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Xue Z, Patel K, Bhatia P, Miller CL, Shergill RS, Patel BA. 3D-Printed Microelectrodes for Biological Measurement. Anal Chem 2024; 96:12701-12709. [PMID: 39039062 DOI: 10.1021/acs.analchem.4c01585] [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: 07/24/2024]
Abstract
Microelectrodes are useful electrochemical sensors that can provide spatial biological monitoring. Carbon fiber has been by far the most widely used microelectrode; however, a vast number of different materials and modification strategies have been developed to broaden the scope of microelectrodes. Carbon composite electrodes provide a simple approach to making microelectrodes with a wide range of materials, but manufacturing strategies are complex. 3D printing can provide the ability to make microelectrodes with high precision. We used fused filament fabrication to print single strands of carbon black/polylactic acid (CB/PLA) and multiwall carbon nanotube/polylactic acid (MWCNT/PLA), which were then made into microelectrodes. Microelectrodes ranged from 70 μm in diameter to 400 μm in diameter and were assessed using standard redox probes. MWCNT/PLA electrodes exhibited greater sensitivity, a lower limit of detection, and stability for the measurement of serotonin (5-HT). Both CB/PLA and MWCNT/PLA microelectrodes were able to monitor 5-HT overflow from the ex vivo ileum tissue. MWCNT/PLA microelectrodes were utilized to show differences in 5-HT overflow from ex vivo ileum and colon following exposure to odorants present in spices. These findings highlight that any conductive thermoplastic material can be fabricated into a microelectrode. This simple strategy can utilize a wide range of materials to make 3D-printed microelectrodes for a diverse range of applications.
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Affiliation(s)
- Zehao Xue
- School of Applied Sciences, University of Brighton, Brighton, East Sussex BN2 4GJ, U.K
| | - Kanisha Patel
- School of Applied Sciences, University of Brighton, Brighton, East Sussex BN2 4GJ, U.K
| | - Paankhuri Bhatia
- School of Applied Sciences, University of Brighton, Brighton, East Sussex BN2 4GJ, U.K
| | - Chloe L Miller
- School of Applied Sciences, University of Brighton, Brighton, East Sussex BN2 4GJ, U.K
- Centre for Lifelong Health, University of Brighton, Brighton, East Sussex BN2 4GJ, U.K
| | - Ricoveer Singh Shergill
- School of Applied Sciences, University of Brighton, Brighton, East Sussex BN2 4GJ, U.K
- Centre for Lifelong Health, University of Brighton, Brighton, East Sussex BN2 4GJ, U.K
| | - Bhavik Anil Patel
- School of Applied Sciences, University of Brighton, Brighton, East Sussex BN2 4GJ, U.K
- Centre for Lifelong Health, University of Brighton, Brighton, East Sussex BN2 4GJ, U.K
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Zilinskaite N, Shukla RP, Baradoke A. Use of 3D Printing Techniques to Fabricate Implantable Microelectrodes for Electrochemical Detection of Biomarkers in the Early Diagnosis of Cardiovascular and Neurodegenerative Diseases. ACS MEASUREMENT SCIENCE AU 2023; 3:315-336. [PMID: 37868357 PMCID: PMC10588936 DOI: 10.1021/acsmeasuresciau.3c00028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/25/2023] [Accepted: 08/25/2023] [Indexed: 10/24/2023]
Abstract
This Review provides a comprehensive overview of 3D printing techniques to fabricate implantable microelectrodes for the electrochemical detection of biomarkers in the early diagnosis of cardiovascular and neurodegenerative diseases. Early diagnosis of these diseases is crucial to improving patient outcomes and reducing healthcare systems' burden. Biomarkers serve as measurable indicators of these diseases, and implantable microelectrodes offer a promising tool for their electrochemical detection. Here, we discuss various 3D printing techniques, including stereolithography (SLA), digital light processing (DLP), fused deposition modeling (FDM), selective laser sintering (SLS), and two-photon polymerization (2PP), highlighting their advantages and limitations in microelectrode fabrication. We also explore the materials used in constructing implantable microelectrodes, emphasizing their biocompatibility and biodegradation properties. The principles of electrochemical detection and the types of sensors utilized are examined, with a focus on their applications in detecting biomarkers for cardiovascular and neurodegenerative diseases. Finally, we address the current challenges and future perspectives in the field of 3D-printed implantable microelectrodes, emphasizing their potential for improving early diagnosis and personalized treatment strategies.
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Affiliation(s)
- Nemira Zilinskaite
- Wellcome/Cancer
Research UK Gurdon Institute, Henry Wellcome Building of Cancer and
Developmental Biology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QN, U.K.
- Faculty
of Medicine, University of Vilnius, M. K. Čiurlionio g. 21, LT-03101 Vilnius, Lithuania
| | - Rajendra P. Shukla
- BIOS
Lab-on-a-Chip Group, MESA+ Institute for Nanotechnology, Max Planck
Center for Complex Fluid Dynamics, University
of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Ausra Baradoke
- Wellcome/Cancer
Research UK Gurdon Institute, Henry Wellcome Building of Cancer and
Developmental Biology, University of Cambridge, Tennis Court Road, Cambridge CB2 1QN, U.K.
- Faculty
of Medicine, University of Vilnius, M. K. Čiurlionio g. 21, LT-03101 Vilnius, Lithuania
- BIOS
Lab-on-a-Chip Group, MESA+ Institute for Nanotechnology, Max Planck
Center for Complex Fluid Dynamics, University
of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
- Center for
Physical Sciences and Technology, Savanoriu 231, LT-02300 Vilnius, Lithuania
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Ma S, Tian H, Fei J, Li H. Significant enhancement on the mechanical and tribological performances of paper‐based friction materials by designing silicone@
SiO
2
core‐shell structure. J Appl Polym Sci 2022. [DOI: 10.1002/app.52883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shanshan Ma
- State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials Northwestern Polytechnical University Xi'an China
| | - Haochen Tian
- State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials Northwestern Polytechnical University Xi'an China
| | - Jie Fei
- State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials Northwestern Polytechnical University Xi'an China
| | - Hejun Li
- State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Fiber Reinforced Light Composite Materials Northwestern Polytechnical University Xi'an China
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Abdalla A, Patel BA. 3D Printed Electrochemical Sensors. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2021; 14:47-63. [PMID: 33974807 DOI: 10.1146/annurev-anchem-091120-093659] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Three-dimensional (3D) printing has recently emerged as a novel approach in the development of electrochemical sensors. This approach to fabrication has provided a tremendous opportunity to make complex geometries of electrodes at high precision. The most widely used approach for fabrication is fused deposition modeling; however, other approaches facilitate making smaller geometries or expanding the range of materials that can be printed. The generation of complete analytical devices, such as electrochemical flow cells, provides an example of the array of analytical tools that can be developed. This review highlights the fabrication, design, preparation, and applications of 3D printed electrochemical sensors. Such developments have begun to highlight the vast potential that 3D printed electrochemical sensors can have compared to other strategies in sensor development.
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Affiliation(s)
- Aya Abdalla
- Centre for Stress and Age-Related Disease, University of Brighton, Brighton BN2 4GJ, United Kingdom; ,
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - Bhavik Anil Patel
- Centre for Stress and Age-Related Disease, University of Brighton, Brighton BN2 4GJ, United Kingdom; ,
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, United Kingdom
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Yang C, Hu K, Wang D, Zubi Y, Lee ST, Puthongkham P, Mirkin MV, Venton BJ. Cavity Carbon-Nanopipette Electrodes for Dopamine Detection. Anal Chem 2019; 91:4618-4624. [PMID: 30810304 PMCID: PMC6526101 DOI: 10.1021/acs.analchem.8b05885] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Microelectrodes are typically used for neurotransmitter detection, but nanoelectrodes are not because there is a trade-off between spatial resolution and sensitivity that is dependent on surface area. Cavity carbon-nanopipette electrodes (CNPEs), with tip diameters of a few hundred nanometers, have been developed for nanoscale electrochemistry. Here, we characterize the electrochemical performance of CNPEs with fast-scan cyclic voltammetry (FSCV) for the first time. Dopamine detection using cavity CNPEs, with a depth equivalent to a few radii, is compared with that using open-tube CNPEs, an essentially infinite geometry. Open-tube CNPEs have very slow temporal responses that change over time as the liquid rises in the CNPE. However, a cavity CNPE has a fast temporal response to a bolus of dopamine that is not different from that of a traditional carbon-fiber microelectrode. Cavity CNPEs, with tip diameters of 200-400 nm, have high currents because the small cavity traps and increases the local dopamine concentration. The trapping also leads to an FSCV frequency-independent response and the appearance of cyclization peaks that are normally observed only with large concentrations of dopamine. CNPEs have high dopamine selectivity over ascorbic acid (AA) because of the repulsion of AA by the negative electric field at the holding potential and the irreversible redox reaction. In mouse-brain slices, cavity CNPEs detected exogenously applied dopamine, showing they do not clog in tissue. Thus, cavity CNPEs are promising neurochemical sensors that provide spatial resolution on the scale of hundreds of nanometers, which is useful for small model organisms or for locations near specific cells.
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Affiliation(s)
- Cheng Yang
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904
| | - Keke Hu
- Department of Chemistry and Biochemistry, Queens College–CUNY, Flushing, New York 11367
- The Graduate Center of the City University of New York, New York, New York 10016
| | - Dengchao Wang
- Department of Chemistry and Biochemistry, Queens College–CUNY, Flushing, New York 11367
| | - Yasmine Zubi
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904
| | - Scott T. Lee
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904
| | | | - Michael V. Mirkin
- Department of Chemistry and Biochemistry, Queens College–CUNY, Flushing, New York 11367
- The Graduate Center of the City University of New York, New York, New York 10016
| | - B. Jill Venton
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904
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Yang C, Venton BJ. High Performance, Low Cost Carbon Nanotube Yarn based 3D Printed Electrodes Compatible with a Conventional Screen Printed Electrode System. ... IEEE INTERNATIONAL SYMPOSIUM ON MEDICAL MEASUREMENTS AND APPLICATIONS : PROCEEDINGS. IEEE INTERNATIONAL SYMPOSIUM ON MEDICAL MEASUREMENTS AND APPLICATIONS 2017; 2017:100-105. [PMID: 28890951 PMCID: PMC5589149 DOI: 10.1109/memea.2017.7985857] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
3D printing technology has been widely used as a rapid prototyping fabrication tool in several fields, including electrochemistry. In this work, we incorporate 3D printing technology with carbon nanotube yarns for electrochemical sensing of dopamine in the presence of ascorbic acid and uric acid. The novel 3D printed electrode provides a circular concavity detection zone with grooves to insert three electrodes. The electrode connections are fully compatible with conventional screen printed electrode workstation setups. The CNT yarn 3D printed electrode showed excellent electrocatalytic activity for the redox reaction of dopamine (DA) in the presence of ascorbic acid (AA) and uric acid (UA). Three well-defined sharp and fully resolved anodic peaks were found with the peak potentials using cyclic voltammetry (CV) at 50 mV, 305 mV, and 545 mV for AA, DA, and UA respectively and using differential pulse voltammetry (DPV) at 91 mV, 389 mV, and 569 mV, respectively. DA detection limit was 0.87 ± 0.09 μM. The CNT yarn 3D printed electrode displayed high reproducibility and stability. The electrode design enables the study of electrode reactions at the sidewall of CNTs, which cannot be performed using electrodes made by conventional fabrication methods. The new fabrication method provides a new platform to prototype new electrode materials for electrochemistry, providing a low-cost, customizable design compatible existing screen printed electrodes technology.
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Affiliation(s)
- Cheng Yang
- Department of Chemistry, University of Virginia, McCormick Road, Box 400319, Charlottesville, Virginia 22904-4319, United States
| | - B Jill Venton
- Department of Chemistry, University of Virginia, McCormick Road, Box 400319, Charlottesville, Virginia 22904-4319, United States
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Abstract
Recent progress in the electrochemical field enabled development of miniaturized sensing devices that can be used in biological settings to obtain fundamental and practical biochemically relevant information on physiology, metabolism, and disease states in living systems. Electrochemical sensors and biosensors have demonstrated potential for rapid, real-time measurements of biologically relevant molecules. This chapter provides an overview of the most recent advances in the development of miniaturized sensors for biological investigations in living systems, with focus on the detection of neurotransmitters and oxidative stress markers. The design of electrochemical (bio)sensors, including their detection mechanism and functionality in biological systems, is described as well as their advantages and limitations. Application of these sensors to studies in live cells, embryonic development, and rodent models is discussed.
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