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Zhang Y, Li J, Jiao S, Li Y, Zhou Y, Zhang X, Maryam B, Liu X. Microfluidic sensors for the detection of emerging contaminants in water: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 929:172734. [PMID: 38663621 DOI: 10.1016/j.scitotenv.2024.172734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 03/22/2024] [Accepted: 04/22/2024] [Indexed: 04/29/2024]
Abstract
In recent years, numerous emerging contaminants have been identified in surface water, groundwater, and drinking water. Developing novel sensing methods for detecting diverse emerging pollutants in water is urgently needed, as even at low concentrations, these pollutants can pose a serious threat to human health and environmental safety. Traditional testing methods are based on laboratory equipment, which is highly sensitive but complex to operate, costly, and not suitable for on-site monitoring. Microfluidic sensors offer several benefits, including rapid evaluation, minimal sample usage, accurate liquid manipulation, compact size, automation, and in-situ detection capabilities. They provide promising and efficient analytical tools for high-performance sensing platforms in monitoring emerging contaminants in water. In this paper, recent research advances in microfluidic sensors for the detection of emerging contaminants in water are reviewed. Initially, a concise overview is provided about the various substrate materials, corresponding microfabrication techniques, different driving forces, and commonly used detection techniques for microfluidic devices. Subsequently, a comprehensive analysis is conducted on microfluidic detection methods for endocrine-disrupting chemicals, pharmaceuticals and personal care products, microplastics, and perfluorinated compounds. Finally, the prospects and future challenges of microfluidic sensors in this field are discussed.
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Affiliation(s)
- Yihao Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Jiaxuan Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Shipu Jiao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Yang Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Yu Zhou
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Xu Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Bushra Maryam
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Xianhua Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China.
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Wu L, Lu Y, Li P, Wang Y, Xue J, Tian X, Ge S, Li X, Zhai Z, Lu J, Lu X, Li D, Jiang H. Mechanical Metamaterials for Handwritten Digits Recognition. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308137. [PMID: 38145964 PMCID: PMC10933649 DOI: 10.1002/advs.202308137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/14/2023] [Indexed: 12/27/2023]
Abstract
The increasing needs for new types of computing lie in the requirements in harsh environments. In this study, the successful development of a non-electrical neural network is presented that functions based on mechanical computing. By overcoming the challenges of low mechanical signal transmission efficiency and intricate layout design methodologies, a mechanical neural network based on bistable kirigami-based mechanical metamaterials have designed. In preliminary tests, the system exhibits high reliability in recognizing handwritten digits and proves operable in low-temperature environments. This work paves the way for a new, alternative computing system with broad applications in areas where electricity is not accessible. By integrating with the traditional electronic computers, the present system lays the foundation for a more diversified form of computing.
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Affiliation(s)
- Lingling Wu
- State Key Laboratory for Manufacturing Systems EngineeringXi'an Jiaotong UniversityXi'an710049China
| | - Yuyang Lu
- School of EngineeringWestlake UniversityHangzhouZhejiang310030China
- Westlake Institute for Advanced StudyHangzhouZhejiang310024China
| | - Penghui Li
- School of EngineeringWestlake UniversityHangzhouZhejiang310030China
| | - Yong Wang
- School of Aeronautics and AstronauticsZhejiang UniversityHangzhouZhejiang310027China
| | - Jiacheng Xue
- State Key Laboratory for Manufacturing Systems EngineeringXi'an Jiaotong UniversityXi'an710049China
| | - Xiaoyong Tian
- State Key Laboratory for Manufacturing Systems EngineeringXi'an Jiaotong UniversityXi'an710049China
| | - Shenhao Ge
- School of EngineeringWestlake UniversityHangzhouZhejiang310030China
| | - Xiaowen Li
- School of EngineeringWestlake UniversityHangzhouZhejiang310030China
- Westlake Institute for Advanced StudyHangzhouZhejiang310024China
| | - Zirui Zhai
- School for Engineering of MatterTransport and EnergyArizona State UniversityTempeArizona85287USA
| | - Junqiang Lu
- Department of PhysicsShaoxing UniversityShaoxing312000China
| | - Xiaoli Lu
- Department of PhysicsZhejiang Normal UniversityJinhua321000China
| | - Dichen Li
- State Key Laboratory for Manufacturing Systems EngineeringXi'an Jiaotong UniversityXi'an710049China
| | - Hanqing Jiang
- School of EngineeringWestlake UniversityHangzhouZhejiang310030China
- Westlake Institute for Advanced StudyHangzhouZhejiang310024China
- Research Center for Industries of the FutureWestlake UniversityHangzhouZhejiang310030China
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Tanjeem N, Kreienbrink KM, Hayward RC. Modulating photothermocapillary interactions for logic operations at the air-water interface. SOFT MATTER 2024; 20:1689-1693. [PMID: 38323528 DOI: 10.1039/d3sm01487h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
We demonstrate a system for performing logical operations (OR, AND, and NOT gates) at the air-water interface based on Marangoni optical trapping and repulsion between photothermal particles. We identify a critical separation distance at which the trapped particle assemblies become unstable, providing insight into the potential for scaling to larger arrays of logic elements.
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Affiliation(s)
- Nabila Tanjeem
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80303, USA.
- Department of Physics, California State University, Fullerton, California 92831, USA
| | - Kendra M Kreienbrink
- Materials Science and Engineering Program, University of Colorado, Boulder, Colorado 80303, USA
| | - Ryan C Hayward
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, Colorado 80303, USA.
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Bezrukov A, Galyametdinov Y. Activation and Switching of Supramolecular Chemical Signals in Multi-Output Microfluidic Devices. MICROMACHINES 2022; 13:mi13101778. [PMID: 36296131 PMCID: PMC9611873 DOI: 10.3390/mi13101778] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/12/2022] [Accepted: 10/17/2022] [Indexed: 05/27/2023]
Abstract
In this study, we report on the developing of a continuous microfluidic reaction device that allows selective activation of polyelectrolyte-surfactant chemical signals in microflows and switches them between multiple outputs. A numerical model was developed for convection-diffusion reaction processes in reactive polymer-colloid microfluidic flows. Matlab scripts and scaling laws were developed for this model to predict reaction initiation and completion conditions in microfluidic devices and the location of the reaction front. The model allows the optimization of microfluidic device geometry and the setting of operation modes that provide release of the reaction product through specific outputs. Representing a chemical signal, polyelectrolyte-surfactant reaction products create various logic gate states at microfluidic chip outputs. Such systems may have potential as biochemical signal transmitters in organ-on-chip applications or chemical logic gates in cascaded microfluidic devices.
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Zhou Z, Xu M, Zhu C, He G, Zhang K, Sun D. Multistage Digital-to-Analogue Chip Based on a Weighted Flow Resistance Network for Soft Actuators. MICROMACHINES 2021; 12:mi12091016. [PMID: 34577660 PMCID: PMC8465357 DOI: 10.3390/mi12091016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/12/2021] [Accepted: 08/22/2021] [Indexed: 11/16/2022]
Abstract
A control chip with a multistage flow-rate regulation function based on the correlation between the flow resistance and flow rate has been developed in this article. Compared with the traditional proportional solenoid valve, this kind of flow valve based on microfluidic technology has the characteristics of being light-weight and having no electric drive. It solves such technical problems as how the current digital microfluidic chip can only adjust the flow switch, and the adjustment of the flow rate is difficult. To linearize the output signal, we propose a design method of weighted resistance. The output flow is controlled by a 4-bit binary pressure signal. According to the binary value of the 4-bit pressure signal at the input, the output can achieve 16-stage flow adjustment. Furthermore, we integrate the three-dimensional flow resistance network, multilayer structure microvalve, and parallel fluid network into a single chip by using 3D printing to obtain a modular flow control unit. This structure enables the microflow control signal to be converted from a digital signal to an analogue signal (DA conversion), and is suitable for microflow driving components, such as in microfluidic chip sampling systems and proportional mixing systems. In the future, we expect this device to even be used in the automatic control system of a miniature pneumatic soft actuator.
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Affiliation(s)
- Zhou Zhou
- Department of Mechanical Engineering, Anhui Ploytechnic University, Wuhu 241000, China;
- Correspondence: ; Tel.: +86-199-7526-5200
| | - Manman Xu
- Department of Mechanical Engineering, Anhui Ploytechnic University, Wuhu 241000, China;
| | - Chenlin Zhu
- Department of Mechanical Engineering, China Jiliang University, Hangzhou 310000, China;
| | - Gonghan He
- Shenzhen Research Institute of Xiamen University, 19th Gaoxin South Fourth Road, Shenzhen 518000, China;
| | - Kunpeng Zhang
- Fujian Engineering and Research Center of Intelligent Sensing and Control for High-End Equipment, Xiamen University, Xiamen 361000, China; (K.Z.); (D.S.)
| | - Daoheng Sun
- Fujian Engineering and Research Center of Intelligent Sensing and Control for High-End Equipment, Xiamen University, Xiamen 361000, China; (K.Z.); (D.S.)
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Simchi M, Riordon J, You JB, Wang Y, Xiao S, Lagunov A, Hannam T, Jarvi K, Nosrati R, Sinton D. Selection of high-quality sperm with thousands of parallel channels. LAB ON A CHIP 2021; 21:2464-2475. [PMID: 33982043 DOI: 10.1039/d0lc01182g] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Sperm selection is essential for successful fertilization and embryo development. Current clinical sperm selection methods are labor-intensive and lack the selectivity required to isolate high-quality sperm. Microfluidic sperm selection approaches have shown promise but present a trade-off between the quality and quantity of selected sperm - clinicians demand both. The structure of the female reproductive tract helps to isolate a sufficient quantity of high-quality sperm for fertilization with densely folded epithelium that provides a multitude of longitudinally oriented pathways that guide sperm toward the fertilization site. Here, a three-dimensionally structured sperm selection device is presented that levers this highly parallelized in vivo mechanism for in vitro sperm selection. The device is inserted in a test tube atop 1 mL of raw semen and provides 6500 channels that isolate ∼100 000 high-DNA-integrity sperm for assisted reproduction. In side-by-side clinical testing, the developed approach outperforms the best current clinical methods by improving the DNA integrity of the selected sperm subpopulation up to 95%. Also, the device streamlines clinical workflow, reducing the time required for sperm preparation 3-fold. This single-tube, single-step sperm preparation approach promises to improve both the economics and outcomes of assisted reproduction practices, especially in cases with significant male-factors.
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Affiliation(s)
- Mohammad Simchi
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario M5S 3G8, Canada.
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Pawar S, Duadi H, Fleger Y, Fixler D. Carbon Dots-Based Logic Gates. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:232. [PMID: 33477327 PMCID: PMC7830989 DOI: 10.3390/nano11010232] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 12/11/2022]
Abstract
Carbon dots (CDs)-based logic gates are smart nanoprobes that can respond to various analytes such as metal cations, anions, amino acids, pesticides, antioxidants, etc. Most of these logic gates are based on fluorescence techniques because they are inexpensive, give an instant response, and highly sensitive. Computations based on molecular logic can lead to advancement in modern science. This review focuses on different logic functions based on the sensing abilities of CDs and their synthesis. We also discuss the sensing mechanism of these logic gates and bring different types of possible logic operations. This review envisions that CDs-based logic gates have a promising future in computing nanodevices. In addition, we cover the advancement in CDs-based logic gates with the focus of understanding the fundamentals of how CDs have the potential for performing various logic functions depending upon their different categories.
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Affiliation(s)
- Shweta Pawar
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel; (S.P.); (H.D.)
| | - Hamootal Duadi
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel; (S.P.); (H.D.)
| | - Yafit Fleger
- Bar-Ilan Institute of Nanotechnology & Advanced Materials (BINA), Bar Ilan University, Ramat Gan 5290002, Israel;
| | - Dror Fixler
- Faculty of Engineering and the Institute of Nanotechnology and Advanced Materials, Bar Ilan University, Ramat Gan 5290002, Israel; (S.P.); (H.D.)
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