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Smith S, Sypabekova M, Kim S. Double-Sided Tape in Microfluidics: A Cost-Effective Method in Device Fabrication. BIOSENSORS 2024; 14:249. [PMID: 38785723 PMCID: PMC11118809 DOI: 10.3390/bios14050249] [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: 03/29/2024] [Revised: 04/17/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024]
Abstract
The demand for easy-to-use, affordable, accessible, and reliable technology is increasing in biological, chemical, and medical research. Microfluidic devices have the potential to meet these standards by offering cost-effective, highly sensitive, and highly specific diagnostic tests with rapid performance and minimal sample volumes. Traditional microfluidic device fabrication methods, such as photolithography and soft lithography, are time-consuming and require specialized equipment and expertise, making them costly and less accessible to researchers and clinicians and limiting the applicability and potential of microfluidic devices. To address this, researchers have turned to using new low-cost materials, such as double-sided tape for microfluidic device fabrication, which offers simple and low-cost processes. The innovation of low-cost and easy-to-make microfluidic devices improves the potential for more devices to be transitioned from laboratories to commercialized products found in stores, offices, and homes. This review serves as a comprehensive summary of the growing interest in and use of double-sided tape-based microfluidic devices in the last 20 years. It discusses the advantages of using double-sided tape, the fabrication techniques used to create and bond microfluidic devices, and the limitations of this approach in certain applications.
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Affiliation(s)
| | | | - Seunghyun Kim
- Department of Electrical & Computer Engineering, Baylor University, Waco, TX 76798, USA; (S.S.); (M.S.)
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2
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Atabakhsh S, Haji Abbasali H, Jafarabadi Ashtiani S. Thermally programmable time delay switches for multi-step assays in paper-based microfluidics. Talanta 2024; 271:125695. [PMID: 38295445 DOI: 10.1016/j.talanta.2024.125695] [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: 08/18/2023] [Revised: 12/18/2023] [Accepted: 01/17/2024] [Indexed: 02/02/2024]
Abstract
Paper-based microfluidic devices offer advantages such as low cost and disposability for point-of-care diagnostic applications. However, actuation of fluids on paper can be a challenge in multi-step and complex assays. In this work, a thermally programmable time-delay switch (TPTDS) is presented which operates by causing delays in the fluid path of a microfluidics paper-based analytical device (μPAD) by utilizing screen-printed wax micro-bridges. The time-delay is achieved through an electrical power feedback loop which indirectly adjusts the temperature of each individual micro-bridge, melting the wax into the paper. The melted wax manipulates the fluid flow depending on its penetration depth into the paper channel, which is a function of the applied temperature. To demonstrate functionality of the proposed method, the TPTDS is employed to automate and perform the nitrate assay which requires sequential delivery of reagents. Colorimetric detection is used to quantify the results by utilizing an electronic color sensor.
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Affiliation(s)
- Saeed Atabakhsh
- Department of Electrical Engineering, Roudehen Branch, Islamic Azad University, Roudehen, Iran
| | - Hossein Haji Abbasali
- School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, 14395/515, Iran
| | - Shahin Jafarabadi Ashtiani
- School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, 14395/515, Iran.
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3
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Saha T, Mukherjee S, Dickey MD, Velev OD. Harvesting and manipulating sweat and interstitial fluid in microfluidic devices. LAB ON A CHIP 2024; 24:1244-1265. [PMID: 38197332 DOI: 10.1039/d3lc00874f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Microfluidic devices began to be used to facilitate sweat and interstitial fluid (ISF) sensing in the mid-2010s. Since then, numerous prototypes involving microfluidics have been developed in different form factors for sensing biomarkers found in these fluids under in vitro, ex vivo, and in vivo (on-body) settings. These devices transport and manipulate biofluids using microfluidic channels composed of silicone, polymer, paper, or fiber. Fluid flow transport and sample management can be achieved by controlling the flow rate, surface morphology of the channel, and rate of fluid evaporation. Although many devices have been developed for estimating sweat rate, electrolyte, and metabolite levels, only a handful have been able to proceed beyond laboratory testing and reach the stage of clinical trials and commercialization. To further this technology, this review reports on the utilization of microfluidics towards sweat and ISF management and transport. The review is distinguished from other recent reviews by focusing on microfluidic principles of sweat and ISF generation, transport, extraction, and management. Challenges and prospects are highlighted, with a discussion on how to transition such prototypes towards personalized healthcare monitoring systems.
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Affiliation(s)
- Tamoghna Saha
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA.
| | - Sneha Mukherjee
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA.
| | - Michael D Dickey
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA.
| | - Orlin D Velev
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA.
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4
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Vloemans D, Van Hileghem L, Ordutowski H, Dal Dosso F, Spasic D, Lammertyn J. Self-Powered Microfluidics for Point-of-Care Solutions: From Sampling to Detection of Proteins and Nucleic Acids. Methods Mol Biol 2024; 2804:3-50. [PMID: 38753138 DOI: 10.1007/978-1-0716-3850-7_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2024]
Abstract
Self-powered microfluidics presents a revolutionary approach to address the challenges of healthcare in decentralized and point-of-care settings where limited access to resources and infrastructure prevails or rapid clinical decision-making is critical. These microfluidic systems exploit physical and chemical phenomena, such as capillary forces and surface tension, to manipulate tiny volumes of fluids without the need for external power sources, making them cost-effective and highly portable. Recent technological advancements have demonstrated the ability to preprogram complex multistep liquid operations within the microfluidic circuit of these standalone systems, which enabled the integration of sensitive detection and readout principles. This chapter first addresses how the accessibility to in vitro diagnostics can be improved by shifting toward decentralized approaches like remote microsampling and point-of-care testing. Next, the crucial role of self-powered microfluidic technologies to enable this patient-centric healthcare transition is emphasized using various state-of-the-art examples, with a primary focus on applications related to biofluid collection and the detection of either proteins or nucleic acids. This chapter concludes with a summary of the main findings and our vision of the future perspectives in the field of self-powered microfluidic technologies and their use for in vitro diagnostics applications.
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Affiliation(s)
- Dries Vloemans
- Department of Biosystems - Biosensors Group, KU Leuven, Leuven, Belgium
| | | | - Henry Ordutowski
- Department of Biosystems - Biosensors Group, KU Leuven, Leuven, Belgium
| | | | - Dragana Spasic
- Department of Biosystems - Biosensors Group, KU Leuven, Leuven, Belgium
| | - Jeroen Lammertyn
- Department of Biosystems - Biosensors Group, KU Leuven, Leuven, Belgium.
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5
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Kumar A, Heidari-Bafroui H, Rahmani N, Anagnostopoulos C, Faghri M. Modeling of Paper-Based Bi-Material Cantilever Actuator for Microfluidic Biosensors. BIOSENSORS 2023; 13:580. [PMID: 37366945 DOI: 10.3390/bios13060580] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 06/28/2023]
Abstract
This research explores the dynamics of a fluidically loaded Bi-Material cantilever (B-MaC), a critical component of μPADs (microfluidic paper-based analytical devices) used in point-of-care diagnostics. Constructed from Scotch Tape and Whatman Grade 41 filter paper strips, the B-MaC's behavior under fluid imbibition is examined. A capillary fluid flow model is formulated for the B-MaC, adhering to the Lucas-Washburn (LW) equation, and supported by empirical data. This paper further investigates the stress-strain relationship to estimate the modulus of the B-MaC at various saturation levels and to predict the behavior of the fluidically loaded cantilever. The study shows that the Young's modulus of Whatman Grade 41 filter paper drastically decreases to approximately 20 MPa (about 7% of its dry-state value) upon full saturation. This significant decrease in flexural rigidity, in conjunction with the hygroexpansive strain and coefficient of hygroexpansion (empirically deduced to be 0.008), is essential in determining the B-MaC's deflection. The proposed moderate deflection formulation effectively predicts the B-MaC's behavior under fluidic loading, emphasizing the measurement of maximum (tip) deflection using interfacial boundary conditions for the B-MaC's wet and dry regions. This knowledge of tip deflection will prove instrumental in optimizing the design parameters of B-MaCs.
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Affiliation(s)
- Ashutosh Kumar
- Microfluidics Laboratory, Department of Mechanical, Industrial and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Hojat Heidari-Bafroui
- Microfluidics Laboratory, Department of Mechanical, Industrial and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Nassim Rahmani
- Microfluidics Laboratory, Department of Mechanical, Industrial and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Constantine Anagnostopoulos
- Microfluidics Laboratory, Department of Mechanical, Industrial and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Mohammad Faghri
- Microfluidics Laboratory, Department of Mechanical, Industrial and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
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6
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Roller RM, Rea A, Lieberman M. The air-gap PAD: a roll-to-roll-compatible fabrication method for paper microfluidics. LAB ON A CHIP 2023; 23:1918-1925. [PMID: 36883463 DOI: 10.1039/d2lc01164f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Paper-based analytical devices (PADs) offer a low-cost, user-friendly platform for rapid point-of-use testing. Without scalable fabrication methods, however, few PADs make it out of the academic laboratory and into the hands of end users. Previously, wax printing was considered an ideal PAD fabrication method, but given that wax printers are no longer commercially available, alternatives are needed. Here, we present one such alternative: the air-gap PAD. Air-gap PADs consist of hydrophilic paper test zones, separated by "air gaps" and affixed to a hydrophobic backing with double-sided adhesive. The primary appeal of this design is its compatibility with roll-to-roll equipment for large-scale manufacturing. In this study, we examine design considerations for air-gap PADs, compare the performance of wax-printed and air-gap PADs, and report on a pilot-scale roll-to-roll production run of air-gap PADs in partnership with a commercial test-strip manufacturer. Air-gap devices performed comparably to their wax-printed counterparts in Washburn flow experiments, a paper-based titration, and a 12-lane pharmaceutical screening device. Using roll-to-roll manufacturing, we produced 2700 feet of air-gap PADs for as little as $0.03 per PAD.
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Affiliation(s)
- Rachel M Roller
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA.
| | - Angela Rea
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA.
| | - Marya Lieberman
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46556, USA.
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Heidari-Bafroui H, Kumar A, Hahn C, Scholz N, Charbaji A, Rahmani N, Anagnostopoulos C, Faghri M. Development of a New Lab-on-Paper Microfluidics Platform Using Bi-Material Cantilever Actuators for ELISA on Paper. BIOSENSORS 2023; 13:310. [PMID: 36979522 PMCID: PMC10046564 DOI: 10.3390/bios13030310] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/16/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
In this paper, we present a novel and cost-effective lab-on-paper microfluidics platform for performing ELISA autonomously, with no user intervention beyond adding the sample. The platform utilizes two Bi-Material Cantilever Valves placed in a specially designed housing. The integration of these valves in a specific channel network forms a complete fluidic logic circuit for performing ELISA on paper. The housing also incorporates an innovative reagent storage and release mechanism that minimizes variability in the volume of reagents released into the reagent pads. The platform design was optimized to minimize variance in the time of fluid wicking from the reagent pad, using a randomized design of experiment. The platform adheres to the World Health Organization's ASSURED principles. The optimized design was used to conduct an ELISA for detecting rabbit immunoglobulin G (IgG) in a buffer, with a limit of detection of 2.27 ng/mL and a limit of quantification of 8.33 ng/mL. This represents a 58% improvement over previous ELISA methods for detecting rabbit IgG in buffer using portable microfluidic technology.
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Affiliation(s)
- Hojat Heidari-Bafroui
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Ashutosh Kumar
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Cameron Hahn
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Nicholas Scholz
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Amer Charbaji
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Nassim Rahmani
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Constantine Anagnostopoulos
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
| | - Mohammad Faghri
- Microfluidics Laboratory, Department of Mechanical, Industrial, and Systems Engineering, University of Rhode Island, 2 East Alumni Avenue, Kingston, RI 02881, USA
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8
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Laha S, Kar S, Chakraborty S. Cellular aggregation dictates universal spreading behaviour of a whole-blood drop on a paper strip. J Colloid Interface Sci 2023; 640:309-319. [PMID: 36867927 DOI: 10.1016/j.jcis.2023.02.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 01/26/2023] [Accepted: 02/11/2023] [Indexed: 02/21/2023]
Abstract
HYPOTHESIS The complex spreading dynamics of blood on paper matrix is likely to be quantitatively altered with variations in the fractional occupancy of red blood cells in the whole blood (haematocrit). Here, we presented an apparently surprising observation that a finite volume blood drop undergoes a universal time-dependent spreading on a filter paper strip that is virtually invariant with its hematocrit level within physiologically healthy regime, though distinctively distinguishable from the spreading laws of blood plasma and water. EXPERIMENTS Our hypothesis was ascertained by performing controlled wicking experiments on filter papers of different grades. Spreading of human blood samples of different haematocrit levels ranging between 15% and 51% and the plasma separated from therein were traced by combined high-speed imaging and microscopy. These experiments were complemented with a semi-analytical theory to decipher the key physics of interest. RESULTS Our results unveiled the exclusive influence of the obstructing cellular aggregates in the randomly distributed hierarchically structured porous pathways and deciphered the role of the networked structures of the various plasma proteins that induced hindered diffusion. The resulting universal signatures of spontaneous dynamic spreading, delving centrally on the fractional reduction in the interlaced porous passages, provide novel design basis for paper-microfluidic kits in medical diagnostics and beyond.
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Affiliation(s)
- Sampad Laha
- Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | - Shantimoy Kar
- Advanced Technology Development Centre, Indian Institute of Technology, Kharagpur 721302, India; Department of Medical Devices, National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad, Telangana 500037, India
| | - Suman Chakraborty
- Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur 721302, India; Advanced Technology Development Centre, Indian Institute of Technology, Kharagpur 721302, India.
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9
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Anushka, Bandopadhyay A, Das PK. Paper based microfluidic devices: a review of fabrication techniques and applications. THE EUROPEAN PHYSICAL JOURNAL. SPECIAL TOPICS 2022; 232:781-815. [PMID: 36532608 PMCID: PMC9743133 DOI: 10.1140/epjs/s11734-022-00727-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/09/2022] [Indexed: 06/14/2023]
Abstract
A wide range of applications are possible with paper-based analytical devices, which are low priced, easy to fabricate and operate, and require no specialized equipment. Paper-based microfluidics offers the design of miniaturized POC devices to be applied in the health, environment, food, and energy sector employing the ASSURED (Affordable, Sensitive, Specific, User-friendly, Rapid and Robust, Equipment free and Deliverable to end users) principle of WHO. Therefore, this field is growing very rapidly and ample research is being done. This review focuses on fabrication and detection techniques reported to date. Additionally, this review emphasises on the application of this technology in the area of medical diagnosis, energy generation, environmental monitoring, and food quality control. This review also presents the theoretical analysis of fluid flow in porous media for the efficient handling and control of fluids. The limitations of PAD have also been discussed with an emphasis to concern on the transformation of such devices from laboratory to the consumer.
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Affiliation(s)
- Anushka
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302 India
| | - Aditya Bandopadhyay
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302 India
| | - Prasanta Kumar Das
- Department of Mechanical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302 India
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10
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Rofman B, Naddaf R, Bar-Dolev M, Gefen T, Ben-Assa N, Geva-Zatorsky N, Bercovici M. Automated device for multi-stage paper-based assays enabled by an electroosmotic pumping valve. LAB ON A CHIP 2022; 22:4511-4520. [PMID: 35960181 DOI: 10.1039/d2lc00572g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We leverage electroosmotic-flow generation in porous media in combination with a hydrophobic air gap to create a controllable valve capable of operating in either finite dosing or continuous flow mode, enabling the implementation of multi-step assays on paper-based devices. The hydrophobic air gap between two paper pads creates a barrier keeping the valve nominally closed. Electroosmotic actuation, implemented using a pair of electrodes under the upstream pad, generates sufficient pressure to overcome the barrier and connect the two pads. We present a model describing the flow and governing parameters, including the electric potentials required to open and close the valve and the threshold potential for switching between the modes of operation. We construct the air gap using a hierarchical superhydrophobic surface and study the stability of the closed valve under strenuous conditions and find good agreement between our model and experimental results, as well as stable working conditions for practical applications. We present a straightforward design for a compact and automated device based on paper pads placed on top of printed circuit boards (PCB), equipped with heating and actuation electrodes and additional power and logic capabilities. Finally, we demonstrate the use of the device for amplification of SARS-CoV-2 sequences directly from raw saliva samples, using a loop-mediated isothermal amplification (LAMP) protocol requiring sample lysis followed by enzymatic deactivation and delivery to multiple amplification sites. Since PCB costs scale favorably with mass-production, we believe that this approach could lead to a low-cost diagnostic device that offers the sensitivity of amplification methods.
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Affiliation(s)
- Baruch Rofman
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, 3200003, Israel.
| | - Rawi Naddaf
- Rappaport Technion Integrated Cancer Center (RTICC), Department of Cell Biology and Cancer Science, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, 3200003, Israel.
| | - Maya Bar-Dolev
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, 3200003, Israel.
| | - Tal Gefen
- Rappaport Technion Integrated Cancer Center (RTICC), Department of Cell Biology and Cancer Science, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, 3200003, Israel.
| | - Nadav Ben-Assa
- Rappaport Technion Integrated Cancer Center (RTICC), Department of Cell Biology and Cancer Science, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, 3200003, Israel.
| | - Naama Geva-Zatorsky
- Rappaport Technion Integrated Cancer Center (RTICC), Department of Cell Biology and Cancer Science, Rappaport Faculty of Medicine, Technion - Israel Institute of Technology, Haifa, 3200003, Israel.
- CIFAR, Toronto, ON, Canada
| | - Moran Bercovici
- Faculty of Mechanical Engineering, Technion - Israel Institute of Technology, Haifa, 3200003, Israel.
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11
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Khosla NK, Lesinski JM, Colombo M, Bezinge L, deMello AJ, Richards DA. Simplifying the complex: accessible microfluidic solutions for contemporary processes within in vitro diagnostics. LAB ON A CHIP 2022; 22:3340-3360. [PMID: 35984715 PMCID: PMC9469643 DOI: 10.1039/d2lc00609j] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 08/15/2022] [Indexed: 05/02/2023]
Abstract
In vitro diagnostics (IVDs) form the cornerstone of modern medicine. They are routinely employed throughout the entire treatment pathway, from initial diagnosis through to prognosis, treatment planning, and post-treatment surveillance. Given the proven links between high quality diagnostic testing and overall health, ensuring broad access to IVDs has long been a focus of both researchers and medical professionals. Unfortunately, the current diagnostic paradigm relies heavily on centralized laboratories, complex and expensive equipment, and highly trained personnel. It is commonly assumed that this level of complexity is required to achieve the performance necessary for sensitive and specific disease diagnosis, and that making something affordable and accessible entails significant compromises in test performance. However, recent work in the field of microfluidics is challenging this notion. By exploiting the unique features of microfluidic systems, researchers have been able to create progressively simple devices that can perform increasingly complex diagnostic assays. This review details how microfluidic technologies are disrupting the status quo, and facilitating the development of simple, affordable, and accessible integrated IVDs. Importantly, we discuss the advantages and limitations of various approaches, and highlight the remaining challenges within the field.
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Affiliation(s)
- Nathan K Khosla
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir Prelog Weg 1, Zürich, 8093, Switzerland.
| | - Jake M Lesinski
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir Prelog Weg 1, Zürich, 8093, Switzerland.
| | - Monika Colombo
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir Prelog Weg 1, Zürich, 8093, Switzerland.
| | - Léonard Bezinge
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir Prelog Weg 1, Zürich, 8093, Switzerland.
| | - Andrew J deMello
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir Prelog Weg 1, Zürich, 8093, Switzerland.
| | - Daniel A Richards
- Institute for Chemical and Bioengineering, ETH Zürich, Vladimir Prelog Weg 1, Zürich, 8093, Switzerland.
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12
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Role of Paper-Based Sensors in Fight against Cancer for the Developing World. BIOSENSORS 2022; 12:bios12090737. [PMID: 36140122 PMCID: PMC9496559 DOI: 10.3390/bios12090737] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/25/2022] [Accepted: 08/31/2022] [Indexed: 11/17/2022]
Abstract
Cancer is one of the major killers across the globe. According to the WHO, more than 10 million people succumbed to cancer in the year 2020 alone. The early detection of cancer is key to reducing the mortality rate. In low- and medium-income countries, the screening facilities are limited due to a scarcity of resources and equipment. Paper-based microfluidics provide a platform for a low-cost, biodegradable micro-total analysis system (µTAS) that can be used for the detection of critical biomarkers for cancer screening. This work aims to review and provide a perspective on various available paper-based methods for cancer screening. The work includes an overview of paper-based sensors, the analytes that can be detected and the detection, and readout methods used.
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14
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Qiao Y, Fang Y, Shang J, Zhao X, Li S, Mao G, Wang H. A fluorimetric test strip with suppressed "Coffee Ring Effect" for selective mercury ion analysis. Analyst 2022; 147:2633-2639. [PMID: 35639344 DOI: 10.1039/d2an00562j] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Nowadays, test strips are widely applied, but their use is mostly limited to the qualitative or half-quantitative analysis of targets. The main reason for their limited use is the "Coffee Ring Effect" (CRE) of probe materials, which leads to a heterogeneous probe distribution and poor testing reproducibility and sensitivity. In the present work, a fluorescent test strip was fabricated with a suppressed CRE of silver nanocluster (AgNC) probes coated by gelatin (Gel) under vacuum-aided fast lyophilization. Uniform and stable deposition of AgNC probes was achieved onto the test strips with a high loading capacity. The AgNCs displayed specific responses to Hg2+ ions, allowing sensitive and quantitative analysis in the linear concentration ranges from 0.20 to 50000 nM with a limit of detection of 0.10 nM. Given the advantages of rapid and facile preparation, CRE suppression, high biocompatibility, and cost-effectiveness, such a fabrication protocol may pave the way for the design of various test strips-based devices for point-of-care analytical applications in the fields of environmental monitoring, food quality analysis, and clinical diagnostics.
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Affiliation(s)
- Yuchun Qiao
- Huzhou Key Laboratory of Medical and Environmental Applications Technologies, School of Life Sciences, Huzhou University, Zhejiang, 313000, P.R. China. .,Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Bioengineering, University of Science and Technology Beijing, Beijing 100083, P.R. China
| | - Yu Fang
- Department of Chemistry, Capital Normal University, Beijing 100048, P.R. China
| | - Jizhen Shang
- Huzhou Key Laboratory of Medical and Environmental Applications Technologies, School of Life Sciences, Huzhou University, Zhejiang, 313000, P.R. China.
| | - Xiaoting Zhao
- Huzhou Key Laboratory of Medical and Environmental Applications Technologies, School of Life Sciences, Huzhou University, Zhejiang, 313000, P.R. China.
| | - Shuai Li
- Huzhou Key Laboratory of Medical and Environmental Applications Technologies, School of Life Sciences, Huzhou University, Zhejiang, 313000, P.R. China.
| | - Guojiang Mao
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, P.R. China
| | - Hua Wang
- Huzhou Key Laboratory of Medical and Environmental Applications Technologies, School of Life Sciences, Huzhou University, Zhejiang, 313000, P.R. China.
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15
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The Loan Trinh K, Ri Chae W, Yoon Lee N. Recent advances in the fabrication strategies of paper-based microfluidic devices for rapid detection of bacteria and viruses. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107548] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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16
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Reversible Thermo-Responsive Valve for Microfluidic Paper-Based Analytical Devices. MICROMACHINES 2022; 13:mi13050690. [PMID: 35630157 PMCID: PMC9145873 DOI: 10.3390/mi13050690] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/27/2022] [Accepted: 04/27/2022] [Indexed: 11/18/2022]
Abstract
Fluid control on a paper channel is necessary for analysis with multiple reagents, such as enzyme-linked immunosorbent assay (ELISA) in microfluidic paper-based analytical devices (µPADs). In this study, a thermo-responsive valve was fabricated by polymerizing N-isopropylacrylamide on a PVDF porous membrane by plasma-induced graft polymerization. The polymerized membrane was observed by scanning electron microscopy (SEM), and it was confirmed that more pores were closed at temperatures below 32 °C and more pores were opened at temperatures above 32 °C. Valve permeability tests confirmed that the proposed polymerized membrane was impermeable to water and proteins at temperatures below 32 °C and permeable to water at temperatures above 32 °C. The valve could also be reversibly and repeatedly opened and closed by changing the temperature near 32 °C. These results suggest that plasma-induced graft polymerization may be used to produce thermo-responsive valves that can be opened and closed without subsequent loss of performance. These results indicate that the thermo-responsive valve fabricated by plasma-induced graft polymerization could potentially be applied to ELISA with µPADs.
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17
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Bhattarai RK, Pudasaini S, Sah M, Neupane BB, Giri B. Handmade Paper as a Paper Analytical Device for Determining the Quality of an Antidiabetic Drug. ACS OMEGA 2022; 7:14074-14081. [PMID: 35559197 PMCID: PMC9089334 DOI: 10.1021/acsomega.2c00633] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 03/29/2022] [Indexed: 05/14/2023]
Abstract
Paper analytical devices (PADs) are a class of low-cost, portable, and easy-to-use platform for several analytical tests in clinical diagnostics, environmental pollution monitoring, and food and drug safety screening. These devices are primarily made from cellulosic paper. Considering the importance of eco-friendly and local or distributed manufacturing of devices realized during the COVID-19 pandemic, we systematically studied the potential of handmade Nepali paper to be used in fabricating PADs in this work. We characterized five different handmade papers made from locally available plant fibers using an eco-friendly method and used them to fabricate PADs for determining the drug quality. The thickness, grammage, and apparent density of the paper samples ranged from 198.6 to 314.8 μm, 49.1 to 117.8 g/m2, and 0.23 to 0.43 g/cm3, respectively. The moisture content, water filtration, and wicking speed ranged from 5.8 to 7.1%, 35.7 to 156.7, and 0.062 to 0.124 mms-1, respectively. Furthermore, the water contact angle and porosity ranged from 76.6 to 112.1° and 79 to 83%, respectively. The best paper sample (P5) was chosen to fabricate PADs for the determination of metformin, an antidiabetic drug. The metformin assay on PADs followed a linear range from 0.0625 to 0.5 mg/mL. The assay had a limit of detection and limit of quantitation of 0.05 and 0.18 mg/mL, respectively. The average amount of metformin concentration in samples collected from local pharmacies (n = 20) was 465.6 ± 15.1 mg/tablet. When compared with the spectrophotometric method, PAD assay correctly predicted the concentration of 90% samples. The PAD assay on handmade paper may provide a low-cost and easy-to-use system for screening the quality of drugs and other point-of-need applications.
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Affiliation(s)
- Ram Kumar Bhattarai
- Center
for Analytical Sciences, Kathmandu Institute
of Applied Sciences, Kathmandu 44600, Nepal
- Kantipur
Valley College, Lalitpur 44700, Nepal
| | - Sanam Pudasaini
- Center
for Analytical Sciences, Kathmandu Institute
of Applied Sciences, Kathmandu 44600, Nepal
| | - Mukesh Sah
- Center
for Analytical Sciences, Kathmandu Institute
of Applied Sciences, Kathmandu 44600, Nepal
- Kantipur
Valley College, Lalitpur 44700, Nepal
| | | | - Basant Giri
- Center
for Analytical Sciences, Kathmandu Institute
of Applied Sciences, Kathmandu 44600, Nepal
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18
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Sinha A, Basu M, Chandna P. Paper based microfluidics: A forecast toward the most affordable and rapid point-of-care devices. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2022; 186:109-158. [PMID: 35033281 DOI: 10.1016/bs.pmbts.2021.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The microfluidic industry has evolved through years with acquired scientific knowledge from different, and already developed industries. Consequently, a wide range of materials like silicon from the electronic industry to all the way, silicone, from the chemical engineering industry, has been spotted to solve similar challenges. Although a typical microfluidic chip, fabricated from glass or polymer substrates offers definite benefits, however, paper-based microfluidic analytical devices (μPADs) possess numerous special benefits for practical implementation at a lower price. Owing to these features, in recent years, paper microfluidics has drawn immense interest from researchers in industry and academia alike. These devices have wider applications with advantages like lower cost, speedy detection, user-easiness, biocompatibility, sensitivity, and specificity etc. when compared to other microfluidic devices. Therefore, these sensitive but affordable devices fit themselves into point-of-care (POC) testing with features in demand like natural disposability, situational flexibility, and the capability to store and analyze the target at the point of requirement. Gradually, advancements in fabrication technologies, assay development techniques, and improved packaging capabilities, have contributed significantly to the real-time identification and health investigation through paper microfluidics; however, the growth has not been limited to the biomedical field; industries like electronics, energy storage and many more have expanded substantially. Here, we represent an overall state of the paper-based microfluidic technology by covering the fundamentals, working principles, different fabrication procedures, applications for various needs and then to make things more practical, the real-life scenario and practical challenges involved in launching a device into the market have been revealed. To conclude, recent contribution of μPADs in the 2020 pandemic and potential future possibilities have been reviewed.
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19
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Wu D, Ding Y, Zhang Y, Pan D, Li J, Hu Y, Xu B, Chu J. 3D microfluidic cloth-based analytical devices on a single piece of cloth by one-step laser hydrophilicity modification. LAB ON A CHIP 2021; 21:4805-4813. [PMID: 34734609 DOI: 10.1039/d1lc00639h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this work, we report for the first time a simple and robust method for constructing a 3D microfluidic analytical device on a single piece of hydrophobic cotton cloth. Specifically, laser scanning technology was applied to process hydrophilic regions at the top and bottom of a single piece of hydrophobic cloth. Symmetrical hydrophilic regions at the bottom and top constituted vertical microfluidic channels, and asymmetrical hydrophilic regions constituted transverse flow channels. Liquid flow velocity in 3D cloth-based microchannels can be adjusted flexibly by modifying laser parameters, and programmable laser scanning can be utilized to process 3D microfluidic devices with various patterns. Single-piece 3D cloth-based microfluidic devices formed via this method can be used in many fields such as information encryption and anti-counterfeiting, multi-liquid printing and liquid mixing dilution. Compared to traditional processing methods of 3D cloth-based microfluidic devices, the laser scanning method eliminates multiple complex and repetitive assembly processes, which is a significant advance in this research area. This processing method provides a new option for fast and large-scale manufacturing of 3D cloth-based microfluidic analysis devices for point-of-care testing application in undeveloped regions/countries.
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Affiliation(s)
- Dong Wu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China.
| | - Yinlong Ding
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China.
| | - Yuxuan Zhang
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China.
| | - Deng Pan
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China.
| | - Jiawen Li
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China.
| | - Yanlei Hu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China.
| | - Bing Xu
- School of Mechanical Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Jiaru Chu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China.
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20
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Potter J, Brisk P, Grover WH. Rapid development and optimization of paper microfluidic designs using software automation. Anal Chim Acta 2021; 1184:338985. [PMID: 34625247 DOI: 10.1016/j.aca.2021.338985] [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: 06/25/2021] [Accepted: 08/22/2021] [Indexed: 11/30/2022]
Abstract
Paper microfluidic or lateral flow devices have found many applications, especially in medical diagnostics. Their low cost and ease of use makes them particularly valuable in resource-limited and point-of-care applications. However, the process of developing new paper microfluidic devices is slowed by the need to find optimal values for their various design parameters, which determine the overall size and fluid volume requirements of the device. Often, researchers must design and test several different versions of a device to find a combination of parameters that functions as intended. To accelerate the development of new paper microfluidics, we developed a software framework that automatically designs custom paper microfluidic devices for a given application. Once the user specifies the desired device parameters, the software generates printable image files of the resulting devices, ready to output to a conventional wax ink color printer and test. As a proof-of-concept, we used our software to automatically design 51 different paper microfluidic devices we needed to create a functional lateral flow assay that detects protein and glucose in urine. These designs took only a few seconds to generate and were used in 120 lab experiments we performed in 16 h in the lab. Thus, with the help of our software framework, we went from an idea to a functional device in just two work days. By accelerating device development and enabling researchers without microfluidics experience to create custom devices, our software can help spread paper microfluidic technology to important new application areas.
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Affiliation(s)
- Joshua Potter
- Department of Computer Science and Engineering, University of California, Riverside, CA, 92521, USA
| | - Philip Brisk
- Department of Computer Science and Engineering, University of California, Riverside, CA, 92521, USA
| | - William H Grover
- Department of Bioengineering, University of California, Riverside, CA, 92521, USA.
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21
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Ozer T, Henry CS. Paper-based analytical devices for virus detection: Recent strategies for current and future pandemics. Trends Analyt Chem 2021; 144:116424. [PMID: 34462612 PMCID: PMC8387141 DOI: 10.1016/j.trac.2021.116424] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The importance of user-friendly, inexpensive, sensitive, and selective detection of viruses has been highlighted again due to the recent Coronavirus disease 2019 (COVID-19) pandemic. Among the analytical tools, paper-based devices (PADs) have become a leading alternative for point-of-care (POC) testing. In this review, we discuss the recent development strategies and applications in nucleic acid-based, antibody/antigen-based and other affinity-based PADs using optical and electrochemical detection methods for sensing viruses. In addition, advantages and drawbacks of presented PADs are identified. Current state and insights towards future perspectives are presented regarding developing POC diagnosis platform for COVID-19. This review considers state-of-the-art technologies for further development and improvement in PADs performance for virus detection.
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Affiliation(s)
- Tugba Ozer
- Yildiz Technical University, Faculty of Chemical-Metallurgical Engineering, Department of Bioengineering, 34220, Istanbul, Turkey
| | - Charles S Henry
- Colorado State University, Department of Chemistry, Fort Collins, CO, 80523, USA
- Colorado State University, School of Biomedical Engineering, Fort Collins, CO, 80523, USA
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22
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Noviana E, Ozer T, Carrell CS, Link JS, McMahon C, Jang I, Henry CS. Microfluidic Paper-Based Analytical Devices: From Design to Applications. Chem Rev 2021; 121:11835-11885. [DOI: 10.1021/acs.chemrev.0c01335] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Eka Noviana
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Gadjah Mada, Yogyakarta, Indonesia 55281
| | - Tugba Ozer
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
- Department of Bioengineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Istanbul, Turkey 34220
| | - Cody S. Carrell
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Jeremy S. Link
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Catherine McMahon
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Ilhoon Jang
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
- Institute of Nano Science and Technology, Hanyang University, Seoul, South Korea 04763
| | - Charles S. Henry
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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23
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Salva ML, Rocca M, Niemeyer CM, Delamarche E. Methods for immobilizing receptors in microfluidic devices: A review. MICRO AND NANO ENGINEERING 2021. [DOI: 10.1016/j.mne.2021.100085] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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24
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Murray LP, Govindan R, Mora AC, Munro JB, Mace CR. Antibody affinity as a driver of signal generation in a paper-based immunoassay for Ebola virus surveillance. Anal Bioanal Chem 2021; 413:3695-3706. [PMID: 33852053 PMCID: PMC8044655 DOI: 10.1007/s00216-021-03317-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/09/2021] [Accepted: 03/30/2021] [Indexed: 11/24/2022]
Abstract
During epidemics, such as the frequent and devastating Ebola virus outbreaks that have historically plagued regions of Africa, serological surveillance efforts are critical for viral containment and the development of effective antiviral therapeutics. Antibody serology can also be used retrospectively for population-level surveillance to provide a more complete estimate of total infections. Ebola surveillance efforts rely on enzyme-linked immunosorbent assays (ELISAs), which restrict testing to laboratories and are not adaptable for use in resource-limited settings. In this manuscript, we describe a paper-based immunoassay capable of detecting anti-Ebola IgG using Ebola virus envelope glycoprotein ectodomain (GP) as the affinity reagent. We evaluated seven monoclonal antibodies (mAbs) against GP—KZ52, 13C6, 4G7, 2G4, c6D8, 13F6, and 4F3—to elucidate the impact of binding affinity and binding epitope on assay performance and, ultimately, result interpretation. We used biolayer interferometry to characterize the binding of each antibody to GP before assessing their performance in our paper-based device. Binding affinity (KD) and on rate (kon) were major factors influencing the sensitivity of the paper-based immunoassay. mAbs with the best KD (3–25 nM) exhibited the lowest limits of detection (ca. μg mL−1), while mAbs with KD > 25 nM were undetectable in our device. Additionally, and most surprisingly, we determined that observed signals in paper devices were directly proportional to kon. These results highlight the importance of ensuring that the quality of recognition reagents is sufficient to support desired assay performance and suggest that the strength of an individual’s immune response can impact the interpretation of assay results.
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Affiliation(s)
- Lara P Murray
- Department of Chemistry, Tufts University, Medford, MA, 02155, USA
| | - Ramesh Govindan
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA, 01605, USA.,Department of Molecular Biology and Microbiology, Tufts University School of Medicine and Graduate School of Biomedical Sciences, Boston, MA, 02111, USA
| | - Andrea C Mora
- Department of Chemistry, Tufts University, Medford, MA, 02155, USA
| | - James B Munro
- Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA, 01605, USA.,Department of Molecular Biology and Microbiology, Tufts University School of Medicine and Graduate School of Biomedical Sciences, Boston, MA, 02111, USA
| | - Charles R Mace
- Department of Chemistry, Tufts University, Medford, MA, 02155, USA.
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25
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Microfluidic strategies for sample separation and rapid detection of food allergens. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.02.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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26
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Mandsberg NK, Højgaard J, Joshi SS, Nielsen LH, Boisen A, Hwu ET. Consumer-Grade Inkjet Printer for Versatile and Precise Chemical Deposition. ACS OMEGA 2021; 6:7786-7794. [PMID: 33778290 PMCID: PMC7992151 DOI: 10.1021/acsomega.1c00282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
Two simple, mechanical modifications are introduced to a consumer-grade inkjet printer to greatly increase its applicability. First, roller isolation bars are added to unlock multiple prints on the same substrate without smearing. This enables printing on a diverse set of substrates (rigid, elastic, liquid, granular, and sticky). Second, spring loadings are added to increase the print precision up to 50-fold, which facilitates alignment to a pre-patterned substrate or between successive prints. Utilizing the expanded substrate compatibility and the increased print precision, we explore tunable loading of drug combinations into microdevices. This loading method has promising applications within point-of-care personalized medication. Furthermore, we show how inkjet printers with array-type printheads (in our case, 6 x 90 nozzles) allow for quasi-simultaneous loading of reactants into microfluidic systems. The ability to do a quasi-simultaneous introduction of chemicals may be particularly useful for studies of rapidly reacting systems of three or more reactants, where premature introduction can shift the initial conditions from the intended. We believe that our modifications to an affordable system will inspire researchers to explore the possibilities of inkjet printing even further.
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Affiliation(s)
- Nikolaj Kofoed Mandsberg
- Center for Intelligent Drug
Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN),
Department of Health Technology, Technical
University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Jesper Højgaard
- Center for Intelligent Drug
Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN),
Department of Health Technology, Technical
University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Shreya Suhas Joshi
- Center for Intelligent Drug
Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN),
Department of Health Technology, Technical
University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Line Hagner Nielsen
- Center for Intelligent Drug
Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN),
Department of Health Technology, Technical
University of Denmark, 2800 Kgs Lyngby, Denmark
| | - Anja Boisen
- Center for Intelligent Drug
Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN),
Department of Health Technology, Technical
University of Denmark, 2800 Kgs Lyngby, Denmark
| | - En Te Hwu
- Center for Intelligent Drug
Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN),
Department of Health Technology, Technical
University of Denmark, 2800 Kgs Lyngby, Denmark
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27
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Zhang D, Li C, Ji D, Wang Y. Paper-Based Microfluidic Sensors for Onsite Environmental Detection: A Critical Review. Crit Rev Anal Chem 2021; 52:1432-1449. [PMID: 33660571 DOI: 10.1080/10408347.2021.1886900] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A newly developed research topic, fabricated paper-based microfluidic sensors, was discussed in the field of low-cost environmental detection. Distinguished with the traditional dipstick or lateral-flow setups, these paper-based microfluidic sensors can serve as a tool for onsite quantitative and semi-quantitative measurements, without risks to cause environmental pollution. They have attracted increasing interest since the first easy-fabricated paper-based setup reported by Whitesides group in 2007. Most of the publications utilized paper-based sensors in clinical detection. In recent years, some groups started to use these sensors in environmental measurement, leading to precise, easy operation, low-cost, and eco-friendly methods for onsite detection. In this review, paper-based microfluidic sensors were briefly introduced, followed by literatures review and discussion for future perspectives.
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Affiliation(s)
- Daohong Zhang
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, China.,Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Tianjin, China
| | - Chaocan Li
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, China.,Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Tianjin, China
| | - Dongli Ji
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, China.,Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Tianjin, China
| | - Yufei Wang
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, China.,Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Tianjin, China
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28
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Tong X, Ga L, Zhao R, Ai J. Research progress on the applications of paper chips. RSC Adv 2021; 11:8793-8820. [PMID: 35423393 PMCID: PMC8695313 DOI: 10.1039/d0ra10470a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 01/29/2021] [Indexed: 01/12/2023] Open
Abstract
Due to the modern pursuit of the quality of life, science and technology have rapidly developed, resulting in higher requirements for various detection methods based on analytical technology. Herein, the development, fabrication, detection and application of paper-based microfluidic chips (μPAD) are summarized. We aim to provide a comprehensive understanding of paper chips, and then discuss challenges and future prospects in this field.
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Affiliation(s)
- Xin Tong
- College of Chemistry and Enviromental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University 81 zhaowudalu Hohhot 010022 China
| | - Lu Ga
- College of Pharmacy, Inner Mongolia Medical University, Jinchuankaifaqu Hohhot 010110 China
| | - Ruiguo Zhao
- College of Chemistry and Chemical Engineering of Inner Mongolia University Hohhot 010020 China
| | - Jun Ai
- College of Chemistry and Enviromental Science, Inner Mongolia Key Laboratory of Green Catalysis, Inner Mongolia Normal University 81 zhaowudalu Hohhot 010022 China
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29
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Al Sulaiman D, Shapiro SJ, Gomez-Marquez J, Doyle PS. High-Resolution Patterning of Hydrogel Sensing Motifs within Fibrous Substrates for Sensitive and Multiplexed Detection of Biomarkers. ACS Sens 2021; 6:203-211. [PMID: 33351603 DOI: 10.1021/acssensors.0c02121] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
There has been an increasing and urgent demand to develop nucleic acid bioassays which not only offer high analytical performance but which are also amenable with point-of-care testing. Hydrogels present a versatile class of materials with biocompatible antifouling properties and the ability to be engineered for a range of advanced sensing applications. Fibrous substrates like nitrocellulose offer low-cost and durable platforms to run complex bioassays while enabling portability and ease of handling. We demonstrate herein the ability to synergistically combine these two materials into a portable biosensing platform by leveraging projection lithography. We demonstrate the direct polymerization of hydrogel sensing motifs within a range of fibrous substrates with precise control over their shape, size, location, and functionality. Spatial encoding of the hydrogel motifs enables the multiplex detection of multiple biomarkers on the same test. As a proof-of-concept, we apply the platform to the detection of microRNA, an emerging class of circulating biomarkers with promising potential for early diagnosis and monitoring of cancer. The assay offers a large dynamic range (over three orders of magnitude), high sensitivity (limit of detection of 2.5 amol), as well as versatility and ease of handling. Finally, the bioassay is validated using real biological samples, namely, total RNA extracted from the sera of late-stage breast cancer patients, demonstrating its utility and compatibility with clinical biosensing applications.
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Affiliation(s)
- Dana Al Sulaiman
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Sarah J. Shapiro
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jose Gomez-Marquez
- Little Devices Lab, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Patrick S. Doyle
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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30
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Abbaspour N, Beltrame P, Néel MC, Schulz VP. Directional Water Wicking on a Metal Surface Patterned by Microchannels. MATERIALS (BASEL, SWITZERLAND) 2021; 14:490. [PMID: 33498578 PMCID: PMC7864331 DOI: 10.3390/ma14030490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 11/26/2022]
Abstract
This work focuses on the simulation and experimental study of directional wicking of water on a surface structured by open microchannels. Stainless steel was chosen as the material for the structure motivated by industrial applications as fuel cells. Inspired by nature and literature, we designed a fin type structure. Using Selective Laser Melting (SLM) the fin type structure was manufactured additively with a resolution down to about 30 μm. The geometry was manufactured with three different scalings and both the experiments and the simulation show that the efficiency of the water transport depends on dimensionless numbers such as Reynolds and Capillary numbers. Full 3D numerical simulations of the multiphase Navier-Stokes equations using Volume of Fluid (VOF) and Lattice-Boltzmann (LBM) methods reproduce qualitatively the experimental results and provide new insight into the details of dynamics at small space and time scales. The influence of the static contact angle on the directional wicking was also studied. The simulation enabled estimation of the contact angle threshold beyond which transport vanishes in addition to the optimal contact angle for transport.
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Affiliation(s)
- Nima Abbaspour
- UMR1114 EMMAH INRAE—Avignon Université, F-84914 Avignon, France;
| | | | | | - Volker P. Schulz
- Department of Mechanical Engineering, Baden-Württemberg Cooperative State University Mannheim, Coblitzallee 1-9, D-68163 Mannheim, Germany;
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31
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Loew N, Shitanda I, Kishiro K, Hoshi Y, Itagaki M. Paper-based Electrochemical Flow Biosensor Using Enzyme-modified Polystyrene Particles. CHEM LETT 2021. [DOI: 10.1246/cl.200703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Noya Loew
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Isao Shitanda
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Kanako Kishiro
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yoshinao Hoshi
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Masayuki Itagaki
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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Jeong SG, Ganguly R, Lee CS. Novel Materials and Fabrication Techniques for Paper-Based Devices. Bioanalysis 2021. [DOI: 10.1007/978-981-15-8723-8_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Dabbagh SR, Becher E, Ghaderinezhad F, Havlucu H, Ozcan O, Ozkan M, Yetisen AK, Tasoglu S. Increasing the packing density of assays in paper-based microfluidic devices. BIOMICROFLUIDICS 2021; 15:011502. [PMID: 33569089 PMCID: PMC7864678 DOI: 10.1063/5.0042816] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 01/07/2021] [Indexed: 05/04/2023]
Abstract
Paper-based devices have a wide range of applications in point-of-care diagnostics, environmental analysis, and food monitoring. Paper-based devices can be deployed to resource-limited countries and remote settings in developed countries. Paper-based point-of-care devices can provide access to diagnostic assays without significant user training to perform the tests accurately and timely. The market penetration of paper-based assays requires decreased device fabrication costs, including larger packing density of assays (i.e., closely packed features) and minimization of assay reagents. In this review, we discuss fabrication methods that allow for increasing packing density and generating closely packed features in paper-based devices. To ensure that the paper-based device is low-cost, advanced fabrication methods have been developed for the mass production of closely packed assays. These emerging methods will enable minimizing the volume of required samples (e.g., liquid biopsies) and reagents in paper-based microfluidic devices.
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Affiliation(s)
| | - Elaina Becher
- Department of Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Fariba Ghaderinezhad
- Department of Mechanical Engineering, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Hayati Havlucu
- Koç University Arçelik Research Center for Creative Industries (KUAR), Koç University, Sariyer, Istanbul 34450, Turkey
| | - Oguzhan Ozcan
- Koç University Arçelik Research Center for Creative Industries (KUAR), Koç University, Sariyer, Istanbul 34450, Turkey
| | - Mehmed Ozkan
- Boğaziçi Institute of Biomedical Engineering, Boğaziçi University, Çengelköy, Istanbul 34684, Turkey
| | - Ali Kemal Yetisen
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
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Patil Y, Dotseth K, Shapiro T, Pushparajan D, Binderup S, Horn JR, Korampally V. Modular design of paper based switches for autonomous lab-on paper micro devices. Biomed Microdevices 2020; 23:1. [PMID: 33247780 DOI: 10.1007/s10544-020-00537-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/11/2020] [Indexed: 02/01/2023]
Abstract
This paper presents a new approach towards the design of paper based autonomous microfluidic devices. Autonomy in the device operation is achieved through the incorporation of mechanically actuated microfluidic switches that are versatile in their design and may be configured to be simple time triggered ON or OFF switches or more complex switches that can be timed to be in multiple states (timed ON, followed by timed OFF). These switches are self-contained and require no external power for their operation, deriving their functionality solely through stored elastic energy. This paper presents the design and fabrication of these switches as fluidic analogs of electronic transistors, and their integration into microfluidic paper based circuit demonstrating their operation as a programmable paper-based microfluidic device.
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Affiliation(s)
- Yashodeep Patil
- Department of Electrical Engineering, Northern Illinois University, EB 340, DeKalb, IL, 60115, USA
| | - Kevin Dotseth
- Department of Electrical Engineering, Northern Illinois University, EB 340, DeKalb, IL, 60115, USA
| | - Theodore Shapiro
- Department of Electrical Engineering, Northern Illinois University, EB 340, DeKalb, IL, 60115, USA
| | - Dhakshenan Pushparajan
- Department of Electrical Engineering, Northern Illinois University, EB 340, DeKalb, IL, 60115, USA
| | - Stephen Binderup
- Department of Electrical Engineering, Northern Illinois University, EB 340, DeKalb, IL, 60115, USA
| | - James R Horn
- Department of Biochemistry, Northern Illinois University, DeKalb, IL, USA
| | - Venumadhav Korampally
- Department of Electrical Engineering, Northern Illinois University, EB 340, DeKalb, IL, 60115, USA.
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Parween S, Bhatnagar I, Bhosale S, Paradkar S, Michael IJ, Rao CM, Asthana A. Cross-linked chitosan biofunctionalized paper-based microfluidic device towards long term stabilization of blood typing antibodies. Int J Biol Macromol 2020; 163:1233-1239. [DOI: 10.1016/j.ijbiomac.2020.07.075] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/24/2020] [Accepted: 07/08/2020] [Indexed: 10/23/2022]
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Zargaryan A, Farhoudi N, Haworth G, Ashby JF, Au SH. Hybrid 3D printed-paper microfluidics. Sci Rep 2020; 10:18379. [PMID: 33110199 PMCID: PMC7591913 DOI: 10.1038/s41598-020-75489-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 10/08/2020] [Indexed: 11/13/2022] Open
Abstract
3D printed and paper-based microfluidics are promising formats for applications that require portable miniaturized fluid handling such as point-of-care testing. These two formats deployed in isolation, however, have inherent limitations that hamper their capabilities and versatility. Here, we present the convergence of 3D printed and paper formats into hybrid devices that overcome many of these limitations, while capitalizing on their respective strengths. Hybrid channels were fabricated with no specialized equipment except a commercial 3D printer. Finger-operated reservoirs and valves capable of fully-reversible dispensation and actuation were designed for intuitive operation without equipment or training. Components were then integrated into a versatile multicomponent device capable of dynamic fluid pathing. These results are an early demonstration of how 3D printed and paper microfluidics can be hybridized into versatile lab-on-chip devices.
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Affiliation(s)
- Arthur Zargaryan
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - Nathalie Farhoudi
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - George Haworth
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - Julian F Ashby
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK
| | - Sam H Au
- Department of Bioengineering, Imperial College London, London, SW7 2AZ, UK.
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Wang CM, Chen CY, Liao WS. Enclosed paper-based analytical devices: Concept, variety, and outlook. Anal Chim Acta 2020; 1144:158-174. [PMID: 33453793 DOI: 10.1016/j.aca.2020.10.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 09/23/2020] [Accepted: 10/06/2020] [Indexed: 01/19/2023]
Abstract
Paper-based analytical devices possess desirable properties such as low cost, convenient production, and rapid output. These advantages over conventional analytical devices have attracted tremendous attention in recent years, and an abundance of fabrication techniques have been achieved with different designs. Related approaches are adopted by scientists and engineers from different research fields to create practical devices tailored for various applications. Among a diverse selection of strategies, paper-based analytical devices featuring enclosed channels can protect its contents from environmental harm, which is helpful in designing paper-based devices aimed toward practical use. However, superior properties of enclosed device designs have often been neglected when a paper-based platform is selected, and related discussion is still lacking in the field. To fill this empty space in the relevant literature, important issues are highlighted and recent research achievements are included in this article, which should have implication for scientists interested in sensing technology, analytical chemistry, material science, and miniaturized devices. For the convenience of reader's understanding, this article provides a general introduction to the basic properties and concepts of paper-based analytical devices. Firstly, commonly used fabrication strategies and detection methods are mentioned, with an in-depth emphasis on paper-based devices with enclosed channels, including breakthroughs in device types, thoughts on novel fabrication, and practical application examples. Subsequently, other important topics related to enclosed paper-based device design are summarized, and future challenges and opportunities in the field are also discussed.
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Affiliation(s)
- Chang-Ming Wang
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Chong-You Chen
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Wei-Ssu Liao
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan.
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Murray LP, Mace CR. Usability as a guiding principle for the design of paper-based, point-of-care devices - A review. Anal Chim Acta 2020; 1140:236-249. [PMID: 33218486 DOI: 10.1016/j.aca.2020.09.063] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 09/28/2020] [Accepted: 09/30/2020] [Indexed: 12/14/2022]
Abstract
Due to their portability, versatility for supporting multiple assay formats, and potential for resulting in low-cost assays, paper-based analytical devices (PADs) are an increasingly popular format as a platform for the development of point-of-care tests. However, very few PADs have been translated successfully to their intended environments outside of academic settings. Often overlooked as a factor that inhibits translation, usability is a vital characteristic of any successful point-of-care test. Recent advancements in PAD design have demonstrated improved usability by simplifying various aspects of user operation, including sample collection, sample processing, device operation, detection, and readout/interpretation. Field testing at various stages of device design can offer critical feedback about device usability, especially when it involves the proposed end-user or other stakeholders. By highlighting advances in usability, we aim to encourage thoughtful and rigorous design at the academic prototyping stage to address one outstanding hurdle that limits the number of PADs that make it from the benchtop to the point-of-care.
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Affiliation(s)
- Lara P Murray
- Department of Chemistry, Tufts University, Medford, MA, 02155, USA
| | - Charles R Mace
- Department of Chemistry, Tufts University, Medford, MA, 02155, USA.
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Shay T, Saha T, Dickey MD, Velev OD. Principles of long-term fluids handling in paper-based wearables with capillary-evaporative transport. BIOMICROFLUIDICS 2020; 14:034112. [PMID: 32566070 PMCID: PMC7286699 DOI: 10.1063/5.0010417] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 05/11/2020] [Indexed: 05/24/2023]
Abstract
We construct and investigate paper-based microfluidic devices, which model long-term fluid harvesting, transport, sensing, and analysis in new wearables for sweat analysis. Such devices can continuously wick fluid mimicking sweat and dispose of it on evaporation pads. We characterize and analyze how the action of capillarity and evaporation can cooperatively be used to transport and process sweat mimics containing dissolved salts and model analytes. The results point out that non-invasive osmotic extraction combined with paper microfluidics and evaporative disposal can enable sweat collection and monitoring for durations longer than 10 days. We model the fluid flow in the new capillary-evaporative devices and identify the parameters enabling their long-term operation. We show that the transport rates are sufficiently large to handle natural sweat rates, while we envision that such handling can be interfaced with osmotic harvesting of sweat, a concept that we demonstrated recently. Finally, we illustrate that the salt film deposited at the evaporation pad would eventually lead to cessation of the process but at the same time will preserve a record of analytes that may be used for long-term biomarker monitoring in sweat. These principles can be implemented in future platforms for wearable skin-interfacing assays or electronic biomarker monitors.
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Affiliation(s)
- Timothy Shay
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, USA
| | - Tamoghna Saha
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, USA
| | - Michael D. Dickey
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, USA
| | - Orlin D. Velev
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695-7905, USA
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40
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Arango Y, Temiz Y, Gökçe O, Delamarche E. Electro-actuated valves and self-vented channels enable programmable flow control and monitoring in capillary-driven microfluidics. SCIENCE ADVANCES 2020; 6:eaay8305. [PMID: 32494605 PMCID: PMC7250678 DOI: 10.1126/sciadv.aay8305] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 01/22/2020] [Indexed: 05/14/2023]
Abstract
Microfluidics are essential for many lab-on-a-chip applications, but it is still challenging to implement a portable and programmable device that can perform an assay protocol autonomously when used by a person with minimal training. Here, we present a versatile concept toward this goal by realizing programmable liquid circuits where liquids in capillary-driven microfluidic channels can be controlled and monitored from a smartphone to perform various advanced tasks of liquid manipulation. We achieve this by combining electro-actuated valves (e-gates) with passive capillary valves and self-vented channels. We demonstrate the concept by implementing a 5-mm-diameter microfluidic clock, a chip to control four liquids using 100 e-gates with electronic feedback, and designs to deliver and merge multiple liquids sequentially or in parallel in any order and combination. This concept is scalable, compatible with high-throughput manufacturing, and can be adopted in many microfluidics-based assays that would benefit from precise and easy handling of liquids.
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41
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Ansari N, Trambadiya N, Lodha A, Menon SK. A portable microfluidic paper-based analytical device for blood detection and typing assay. AUST J FORENSIC SCI 2020. [DOI: 10.1080/00450618.2020.1740321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Niha Ansari
- Institute of Forensic Science, Gujarat Forensic Science University, Gadhinagar, India
| | - Nehal Trambadiya
- Department of Forensic Science, School of Sciences, Gujarat University, Ahmedabad, India
| | - Anand Lodha
- Department of Forensic Science, School of Sciences, Mody University of Science and Technology, Sikar, India
| | - S. K. Menon
- Department of Forensic Science, School of Sciences, Gujarat University, Ahmedabad, India
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42
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Kim TH, Hahn YK, Kim MS. Recent Advances of Fluid Manipulation Technologies in Microfluidic Paper-Based Analytical Devices (μPADs) toward Multi-Step Assays. MICROMACHINES 2020; 11:mi11030269. [PMID: 32143468 PMCID: PMC7142896 DOI: 10.3390/mi11030269] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 02/27/2020] [Accepted: 03/03/2020] [Indexed: 12/16/2022]
Abstract
Microfluidic paper-based analytical devices (μPADs) have been suggested as alternatives for developing countries with suboptimal medical conditions because of their low diagnostic cost, high portability, and disposable characteristics. Recently, paper-based diagnostic devices enabling multi-step assays have been drawing attention, as they allow complicated tests, such as enzyme-linked immunosorbent assay (ELISA) and polymerase chain reaction (PCR), which were previously only conducted in the laboratory, to be performed on-site. In addition, user convenience and price of paper-based diagnostic devices are other competitive points over other point-of-care testing (POCT) devices, which are more critical in developing countries. Fluid manipulation technologies in paper play a key role in realizing multi-step assays via μPADs, and the expansion of biochemical applications will provide developing countries with more medical benefits. Therefore, we herein aimed to investigate recent fluid manipulation technologies utilized in paper-based devices and to introduce various approaches adopting several principles to control fluids on papers. Fluid manipulation technologies are classified into passive and active methods. While passive valves are structurally simple and easy to fabricate, they are difficult to control in terms of flow at a specific spatiotemporal condition. On the contrary, active valves are more complicated and mostly require external systems, but they provide much freedom of fluid manipulation and programmable operation. Both technologies have been revolutionized in the way to compensate for their limitations, and their advances will lead to improved performance of μPADs, increasing the level of healthcare around the world.
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Affiliation(s)
| | - Young Ki Hahn
- Biomedical Convergence Science & Technology, Industrial Technology Advances, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, Korea
- Correspondence: (Y.K.H.); (M.S.K.); Tel.: +82-53-950-2338 (Y.K.H.); +82-53-785-1740 (M.S.K.)
| | - Minseok S. Kim
- Department of New Biology, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno jungang-daero, Daegu 42988, Korea
- Correspondence: (Y.K.H.); (M.S.K.); Tel.: +82-53-950-2338 (Y.K.H.); +82-53-785-1740 (M.S.K.)
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Shen L, Zhang G, Etzold BJM. Paper-Based Microfluidics for Electrochemical Applications. ChemElectroChem 2020; 7:10-30. [PMID: 32025468 PMCID: PMC6988477 DOI: 10.1002/celc.201901495] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 10/31/2019] [Indexed: 12/16/2022]
Abstract
Paper-based microfluidics is characteristic of fluid transportation through spontaneous capillary action of paper and has exhibited great promise for a variety of applications especially for sensing. Furthermore, paper-based microfluidics enables the design of miniaturized electrochemical devices to be applied in the energy sector, which is especially attractive for the rapid growing market of small size disposable electronics. This review gives a brief summary on the basics of paper chemistry and capillary-driven microfluidic behavior, and highlights recent advances of paper-based microfluidics in developing electrochemical sensing devices and miniaturized energy storage/conversion devices. Their structural features, working principles and exemplary applications are comprehensively elaborated and discussed. Additionally, this review also points out the existing challenges and future opportunities of paper-based microfluidic electronics.
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Affiliation(s)
- Liu‐Liu Shen
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Department of ChemistryTechnische Universität DarmstadtAlarich-Weiss-Straße 864287DarmstadtGermany
| | - Gui‐Rong Zhang
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Department of ChemistryTechnische Universität DarmstadtAlarich-Weiss-Straße 864287DarmstadtGermany
| | - Bastian J. M. Etzold
- Ernst-Berl-Institut für Technische und Makromolekulare Chemie, Department of ChemistryTechnische Universität DarmstadtAlarich-Weiss-Straße 864287DarmstadtGermany
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Marques AC, Pinheiro T, Martins GV, Cardoso AR, Martins R, Sales MG, Fortunato E. Non-enzymatic lab-on-paper devices for biosensing applications. COMPREHENSIVE ANALYTICAL CHEMISTRY 2020. [DOI: 10.1016/bs.coac.2020.05.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Almasvandi Z, Vahidinia A, Heshmati A, Zangeneh MM, Goicoechea HC, Jalalvand AR. Coupling of digital image processing and three-way calibration to assist a paper-based sensor for determination of nitrite in food samples. RSC Adv 2020; 10:14422-14430. [PMID: 35498492 PMCID: PMC9051906 DOI: 10.1039/c9ra10918h] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Accepted: 04/01/2020] [Indexed: 12/24/2022] Open
Abstract
In this work, a novel and very interesting analytical methodology based on coupling of digital image processing and three-way calibration has been developed for determination of nitrite in food samples.
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Affiliation(s)
- Zohreh Almasvandi
- Department of Nutrition and Food Hygiene
- School of Medicine
- Hamadan University of Medical Sciences
- Hamadan
- Iran
| | - Ali Vahidinia
- Department of Nutrition and Food Hygiene
- School of Medicine
- Hamadan University of Medical Sciences
- Hamadan
- Iran
| | - Ali Heshmati
- Department of Nutrition and Food Hygiene
- School of Medicine
- Hamadan University of Medical Sciences
- Hamadan
- Iran
| | | | - Hector C. Goicoechea
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ)
- Catedra de Química Analítica I
- Universidad Nacional del Litoral
- Ciudad Universitaria
- Santa Fe
| | - Ali R. Jalalvand
- Research Center of Oils and Fats
- Kermanshah University of Medical Sciences
- Kermanshah
- Iran
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Guan Y, Sun B. Detection and extraction of heavy metal ions using paper-based analytical devices fabricated via atom stamp printing. MICROSYSTEMS & NANOENGINEERING 2020; 6:14. [PMID: 34567629 PMCID: PMC8433178 DOI: 10.1038/s41378-019-0123-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 10/24/2019] [Accepted: 11/04/2019] [Indexed: 05/23/2023]
Abstract
As a promising concept, microfluidic paper-based analytical devices (μPADs) have seen rapid development in recent years. In this study, a new method of fabricating μPADs by atom stamp printing (ASP) is proposed and studied. The advantages of this new method compared to other methods include its low cost, ease of operation, high production efficiency, and high resolution (the minimum widths of the hydrophilic channels and hydrophobic barriers are 328 and 312 μm, respectively). As a proof of concept, μPADs fabricated with the ASP method were used to detect different concentrations of Cu2+ via a colorimetric method. Moreover, combined with a distance-based detection method, these devices achieved a Cu2+ detection limit of down to 1 mg/L. In addition, a new paper-based solid-liquid extraction device (PSED) based on a three-dimensional (3D) μPAD with a "3 + 2" structure and a recyclable extraction mode was developed. Specifically, using the characteristics of paper filtration and capillary force, the device completed multiple extraction and filtration steps from traditional solid-liquid extraction processes with high efficiency. The developed PSED platform allows the detection of heavy metal ions much more cheaply and simply and with a faster response time at the point of care, and it has great promise for applications in food safety and environmental pollution in resource-limited areas.
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Affiliation(s)
- Yanfang Guan
- School of Electromechanical Engineering, Henan University of technology, Zhengzhou, 450001 China
| | - Baichuan Sun
- School of Electromechanical Engineering, Henan University of technology, Zhengzhou, 450001 China
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Lai YT, Tsai CH, Hsu JC, Lu YW. Microfluidic Time-Delay Valve Mechanism on Paper-Based Devices for Automated Competitive ELISA. MICROMACHINES 2019; 10:E837. [PMID: 31801238 PMCID: PMC6953116 DOI: 10.3390/mi10120837] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 11/25/2019] [Accepted: 11/28/2019] [Indexed: 02/07/2023]
Abstract
Paper-based technologies have been drawing increasing attentions in the biosensor field due to their economical, ecofriendly, and easy-to-fabricate features. In this paper, we present a time-delay valve mechanism to automate a series of procedures for conducting competitive enzyme-linked immunosorbent assay (ELISA) on a paper-based device. The mechanism employs a controllable time-delay valve, which has surfactants to dissolve the hydrophobic barriers, in a fluid pathway. The valves can regulate the liquid and sequentially deliver the sample flow for automating ELISA procedures in microchannels. Competitive ELISA is achieved in a single step once the sample, or small molecule pesticide (e.g., Imidacloprid), is applied onto the paper-based device with a comparable sensitivity to plate-based competitive ELISA. The results further demonstrate the appositeness of using paper-based devices with the valve designs for on-the-go ELISA detection in agriculture and biomedical applications.
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Affiliation(s)
- Yu-Ting Lai
- Department of Biomechatronics Engineering, National Taiwan University, Taipei 10016, Taiwan;
| | - Chia-Hsin Tsai
- Department of Entomology, National Taiwan University, Taipei 10016, Taiwan; (C.-H.T.); (J.-C.H.)
| | - Ju-Chun Hsu
- Department of Entomology, National Taiwan University, Taipei 10016, Taiwan; (C.-H.T.); (J.-C.H.)
| | - Yen-Wen Lu
- Department of Biomechatronics Engineering, National Taiwan University, Taipei 10016, Taiwan;
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Kolluru C, Gupta R, Jiang Q, Williams M, Gholami Derami H, Cao S, Noel RK, Singamaneni S, Prausnitz MR. Plasmonic Paper Microneedle Patch for On-Patch Detection of Molecules in Dermal Interstitial Fluid. ACS Sens 2019; 4:1569-1576. [PMID: 31070358 DOI: 10.1021/acssensors.9b00258] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Minimally invasive devices to detect molecules in dermal interstitial fluid (ISF) are desirable for point-of-care diagnostic and monitoring applications. In this study, we developed a microneedle (MN) patch that collects ISF for on-patch biomarker analysis by surface-enhanced Raman scattering (SERS). The micrometer-scale MNs create micropores in the skin surface, through which microliter quantities of ISF are collected onto plasmonic paper on the patch backing. The plasmonic paper was prepared by immobilizing poly(styrenesulfonate) (PSS) coated gold nanorods (AuNRs) on a thin strip of filter paper using plasmonic calligraphy. Negatively charged PSS was used to bind positively charged rhodamine 6G (R6G), which served as a model compound, and thereby localize R6G on AuNR surface. R6G bound on the AuNR surface was detected and quantified by acquiring SERS spectra from the plasmonic paper MN patch. This approach was used to measure pharmacokinetic profiles of R6G in ISF and serum from rats in vivo. This proof-of-concept study indicates that a plasmonic paper MN patch has the potential to enable on-patch measurement of molecules in ISF for research and future medical applications.
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Affiliation(s)
- Chandana Kolluru
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332, United States
| | - Rohit Gupta
- Institute of Materials Science and Engineering, Washington University, 1 Brookings Drive, St. Louis, Missouri 63130, United States
| | - Qisheng Jiang
- Institute of Materials Science and Engineering, Washington University, 1 Brookings Drive, St. Louis, Missouri 63130, United States
| | - Mikayla Williams
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30332, United States
| | - Hamed Gholami Derami
- Institute of Materials Science and Engineering, Washington University, 1 Brookings Drive, St. Louis, Missouri 63130, United States
| | - Sisi Cao
- Institute of Materials Science and Engineering, Washington University, 1 Brookings Drive, St. Louis, Missouri 63130, United States
| | - Richard K. Noel
- Physiological Research Laboratory, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, Georgia 30332, United States
| | - Srikanth Singamaneni
- Institute of Materials Science and Engineering, Washington University, 1 Brookings Drive, St. Louis, Missouri 63130, United States
| | - Mark R. Prausnitz
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30332, United States
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Potter J, Brisk P, Grover WH. Using printer ink color to control the behavior of paper microfluidics. LAB ON A CHIP 2019; 19:2000-2008. [PMID: 31049521 DOI: 10.1039/c9lc00083f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Paper microfluidic devices (including lateral flow assays) offer an excellent combination of utility and low cost. Many paper microfluidic devices are fabricated using the Xerox ColorQube line of commercial wax-based color printers; the wax ink serves as a hydrophobic barrier to fluid flow. These printers are capable of depositing four different colors of ink, cyan (C), magenta (M), yellow (Y), and black (K), plus 11 combinations of these colors (CM, CY, CK, MY, MK, YK, CMY, CMK, CYK, MYK, and CMYK), although most researchers use only black ink to print paper microfluidic devices. Recently, as part of a project to develop a computer-aided design framework for use with paper microfluidics devices, we unexpectedly observed that different colors of wax ink behave differently in paper microfluidics. We found that among the single colors of ink, black ink actually had the most barrier failures, and magenta ink had the fewest barrier failures. In addition, some combinations of colors performed even better than magenta: the combinations CY, MK, YK, CMY, CYK and MYK had no barrier failures in our study. We also found that the printer delivers significantly different amounts of ink to the paper for the different color combinations, and in general, the color combinations that formed the strongest barriers to fluid flow were the ones that had the most ink delivered to the paper. This suggests that by simply weighing paper samples printed with all 15 combinations of colors, one can easily find the color combinations most likely to form a strong barrier for a given printer. Finally, to show that deliberate choices of ink colors can actually be used to create new functions in paper microfluidics, we designed and tested a new color-based "antifuse" structure that protects paper microfluidic devices from a typical operator error (addition of too much fluid to the device). Our results provide a set of color choice guidelines that designers can use to control the behavior of their paper microfluidics.
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Affiliation(s)
- Joshua Potter
- Department of Computer Science and Engineering, University of California, Riverside, CA 92521, USA
| | - Philip Brisk
- Department of Computer Science and Engineering, University of California, Riverside, CA 92521, USA
| | - William H Grover
- Department of Bioengineering, University of California, Riverside, CA 92521, USA.
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