1
|
Ahasan K, Schnoebelen NJ, Shrotriya P, Kingston TA. Continuous Sampling of Aerosolized Particles Using Stratified Two-Phase Microfluidics. ACS Sens 2024. [PMID: 38848499 DOI: 10.1021/acssensors.4c00042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2024]
Abstract
Health and security concerns have made it essential to develop integrated, continuous collection and sensing platforms that are compact and capable of real-time detection. In this study, we numerically investigate the flow physics associated with the single-step collection and enrichment of aerosolized polystyrene microparticles into a flowing liquid using a stratified air-water flow in a U-shaped microchannel. We validate our simulation results by comparing them to experimental data from the literature. Additionally, we fabricate an identical microfluidic device using PDMS-based soft lithography and test it to corroborate the previously published experimental data. Diversion and entrapment efficiencies are used as evaluation metrics, both of which increase with increasing particle diameter and superficial air inlet velocity. Overall, our ANSYS Fluent two-dimensional (2D) and three-dimensional (3D) multiphase flow simulations exhibit a good agreement with our experimental data and data in the literature (average deviation of ∼11%) in terms of diversion efficiency. Simulations also found the entrapment efficiency to be lower than the diversion efficiency, indicating discrepancies in the literature in terms of captured particles. The effect of the Dean force on the flow physics was also investigated using 3D simulations. We found that the effect of the Dean flow was more dominant relative to the centrifugal force on the smaller particles (e.g., 0.65 μm) compared to the larger particles (e.g., 2.1 μm). Increasing the superficial air inlet velocity also increases the effect of the centrifugal forces relative to the Dean forces. Overall, this experimentally validated multiphase model decouples and investigates the multiple and simultaneous forces on aerosolized particles flowing through a curved microchannel, which is crucial for designing more efficient capture devices. Once integrated with a microfluidic-based biosensor, this stratified flow-based microfluidic biothreat capture platform should deliver continuous sensor-ready enriched biosamples for real-time sensing.
Collapse
Affiliation(s)
- Kawkab Ahasan
- Center for Multiphase Flow Research and Education, Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Nicholas J Schnoebelen
- Center for Multiphase Flow Research and Education, Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Pranav Shrotriya
- Center for Multiphase Flow Research and Education, Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Todd A Kingston
- Center for Multiphase Flow Research and Education, Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, United States
| |
Collapse
|
2
|
Zhou X, Liu X, Zhao H, Guo G, Jiang X, Liu S, Sun X, Yang H. Research advances in microfluidic collection and detection of virus, bacterial, and fungal bioaerosols. Mikrochim Acta 2024; 191:132. [PMID: 38351367 DOI: 10.1007/s00604-024-06213-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/14/2024] [Indexed: 02/16/2024]
Abstract
Bioaerosols are airborne suspensions of fine solid or liquid particles containing biological substances such as viruses, bacteria, cellular debris, fungal spores, mycelium, and byproducts of microbial metabolism. The global Coronavirus disease 2019 (COVID-19) pandemic and the previous emergence of severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), and influenza have increased the need for reliable and effective monitoring tools for bioaerosols. Bioaerosol collection and detection have aroused considerable attention. Current bioaerosol sampling and detection techniques suffer from long response time, low sensitivity, and high costs, and these drawbacks have forced the development of novel monitoring strategies. Microfluidic technique is considered a breakthrough for high performance analysis of bioaerosols. In recent years, several emerging methods based on microfluidics have been developed and reported for collection and detection of bioaerosols. The unique advantages of microfluidic technique have enabled the integration of bioaerosol collection and detection, which has a higher efficiency over conventional methods. This review focused on the research progress of bioaerosol collection and detection methods based on microfluidic techniques, with special attention on virus aerosols and bacterial aerosols. Different from the existing reviews, this work took a unique perspective of the targets to be collected and detected in bioaerosols, which would provide a direct index of bioaerosol categories readers may be interested in. We also discussed integrated microfluidic monitoring system for bioaerosols. Additionally, the application of bioaerosol detection in biomedicine was presented. Finally, the current challenges in the field of bioaerosol monitoring are presented and an outlook given of future developments.
Collapse
Affiliation(s)
- Xinyue Zhou
- Department of Respiratory Medicine, The Fourth Hospital of China Medical University, No. 4, Chongshan East Road, Huanggu District, Shenyang, 110032, Liaoning, China
| | - Xin Liu
- Department of Respiratory Medicine, The Fourth Hospital of China Medical University, No. 4, Chongshan East Road, Huanggu District, Shenyang, 110032, Liaoning, China
| | - Haiyang Zhao
- Teaching Center for Basic Medical Experiment, China Medical University, No.77, Puhe Road, Shenyang, 110122, Liaoning Province, China
| | - Guanqi Guo
- Teaching Center for Basic Medical Experiment, China Medical University, No.77, Puhe Road, Shenyang, 110122, Liaoning Province, China
| | - Xiran Jiang
- School of Intelligent Medicine, China Medical University, No.77, Puhe Road, Shenyang, 110122, Liaoning Province, China.
| | - Shuo Liu
- Department of Respiratory Medicine, The Fourth Hospital of China Medical University, No. 4, Chongshan East Road, Huanggu District, Shenyang, 110032, Liaoning, China.
| | - Xiaoting Sun
- School of Forensic Medicine, China Medical University, No.77, Puhe Road, Shenyang, 110122, Liaoning Province, China.
| | - Huazhe Yang
- School of Intelligent Medicine, China Medical University, No.77, Puhe Road, Shenyang, 110122, Liaoning Province, China.
| |
Collapse
|
3
|
Yang N, Li T, Dong S, Zhang S, Jia Y, Mao H, Zhang Z, Zhang F, Pan X, Zhang X, Dong Z. Detection of airborne pathogens with single photon counting and a real-time spectrometer on microfluidics. LAB ON A CHIP 2022; 22:4995-5007. [PMID: 36440701 DOI: 10.1039/d2lc00934j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The common practice for monitoring pathogenic bioaerosols is to collect bioaerosols from air and then detect them, which lacks timeliness and accuracy. In order to improve the detection speed, here we demonstrate an innovative airflow-based optical detection method for directly identifying aerosol pathogens, and built a microfluidic-based counter composite spectrometer detection platform, which simplifies sample preparation and collection detection from two steps to one step. The method is based on principal component analysis and partial least squares discriminant analysis for particle species identification and dynamic transmission spectroscopy analysis, and single-photon measurement is used for particle counting. Compared with traditional microscopic counting and identification methods, the particle counting accuracy is high, the standard deviation is small, and the counting accuracy exceeds 92.2%. The setup of dynamic transmission spectroscopy analysis provides high-precision real-time particle identification with an accuracy rate of 93.75%. As the system is further refined, we also foresee potential applications of this method in agricultural disease control, environmental control, and infectious disease control in aerosol pathogen detection.
Collapse
Affiliation(s)
- Ning Yang
- School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212000, China
| | - Taiwei Li
- School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212000, China
| | - Sizhe Dong
- State-Key Laboratory of Analog and Mixed-Signal VLSI, Faculty of Science and Technology - ECE, Institute of Microelectronics, University of Macau, Macau 999078, China.
| | - Suliang Zhang
- School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212000, China
| | - Yanwei Jia
- State-Key Laboratory of Analog and Mixed-Signal VLSI, Faculty of Science and Technology - ECE, Institute of Microelectronics, University of Macau, Macau 999078, China.
| | - Hanping Mao
- School of Agricultural Engineering, Jiangsu University, Zhenjiang 212000, China.
| | - Zhen Zhang
- School of Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212000, China.
| | - Fu Zhang
- College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Xiaoqing Pan
- Jiangsu Academy of Agricultural Sciences, Nanjing 210000, China
| | - Xiaodong Zhang
- School of Agricultural Engineering, Jiangsu University, Zhenjiang 212000, China.
| | - Zining Dong
- School of Environmental and Safety Engineering, Jiangsu University, Zhenjiang 212000, China.
| |
Collapse
|
4
|
Wang J, Yang L, Wang H, Wang L. Application of Microfluidic Chips in the Detection of Airborne Microorganisms. MICROMACHINES 2022; 13:1576. [PMID: 36295928 PMCID: PMC9611547 DOI: 10.3390/mi13101576] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 09/14/2022] [Accepted: 09/17/2022] [Indexed: 06/16/2023]
Abstract
The spread of microorganisms in the air, especially pathogenic microorganisms, seriously affects people's normal life. Therefore, the analysis and detection of airborne microorganisms is of great importance in environmental detection, disease prevention and biosafety. As an emerging technology with the advantages of integration, miniaturization and high efficiency, microfluidic chips are widely used in the detection of microorganisms in the environment, bringing development vitality to the detection of airborne microorganisms, and they have become a research highlight in the prevention and control of infectious diseases. Microfluidic chips can be used for the detection and analysis of bacteria, viruses and fungi in the air, mainly for the detection of Escherichia coli, Staphylococcus aureus, H1N1 virus, SARS-CoV-2 virus, Aspergillus niger, etc. The high sensitivity has great potential in practical detection. Here, we summarize the advances in the collection and detection of airborne microorganisms by microfluidic chips. The challenges and trends for the detection of airborne microorganisms by microfluidic chips was also discussed. These will support the role of microfluidic chips in the prevention and control of air pollution and major outbreaks.
Collapse
Affiliation(s)
- Jinpei Wang
- College of Medicine, Xi’an International University, Xi’an 710077, China
- Engineering Research Center of Personalized Anti-Aging Health Product Development and Transformation, Universities of Shaanxi Province, Xi’an 710077, China
- Applied Research Center for Life Science, Xi’an International University, Xi’an 710077, China
| | - Lixia Yang
- College of Medicine, Xi’an International University, Xi’an 710077, China
- Engineering Research Center of Personalized Anti-Aging Health Product Development and Transformation, Universities of Shaanxi Province, Xi’an 710077, China
- Applied Research Center for Life Science, Xi’an International University, Xi’an 710077, China
| | - Hanghui Wang
- College of Medicine, Xi’an International University, Xi’an 710077, China
- Xi’an International Medical Center Hospital, Xi’an 710100, China
| | - Lin Wang
- College of Medicine, Xi’an International University, Xi’an 710077, China
- Engineering Research Center of Personalized Anti-Aging Health Product Development and Transformation, Universities of Shaanxi Province, Xi’an 710077, China
- Applied Research Center for Life Science, Xi’an International University, Xi’an 710077, China
| |
Collapse
|
5
|
Ezrre S, Reyna MA, Anguiano C, Avitia RL, Márquez H. Lab-on-a-Chip Platforms for Airborne Particulate Matter Applications: A Review of Current Perspectives. BIOSENSORS 2022; 12:191. [PMID: 35448251 PMCID: PMC9024784 DOI: 10.3390/bios12040191] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/12/2022] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Lab-on-a-Chip (LoC) devices are described as versatile, fast, accurate, and low-cost platforms for the handling, detection, characterization, and analysis of a wide range of suspended particles in water-based environments. However, for gas-based applications, particularly in atmospheric aerosols science, LoC platforms are rarely developed. This review summarizes emerging LoC devices for the classification, measurement, and identification of airborne particles, especially those known as Particulate Matter (PM), which are linked to increased morbidity and mortality levels from cardiovascular and respiratory diseases. For these devices, their operating principles and performance parameters are introduced and compared while highlighting their advantages and disadvantages. Discussing the current applications will allow us to identify challenges and determine future directions for developing more robust LoC devices to monitor and analyze airborne PM.
Collapse
Affiliation(s)
- Sharon Ezrre
- Instituto de Ingeniería, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico;
| | - Marco A. Reyna
- Instituto de Ingeniería, Universidad Autónoma de Baja California (UABC), Mexicali 21100, Mexico;
| | - Citlalli Anguiano
- Facultad de Ingeniería, Universidad Autónoma de Baja California (UABC), Mexicali 21280, Mexico; (C.A.); (R.L.A.)
| | - Roberto L. Avitia
- Facultad de Ingeniería, Universidad Autónoma de Baja California (UABC), Mexicali 21280, Mexico; (C.A.); (R.L.A.)
| | - Heriberto Márquez
- Departamento de Óptica, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Ensenada 22860, Mexico;
| |
Collapse
|
6
|
Wang L, Qi W, Liu Y, Essien D, Zhang Q, Lin J. Recent Advances on Bioaerosol Collection and Detection in Microfluidic Chips. Anal Chem 2021; 93:9013-9022. [PMID: 34160193 DOI: 10.1021/acs.analchem.1c00908] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bioaerosols containing pathogenic microorganisms have posed a great threat to human and animal health. Effective monitoring of bioaerosols containing pathogenic viruses and bacteria is of great significance to prevent and control infectious diseases. This Feature summarizes recent advances on bioaerosol collection and detection based on microfluidic chips. Besides, the challenges and trends for bioaerosol collection and detection were also discussed.
Collapse
Affiliation(s)
- Lei Wang
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China.,Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba R3T 5V6, Canada
| | - Wuzhen Qi
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Yuanjie Liu
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| | - Desmond Essien
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba R3T 5V6, Canada
| | - Qiang Zhang
- Department of Biosystems Engineering, University of Manitoba, Winnipeg, Manitoba R3T 5V6, Canada
| | - Jianhan Lin
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing 100083, China
| |
Collapse
|
7
|
Kalyan S, Torabi C, Khoo H, Sung HW, Choi SE, Wang W, Treutler B, Kim D, Hur SC. Inertial Microfluidics Enabling Clinical Research. MICROMACHINES 2021; 12:257. [PMID: 33802356 PMCID: PMC7999476 DOI: 10.3390/mi12030257] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/20/2021] [Accepted: 03/01/2021] [Indexed: 02/06/2023]
Abstract
Fast and accurate interrogation of complex samples containing diseased cells or pathogens is important to make informed decisions on clinical and public health issues. Inertial microfluidics has been increasingly employed for such investigations to isolate target bioparticles from liquid samples with size and/or deformability-based manipulation. This phenomenon is especially useful for the clinic, owing to its rapid, label-free nature of target enrichment that enables further downstream assays. Inertial microfluidics leverages the principle of inertial focusing, which relies on the balance of inertial and viscous forces on particles to align them into size-dependent laminar streamlines. Several distinct microfluidic channel geometries (e.g., straight, curved, spiral, contraction-expansion array) have been optimized to achieve inertial focusing for a variety of purposes, including particle purification and enrichment, solution exchange, and particle alignment for on-chip assays. In this review, we will discuss how inertial microfluidics technology has contributed to improving accuracy of various assays to provide clinically relevant information. This comprehensive review expands upon studies examining both endogenous and exogenous targets from real-world samples, highlights notable hybrid devices with dual functions, and comments on the evolving outlook of the field.
Collapse
Affiliation(s)
- Srivathsan Kalyan
- Department of Mechanical Engineering, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA; (S.K.); (C.T.); (H.K.); (S.-E.C.)
| | - Corinna Torabi
- Department of Mechanical Engineering, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA; (S.K.); (C.T.); (H.K.); (S.-E.C.)
| | - Harrison Khoo
- Department of Mechanical Engineering, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA; (S.K.); (C.T.); (H.K.); (S.-E.C.)
| | - Hyun Woo Sung
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA;
| | - Sung-Eun Choi
- Department of Mechanical Engineering, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA; (S.K.); (C.T.); (H.K.); (S.-E.C.)
| | - Wenzhao Wang
- Department of Biomedical Engineering, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA; (W.W.); (B.T.)
| | - Benjamin Treutler
- Department of Biomedical Engineering, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA; (W.W.); (B.T.)
| | - Dohyun Kim
- Department of Mechanical Engineering, Myongji University, Yongin-si 17508, Korea
| | - Soojung Claire Hur
- Department of Mechanical Engineering, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA; (S.K.); (C.T.); (H.K.); (S.-E.C.)
- Institute for NanoBioTechnology, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA
- Department of Oncology, Johns Hopkins University, 600 N Wolfe St, Baltimore, MD 21205, USA
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, 401 N Broadway, Baltimore, MD 21231, USA
| |
Collapse
|
8
|
Bhardwaj SK, Bhardwaj N, Kumar V, Bhatt D, Azzouz A, Bhaumik J, Kim KH, Deep A. Recent progress in nanomaterial-based sensing of airborne viral and bacterial pathogens. ENVIRONMENT INTERNATIONAL 2021; 146:106183. [PMID: 33113463 DOI: 10.1016/j.envint.2020.106183] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 10/03/2020] [Accepted: 10/04/2020] [Indexed: 05/25/2023]
Abstract
Airborne pathogens are small microbes that can cause a multitude of diseases (e.g., the common cold, flu, asthma, anthrax, tuberculosis, botulism, and pneumonia). As pathogens are transmitted from infected hosts via a number of routes (e.g., aerosolization, sneezing, and coughing), there is a great demand to accurately monitor their presence and behavior. Despite such need, conventional detection methods (e.g., colony counting, immunoassays, and various molecular techniques) generally suffer from a number of demerits (e.g., complex, time-consuming, and labor-intensive nature). To help overcome such limitations, nanomaterial-based biosensors have evolved as alternative candidates to realize portable, rapid, facile, and direct on-site identification of target microbes. In this review, nano-biosensors developed for the detection of airborne pathogens are listed and discussed in reference to conventional options. The prospects for the development of advanced nano-biosensors with enhanced accuracy and portability are also discussed.
Collapse
Affiliation(s)
- Sanjeev K Bhardwaj
- Department of Nanomaterials and Application Technology, Center of Innovative and Applied Bioprocessing, Sector 81 (Knowledge City), S.A.S. Nagar 140306, Punjab, India
| | - Neha Bhardwaj
- Department of Biotechnology, University Institute of Engineering and Technology (UIET), Panjab University, Chandigarh 160025, India
| | - Vanish Kumar
- National Agri-Food Biotechnology Institute, S.A.S. Nagar 140306, Punjab, India
| | - Deepanshu Bhatt
- Central Scientific Instruments Organisation, Sector 30 C, Chandigarh 160030, India
| | - Abdelmonaim Azzouz
- Department of Chemistry, Faculty of Science, University of Abdelmalek Essaadi, B.P. 2121, M'Hannech II, 93002 Tétouan, Morocco
| | - Jayeeta Bhaumik
- Department of Nanomaterials and Application Technology, Center of Innovative and Applied Bioprocessing, Sector 81 (Knowledge City), S.A.S. Nagar 140306, Punjab, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 133-791, Republic of Korea.
| | - Akash Deep
- Central Scientific Instruments Organisation, Sector 30 C, Chandigarh 160030, India.
| |
Collapse
|
9
|
Kim HR, An S, Hwang J. Aerosol-to-Hydrosol Sampling and Simultaneous Enrichment of Airborne Bacteria For Rapid Biosensing. ACS Sens 2020; 5:2763-2771. [PMID: 32493010 DOI: 10.1021/acssensors.0c00555] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Rapid monitoring of biological particulate matter (Bio-PM, bioaerosols) requires an enrichment technique for concentrating the Bio-PM dispersed in the air into a small volume of liquid. In this study, an electrostatic air sampler is employed to capture aerosolized test bacteria in a carrier liquid (aerosol-to-hydrosol (ATH) enrichment). Simultaneously, the captured bacteria are carried into a fluid channel for hydrosol-to-hydrosol (HTH) enrichment with Concanavalin A coated magnetic particles (CMPs). The ATH enrichment capacity of the air sampler was evaluated with an aerosol particle counter for the following test bacteria: Staphylococcus aureus, Bacillus cereus, Escherichia coli, and Acinetobacter baumannii. Then, the HTH enrichment capacity for the ATH-collected sample was evaluated using the colony-counting method, scanning electron microscopy based image analysis, fluorescence microscopy, electrical current measurements, and real-time quantitative polymerase chain reaction (qPCR). The ATH and HTH enrichment capacities for the given operation conditions were up to 80 000 and 14.9, respectively, resulting in a total enrichment capacity of up to 1.192 × 106. Given that air-to-liquid enrichment required to prepare detectable bacterial samples for real-time qPCR in field environments is of the order of at least 106, our method can be used to prepare a detectable sample from low-concentration airborne bacteria in the field and significantly reduce the time required for Bio-PM monitoring because of its enrichment capacity.
Collapse
Affiliation(s)
- Hyeong Rae Kim
- School of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Sanggwon An
- School of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jungho Hwang
- School of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
| |
Collapse
|
10
|
Ma X, Fang Z, Li F, Hu K. Determination of performance-parameter design and impact factors of sampling efficiency for bioaerosol cyclones. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1797529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Affiliation(s)
- Xuezheng Ma
- Department of Aerobiology, Institute of Health Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Zhiqiang Fang
- Department of Aerobiology, Institute of Health Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Fanshuang Li
- Department of Aerobiology, Institute of Health Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Kongxin Hu
- Department of Aerobiology, Institute of Health Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, China
| |
Collapse
|
11
|
Kwon HB, Yoo SJ, Hong US, Kim K, Han J, Kim MK, Kang DH, Hwang J, Kim YJ. MEMS-based condensation particle growth chip for optically measuring the airborne nanoparticle concentration. LAB ON A CHIP 2019; 19:1471-1483. [PMID: 30896011 DOI: 10.1039/c9lc00035f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To monitor airborne nanoparticles at a particular point of interest sensitively and accurately, we developed a compact and inexpensive but highly-precise nanoparticle detection system. The proposed system, based on nucleation light-scattering, consists of two components: a microelectromechanical system (MEMS)-based particle growth chip that grows nanoparticles to micro-sized droplets through condensation and a miniaturized optical particle counter (mini-OPC) that detects individual grown droplets using a light-scattering method. To minimize the dimensions and cost of this system, all elements of the particle growth chip were integrated onto a glass slide through simple photolithography and 3D printing. Moreover, a passive cooling technique was adopted, which eliminated the need for an active cooling system. Thus, our system was much more compact, inexpensive, and power-efficient than conventional nanoparticle detection instruments. Through quantitative experiments using Ag nanoparticles in the size range of 5 to 70 nm, it was found that our system could count extremely small nanoparticles (12.4 nm) by growing them to micrometer-sized droplets. Furthermore, our system could provide an accurate number concentration of nanoparticles (the maximum difference was within 15% compared to the reference instrument), regardless of high (3500 N cm-3) and low (0.05 N cm-3) concentration environments. These results indicate that our system can be applied successfully to the monitoring of nanoparticles in various kinds of fields including not only indoor and outdoor environments but also high-tech industries utilizing cleanrooms, air filtration systems, etc.
Collapse
Affiliation(s)
- Hong-Beom Kwon
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
| | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Cho YS, Hong SC, Choi J, Jung JH. Development of an automated wet-cyclone system for rapid, continuous and enriched bioaerosol sampling and its application to real-time detection. SENSORS AND ACTUATORS. B, CHEMICAL 2019; 284:525-533. [PMID: 32288254 PMCID: PMC7111469 DOI: 10.1016/j.snb.2018.12.155] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 12/24/2018] [Accepted: 12/29/2018] [Indexed: 05/25/2023]
Abstract
We present a novel bioaerosol sampling system based on a wet-cyclone for real-time and continuous monitoring of airborne microorganisms. The Automated and Real-time Bioaerosol Sampler based on Wet-cyclone (ARBSW) continuously collects bioaerosols in a liquid medium and delivers the samples to a sensing device using a wireless remote control system. Based on a high air-to-liquid-flow-rate ratio (∼ 1.4 × 105) and a stable liquid thin film within a wet-cyclone, the system achieved excellent sampling performance as indicated by the high concentration and viability of bioaerosols (> 95% collection efficiency for > 0.5-μm-diameter particles, > 95% biological collection efficiency for Staphylococcus epidermidis and Micrococcus luteus). Furthermore, the continuous and real-time sampling performance of the ARBSW system under test-bed conditions and during a field test demonstrated that the ARBSW is capable of continuously monitoring bioaerosols in real time with high sensitivity. Therefore, the ARBSW shows promise for continuous real-time monitoring of bioaerosols and will facilitate the management of bioaerosol-related health and environmental issues.
Collapse
Affiliation(s)
- Yu Sung Cho
- Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Green School, Korea University, Seoul 02841, Republic of Korea
| | - Seung Chan Hong
- Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jeongan Choi
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Jae Hee Jung
- Center for Environment, Health and Welfare Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Green School, Korea University, Seoul 02841, Republic of Korea
- Division of Energy & Environment Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Republic of Korea
| |
Collapse
|
13
|
Kwon HB, Kim HL, Hong US, Yoo SJ, Kim K, Han J, Kim MK, Hwang J, Kim YJ. Particle size spectrometer using inertial classification and electrical measurement techniques for real-time monitoring of particle size distribution. LAB ON A CHIP 2018; 18:2642-2652. [PMID: 30069567 DOI: 10.1039/c8lc00429c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
To achieve real-time monitoring of aerodynamic submicron particle size distributions at a point-of-interest, we developed a high-performance particle size spectrometer that is compact, low-cost, and portable. The present system consists of four key components: a unipolar mini-discharger for electrically charging particles, an inertial size-separator for classifying charged particles into five size fractions in terms of their aerodynamic sizes, a portable multi-channel electrometer for detecting femto-ampere currents carried by charged particles at each stage, and a retrieval algorithm for converting the current data into a smooth particle size distribution. The unipolar mini-discharger and inertial size separator were quantitatively characterised by using standard polystyrene latex (PSL) particles. The experimentally determined cut-off diameters at each stage in the inertial size separator were 1.17, 0.94, 0.71, 0.54, and 0.23 μm, respectively. Then, the system was compared with a commercial reference aerodynamic particle sizer (APS) in the environment where the number concentration and the average size of TiO2 particles were changing. The present system resolved peak size and geometric standard deviation of particles to within 11.2%, and 6.3%, respectively, indicating that the system can be used to accurately monitor submicron particle size distributions in real time.
Collapse
Affiliation(s)
- Hong-Beom Kwon
- School of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
| | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Choi J, Hong SC, Kim W, Jung JH. Highly Enriched, Controllable, Continuous Aerosol Sampling Using Inertial Microfluidics and Its Application to Real-Time Detection of Airborne Bacteria. ACS Sens 2017; 2:513-521. [PMID: 28723191 DOI: 10.1021/acssensors.6b00753] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We report a novel microfluidic technique for sampling of aerosols into liquids. The two-phase fluid, sampling air and collecting liquid, forms a stratified flow in the curved microchannel. By passing fluids through the curved region, the particles are transferred from air into the liquid phase by the particle centrifugal and drag forces. This microfluidic-based aerosol-into-liquid sampling system, called the MicroSampler, is driven by particle inertial differences. To evaluate the physical particle collection efficiency of the MicroSampler, we used standard polystyrene-latex (PSL) particles ranging in size from 0.6 to 2.1 μm and measured particle concentrations upstream and downstream of the MicroSampler with an aerodynamic particle sizer. The cutoff diameter of particle collection was selected controlling the air flow velocity (microfluidic air flow of 0.6 L/min showed a particle collection efficiency of ∼98% at a particle diameter of 1 μm), and continuous enriched particle sampling was possible for real-time postprocessing application. With regard to biological collection efficiency, the MicroSampler showed superior microbial recovery (Staphylococcus epidermidis) compared to the conventional BioSampler technique. These results indicate that our MicroSampler can be used as a portable, cost-effective, simple, and continuous airborne microorganism collector for applications in real-time bioaerosol detection.
Collapse
Affiliation(s)
- Jeongan Choi
- Center
for Environment, Health, and Welfare Research, KIST School, Korea University of Science and Technology (UST), Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Department
of Mechanical Science and Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Seung Chan Hong
- Center
for Environment, Health, and Welfare Research, KIST School, Korea University of Science and Technology (UST), Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Department
of Mechanical and Aerospace Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Woojin Kim
- Technology Convergence R&BD Group, Korea Institute of Industrial Technology, Daegu 42994, Republic of Korea
| | - Jae Hee Jung
- Center
for Environment, Health, and Welfare Research, KIST School, Korea University of Science and Technology (UST), Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Green School, Korea University, Seoul 02841, Republic of Korea
| |
Collapse
|
15
|
Liu Q, Zhang Y, Jing W, Liu S, Zhang D, Sui G. First airborne pathogen direct analysis system. Analyst 2016; 141:1637-40. [DOI: 10.1039/c5an02367j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This is the first portable “sample to answer” system for the rapid detection of pathogenic bacteria in air.
Collapse
Affiliation(s)
- Qi Liu
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3)
- Department of Environmental Science & Engineering
- Fudan University
- Shanghai
- China
| | - Yuxiao Zhang
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3)
- Department of Environmental Science & Engineering
- Fudan University
- Shanghai
- China
| | - Wenwen Jing
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3)
- Department of Environmental Science & Engineering
- Fudan University
- Shanghai
- China
| | - Sixiu Liu
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3)
- Department of Environmental Science & Engineering
- Fudan University
- Shanghai
- China
| | - Dawei Zhang
- Engineering Research Center of Optical Instrument and System
- Ministry of Education and Shanghai Key Lab of Modern Optical System
- University of Shanghai for Science and Technology
- Shanghai
- China
| | - Guodong Sui
- Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3)
- Department of Environmental Science & Engineering
- Fudan University
- Shanghai
- China
| |
Collapse
|
16
|
Park KT, Cho DG, Park JW, Hong S, Hwang J. Detection of airborne viruses using electro-aerodynamic deposition and a field-effect transistor. Sci Rep 2015; 5:17462. [PMID: 26642822 PMCID: PMC4672335 DOI: 10.1038/srep17462] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 10/23/2015] [Indexed: 11/09/2022] Open
Abstract
We report a technique for the detection of aerosolized viruses. Conventional field-effect-transistor (FET)-based techniques use solution-based processes, thus require antibody binding to the detection region of the FET prior to the supply of the analyte. With the method described here, virus-antibody-bound particles are delivered to the FET during detection; therefore, neither a pre-treatment antibody binding step on the FET channel nor washing process for virus-antibody-binding are necessary. Our method is based on the concept that virus-antibody-bound particles are larger than the virus or antibody alone, and thus have larger charge numbers following aerosol charging. When these particles are charged by negative ions and electro-aerodynamically deposited on a substrate, there exists a location on the substrate where neither lone virus nor antibody particles land, and where only virus-antibody-bound particles are deposited. If this location coincides with the channel of the FET, the resulting variation in the current can be used to indicate the existence of a virus. By aerosolizing a mixed solution of the virus and the antibody, only the virus-antibody-bound particles were transported to the swCNT-FET, and the electric current in the swCNT-FET decreased to 30% of that measured with no deposited particles.
Collapse
Affiliation(s)
- Kyu-Tae Park
- School of Mechanical Engineering, Yonsei University, Seoul 120-749, Korea
| | - Dong-Guk Cho
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 151-747, Korea
| | - Ji-Woon Park
- School of Mechanical Engineering, Yonsei University, Seoul 120-749, Korea
| | - Seunghun Hong
- Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 151-747, Korea
| | - Jungho Hwang
- School of Mechanical Engineering, Yonsei University, Seoul 120-749, Korea
| |
Collapse
|
17
|
Choi J, Kang M, Jung JH. Integrated micro-optofluidic platform for real-time detection of airborne microorganisms. Sci Rep 2015; 5:15983. [PMID: 26522006 PMCID: PMC4629162 DOI: 10.1038/srep15983] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 10/06/2015] [Indexed: 01/04/2023] Open
Abstract
We demonstrate an integrated micro-optofluidic platform for real-time, continuous detection and quantification of airborne microorganisms. Measurements of the fluorescence and light scattering from single particles in a microfluidic channel are used to determine the total particle number concentration and the microorganism number concentration in real-time. The system performance is examined by evaluating standard particle measurements with various sample flow rates and the ratios of fluorescent to non-fluorescent particles. To apply this method to real-time detection of airborne microorganisms, airborne Escherichia coli, Bacillus subtilis, and Staphylococcus epidermidis cells were introduced into the micro-optofluidic platform via bioaerosol generation, and a liquid-type particle collection setup was used. We demonstrate successful discrimination of SYTO82-dyed fluorescent bacterial cells from other residue particles in a continuous and real-time manner. In comparison with traditional microscopy cell counting and colony culture methods, this micro-optofluidic platform is not only more accurate in terms of the detection efficiency for airborne microorganisms but it also provides additional information on the total particle number concentration.
Collapse
Affiliation(s)
| | | | - Jae Hee Jung
- Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
| |
Collapse
|
18
|
Fronczek CF, Yoon JY. Biosensors for Monitoring Airborne Pathogens. ACTA ACUST UNITED AC 2015; 20:390-410. [DOI: 10.1177/2211068215580935] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Indexed: 01/15/2023]
|
19
|
Hong SC, Kang JS, Lee JE, Kim SS, Jung JH. Continuous aerosol size separator using inertial microfluidics and its application to airborne bacteria and viruses. LAB ON A CHIP 2015; 15:1889-1897. [PMID: 25714231 DOI: 10.1039/c5lc00079c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A microchannel-based aerosol size separator that separates submicron aerosols according to particle inertial differences and Dean vortices in the airflow was developed for use in low-cost, portable, real-time aerosol collectors, detectors, concentrators and other such devices. The microfluidic inertial separator was furthermore applied to simultaneously separate airborne microorganisms by size, such as airborne viruses and bacteria from larger aerosols and viral particles from bacterial cells. The entire system was designed by numerical simulation and analysis. In addition, its performance was evaluated experimentally using airborne standard polystyrene latex (PSL) particles. In addition, two airborne microorganisms, Adenovirus 40 and Staphylococcus epidermidis, were used to verify the performance of the separator. The separation ratios of each bioaerosol were measured using real-time aerosol measurement instruments and quantitative polymerase chain reaction (qPCR) analysis. The system was composed of two 90° curved microchannels and three outlets for separating the virus, bacteria and larger particles. About 70% of 3 μm particles but almost none of the bioaerosols were separated out at the first outlet. In addition, more than 70% of S. epidermidis and ~70% Adenovirus were separated out at the second and third outlets, respectively. Unwanted particle loss in the system was less than 10%. The results indicated not only good separation of bioaerosols but also the potential of our separator for use in bioaerosol applications.
Collapse
Affiliation(s)
- Seung Chan Hong
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daehak-ro 291, Yuseong-gu, Daejeon 305-701, Republic of Korea.
| | | | | | | | | |
Collapse
|
20
|
Sim KM, Kim KH, Hwang GB, Seo S, Bae GN, Jung JH. Development and evaluation of antimicrobial activated carbon fiber filters using Sophora flavescens nanoparticles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 493:291-297. [PMID: 24951887 DOI: 10.1016/j.scitotenv.2014.06.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 05/07/2014] [Accepted: 06/01/2014] [Indexed: 06/03/2023]
Abstract
Activated carbon fiber (ACF) filters have a wide range of applications, including air purification, dehumidification, and water purification, due to their large specific surface area, high adsorption capacity and rate, and specific surface reactivity. However, when airborne microorganisms such as bacteria and fungi adhere to the carbon substrate, ACF filters can become a source of microbial contamination, and their filter efficacy declines. Antimicrobial treatments are a promising means of preventing ACF bio-contamination. In this study, we demonstrate the use of Sophora flavescens in antimicrobial nanoparticles coated onto ACF filters. The particles were prepared using an aerosol process consisting of nebulization-thermal drying and particle deposition. The extract from S. flavescens is an effective, natural antimicrobial agent that exhibits antibacterial activity against various pathogens. The efficiency of Staphylococcus epidermidis inactivation increased with the concentration of S. flavescens nanoparticles in the ACF filter coating. The gas adsorption efficiency of the coated antimicrobial ACF filters was also evaluated using toluene. The toluene-removal capacity of the ACF filters remained unchanged while the antimicrobial activity was over 90% for some nanoparticle concentrations. Our results provide a scientific basis for controlling both bioaerosol and gaseous pollutants using antimicrobial ACF filters coated with S. flavescens nanoparticles.
Collapse
Affiliation(s)
- Kyoung Mi Sim
- Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea
| | - Kyung Hwan Kim
- Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea
| | - Gi Byoung Hwang
- Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea
| | - SungChul Seo
- Department of Environmental Health, College of Medicine, Korea University, Anam-dong 5-ga, Seongbuk-gu, Seoul 137-701, Republic of Korea
| | - Gwi-Nam Bae
- Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea.
| | - Jae Hee Jung
- Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea; Department of Electrical Engineering, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA.
| |
Collapse
|
21
|
Zeng L, Weber A. Herstellung von porösen Nanopartikelschichten auf beliebigen Substraten mittels Niederdruckimpaktion. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201300137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|