Minipotentiostat controlled by smartphone on a micropipette: A versatile, portable, agile and accurate tool for electroanalysis

Barragan, José T.C.; Kubota, Lauro T.

doi:10.1016/j.electacta.2020.136048

Cited by 29 publications

(19 citation statements)

References 28 publications

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“…Cyclic voltammetry in a [Fe(CN) 6 ] 3–/4– solution is essential for validating the capacity of the equipment to conduct electrochemical techniques [ 8 , 10 , 13 , 16 , 24 ]. Therefore, this technique was used to compare Paqari Stat and a commercial potentiostat.…”

Section: Resultsmentioning

confidence: 99%

“…Open-source tools have helped develop this kind of educational, scientific instrumentation [ 14 , 15 ]. For instance, Arduino microcontroller boards have expanded the functionality of electronic-controlled potentiostats [ 13 , 16 ], allowing an increment in the number of methodologies addressed with these while maintaining an affordable price. The spread and the increasing capacity of smartphones have provided a portable and affordable platform for several applications in the electrochemical field [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Arduino microcontroller boards have expanded the functionality of electronic-controlled potentiostats [ 13 , 16 ], allowing an increment in the number of methodologies addressed with these while maintaining an affordable price. The spread and the increasing capacity of smartphones have provided a portable and affordable platform for several applications in the electrochemical field [ 16 , 17 ]. Also, the growing efficiency of smartphone applications as educational strategies [ 14 , 18 ] has allowed the use of smartphones as functional complements to potentiate the usage and portability of low-cost potentiostats [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low-cost smartphone-controlled potentiostat based on Arduino for teaching electrochemistry fundamentals and applications

Cordova-Huaman

Jauja-Ccana

Rosa-Toro

2021

Heliyon

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Accessibility to potentiostats is crucial for research development in electrochemistry, but their cost is the principal drawback for their massive use. With the aim to provide an affordable alternative for resource-constrained communities, we present a low-cost, portable electrochemical workstation that integrates an open-source potentiostat based on Arduino and a smartphone application. This graphical user interface allows easy control of electrochemical parameters and real-time visualization of the results. This potentiostat can perform the most used electrochemical techniques of cyclic and linear voltammetry and chronoamperometry, with an operating range of AE225 μA and AE1.50 V, and results that are comparable with those obtained with commercial potentiostats. Three applications reported here demonstrate the capacity and the good performance of this low-cost potentiostat as a teaching tool: identification of redox pairs, electrochemical characterization of pencil graphite electrodes, and detection of heavy metals using an electrodeposited film of bismuth on the pencil graphite electrode. Furthermore, detailed schemes of the device and its software are entirely available, expecting to provide an open-source potentiostat easy to replicate to further support education in electrochemical fundamentals and instrumentation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Low-cost smartphone-controlled potentiostat based on Arduino for teaching electrochemistry fundamentals and applications

Cordova-Huaman

Jauja-Ccana

Rosa-Toro

2021

Heliyon

View full text Add to dashboard Cite

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“…Interestingly, FDM was successfully utilized in printing of carbonaceous conductive substrates like carbon black, graphene, or carbon nanotubes mixed with thermoplastic materials [35]. Printing conductive materials paved the way for 3D printing of electronic components [36], integrated electrochemical sensors [37], and batteries [38]. FDM suffers from several drawbacks associated with low printing resolution (~5 µm), relatively high energy requirements, hazardous vapors, and adhesion problems with multi-materials printing [39].…”

Section: Fused Deposition Modeling (Fdm)mentioning

confidence: 99%

“…By way of example, incorporating a conductive electrode material into a 3D printed sensor using fused deposition modeling require using conductive carbonaceous filaments that can be printed onto conventional nonconductive filaments. Although achievable [37], this process is quite complex and require extensive optimization of the printing parameters to avoid leakage and/or structure deformity. In addition, common 3D printing techniques and materials have limited compatibility with biomolecules especially with high energy required for printing processes, like high heat in FDM and high energy laser in stereolithographic 3D printing, that prevent direct printing of these biomolecules.…”

Section: Challenges and Future Perspectivesmentioning

confidence: 99%

3D-Printed Immunosensor Arrays for Cancer Diagnostics

Sharafeldin

Kadimisetty

Bhalerao

et al. 2020

Sensors

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Detecting cancer at an early stage of disease progression promises better treatment outcomes and longer lifespans for cancer survivors. Research has been directed towards the development of accessible and highly sensitive cancer diagnostic tools, many of which rely on protein biomarkers and biomarker panels which are overexpressed in body fluids and associated with different types of cancer. Protein biomarker detection for point-of-care (POC) use requires the development of sensitive, noninvasive liquid biopsy cancer diagnostics that overcome the limitations and low sensitivities associated with current dependence upon imaging and invasive biopsies. Among many endeavors to produce user-friendly, semi-automated, and sensitive protein biomarker sensors, 3D printing is rapidly becoming an important contemporary tool for achieving these goals. Supported by the widely available selection of affordable desktop 3D printers and diverse printing options, 3D printing is becoming a standard tool for developing low-cost immunosensors that can also be used to make final commercial products. In the last few years, 3D printing platforms have been used to produce complex sensor devices with high resolution, tailored towards researchers’ and clinicians’ needs and limited only by their imagination. Unlike traditional subtractive manufacturing, 3D printing, also known as additive manufacturing, has drastically reduced the time of sensor and sensor array development while offering excellent sensitivity at a fraction of the cost of conventional technologies such as photolithography. In this review, we offer a comprehensive description of 3D printing techniques commonly used to develop immunosensors, arrays, and microfluidic arrays. In addition, recent applications utilizing 3D printing in immunosensors integrated with different signal transduction strategies are described. These applications include electrochemical, chemiluminescent (CL), and electrochemiluminescent (ECL) 3D-printed immunosensors. Finally, we discuss current challenges and limitations associated with available 3D printing technology and future directions of this field.

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Smartphone‐based Electrochemical On‐site Quantitative Detection Device for Nonenzyme Lactate Detection

Zhang

Wei

et al. 2022

Electroanalysis

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On‐site quantitative detection provides the opportunity for accurate and timely health care, clinical diagnosis, environmental monitoring, and food analysis. A variety of portable electrochemical detection instruments have been developed at present for on‐site quantitative detection use, including commercially available portable potentiostats, but the reality is that these electrochemical detection devices still have the problem of narrow output voltage range and detection current range, and their performance of output voltage resolution and detection current resolution is still unsatisfactory. The narrow voltage or current range makes it difficult for some chemical reactions with peaks outside the range to proceed, and the insufficiency of voltage resolution and detection current resolution are key parameters restricting the detection accuracy of existing devices. In this regard, it is urgent to carry out partial transformation of the existing device to increase the use range and detection accuracy of the device. In the current work, a smartphone‐based electrochemical on‐site quantitative detection device was developed. The device comprises a portable small potentiostat, a smartphone equipped with a specially designed Android electrochemical detection application, and a disposable sensor (NiONP modified screen‐printed electrode [SPE]). The potentiostat can realize electrochemical detection methods, including cyclic voltammetry, chronoamperometry, and differential pulse voltammetry. In addition, the potentiostat can output a potential range −2.047∼+2.047 V with a current detection sensitivity scale 1×10−8∼1×10−3 A, and the current detection range could reach ±10 nA∼±10 mA. Most importantly, the current detection resolution of the potentiostat can reach 0.003 % (3.125 pA on ±10 nA range). The smartphone was used for communicating with the potentiostat, setting detection parameters, and mapping voltammograms in real time. The SPE was modified with nickel oxide nanoparticles and perfluorinated resin solution, which were employed as sensors to convert and amplify the electrochemical current response during the on‐site quantitative detection. Results indicated that the device features excellent performance for the lactate detection. The device covered a linear range 0.1∼30 mM on lactate detection with the correlation coefficient (R2) reaching 0.997.

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Minipotentiostat controlled by smartphone on a micropipette: A versatile, portable, agile and accurate tool for electroanalysis

Cited by 29 publications

References 28 publications

Low-cost smartphone-controlled potentiostat based on Arduino for teaching electrochemistry fundamentals and applications

Low-cost smartphone-controlled potentiostat based on Arduino for teaching electrochemistry fundamentals and applications

3D-Printed Immunosensor Arrays for Cancer Diagnostics

Smartphone‐based Electrochemical On‐site Quantitative Detection Device for Nonenzyme Lactate Detection

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