiaotong University, Xian, Shannxi, 710049, China
| | - Lu Zhang
- School of Mechanical Engineering, Xian Jiaotong University, Xian, Shannxi, 710049, China
| | - Lili Jiang
- School of Mechanical Engineering, Xian Jiaotong University, Xian, Shannxi, 710049, China
| | - Amir Muhammad
- School of Mechanical Engineering, Xian Jiaotong University, Xian, Shannxi, 710049, China
| | - Huijun Wang
- School of Mechanical Engineering, Xian Jiaotong University, Xian, Shannxi, 710049, China
| | - Li Yuan
- First Affiliated Hospital, Xian Jiaotong University, Xian, Shannxi, 710049, China
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5
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Shrirao AB, Fritz Z, Novik EM, Yarmush GM, Schloss RS, Zahn JD, Yarmush ML. Microfluidic flow cytometry: The role of microfabrication methodologies, performance and functional specification. TECHNOLOGY 2018; 6:1-23. [PMID: 29682599 PMCID: PMC5907470 DOI: 10.1142/s2339547818300019] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Flow cytometry is an invaluable tool utilized in modern biomedical research and clinical applications requiring high throughput, high resolution particle analysis for cytometric characterization and/or sorting of cells and particles as well as for analyzing results from immunocytometric assays. In recent years, research has focused on developing microfluidic flow cytometers with the motivation of creating smaller, less expensive, simpler, and more autonomous alternatives to conventional flow cytometers. These devices could ideally be highly portable, easy to operate without extensive user training, and utilized for research purposes and/or point-of-care diagnostics especially in limited resource facilities or locations requiring on-site analyses. However, designing a device that fulfills the criteria of high throughput analysis, automation and portability, while not sacrificing performance is not a trivial matter. This review intends to present the current state of the field and provide considerations for further improvement by focusing on the key design components of microfluidic flow cytometers. The recent innovations in particle focusing and detection strategies are detailed and compared. This review outlines performance matrix parameters of flow cytometers that are interdependent with each other, suggesting trade offs in selection based on the requirements of the applications. The ongoing contribution of microfluidics demonstrates that it is a viable technology to advance the current state of flow cytometry and develop automated, easy to operate and cost-effective flow cytometers.
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Affiliation(s)
- Anil B Shrirao
- Department of Biomedical Engineering, Rutgers University, 599, Taylor Road, Piscataway, NJ 08854
| | - Zachary Fritz
- Department of Biomedical Engineering, Rutgers University, 599, Taylor Road, Piscataway, NJ 08854
| | - Eric M Novik
- Hurel Corporation, 671, Suite B, U.S. Highway 1, North Brunswick, NJ 08902
| | - Gabriel M Yarmush
- Department of Biomedical Engineering, Rutgers University, 599, Taylor Road, Piscataway, NJ 08854
| | - Rene S Schloss
- Department of Biomedical Engineering, Rutgers University, 599, Taylor Road, Piscataway, NJ 08854
| | - Jeffrey D Zahn
- Department of Biomedical Engineering, Rutgers University, 599, Taylor Road, Piscataway, NJ 08854
| | - Martin L Yarmush
- Department of Biomedical Engineering, Rutgers University, 599, Taylor Road, Piscataway, NJ 08854
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6
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Abstract
This critical review summarizes the developments in the integration of micro-optical elements with microfluidic platforms for facilitating detection and automation of bio-analytical applications.
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Affiliation(s)
- Hui Yang
- Institute of Biomedical and Health Engineering
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Science
- 518055 Shenzhen
- China
| | - Martin A. M. Gijs
- Laboratory of Microsystems
- Ecole Polytechnique Fédérale de Lausanne
- 1015 Lausanne
- Switzerland
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7
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Zhao Y, Li Q, Hu X, Lo Y. Microfluidic cytometers with integrated on-chip optical systems for red blood cell and platelet counting. BIOMICROFLUIDICS 2016; 10:064119. [PMID: 28058085 PMCID: PMC5188361 DOI: 10.1063/1.4972105] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 11/27/2016] [Indexed: 05/07/2023]
Abstract
A microfluidic cytometer with integrated on-chip optical systems was designed for red blood cell (RBC) and platelet (PLT) counting. The design, fabrication, and characterization of the microfluidic cytometer with on-chip optical signal detection were described. With process using only a single mask, the device that integrates optical fibers and on-chip microlens with microfluidic channels on a polydimethylsiloxane layer by standard soft photolithography. This compact structure increased the sensitivity of the device and eliminated time-consuming free-space optical alignments. The microfluidic cytometer was used to count red blood cells and platelets. Forward scatter and extinction were collected simultaneously for each cell. Experimental results indicated that the microfluidic cytometer exhibited comparable performance with a conventional cytometer and demonstrated superior capacity to detect on-chip optical signals in a highly compact, simple, truly portable, and low-cost format that is well suitable for point-of-care clinical diagnostics.
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Affiliation(s)
- Yingying Zhao
- School of Life Science, Key Laboratory of Convergence Medical Engineering System and Healthcare Technology, Beijing Institute of Technology , Beijing 100081, China
| | - Qin Li
- School of Life Science, Key Laboratory of Convergence Medical Engineering System and Healthcare Technology, Beijing Institute of Technology , Beijing 100081, China
| | - Xiaoming Hu
- School of Life Science, Key Laboratory of Convergence Medical Engineering System and Healthcare Technology, Beijing Institute of Technology , Beijing 100081, China
| | - Yuhwa Lo
- Department of Electrical and Computer Engineering, University of California San Diego , California 92093-0407, USA
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8
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Zhang Y, Watts BR, Guo T, Zhang Z, Xu C, Fang Q. Optofluidic Device Based Microflow Cytometers for Particle/Cell Detection: A Review. MICROMACHINES 2016; 7:mi7040070. [PMID: 30407441 PMCID: PMC6189758 DOI: 10.3390/mi7040070] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 04/04/2016] [Accepted: 04/12/2016] [Indexed: 11/28/2022]
Abstract
Optofluidic devices combining micro-optical and microfluidic components bring a host of new advantages to conventional microfluidic devices. Aspects, such as optical beam shaping, can be integrated on-chip and provide high-sensitivity and built-in optical alignment. Optofluidic microflow cytometers have been demonstrated in applications, such as point-of-care diagnostics, cellular immunophenotyping, rare cell analysis, genomics and analytical chemistry. Flow control, light guiding and collecting, data collection and data analysis are the four main techniques attributed to the performance of the optofluidic microflow cytometer. Each of the four areas is discussed in detail to show the basic principles and recent developments. 3D microfabrication techniques are discussed in their use to make these novel microfluidic devices, and the integration of the whole system takes advantage of the miniaturization of each sub-system. The combination of these different techniques is a spur to the development of microflow cytometers, and results show the performance of many types of microflow cytometers developed recently.
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Affiliation(s)
- Yushan Zhang
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada.
| | - Benjamin R Watts
- ArtIC Photonics, 260 Terence Matthews Cres, Ottawa, ON K2M 2C7, Canada.
| | - Tianyi Guo
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada.
| | - Zhiyi Zhang
- Information and Communication Technologies, National Research Council of Canada, 1200 Montreal Road, Ottawa, ON K1A 0R6, Canada.
| | - Changqing Xu
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada.
| | - Qiyin Fang
- Department of Engineering Physics, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L8, Canada.
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9
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Guo T, Wei Y, Xu C, Watts BR, Zhang Z, Fang Q, Zhang H, Selvaganapathy PR, Deen MJ. Counting ofEscherichia coliby a microflow cytometer based on a photonic-microfluidic integrated device. Electrophoresis 2014; 36:298-304. [DOI: 10.1002/elps.201400211] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 10/06/2014] [Accepted: 10/09/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Tianyi Guo
- School of Biomedical Engineering; McMaster University; Hamilton Canada
- Institute of Microelectronics; Chinese Academy of Science; Beijing China
| | - Yin Wei
- Department of Engineering Physics; McMaster University; Hamilton Canada
| | - Changqing Xu
- Department of Engineering Physics; McMaster University; Hamilton Canada
| | - Benjamin R. Watts
- Department of Engineering Physics; McMaster University; Hamilton Canada
| | - Zhiyi Zhang
- Information and Communication Technologies; National Research Council of Canada; Ottawa Canada
| | - Qiyin Fang
- School of Biomedical Engineering; McMaster University; Hamilton Canada
- Department of Engineering Physics; McMaster University; Hamilton Canada
| | - Haiying Zhang
- Institute of Microelectronics; Chinese Academy of Science; Beijing China
| | | | - M. Jamal Deen
- School of Biomedical Engineering; McMaster University; Hamilton Canada
- Department of Electrical and Computer Engineering; McMaster University; Hamilton Canada
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10
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Watts BR, Zhang Z, Xu CQ, Cao X, Lin M. A method for detecting forward scattering signals on-chip with a photonic-microfluidic integrated device. BIOMEDICAL OPTICS EXPRESS 2013; 4:1051-60. [PMID: 23847731 PMCID: PMC3704087 DOI: 10.1364/boe.4.001051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 03/19/2013] [Accepted: 04/16/2013] [Indexed: 05/04/2023]
Abstract
A photonic integrated microfluidic device is demonstrated to perform optical excitation and forward scatter collection all on-chip in a planar format. Integrated on-chip optics formed a tailored beam geometry for optimal excitation of particles while a special design modification allowed for on-chip forward collection with the beam shaping capabilities. A notch was placed in the lens system that caused a dark spot on the facet of a collection waveguide while not affecting the beam geometry at the point of interrogation. The modified device with the ability to form a 10 μm beam geometry was demonstrated to detect the forward scatter from blank 5 μm diameter polystyrene beads. Free-space collection of side scatter signals was performed simultaneously with the on-chip collection and the designs demonstrated and enhanced SNR while the reliability of detection was determined to be appropriate for many applications. Excellent performance was confirmed via a false positive rate of 0.4%, a missed events rate of 6.8%, and a coincident rate of 96.3% as determined between simultaneously performed free-space and on-chip detection schemes.
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Affiliation(s)
- Benjamin R. Watts
- Department of Engineering Physics, McMaster University, Hamilton, Ontario L8S 4L7, Canada
| | - Zhiyi Zhang
- Institute of Microstructural Science, National Research Council of Canada, Ottawa, Ontario K1A 0R6, Canada
| | - Chang-Qing Xu
- Department of Engineering Physics, McMaster University, Hamilton, Ontario L8S 4L7, Canada
| | - Xudong Cao
- Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Min Lin
- Ottawa Laboratory Fallowfield, Canadian Food Inspection Agency, Ottawa, Ontario, K2H 8P9, Canada
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Watts BR, Zhang Z, Xu CQ, Cao X, Lin M. Integration of optical components on-chip for scattering and fluorescence detection in an optofluidic device. BIOMEDICAL OPTICS EXPRESS 2012; 3:2784-93. [PMID: 23162718 PMCID: PMC3493222 DOI: 10.1364/boe.3.002784] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Revised: 06/01/2012] [Accepted: 06/13/2012] [Indexed: 05/04/2023]
Abstract
An optofluidic device is demonstrated with photonic components integrated onto the chip for use in fluorescence and scatter detection and counting applications. The device is fabricated by integrating the optical and fluidic components in a single functional layer. Optical excitation on-chip is accomplished via a waveguide integrated with a system of lenses that reforms the geometry of the beam in the microfluidic channel into a specific shape that is more suitable for reliable detection. Separate counting tests by detecting fluorescence and scattered signals from 2.5 and 6.0 μm beads were performed and found to show detection reliability comparable to that of conventional means of excitation and an improvement over other microchip-based designs.
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Affiliation(s)
- Benjamin R Watts
- Department of Engineering Physics, McMaster University, Hamilton, Ontario L8S 4L7, Canada
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12
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Watts BR, Zhang Z, Xu CQ, Cao X, Lin M. A photonic-microfluidic integrated device for reliable fluorescence detection and counting. Electrophoresis 2012; 33:3236-44. [DOI: 10.1002/elps.201200311] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Revised: 06/08/2012] [Accepted: 07/01/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Benjamin R. Watts
- Department of Engineering Physics; McMaster University; Hamilton; Ontario; Canada
| | - Zhiyi Zhang
- Institute for Microstructural Sciences; National Research Council of Canada; Ottawa; Ontario; Canada
| | - Chang Qing Xu
- Department of Engineering Physics; McMaster University; Hamilton; Ontario; Canada
| | - Xudong Cao
- Department of Chemical and Biological Engineering; University of Ottawa; Ottawa; Ontario; Canada
| | - Min Lin
- Canadian Food Inspection Agency; Ottawa; Ontario; Canada
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