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Rasekh M, Harrison S, Schobesberger S, Ertl P, Balachandran W. Reagent storage and delivery on integrated microfluidic chips for point-of-care diagnostics. Biomed Microdevices 2024; 26:28. [PMID: 38825594 DOI: 10.1007/s10544-024-00709-y] [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] [Accepted: 05/02/2024] [Indexed: 06/04/2024]
Abstract
Microfluidic-based point-of-care diagnostics offer several unique advantages over existing bioanalytical solutions, such as automation, miniaturisation, and integration of sensors to rapidly detect on-site specific biomarkers. It is important to highlight that a microfluidic POC system needs to perform a number of steps, including sample preparation, nucleic acid extraction, amplification, and detection. Each of these stages involves mixing and elution to go from sample to result. To address these complex sample preparation procedures, a vast number of different approaches have been developed to solve the problem of reagent storage and delivery. However, to date, no universal method has been proposed that can be applied as a working solution for all cases. Herein, both current self-contained (stored within the chip) and off-chip (stored in a separate device and brought together at the point of use) are reviewed, and their merits and limitations are discussed. This review focuses on reagent storage devices that could be integrated with microfluidic devices, discussing further issues or merits of these storage solutions in two different sections: direct on-chip storage and external storage with their application devices. Furthermore, the different microvalves and micropumps are considered to provide guidelines for designing appropriate integrated microfluidic point-of-care devices.
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Affiliation(s)
- Manoochehr Rasekh
- College of Engineering, Design and Physical Sciences, Brunel University London, Uxbridge, UB8 3PH, UK.
| | - Sam Harrison
- College of Engineering, Design and Physical Sciences, Brunel University London, Uxbridge, UB8 3PH, UK
| | - Silvia Schobesberger
- Faculty of Technical Chemistry, Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, 1060, Vienna, Austria
| | - Peter Ertl
- Faculty of Technical Chemistry, Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, 1060, Vienna, Austria
| | - Wamadeva Balachandran
- College of Engineering, Design and Physical Sciences, Brunel University London, Uxbridge, UB8 3PH, UK.
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Sharma M, Mazumder N, Ajayan PM, Deb P. Quantum enhanced efficiency and spectral performance of paper-based flexible photodetectors functionalized with two dimensional materials. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:283001. [PMID: 38574668 DOI: 10.1088/1361-648x/ad3abf] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 04/04/2024] [Indexed: 04/06/2024]
Abstract
Flexible photodetectors (PDs) have exotic significance in recent years due to their enchanting potential in future optoelectronics. Moreover, paper-based fabricated PDs with outstanding flexibility unlock new avenues for future wearable electronics. Such PD has captured scientific interest for its efficient photoresponse properties due to the extraordinary assets like significant absorptive efficiency, surface morphology, material composition, affordability, bendability, and biodegradability. Quantum-confined materials harness the unique quantum-enhanced properties and hold immense promise for advancing both fundamental scientific understanding and practical implication. Two-dimensional (2D) materials as quantum materials have been one of the most extensively researched materials owing to their significant light absorption efficiency, increased carrier mobility, and tunable band gaps. In addition, 2D heterostructures can trap charge carriers at their interfaces, leading increase in photocurrent and photoconductivity. This review represents comprehensive discussion on recent developments in such PDs functionalized by 2D materials, highlighting charge transfer mechanism at their interface. This review thoroughly explains the mechanism behind the enhanced performance of quantum materials across a spectrum of figure of merits including external quantum efficiency, detectivity, spectral responsivity, optical gain, response time, and noise equivalent power. The present review studies the intricate mechanisms that reinforce these improvements, shedding light on the intricacies of quantum materials and their significant capabilities. Moreover, a detailed analysis of the technical applicability of paper-based PDs has been discussed with challenges and future trends, providing comprehensive insights into their practical usage in the field of future wearable and portable electronic technologies.
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Affiliation(s)
- Monika Sharma
- Advanced Functional Material Laboratory (AFML), Department of Physics, Tezpur University, (Central University), Tezpur 784028, India
| | - Nirmal Mazumder
- Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Pulickel M Ajayan
- Department of Materials Science and Nano Engineering, Rice University, Houston, TX 77005, United States of America
| | - Pritam Deb
- Advanced Functional Material Laboratory (AFML), Department of Physics, Tezpur University, (Central University), Tezpur 784028, India
- Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
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Singh S, Raucci A, Cimmino W, Cinti S. Paper-Based Analytical Devices for Cancer Liquid Biopsy. Anal Chem 2024; 96:3698-3706. [PMID: 38377543 DOI: 10.1021/acs.analchem.3c04478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Liquid biopsies have caused a significant revolution in cancer diagnosis, and the use of point of care (PoC) platforms has the potential to bring liquid biopsy-based cancer detection closer to patients. These platforms provide rapid and on-site analysis by reducing the time between sample collection and results output. The aim of this tutorial content is to provide readers an in-depth understanding regarding the choice of the ideal sensing platform suitable for specific cancer-related biomarkers.
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Affiliation(s)
- Sima Singh
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - Ada Raucci
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - Wanda Cimmino
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
| | - Stefano Cinti
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy
- BAT Center- Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology, University of Napoli Federico II, 80055 Naples, Italy
- Bioelectronics Task Force at University of Naples Federico II, Via Cinthia 21, 80126 Naples, Italy
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Matsuura K. Editorial for the Special Issue on Microfluidic Device Fabrication and Cell Manipulation. MICROMACHINES 2024; 15:120. [PMID: 38258239 PMCID: PMC10819160 DOI: 10.3390/mi15010120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024]
Abstract
Microfluidic devices have been utilized for separation sciences, environmental sciences, food processing, drug delivery, bioimaging, diagnostics, and cell cultures [...].
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Affiliation(s)
- Koji Matsuura
- Department of Biosciences, Faculty of Life Science, Okayama University of Science, Okayama 700-0005, Japan
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Jamil SR, Abbasi MS, Jafry AT, Shahzad T, Sarwar S, Qureshi MH. Flow control by circular cavities in lateral flow porous membranes. Sci Prog 2024; 107:368504241235508. [PMID: 38426804 PMCID: PMC10908241 DOI: 10.1177/00368504241235508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
This research explores the flow penetration in porous media by virtue of capillary action and geometric control of the liquid imbibition rate in microfluidic paper-based analytical devices (μPADs) having applications in food quality management, medical diagnostics, and environmental monitoring. We examine changes in flow resistance and membrane geometry, aiming to understand factors influencing capillary penetration rates for various practical applications. We conducted experiments and simulations using lateral porous membranes and altered the flow resistance by changing the liquids or the paper channel geometry by adding cavities. From experiments, it was revealed that by creating a circular cavity in the paper channel, the penetration rate was sufficiently altered. Moreover, increasing the cavity size and type of liquid (w.r.t. viscosity) also caused a decrease in the flow rate. Imbibition rates were also influenced by the position of the cavities in the paper channel. The maximum delay for water was almost 2 times with a 16 mm circular cavity located at 3 cm from strip bottom edge. Overall, we attained a maximum delay in the case of castor oil which was almost 85 times slower than water and 3.7 times slower than olive oil. A good agreement was observed with CFD analysis. We believe that this research would help in developing advance techniques to enhance the flow control strategies in μPADs and indicators.
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Affiliation(s)
- Syed Rehman Jamil
- Faculty of Mechanical Engineering, University of Engineering and Technology, Lahore, Pakistan
| | - Muhammad Salman Abbasi
- Faculty of Mechanical Engineering, University of Engineering and Technology, Lahore, Pakistan
| | - Ali Turab Jafry
- Faculty of Mechanical Engineering, Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, Pakistan
| | - Tanveer Shahzad
- Faculty of Mechanical Engineering, University of Engineering and Technology, Lahore, Pakistan
| | - Shahid Sarwar
- Faculty of Mechanical Engineering, University of Engineering and Technology, Lahore, Pakistan
| | - Muhammad Hammad Qureshi
- Faculty of Mechanical Engineering, University of Engineering and Technology, Lahore, Pakistan
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Moon S. Extending the Shelf-Life of Immunoassay-Based Microfluidic Chips through Freeze-Drying Sublimation Techniques. SENSORS (BASEL, SWITZERLAND) 2023; 23:8524. [PMID: 37896617 PMCID: PMC10610996 DOI: 10.3390/s23208524] [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: 09/24/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023]
Abstract
Point-of-care testing (POCT) platforms utilizing immunoassay-based microfluidic chips offer a robust and specific method for detecting target antibodies, demonstrating a wide range of applications in various medical and research settings. Despite their versatility and specificity, the adoption of these immunoassay chips in POCT has been limited by their short shelf-life in liquid environments, attributed to the degradation of immobilized antibodies. This technical limitation presents a barrier, particularly for resource-limited settings where long-term storage and functionality are critical. To address this challenge, we introduce a novel freeze-dry sublimation process aimed at extending the shelf-life of these microfluidic chips without compromising their functional integrity. This study elaborates on the mechanisms by which freeze-drying preserves the bioactivity of the immobilized antibodies, thereby maintaining the chip's performance over an extended period. Our findings reveal significant shelf-life extension, making it possible for these POCT platforms to be more widely adopted and practically applied, especially in settings with limited resources. This research paves the way for more accessible, long-lasting, and effective POCT solutions, breaking down previous barriers to adoption and application.
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Affiliation(s)
- Sangjun Moon
- Department of Mechanical Convergence Engineering, Gyeongsang National University, Changwon 51391, Gyeongsangnam-do, Republic of Korea; ; Tel.: +82-55-250-7304; Fax: +82-55-250-7399
- Cybernetics Imaging Systems Co., Ltd., Changwon 51391, Gyeongsangnam-do, Republic of Korea
- Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
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Kumari R, Singh A, Azad UP, Chandra P. Insights into the Fabrication and Electrochemical Aspects of Paper Microfluidics-Based Biosensor Module. BIOSENSORS 2023; 13:891. [PMID: 37754125 PMCID: PMC10526938 DOI: 10.3390/bios13090891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/08/2023] [Accepted: 09/14/2023] [Indexed: 09/28/2023]
Abstract
Over the past ten years, microfluidic paper-based analytical devices (micro-PADs) have attracted a lot of attention as a viable analytical platform. It is expanding as a result of advances in manufacturing processes and device integration. Conventional microfluidics approaches have some drawbacks, including high costs, lengthy evaluation times, complicated fabrication, and the necessity of experienced employees. Hence, it is extremely important to construct a detection system that is quick, affordable, portable, and efficient. Nowadays, micro-PADs are frequently employed, particularly in electrochemical analyses, to replicate the classic standard laboratory experiments on a miniature paper chip. It has benefits like rapid assessment, small sample consumption, quick reaction, accuracy, and multiplex function. The goal of this review is to examine modern paper microfluidics-based electrochemical sensing devices for the detection of macromolecules, small molecules, and cells in a variety of real samples. The design and fabrication of micro-PADs using conventional and the latest techniques have also been discussed in detail. Lastly, the limitations and potential of these analytical platforms are examined in order to shed light on future research.
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Affiliation(s)
- Rohini Kumari
- Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU) Varanasi, Varanasi 221005, Uttar Pradesh, India; (R.K.); (A.S.)
| | - Akanksha Singh
- Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU) Varanasi, Varanasi 221005, Uttar Pradesh, India; (R.K.); (A.S.)
| | - Uday Pratap Azad
- Laboratory of Nanoelectrochemistry, Department of Chemistry, Guru Ghasidas Vishwavidyalaya (Central University), Bilaspur 495009, Chhattisgarh, India;
| | - Pranjal Chandra
- Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU) Varanasi, Varanasi 221005, Uttar Pradesh, India; (R.K.); (A.S.)
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Economou A, Kokkinos C, Bousiakou L, Hianik T. Paper-Based Aptasensors: Working Principles, Detection Modes, and Applications. SENSORS (BASEL, SWITZERLAND) 2023; 23:7786. [PMID: 37765843 PMCID: PMC10536119 DOI: 10.3390/s23187786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/31/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023]
Abstract
Aptamers are short oligonucleotides designed to possess high binding affinity towards specific target compounds (ions, molecules, or cells). Due to their function and unique advantages, aptamers are considered viable alternatives to antibodies as biorecognition elements in bioassays and biosensors. On the other hand, paper-based devices (PADs) have emerged as a promising and powerful technology for the fabrication of low-cost analytical tools, mainly intended for on-site and point-of-care applications. The present work aims to provide a comprehensive overview of paper-based aptasensors. The review describes the fabrication methods and working principles of paper-based devices, the properties of aptamers as bioreceptors, the different modes of detection used in conjunction with aptasensing PADs, and representative applications for the detection of ions, small molecules, proteins, and cells. The future challenges and prospects of these devices are also discussed.
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Affiliation(s)
- Anastasios Economou
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece;
| | - Christos Kokkinos
- Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece;
| | - Leda Bousiakou
- IMD Laboratories Co., R&D Section, Lefkippos Technology Park, National Centre for Scientific Research (NCSR) Demokritos, Agia Paraskevi, P.O. Box 60037, 15130 Athens, Greece;
| | - Tibor Hianik
- Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská dolina F1, 84248 Bratislava, Slovakia;
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Benjamin SR, de Lima F, Nascimento VAD, de Andrade GM, Oriá RB. Advancement in Paper-Based Electrochemical Biosensing and Emerging Diagnostic Methods. BIOSENSORS 2023; 13:689. [PMID: 37504088 PMCID: PMC10377443 DOI: 10.3390/bios13070689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/09/2023] [Accepted: 06/19/2023] [Indexed: 07/29/2023]
Abstract
The utilization of electrochemical detection techniques in paper-based analytical devices (PADs) has revolutionized point-of-care (POC) testing, enabling the precise and discerning measurement of a diverse array of (bio)chemical analytes. The application of electrochemical sensing and paper as a suitable substrate for point-of-care testing platforms has led to the emergence of electrochemical paper-based analytical devices (ePADs). The inherent advantages of these modified paper-based analytical devices have gained significant recognition in the POC field. In response, electrochemical biosensors assembled from paper-based materials have shown great promise for enhancing sensitivity and improving their range of use. In addition, paper-based platforms have numerous advantageous characteristics, including the self-sufficient conveyance of liquids, reduced resistance, minimal fabrication cost, and environmental friendliness. This study seeks to provide a concise summary of the present state and uses of ePADs with insightful commentary on their practicality in the field. Future developments in ePADs biosensors include developing novel paper-based systems, improving system performance with a novel biocatalyst, and combining the biosensor system with other cutting-edge tools such as machine learning and 3D printing.
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Affiliation(s)
- Stephen Rathinaraj Benjamin
- Drug Research and Development Center (NPDM), Federal University of Cearà, Fortaleza 60430-270, CE, Brazil
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Cearà, Fortaleza 60430-270, CE, Brazil
| | - Fábio de Lima
- Post Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul UFMS, Campo Grande 79070-900, MS, Brazil
| | - Valter Aragão do Nascimento
- Post Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul UFMS, Campo Grande 79070-900, MS, Brazil
| | - Geanne Matos de Andrade
- Drug Research and Development Center (NPDM), Federal University of Cearà, Fortaleza 60430-270, CE, Brazil
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Cearà, Fortaleza 60430-270, CE, Brazil
| | - Reinaldo Barreto Oriá
- Laboratory of the Biology of Tissue Healing, Ontogeny and Nutrition, Department of Morphology, Institute of Biomedicine, School of Medicine, Federal University of Cearà, Fortaleza 60430-270, CE, Brazil
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Lima ALD, Rocha PM, Silva AC, Alves Fernandes J, Martins CA. Interchangeable Biomass Fuels for Paper-Based Microfluidic Fuel Cells: Finding Their Power Density Limits. ACS APPLIED MATERIALS & INTERFACES 2023; 15:11895-11905. [PMID: 36848672 DOI: 10.1021/acsami.2c23192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Paper batteries are self-pumping emerging tools for powering portable analytical systems. These disposable energy converters must be low-cost and must achieve enough energy to power electronic devices. The challenge is reaching high energy while keeping the low cost. Here, for the first time, we report a paper-based microfluidic fuel cell (PμFC) equipped with Pt/C on a carbon paper (CP) anode and a metal-free CP cathode fed by biomass-derived fuels to deliver high power. The cells were engineered in a mixed-media configuration, where methanol, ethanol, ethylene glycol, or glycerol is electro-oxidized in an alkaline medium, while Na2S2O8 is reduced in an acidic medium. This strategy allows for optimizing each half-cell reaction independently. The colaminar channel of the cellulose paper was chemically investigated by mapping the composition, which reveals a majority of elements from the catholyte and anolyte on each respective side and a mixture of both at the interface, assuring the existing colaminar system. Moreover, the colaminar flow was studied by investigating the flow rate by considering recorded videos for the first time. All PμFCs show 150-200 s to build a stable colaminar flow, which matches the time to reach a stable open circuit voltage. The flow rate is similar for different concentrations of methanol and ethanol, but it decreases with the increase in ethylene glycol and glycerol concentrations, suggesting a longer residence time for the reactants. The cells perform differently for the different concentrations, and their limiting power densities are composed of a balance among anode poisoning, residence time, and viscosity of the liquids. The sustainable PμFCs can be interchangeably fed by the four biomass-derived fuels to deliver ∼2.2-3.9 mW cm-2. This allows choosing the proper fuel due to their availability. The unprecedented PμFC fed by ethylene glycol delivered 6.76 mW cm-2, which is the benchmark output power for a paper battery fed by alcohol.
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Affiliation(s)
- André L D Lima
- Electrochemistry Research Group, Institute of Physics, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil
- Department of Chemistry, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto 35400-000, Brazil
| | - Piter M Rocha
- Electrochemistry Research Group, Institute of Physics, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil
| | - Adilson C Silva
- Department of Chemistry, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto 35400-000, Brazil
| | | | - Cauê A Martins
- Electrochemistry Research Group, Institute of Physics, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, United Kingdom
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