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Zhao Z, Vaidyanathan S, Bhanja P, Gamage S, Saha S, McKinney C, Choi J, Park S, Pahattuge T, Wijerathne H, Jackson JM, Huppert ML, Witek MA, Soper SA. In-plane Extended Nano-coulter Counter (XnCC) for the Label-free Electrical Detection of Biological Particles. ELECTROANAL 2022; 34:1961-1975. [PMID: 37539083 PMCID: PMC10399599 DOI: 10.1002/elan.202200091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 06/14/2022] [Indexed: 11/10/2022]
Abstract
We report an in-plane extended nanopore Coulter counter (XnCC) chip fabricated in a thermoplastic via imprinting. The fabrication of the sensor utilized both photolithography and focused ion beam milling to make the microfluidic network and the in-plane pore sensor, respectively, in Si from which UV resin stamps were generated followed by thermal imprinting to produce the final device in the appropriate plastic (cyclic olefin polymer, COP). As an example of the utility of this in-plane extended nanopore sensor, we enumerated SARS-CoV-2 viral particles (VPs) affinity-selected from saliva and extracellular vesicles (EVs) affinity-selected from plasma samples secured from mouse models exposed to different ionizing radiation doses.
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Affiliation(s)
- Zheng Zhao
- Bioengineering Program, The University of Kansas, Lawrence, KS 66045
- Center of BioModular Multiscale Systems for Precision Medicine, The University of Kansas, Lawrence, KS 66045
| | - Swarnagowri Vaidyanathan
- Bioengineering Program, The University of Kansas, Lawrence, KS 66045
- Center of BioModular Multiscale Systems for Precision Medicine, The University of Kansas, Lawrence, KS 66045
| | - Payel Bhanja
- Department of Radiation Oncology, University of Kansas Medical Center, Kansas City, KS 66160
- University of Kansas Cancer Center, University of Kansas Medical Center, Kansas City, KS 66160
| | - Sachindra Gamage
- Center of BioModular Multiscale Systems for Precision Medicine, The University of Kansas, Lawrence, KS 66045
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | - Subhrajit Saha
- Department of Radiation Oncology, University of Kansas Medical Center, Kansas City, KS 66160
- University of Kansas Cancer Center, University of Kansas Medical Center, Kansas City, KS 66160
| | - Collin McKinney
- Center of BioModular Multiscale Systems for Precision Medicine, The University of Kansas, Lawrence, KS 66045
- CRITCL, The University of North Carolina, Chapel Hill, NC
| | - Junseo Choi
- Center of BioModular Multiscale Systems for Precision Medicine, The University of Kansas, Lawrence, KS 66045
- CRITCL, The University of North Carolina, Chapel Hill, NC
| | - Sunggook Park
- Center of BioModular Multiscale Systems for Precision Medicine, The University of Kansas, Lawrence, KS 66045
- CRITCL, The University of North Carolina, Chapel Hill, NC
| | - Thilanga Pahattuge
- Center of BioModular Multiscale Systems for Precision Medicine, The University of Kansas, Lawrence, KS 66045
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | - Harshani Wijerathne
- Center of BioModular Multiscale Systems for Precision Medicine, The University of Kansas, Lawrence, KS 66045
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | - Joshua M Jackson
- Center of BioModular Multiscale Systems for Precision Medicine, The University of Kansas, Lawrence, KS 66045
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | - Mateusz L Huppert
- Department of Industrial and Mechanical Engineering, Louisiana State University, Baton Rouge, LA 70803
| | - Małgorzata A Witek
- Center of BioModular Multiscale Systems for Precision Medicine, The University of Kansas, Lawrence, KS 66045
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
| | - Steven A Soper
- Bioengineering Program, The University of Kansas, Lawrence, KS 66045
- Center of BioModular Multiscale Systems for Precision Medicine, The University of Kansas, Lawrence, KS 66045
- University of Kansas Cancer Center, University of Kansas Medical Center, Kansas City, KS 66160
- Department of Chemistry, The University of Kansas, Lawrence, KS 66045
- BioFluidica, Inc., San Diego, CA
- Department of Mechanical Engineering, The University of Kansas, Lawrence, KS 66045
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Cai K, Mankar S, Ajiri T, Shirai K, Yotoriyama T. An integrated high-throughput microfluidic circulatory fluorescence-activated cell sorting system (μ-CFACS) for the enrichment of rare cells. LAB ON A CHIP 2021; 21:3112-3127. [PMID: 34286793 DOI: 10.1039/d1lc00298h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
There is an increasing need for the enrichment of rare cells in the clinical environments of precision medicine, personalized medicine, and regenerative medicine. With the possibility of becoming the next-generation cell sorters, microfluidic fluorescence-activated cell sorting (μ-FACS) devices have been developed to avoid cross-contamination, minimize device footprint, and eliminate bio-aerosols. However, due to highly precise flow control, the achievable throughput of the μ-FACS system is generally lower than the throughput of conventional FACS devices. Here, we report a fully integrated high-throughput microfluidic circulatory fluorescence-activated cell sorting (μ-CFACS) system for the enrichment of clinical rare cells. A microfluidic sorting cartridge has been developed for enriching samples through a sequential sorting process, which was further realized by the integration of both fast amplified piezoelectrically actuated on-chip valves and compact pneumatic cylinders actuated on-chip valves. At an equivalent throughput of ∼8000 events per second (eps), the purity of rare fluorescent microparticles has been significantly increased from ∼0.01% to ∼27.97%. An enrichment of ∼9400-fold from 0.009% to 81.86% has also been demonstrated for isolating fluorescently labelled MCF-7 breast cancer cells from Jurkat cells at an equivalent sorting throughput of ∼6400 eps. With the advantages of high throughput and contamination-free design, the proposed integrated μ-CFACS system provides a new option for the enrichment of clinical rare cells.
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Affiliation(s)
- Kunpeng Cai
- Central Research Laboratories, Sysmex Corporation, 4-4-4 Takatsukadai, Nishi-ku, Kobe 651-2271, Japan.
| | - Shruti Mankar
- Central Research Laboratories, Sysmex Corporation, 4-4-4 Takatsukadai, Nishi-ku, Kobe 651-2271, Japan.
| | - Taiga Ajiri
- Central Research Laboratories, Sysmex Corporation, 4-4-4 Takatsukadai, Nishi-ku, Kobe 651-2271, Japan.
| | - Kentaro Shirai
- Central Research Laboratories, Sysmex Corporation, 4-4-4 Takatsukadai, Nishi-ku, Kobe 651-2271, Japan.
| | - Tasuku Yotoriyama
- Central Research Laboratories, Sysmex Corporation, 4-4-4 Takatsukadai, Nishi-ku, Kobe 651-2271, Japan.
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Cai K, Mankar S, Maslova A, Ajiri T, Yotoriyama T. Amplified piezoelectrically actuated on-chip flow switching for a rapid and stable microfluidic fluorescence activated cell sorter. RSC Adv 2020; 10:40395-40405. [PMID: 35520855 PMCID: PMC9057478 DOI: 10.1039/d0ra04919k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 10/25/2020] [Indexed: 01/22/2023] Open
Abstract
With the potential to avoid cross-contamination, eliminate bio-aerosols, and minimize device footprints, microfluidic fluorescence-activated cell sorting (μ-FACS) devices could become the platform for the next generation cell sorter. Here, we report an on-chip flow switching based μ-FACS mechanism with piezoelectric actuation as a fast and robust sorting solution. A microfluidic chip with bifurcate configuration and displacement amplified piezoelectric microvalves has been developed to build the μ-FACS system. Rare fluorescent microparticles of different sizes have been significantly enriched from a purity of ∼0.5% to more than 90%. An enrichment of 150-fold from ∼0.6% to ∼91% has also been confirmed for fluorescently labeled MCF-7 breast cancer cells from Jurkat cells, while viability after sorting was maintained. Taking advantage of its simple structure, low cost, fast response, and reliable flow regulation, the proposed μ-FACS system delivers a new option that can meet the requirements of sorting performance, target selectivity, device lifetime, and cost-effectiveness of implementation.
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Affiliation(s)
- Kunpeng Cai
- Central Research Laboratories, Sysmex Corporation 4-4-4 Takatsukadai, Nishi-ku Kobe 651-2271 Japan
| | - Shruti Mankar
- Central Research Laboratories, Sysmex Corporation 4-4-4 Takatsukadai, Nishi-ku Kobe 651-2271 Japan
| | - Anastasia Maslova
- Central Research Laboratories, Sysmex Corporation 4-4-4 Takatsukadai, Nishi-ku Kobe 651-2271 Japan
| | - Taiga Ajiri
- Central Research Laboratories, Sysmex Corporation 4-4-4 Takatsukadai, Nishi-ku Kobe 651-2271 Japan
| | - Tasuku Yotoriyama
- Central Research Laboratories, Sysmex Corporation 4-4-4 Takatsukadai, Nishi-ku Kobe 651-2271 Japan
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Luo J, Chen C, Li Q. White blood cell counting at point-of-care testing: A review. Electrophoresis 2020; 41:1450-1468. [PMID: 32356920 DOI: 10.1002/elps.202000029] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 04/11/2020] [Accepted: 04/20/2020] [Indexed: 11/12/2022]
Abstract
White blood cells, which are also called leukocytes, are found in the immune system that are involved in protecting the body against infections and foreign invaders. Conventional methods of leukocyte analysis provide valuable and accurate information to medical specialists. Analyzing and diagnosing of a disease requires a combination of multiple biomarkers, in some cases, however, such as personal health care, this will occupy some medical resources and causes unnecessary consumption. Traditional method (such as flow cytometer) for WBC counting is time and labor consuming. Compared to gold standard (flow-based fraction/micropore filtration) or improved filtration methods for WBC counting, this is still a lengthy and time consuming process and can lead to membrane fouling due to the rapid accumulation of biological materials. Therefore, the analysis of WBC counts requires more compact and efficient equipment. The microfluidic technologies, powered by different field (force, thermal, acoustic, optical, magnetic) and other methods for leukocyte counting and analysis, are much cost-efficient and can be used in in-home or in resource-limited areas to achieve Point-of-Care (POC). In this review, we highlight the mainstream devices that have been commercialized and extensively employed for patients for WBC counting, Next, we present some recent development with regards to leucocyte counting (mainly microfluidic technologies) and comment on their relative merits. We aim to focus and discuss the possibility of achieving POC and help researchers to tackle individual challenges accordingly. Finally, we offer some technologies in addition to previous detection devices, such as image recognition technology and cloud computing, which we believe have great potential to further promote real-time detection and improve medical diagnosis.
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Affiliation(s)
- Jianke Luo
- College of Glasgow, University of Electronic Science and Technology of China, Chengdu, P. R. China
| | - Chunmei Chen
- Department of Laboratory Medicine, Health Industry Co., Ltd of the Fifth Xiangya Hospital, Hunan, P. R. China.,The Second Xiangya Hospital Central South University, Changsha, P. R. China
| | - Qing Li
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P. R. China
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Zhao W, Tian S, Huang L, Liu K, Dong L, Guo J. A smartphone-based biomedical sensory system. Analyst 2020; 145:2873-2891. [PMID: 32141448 DOI: 10.1039/c9an02294e] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Disease diagnostics, food safety monitoring and environmental quality monitoring are the key means to safeguard human health. However, conventional detection devices for health care are costly, bulky and complex, restricting their applications in resource-limited areas of the world. With the rapid development of biosensors and the popularization of smartphones, smartphone-based sensing systems have emerged as novel detection devices that combine the sensitivity of biosensors and diverse functions of smartphones to provide a rapid, low-cost and convenient detection method. In these systems, a smartphone is used as a microscope to observe and count cells, as a camera to record fluorescence images, as an analytical platform to analyze experimental data, and as an effective tool to connect detection devices and online doctors. These systems are widely used for cell analysis, biochemical analysis, immunoassays, and molecular diagnosis, which are applied in the fields of disease diagnostics, food safety monitoring and environmental quality monitoring. Therefore, we discuss four types of smartphone-based sensing systems in this review paper, specifically in terms of the structure, performance and efficiency of these systems. Finally, we give some suggestions for improvement and future prospective trends.
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Affiliation(s)
- Wenhao Zhao
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China.
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Guzzi F, Candeloro P, Coluccio ML, Cristiani CM, Parrotta EI, Scaramuzzino L, Scalise S, Dattola E, D’Attimo MA, Cuda G, Lamanna E, Passacatini LC, Carbone E, Krühne U, Di Fabrizio E, Perozziello G. A Disposable Passive Microfluidic Device for Cell Culturing. BIOSENSORS-BASEL 2020; 10:bios10030018. [PMID: 32121446 PMCID: PMC7146476 DOI: 10.3390/bios10030018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/21/2020] [Accepted: 02/26/2020] [Indexed: 12/30/2022]
Abstract
In this work, a disposable passive microfluidic device for cell culturing that does not require any additional/external pressure sources is introduced. By regulating the height of fluidic columns and the aperture and closure of the source wells, the device can provide different media and/or drug flows, thereby allowing different flow patterns with respect to time. The device is made of two Polymethylmethacrylate (PMMA) layers fabricated by micro-milling and solvent assisted bonding and allows us to ensure a flow rate of 18.6 μl/ℎ - 7%/day, due to a decrease of the fluid height while the liquid is driven from the reservoirs into the channels. Simulations and experiments were conducted to characterize flows and diffusion in the culture chamber. Melanoma tumor cells were used to test the device and carry out cell culturing experiments for 48 hours. Moreover, HeLa, Jurkat, A549 and HEK293T cell lines were cultivated successfully inside the microfluidic device for 72 hours.
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Affiliation(s)
- Francesco Guzzi
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Patrizio Candeloro
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Maria Laura Coluccio
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Costanza Maria Cristiani
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Elvira Immacolata Parrotta
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Luana Scaramuzzino
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Stefania Scalise
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Elisabetta Dattola
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Maria Antonia D’Attimo
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Giovanni Cuda
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Ernesto Lamanna
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Lucia Carmela Passacatini
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Ennio Carbone
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Ulrich Krühne
- Department of Chemical and Biochemical Engineering, Technology University of Denmark, 2800 Kongens Lyngby, Denmark;
| | - Enzo Di Fabrizio
- Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia;
| | - Gerardo Perozziello
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
- Correspondence:
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Zhao W, Tian S, Huang L, Liu K, Dong L. The review of Lab-on-PCB for biomedical application. Electrophoresis 2020; 41:1433-1445. [PMID: 31945803 DOI: 10.1002/elps.201900444] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/08/2020] [Accepted: 01/10/2020] [Indexed: 12/29/2022]
Abstract
Prevention of infectious diseases, diagnosis of diseases, and determination of treatment options all rely on biosensors to detect and analyze biomarkers, which are usually divided into four parts: cell analysis, biochemical analysis, immunoassay, and molecular diagnosis. However, traditional biosensing devices are expensive, bulky, and require a lot of time to detect, which also limited its application in resource-limited areas. In recent years, Lab-on-PCB, which combines biosensing technology and PCB technology, has been widely used in biomedical applications due to its high integration, personalized design, and easy mass production. Among these Lab-on-PCB sensing devices, the PCB circuit plays an important role. It can be directly used as a resistance sensor to count cells, and also used as a control device to automatically control the detection device. Flexible PCBs can be used to make wearable medical biosensors. In addition, due to the high degree of integration of the PCB circuit, Lab-on-PCB can perform multiple inspections on the same platform, which reduces the inspection time equivalently. Therefore, in this review paper, we discuss the application of Lab-on-PCB in four analysis methods of cell analysis, biochemical analysis, immunoassay, and molecular diagnosis, and give some suggestions for improvement and future development trends at the end.
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Affiliation(s)
- Wenhao Zhao
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China
| | - Shulin Tian
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China
| | - Lei Huang
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China
| | - Ke Liu
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China
| | - Lijuan Dong
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, P.R. China
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Olmos CM, Rosero G, Fernández-Cabada T, Booth R, Der M, Cabaleiro JM, Debut A, Cumbal L, Pérez MS, Lerner B. Hybrid microchannel-solid state micropore device for fast and optical cell detection. RSC Adv 2020; 10:5361-5370. [PMID: 35498312 PMCID: PMC9049143 DOI: 10.1039/c9ra09939e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 01/20/2020] [Indexed: 11/28/2022] Open
Abstract
This paper presents a methodology for cell detection and counting using a device that combines PDMS (polydimethylsiloxane) microfluidic multilayer channels with a single solid state micropore. Optimal conditions of solid-state micropore fabrication from crystalline silicon wafers are presented. Micropores of varying size can be obtained by directly etching using an etchant agent concentration of 50 wt% KOH, at varying temperatures (40, 60, 80 °C) and voltages (100, 500, 1000 mV). Scanning Electron Microscopy (SEM), and profilometry techniques have been used for the micropore characterization. In order to find optimal conditions for cell detection a COMSOL Multiphysics simulation was performed. Pressure drop, shear stress, fluid viscosities and flow rates parameters were evaluated. The potential viability of the device for cell detection and counting, avoiding cellular damage, is demonstrated. This paper presents a methodology for cell detection and counting using a device that combines PDMS (polydimethylsiloxane) microfluidic multilayer channels with a single solid state micropore.![]()
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Affiliation(s)
- Carol M. Olmos
- Facultad Regional Haedo
- Universidad Tecnológica Nacional (UTN)
- Haedo
- Argentina
| | - Gustavo Rosero
- Facultad Regional Haedo
- Universidad Tecnológica Nacional (UTN)
- Haedo
- Argentina
| | | | | | - Manuel Der
- Departamento de Física
- Facultad de Ciencias Exactas y Naturales
- Universidad de Buenos Aires (UBA)
- Cuidad Universitaria
- Buenos Aires
| | - Juan M. Cabaleiro
- CONICET-Fluid Dynamics Laboratory
- Facultad de ingeniería
- Universidad de Buenos Aires (UBA)
- Buenos Aires
- Argentina
| | - Alexis Debut
- Centro de Nanociencia y Nanotecnología
- Universidad de las Fuerzas Armadas ESPE
- Sangolquí
- Ecuador
| | - Luis Cumbal
- Centro de Nanociencia y Nanotecnología
- Universidad de las Fuerzas Armadas ESPE
- Sangolquí
- Ecuador
| | - Maximiliano S. Pérez
- Facultad Regional Haedo
- Universidad Tecnológica Nacional (UTN)
- Haedo
- Argentina
- Instituto de Ingeniería Biomédica
| | - Betiana Lerner
- Facultad Regional Haedo
- Universidad Tecnológica Nacional (UTN)
- Haedo
- Argentina
- Department of Electrical and Computer Engineering
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Liang J, Mu T. Recognition of big data mixed Raman spectra based on deep learning with smartphone as Raman analyzer. Electrophoresis 2019; 41:1413-1417. [PMID: 31811819 DOI: 10.1002/elps.201900302] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 11/22/2019] [Accepted: 11/25/2019] [Indexed: 11/05/2022]
Abstract
Raman spectral detection has emerged as a powerful analytical technique due to the advantages of fast acquisition, non-invasion, and low cost. The on-site application is highly dependent on Raman automatic analysis algorithm. However, current Raman algorithm research mainly focuses on small sample Raman spectroscopy (RS) identification with defects of low accuracy and detection rate. It is also difficult to realize rapid RS measurement under big data. In this paper, rapid recognition of mixtures in complex environments was realized by establishing a fast Raman analysis model based on deep learning through data training, self-learning, and parameter optimization. The cloud network architecture was proposed to apply deep learning to real-time detection using Smartphone-based Raman devices. This research solves the technical problems about mixture recognition under big data and thus could be used as a new method for fast and field RS detection in complex environments.
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Affiliation(s)
- Jie Liang
- Institute of Clean Energy and Advanced Materials, Southwest University, Chongqing, P. R. China
| | - Taotao Mu
- Beijing Engineering Research Center of Optoelectronic Information and Instruments, Beijing Information Science and Technology University, Beijing, P. R. China
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Kourmpetis I, Kastania AS, Ellinas K, Tsougeni K, Baca M, De Malsche W, Gogolides E. Gradient-temperature hot-embossing for dense micropillar array fabrication on thick cyclo-olefin polymeric plates: An example of a microfluidic chromatography column fabrication. MICRO AND NANO ENGINEERING 2019. [DOI: 10.1016/j.mne.2019.100042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Qian W, Qian C. Frequency Modulated Parametric Oscillation for Antenna Powered Wireless Transmission of Voltage Sensing Signals. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2019; 13:1783-1791. [PMID: 31714233 PMCID: PMC6955202 DOI: 10.1109/tbcas.2019.2951514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Wireless transmission of voltage signals are particularly useful for sensors embedded inside a closed environment where long-term operation without internal batteries is desirable. For this purpose, voltage tuning resonators can be used, because their voltage-dependent frequency responses can be contactlessly characterized by loop antennas connected to the output and input ports of a network analyzer. However, such passive sensors have limited remote detectability and temporal resolution, especially for smaller frequency shifts that would require repetitive averaging for acceptable measurement accuracy. To overcome these limitations, a double frequency parametric resonator is inductively coupled with a voltage tuning resonator to convert resonance frequency shifts of the passive sensor into frequency encoded oscillation signals that can be instantaneously detected over larger distance separations. This antenna powered FM transmitter has a compact design to achieve good voltage sensitivity and linearity, making it potentially useful for multiple applications from PH sensing to electrophysiological recording.
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Affiliation(s)
- Wei Qian
- Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI, 48824, USA
| | - Chunqi Qian
- Department of Radiology, Michigan State University, East Lansing, MI, 48824, USA
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12
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Fu Y, Yan M, Yang H, Ma X, Guo J. Palm-Sized Uric Acid Test Lab Powered by Smartphone for Proactive Gout Management. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2019; 13:950-956. [PMID: 31226083 DOI: 10.1109/tbcas.2019.2922674] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A simple and convenient photochemical system based on a smartphone-powered photochemical dongle and disposable photochemical test strips was proposed in this paper. The components of the system were only connected with each other in a simple hot-plug way, but provided a convenient function of biological sample detection. The photochemical dongle working as a highly rigorous reflectance spectral analyzer was used to evaluate the uric acid levels of the fingertip whole blood with the participation of the photochemical test strip for the point of care, which showed good agreement (linear regression coefficient of 0.99338) as compared to the results from the specific and bulky biochemical analyzer in the clinical test. Furthermore, combined with the widespread smartphone and well-developed Internet, the photochemical dongle could provide a flexible and portable platform for the evaluation and treatment of chronic diseases, such as gout, and it is promising to be applied in the remote chronic disease management.
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13
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Fu Y, Tan H, Wu X, Wu X, Yang Y, Gao Y, Liu R, Qi M, Chen X, Ning Y, Sun W, Chang N, Ma J, Cheng K, Yang H, Li Q, Wang P, Wu C, Xian H, Wang L. Combination of medical and health care based on digital smartphone-powered photochemical dongle for renal function management. Electrophoresis 2019; 42:1043-1049. [PMID: 31087687 DOI: 10.1002/elps.201900136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/01/2019] [Accepted: 05/01/2019] [Indexed: 01/13/2023]
Abstract
Currently, the global healthcare market is increasing at high speed with the impendent global aging issue. Healthcare Industry 4.0 has emerged as an efficient solution towards the aging issue since it was integrated with ubiquitous medical sensors, big health processing platform, high bandwidth, speed technologies, and medical services, etc. It is believed to fulfil the requirement of the tremendously growing health market. The acquisition of medical data acts as the dominant precondition to implement the Healthcare Industry 4.0. In the same way, the widely available smartphone could serve as the best biomedical information collect station. In this study, a smartphone-powered photochemical dongle is demonstrated to precisely estimate blood creatinine from the fingertip blood, which works as a highly compact reflectance spectral analyzer with an enzymatically dry chemical test strip. Comparing with conventional laboratory facility for the evaluation and treatment of chronic kidney disease (CKD), it implemented the platform of point care with agreed accuracy. In order to estimate the efficiency of treatment and recovery of the CKD, the proposed photochemical dongle would provide a flexible and rapid platform for point of care. Furthermore, the proposed measured technology is very promising method for remote CKD management.
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Affiliation(s)
- Yusheng Fu
- School of Information and Communication Engineering, University of Electronic Science and Technology, Chengdu, P. R. China
| | - Haiyan Tan
- School of Information and Communication Engineering, University of Electronic Science and Technology, Chengdu, P. R. China
| | - Xiujian Wu
- Department of Otorhinolaryngology Head and Neck Surgery, Yongchuan Hospital Affiliated to Chongqing Medical University, Yongchuan, Chongqing, P. R. China
| | - Xiaohe Wu
- Jiangxi Provincial People's Hospital, Nanchang, Jiangxi, P. R. China
| | - Yongzheng Yang
- The First People's Hospital of Neijiang, Neijiang, Sichuan, P. R. China
| | - Yanling Gao
- The Second People's Hospital of Yibin, Yibin City, Sichuan Province, P. R. China
| | - Ruowei Liu
- Nanchong Central Hospital, Nanchong City, Sichuan Province, P. R. China
| | - Min Qi
- Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang City, Henan, P. R. China
| | - Xiaoyun Chen
- Dali Bai Autonomous Prefecture People's Hospital, Zibo, Shandong, P. R. China
| | - Yaochao Ning
- The First Hospital of Zibo, Zibo, Shandong, P. R. China
| | - Weidong Sun
- Zigong Fourth People's Hospital, Zigong City, Sichuan, P. R. China
| | - Nianhuan Chang
- Yuncheng Central Hospital, Yuncheng City, Shanxi, P. R. China
| | - Junjie Ma
- Suining Central Hospital, Suining City, Sichuan, P. R. China
| | - Kang Cheng
- The Affiliated Hospital of Northwest University (Xi'an NO. 3 hospital), Xi'an, Shaanxi, P. R. China
| | - Hongni Yang
- Department of Geratology, Hospital of Xinjiang Province, Urumqi, Xinjang, P. R. China
| | - Qing Li
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P. R. China
| | - Ping Wang
- Department of Otolaryngology, Nuclear Industry 416 Hospital, The second Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, P. R. China
| | - Chaoran Wu
- Department of Anesthesiology, Shenzhen People's hospital, Shenzhen, Guangdong, P. R. China
| | - Hong Xian
- West P. R. China Hospital of Sichuan University, Chengdu, Sichuan, P. R. China
| | - Li Wang
- The People's Hospital Of Lesh, Leshan City, Sichuan Province, P. R. China
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14
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Verma RS, Ahlawat S, Uppal A. Optical guiding-based cell focusing for Raman flow cell cytometer. Analyst 2019; 143:2648-2655. [PMID: 29756139 DOI: 10.1039/c8an00037a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We report the use of an optical guiding arrangement generated in a microfluidic channel to produce a stream of single cells in a line for single-cell Raman spectroscopic analysis. The optical guiding arrangement consisted of dual-line optical tweezers, generated using a 1064 nm laser, aligned in the shape of a '' symbol. By controlling the laser power in the tweezers and the flow rate in the microfluidic channel, a single line flow of cells could be produced in the tail of the guiding arrangement, where the 514.5 nm Raman excitation beam was also located. Furthermore, by resonantly exciting the Raman spectrum, a good-quality Raman spectrum could be recorded from the flowing single cells as they passed through the Raman excitation focal spot without the need to trap the cells. As a proof of concept, it was shown that red blood cells (RBCs) could be guided to the tail of the optical guide and the Raman spectra of the resonantly excited cells could be recorded in a continuous manner without trapping the cells at a cell flow rate of ∼500 cells per h. From the recorded spectra, we were able to distinguish between RBCs containing hemoglobin in the normal form (normal-RBCs) and the met form (met-RBCs) from a mixture of RBCs comprising met-RBCs and normal-RBCs in a ratio of 1 : 9.
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15
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Wang J, Huang X, Tang SY, Shi GM, Ma X, Guo J. Blood Triglyceride Monitoring With Smartphone as Electrochemical Analyzer for Cardiovascular Disease Prevention. IEEE J Biomed Health Inform 2019; 23:66-71. [DOI: 10.1109/jbhi.2018.2845860] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Go T, Yoon GY, Lee SJ. Learning-based automatic sensing and size classification of microparticles using smartphone holographic microscopy. Analyst 2019; 144:1751-1760. [DOI: 10.1039/c8an02157k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A microparticle classifier is established by synergetic integration of smartphone-based digital in-line holographic microscopy and supervised machine learning.
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Affiliation(s)
- Taesik Go
- Department of Mechanical Engineering
- Pohang University of Science and Technology
- Pohang
- Republic of Korea
| | - Gun Young Yoon
- Department of Mechanical Engineering
- Pohang University of Science and Technology
- Pohang
- Republic of Korea
| | - Sang Joon Lee
- Department of Mechanical Engineering
- Pohang University of Science and Technology
- Pohang
- Republic of Korea
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17
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Tan F, Wang T, Wang H, Zheng Y. Microfluidic techniques for tumor cell detection. Electrophoresis 2018; 40:1230-1244. [PMID: 30548633 DOI: 10.1002/elps.201800413] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 11/20/2018] [Accepted: 12/02/2018] [Indexed: 11/09/2022]
Abstract
Cancer metastasis is the main cause of cancer-related death. Early detection of tumor cell in peripheral blood is of great significant to early diagnosis and effective treatment of cancer. Over the past two decades, microfluidic technologies have been demonstrated to have great potential for isolating and detecting tumor cell from blood. The present paper reviews microfluidic techniques for tumor cell detection based on various physical principles. The specific methods are categorized into active and passive methods depending on whether extra force field is applied. Working principles of the two methods are explained in detail, including microfluidics combined with optical tweezer, electric field, magnetic field, acoustophoresis, and without extra fields for tumor cell detection. Typical experiments and the results are reviewed. Based on these, research characteristics of the two methods are analyzed.
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Affiliation(s)
- Feifei Tan
- College of Communication Engineering, Chengdu University of Information Technology, Chengdu, Sichuan, P. R. China
| | - Tianbao Wang
- College of Communication Engineering, Chengdu University of Information Technology, Chengdu, Sichuan, P. R. China
| | - Haishi Wang
- College of Communication Engineering, Chengdu University of Information Technology, Chengdu, Sichuan, P. R. China
| | - Yuzheng Zheng
- College of Communication Engineering, Chengdu University of Information Technology, Chengdu, Sichuan, P. R. China
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18
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Shaikh MO, Zhu PY, Wang CC, Du YC, Chuang CH. Electrochemical immunosensor utilizing electrodeposited Au nanocrystals and dielectrophoretically trapped PS/Ag/ab-HSA nanoprobes for detection of microalbuminuria at point of care. Biosens Bioelectron 2018; 126:572-580. [PMID: 30500772 DOI: 10.1016/j.bios.2018.11.035] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 11/11/2018] [Accepted: 11/20/2018] [Indexed: 12/20/2022]
Abstract
In this study, we have fabricated a simple disposable electrochemical immunosensor for the point of care testing of microalbuminuria, a well-known clinical biomarker for the onset of chronic kidney disease. The immunosensor is fabricated by screen-printing carbon interdigitated microelectrodes on a flexible plastic substrate and utilizes electrochemical impedance spectroscopy to enable direct and label free immunosensing by analyzing interfacial changes on the electrode surface. To improve conductivity and biocompatibility of the screen-printed electrodes, we have modified it with gold nanoparticles, which are electrodeposited using linear sweep voltammetry. To enable efficient immobilization of HSA antibodies, we have developed novel PS/Ag/ab-HSA nanoprobes (polystyrene nanoparticle core with silver nanoshells covalently conjugated to HSA antibodies), and these nanoprobes are trapped on the electrode surface using dielectrophoresis. Each immunosensor has two sensing sites corresponding to test and control to improve specificity by performing differential analysis. Immunosensing results show that the normalized impedance response is linearly dependent on albumin concentration in the clinically relevant range with good repeatability. We have also developed a portable impedance readout module that can analyze the data obtained from the immunosensor and transmit it wirelessly for cloud computing. Consequently, the developed immunosensing platform can be extended to the detection of a range of immunoreactions and shows promise for point of diagnosis and public healthcare monitoring.
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Affiliation(s)
- Muhammad Omar Shaikh
- Institute of Medical Science and Technology, National Sun Yat-sen University, Taiwan
| | - Pei-Yu Zhu
- Department of Mechanical Engineering, Southern Taiwan University of Science and Technology, Taiwan
| | - Cheng-Chien Wang
- Department of Chemistry and Material Engineering, Southern Taiwan University of Science and Technology, Taiwan
| | - Yi-Chun Du
- Department of Electrical Engineering, Southern Taiwan University of Science and Technology, Taiwan
| | - Cheng-Hsin Chuang
- Institute of Medical Science and Technology, National Sun Yat-sen University, Taiwan.
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19
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A Numerical Model of Blood Flow Velocity Measurement Based on Finger Ring. JOURNAL OF HEALTHCARE ENGINEERING 2018; 2018:3916481. [PMID: 30402212 PMCID: PMC6192088 DOI: 10.1155/2018/3916481] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 07/31/2018] [Indexed: 11/17/2022]
Abstract
Aiming to measure the blood flow velocity in a finger, a novel noninvasive method, i.e., a ring with a heat source chip and a temperature sensor, is designed in this paper. The heat source chip is used to heat the finger and generate heat diffusion between the chip and the temperature sensor. And the temperature sensor is designed to measure the temperature difference. Since the blood flow is the main medium of heat diffusion in bodies, part from the heat energy in the tissue will be taken away by the flowing blood. Therefore, the blood flow velocity can be acquired via its relationship with the temperature difference. Compared to the ultrasound Doppler method and the laser Doppler method, the proposed method guarantees a more convenient operation in more flexible work sites. We also analyze the theory between heat transfer and laminar flow. Finally, several simulations are conducted, and the influence of the relevant factors (i.e., the number of blood vessels, the radius, etc.) corresponding to the simulation results is also discussed.
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20
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Fu Y, Ji H. Cytomorphology-based microchip with contour extraction processing for bioparticle analysis. Electrophoresis 2018; 40:1195-1201. [PMID: 30387160 DOI: 10.1002/elps.201800271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 10/15/2018] [Accepted: 10/28/2018] [Indexed: 11/08/2022]
Abstract
In this paper, we demonstrated an integrated digital image processing framework that is training-free for high throughput beads or biological cells detection and enumeration by the bead aggregation splitting algorithm. By making contour extraction processing, the aggregated beads can be clearly split for precise counting. It can be potentially embedded on-chip in a miniaturized medical equipment to automatically adjust illumination condition and de-noise. This study demonstrates that the existing hematological analysis can be updated from manual classification and counting by high-speed and precise machine-based programs.
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Affiliation(s)
- Yusheng Fu
- School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
| | - Hong Ji
- School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, 611731, P. R. China
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21
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Yao J, Zhu G, Zhao T, Takei M. Microfluidic device embedding electrodes for dielectrophoretic manipulation of cells-A review. Electrophoresis 2018; 40:1166-1177. [PMID: 30378130 DOI: 10.1002/elps.201800440] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 10/16/2018] [Accepted: 10/20/2018] [Indexed: 12/14/2022]
Abstract
Microfluidic device embedding electrodes realizes cell manipulation with the help of dielectrophoresis. Cell manipulation is an important technology for cell sorting and cell population purification. Till now, the theory of dielectrophoresis has been greatly developed. Microfluidic devices with various arrangements of electrodes have been reported from the beginning of the single non-uniform electric field to the later multiple physical fields. This paper reviews the research status of microfluidic device embedding electrodes for cell manipulation based on dielectrophoresis. Firstly, the working principle of dielectrophoresis is explained. Next, cell manipulation approaches based on dielectrophoresis are introduced. Then, different types of electrode arrangements in the microfluidic device for cell manipulation are discussed, including planar, multilayered and microarray dot electrodes. Finally, the future development trend of the dielectrophoresis with the help of microfluidic devices is prospected. With the rapid development of microfluidic technology, in the near future, high precision, high throughput, high efficiency, multifunctional, portable, economical and practical microfluidic dielectrophoresis will be widely used in the fields of biology, medicine, agriculture and so on.
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Affiliation(s)
- Jiafeng Yao
- College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China
| | - Guiping Zhu
- College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, P. R. China
| | - Tong Zhao
- Faculty of Mechanical and Precision Instrument Engineering, Xi`an University of Technology, Xi'an, 710048, P. R. China
| | - Masahiro Takei
- Department of Mechanical Engineering, Chiba University, Chiba, 263-0022, Japan
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22
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Zhu GP, Yao JF, Wu SH, Zhang XD. Actuation of adaptive liquid microlens droplet in microfluidic devices: A review. Electrophoresis 2018; 40:1148-1159. [PMID: 30255562 DOI: 10.1002/elps.201800297] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 09/18/2018] [Accepted: 09/20/2018] [Indexed: 11/07/2022]
Abstract
A significant growth of research on adaptive liquid lens is achieved over the past decades, and the field is still attracting increasing attentions, focusing on the transition from the current stage to the commercialized stage. The challenges faced are not limited to fabrication, material, small tuning range in focal lengths, additional control systems, limitations in special actuation methods and so on. In addition, the use of external driving parts or systems induce extra problem on bulky appearance, high cost, low reliability etc. Therefore, adaptive liquid lens will be an interesting research focus in both microfluidics and optofluidics science. This review attempts to summarize and focus on the droplet profile deformation under different driving mechanisms in tunable liquid microlens as well as the application in cameras, cell phone and so on. The driving techniques are generally categorized in terms of mechanisms and driving sources.
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Affiliation(s)
- Gui-Ping Zhu
- College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing, P. R. China
| | - Jia-Feng Yao
- College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, P. R. China
| | - Shi-Hua Wu
- College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing, P. R. China
| | - Xi-Dong Zhang
- College of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing, P. R. China
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23
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Automatic smartphone-based microfluidic biosensor system at the point of care. Biosens Bioelectron 2018; 110:78-88. [DOI: 10.1016/j.bios.2018.03.018] [Citation(s) in RCA: 173] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 02/28/2018] [Accepted: 03/09/2018] [Indexed: 12/18/2022]
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24
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Liu X, Yao J, Zhao T, Obara H, Cui Y, Takei M. Image Reconstruction Under Contact Impedance Effect in Micro Electrical Impedance Tomography Sensors. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2018; 12:623-631. [PMID: 29877825 DOI: 10.1109/tbcas.2018.2816946] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Contact impedance has an important effect on micro electrical impedance tomography (EIT) sensors compared to conventional macro sensors. In the present work, a complex contact impedance effect ratio ξ is defined to quantitatively evaluate the effect of the contact impedance on the accuracy of the reconstructed images by micro EIT. Quality of the reconstructed image under various ξ is estimated by the phantom simulation to find the optimum algorithm. The generalized vector sampled pattern matching (GVSPM) method reveals the best image quality and the best tolerance to ξ. Moreover, the images of yeast cells sedimentary distribution in a multilayered microchannel are reconstructed by the GVSPM method under various mean magnitudes of contact impedance effect ratio |ξ|. The result shows that the best image quality that has the smallest voltage error UE = 0.581 is achieved with measurement frequency f = 1 MHz and mean magnitude |ξ| = 26. In addition, the reconstructed images of cells distribution become improper while f < 10 kHz and mean value of |ξ| > 2400.
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25
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Tang SY, Qiao R, Yan S, Yuan D, Zhao Q, Yun G, Davis TP, Li W. Microfluidic Mass Production of Stabilized and Stealthy Liquid Metal Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800118. [PMID: 29682878 DOI: 10.1002/smll.201800118] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/27/2018] [Indexed: 05/20/2023]
Abstract
Functional nanoparticles comprised of liquid metals, such as eutectic gallium indium (EGaIn) and Galinstan, present exciting opportunities in the fields of flexible electronics, sensors, catalysts, and drug delivery systems. Methods used currently for producing liquid metal nanoparticles have significant disadvantages as they rely on both bulky and expensive high-power sonication probe systems, and also generally require the use of small molecules bearing thiol groups to stabilize the nanoparticles. Herein, an innovative microfluidics-enabled platform is described as an inexpensive, easily accessible method for the on-chip mass production of EGaIn nanoparticles with tunable size distributions in an aqueous medium. A novel nanoparticle-stabilization approach is reported using brushed polyethylene glycol chains with trithiocarbonate end-groups negating the requirements for thiol additives while imparting a "stealth" surface layer. Furthermore, a surface modification of the nanoparticles is demonstrated using galvanic replacement and conjugation with antibodies. It is envisioned that the demonstrated microfluidic technique can be used as an economic and versatile platform for the rapid production of liquid metal-based nanoparticles for a range of biomedical applications.
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Affiliation(s)
- Shi-Yang Tang
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Ruirui Qiao
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - Sheng Yan
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Dan Yuan
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Qianbin Zhao
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Guolin Yun
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Thomas P Davis
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
- Department of Chemistry, University of Warwick, Gibbet Hill, CV4 7AL, Coventry, UK
| | - Weihua Li
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
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26
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Fan N, Jiang H, Ye Z, Wu G, Kang Y, Wang Q, Ran X, Guo J, Zhang G, Wang G, Peng B. The Insertion Mechanism of a Living Cell Determined by the Stress Segmentation Effect of the Cell Membrane during the Tip-Cell Interaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703868. [PMID: 29717805 DOI: 10.1002/smll.201703868] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 03/11/2018] [Indexed: 06/08/2023]
Abstract
Atomic force microscopy probes are proved to be powerful tools to measure and manipulate the individual cell, providing potential applications for the controlled drug/protein delivery. However, the measured insertion efficiency varies dramatically from 20 to 80%, in some cases, the nanotip can never penetrate the cell membrane no matter how much force is applied to it. Thus, the insertion mechanism of a living cell during the tip-cell interaction must be thoroughly investigated before this technology comes into practical applications. In this work, a multistructural cell model is established to study the tip-membrane interaction. The simulation results show that the stress of the cell membrane can be divided into two stages by the stress segmentation point S. After point S, the stress of the cell membrane increases slightly and most of the indentation force is allocated to the cytoskeleton. This phenomenon is called "stress segmentation effect of the cell membrane," which confirms the hypothesis based on the experimental studies. Moreover, according to the experimental and numerical studies, the hypothesis of the stress segmentation effect also explains the reason that modifying the cell membrane or using the manmade sharpened nanotip can increase the insertion efficiency.
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Affiliation(s)
- Na Fan
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
| | - Hai Jiang
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
| | - Zhiyi Ye
- Key Laboratory of Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Guiyong Wu
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
| | - Yuejun Kang
- Institute for Clean Energy & Advanced Materials, Southwest University, Chongqing, 400715, P. R. China
| | - Qun Wang
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
| | - Xiaolin Ran
- Key Laboratory of Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Jian Guo
- School of Mechanical Engineering, University of South China, Hengyang, Hunan, 421001, P. R. China
| | - Guocheng Zhang
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
| | - Guixue Wang
- Key Laboratory of Biorheological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Bei Peng
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, P. R. China
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Huang X, Xu D, Chen J, Liu J, Li Y, Song J, Ma X, Guo J. Smartphone-based analytical biosensors. Analyst 2018; 143:5339-5351. [DOI: 10.1039/c8an01269e] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
With the rapid development, mass production, and pervasive distribution of smartphones in recent years, they have provided people with portable, cost-effective, and easy-to-operate platforms to build analytical biosensors for point-of-care (POC) applications and mobile health.
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Affiliation(s)
- Xiwei Huang
- Ministry of Education Key Lab of RF Circuits and Systems
- Hangzhou Dianzi University
- Hangzhou 310018
- P. R. China
| | - Dandan Xu
- State Key Lab of Advanced Welding and Joining
- Harbin Institute of Technology (Shenzhen)
- Shenzhen 518055
- P. R. China
- Ministry of Education Key Lab of Micro-systems and Micro-structures Manufacturing
| | - Jin Chen
- Ministry of Education Key Lab of RF Circuits and Systems
- Hangzhou Dianzi University
- Hangzhou 310018
- P. R. China
| | - Jixuan Liu
- Ministry of Education Key Lab of RF Circuits and Systems
- Hangzhou Dianzi University
- Hangzhou 310018
- P. R. China
| | - Yangbo Li
- Ministry of Education Key Lab of RF Circuits and Systems
- Hangzhou Dianzi University
- Hangzhou 310018
- P. R. China
| | - Jing Song
- School of Economics and Management
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Xing Ma
- State Key Lab of Advanced Welding and Joining
- Harbin Institute of Technology (Shenzhen)
- Shenzhen 518055
- P. R. China
- Ministry of Education Key Lab of Micro-systems and Micro-structures Manufacturing
| | - Jinhong Guo
- School of Communication and Information Engineering
- University of Electronic Science and Technology of China
- Chengdu 611731
- P. R. China
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Huang X, Farooq U, Chen J, Ge Y, Gao H, Su J, Wang X, Dong S, Luo JK. A Surface Acoustic Wave Pumped Lensless Microfluidic Imaging System for Flowing Cell Detection and Counting. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2017; 11:1478-1487. [PMID: 28866597 DOI: 10.1109/tbcas.2017.2732828] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The future point-of-care diagnostics requires miniaturizing the existing bulky and expensive bioanalysis instruments, where lab-on-CMOS-chip-based technology can provide a promising solution. In this paper, we presented a surface acoustic wave (SAW) pumped lensless microfluidic imaging system for flowing cell detection and counting. Different from the previous lensless systems, which employ external bulky syringe pump for cell driven, the developed system directly integrates the SAW pump on the CMOS image sensor chip to drive the cell-containing microfluid. Moreover, an efficient temporal-differencing-based motion detection algorithm is proposed for continuous flowing cell detection and counting. Experimental results show that the SAW pump can drive the cells to flow at different driven powers, and also can keep the channel temperature below 40 °C so as not to harm the cells. The human bone marrow stromal cells flowing in the microfluidic channel can be automatically detected and counted with a low statistical error rate of -6.53%. The developed system thereby is competitive for point-of-care cell detection and counting application.
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Yao J, Sugawara M, Obara H, Mizutani T, Takei M. Distinct Motion of GFP-Tagged Histone Expressing Cells Under AC Electrokinetics in Electrode-Multilayered Microfluidic Device. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2017; 11:1450-1458. [PMID: 28809711 DOI: 10.1109/tbcas.2017.2729584] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The distinct motion of GFP-tagged histone expressing cells (Histone-GFP type cells) has been investigated under ac electrokinetics in an electrode-multilayered microfluidic device as compared with Wild type cells and GFP type cells in terms of different intracellular components. The Histone-GFP type cells were modified by the transfection of green fluorescent protein-fused histone from the human lung fibroblast cell line. The velocity of the Histone-GFP type cells obtained by particle tracking velocimetry technique is faster than Wild type cells by 24.9% and GFP type cells by 57.1%. This phenomenon is caused by the more amount of proteins in the intracellular of single Histone-GFP type cell than that of the Wild type and GFP type cells. The more amount of proteins in the Histone-GFP type cells corresponds to a lower electric permittivity ϵc of the cells, which generates a lower dielectrophoretic force exerting on the cells. The velocity of Histone-GFP type cells is well agreed with Eulerian-Lagrangian two-phase flow simulation by 4.2% mean error, which proves that the fluid motion driven by thermal buoyancy and electrothermal force dominates the direction of cells motion, while the distinct motion of Histone-GFP type cells is caused by dielectrophoretic force. The fluid motion does not generate a distinct drag motion for Histone-GFP type cells because the Histone-GFP type cells have the same size to the Wild type and GFP type cells. These results clarified the mechanism of cells motion in terms of intracellular components, which helps to improve the cell manipulation efficiency with electrokinetics.
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30
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Ma Z, Zhou Y, Collins DJ, Ai Y. Fluorescence activated cell sorting via a focused traveling surface acoustic beam. LAB ON A CHIP 2017; 17:3176-3185. [PMID: 28815231 DOI: 10.1039/c7lc00678k] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Fluorescence activated cell sorting (FACS) has become an essential technique widely exploited in biological studies and clinical applications. However, current FACS systems are quite complex, expensive, bulky, and pose potential sample contamination and biosafety issues due to the generation of aerosols in an open environment. Microfluidic technology capable of precise cell manipulation has great potential to reinvent and miniaturize conventional FACS systems. In this work, we demonstrate a benchtop scale FACS system that makes use of a highly focused traveling surface acoustic wave beam to sort out micron-sized particles and biological cells upon fluorescence interrogation at ∼kHz rates. The highly focused acoustic wave beam has a width of ∼50 μm that enables highly accurate sorting of individual particles and cells. We have applied our acoustic FACS system to isolate fluorescently labeled MCF-7 breast cancer cells from diluted whole blood samples with the purity of sorted MCF-7 cells higher than 86%. The cell viability before and after acoustic sorting is higher than 95%, indicating excellent biocompatibility that should enable a variety of cell sorting applications in biomedical research.
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Affiliation(s)
- Zhichao Ma
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore 487372, Singapore.
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31
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Herringbone-like hydrodynamic structures in microchannels: A CFD model to evaluate the enhancement of surface binding. Med Eng Phys 2017; 48:62-67. [PMID: 28802780 DOI: 10.1016/j.medengphy.2017.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/17/2017] [Accepted: 07/12/2017] [Indexed: 10/19/2022]
Abstract
Selected adsorption efficiency of a molecule in solution in a microchannel is strongly influenced by the convective/diffusive mass transport phenomena that supply the target molecule to the adsorption surface. In a standard microchannel with a rectangular cross section, laminar flow regime limits the fluid mixing, thus suggesting that mass transport conditions can be improved by the introduction of herringbone-like structures. Tuning of these geometrical patterns increases the concentration gradient of the target molecule at the adsorption surface. A computational fluid dynamic (CFD) study was performed to evaluate the relation between the geometrical herringbone patterns and the concentration gradient improvement in a 14 mm long microchannel. The results show that the inhomogeneity of the concentration gradient can provide an improved and localized adsorption under specific geometrical features, which can be tuned in order to adapt the adsorption pattern to the specific assay requirements.
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32
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Ohtomo T, Sudo S, Otsuka K. Detection and counting of a submicrometer particle in liquid flow by self-mixing microchip Yb:YAG laser velocimetry. APPLIED OPTICS 2016; 55:7574-7582. [PMID: 27661585 DOI: 10.1364/ao.55.007574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We observed intermittent modulation by scattered light from a single submicrometer particle moving in the flow channel using a self-mixing microchip Yb:YAG laser Doppler velocimeter (LDV) under lateral beam access. The Doppler-shift frequency chirping (i.e., velocity change) was identified in accordance with a particle passage through the beam focus. Single particle counting, which obeys the Poisson distribution, was performed successfully over a long period of time. The experimental results have been reproduced by a numerical simulation. The LDV signal was increased over 20 dB for a 202-nm particle without chirping by collinear beam access with the laser beam axis aligned along the flow direction.
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33
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Mei L, Chou TH, Cheng YS, Huang MJ, Yeh LH, Qian S. Electrophoresis of pH-regulated nanoparticles: impact of the Stern layer. Phys Chem Chem Phys 2015; 18:9927-34. [PMID: 26509958 DOI: 10.1039/c5cp05728k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A multi-ion model taking into account the Stern layer effect and the surface chemistry reactions is developed for the first time to investigate the surface charge properties and electrophoresis of pH-regulated silica nanoparticles (NPs). The applicability of the model is validated by comparing its prediction to the experimental data of the electrophoretic mobility of silica NPs available from the literature. Results show that if the particle size is fixed, the Stern layer effect on the surface charge properties of the NP is notable at high pH and background salt concentration; however, that effect on the particle mobility is significant when pH is around neutrality and the salt concentration is medium high (ca. 0.07 M) because of the double-layer polarization effect. Moreover, if pH and the background salt concentration are fixed, the Stern layer effect on the zeta potential and electrophoretic mobility of the NP becomes more significant for smaller particle size. Neglecting the Stern layer effect could result in the overestimation of the zeta potential, surface charge density, and electrophoretic mobility of a NP on the order of several times.
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Affiliation(s)
- Lanju Mei
- Institute of Micro/Nanotechnology, Old Dominion University, Norfolk, VA 23529, USA.
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