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Ashoori E, Goderis D, Inohara A, Mason AJ. Wide Voltage Swing Potentiostat with Dynamic Analog Ground to Expand Electrochemical Potential Windows in Integrated Microsystems. SENSORS (BASEL, SWITZERLAND) 2024; 24:2902. [PMID: 38733006 PMCID: PMC11086346 DOI: 10.3390/s24092902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/21/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024]
Abstract
Electrochemical measurements are vital to a wide range of applications such as air quality monitoring, biological testing, food industry, and more. Integrated circuits have been used to implement miniaturized and low-power electrochemical potentiostats that are suitable for wearable devices. However, employing modern integrated circuit technologies with low supply voltage precludes the utilization of electrochemical reactions that require a higher potential window. In this paper, we present a novel circuit architecture that utilizes dynamic voltage at the working electrode of an electrochemical cell to effectively enhance the supported voltage range compared to traditional designs, increasing the cell voltage range by 46% and 88% for positive and negative cell voltages, respectively. In return, this facilitates a wider range of bias voltages in an electrochemical cell, and, therefore, opens integrated microsystems to a broader class of electrochemical reactions. The circuit was implemented in 180 nm technology and consumes 2.047 mW of power. It supports a bias potential range of 1.1 V to -2.12 V and cell potential range of 2.41 V to -3.11 V that is nearly double the range in conventional designs.
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Affiliation(s)
| | | | | | - Andrew J. Mason
- Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA; (E.A.); (D.G.); (A.I.)
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2
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Rossetti M, Srisomwat C, Urban M, Rosati G, Maroli G, Yaman Akbay HG, Chailapakul O, Merkoçi A. Unleashing inkjet-printed nanostructured electrodes and battery-free potentiostat for the DNA-based multiplexed detection of SARS-CoV-2 genes. Biosens Bioelectron 2024; 250:116079. [PMID: 38295580 DOI: 10.1016/j.bios.2024.116079] [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] [Received: 11/29/2023] [Revised: 01/20/2024] [Accepted: 01/25/2024] [Indexed: 02/02/2024]
Abstract
Following the global COVID-19 pandemic triggered by SARS-CoV-2, the need for rapid, specific and cost-effective point-of-care diagnostic solutions remains paramount. Even though COVID-19 is no longer a public health emergency, the disease still poses a global threat leading to deaths, and it continues to change with the risk of new variants emerging causing a new surge in cases and deaths. Here, we address the urgent need for rapid, cost-effective and point-of-care diagnostic solutions for SARS-CoV-2. We propose a multiplexed DNA-based sensing platform that utilizes inkjet-printed nanostructured gold electrodes and an inkjet-printed battery-free near-field communication (NFC) potentiostat for the simultaneous quantitative detection of two SARS-CoV-2 genes, the ORF1ab and the N gene. The detection strategy based on the formation of an RNA-DNA sandwich structure leads to a highly specific electrochemical output. The inkjet-printed nanostructured gold electrodes providing a large surface area enable efficient binding and increase the sensitivity. The inkjet-printed battery-free NFC potentiostat enables rapid measurements and real-time data analysis via a smartphone application, making the platform accessible and portable. With the advantages of speed (5 min), simplicity, sensitivity (low pM range, ∼450% signal gain) and cost-effectiveness, the proposed platform is a promising alternative for point-of-care diagnostics and high-throughput analysis that complements the COVID-19 diagnostic toolkit.
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Affiliation(s)
- Marianna Rossetti
- Catalan Institute of Nanoscience and Nanotechnology, UAB Campus, 08193, Bellaterra, Barcelona, Spain.
| | - Chawin Srisomwat
- Electrochemistry and Optical Spectroscopy Center of Excellence (EOSCE), Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Massimo Urban
- Catalan Institute of Nanoscience and Nanotechnology, UAB Campus, 08193, Bellaterra, Barcelona, Spain; Universitat Autònoma de Barcelona, Campus de la UAB, Bellaterra, Barcelona, 08193, Spain
| | - Giulio Rosati
- Catalan Institute of Nanoscience and Nanotechnology, UAB Campus, 08193, Bellaterra, Barcelona, Spain.
| | - Gabriel Maroli
- Catalan Institute of Nanoscience and Nanotechnology, UAB Campus, 08193, Bellaterra, Barcelona, Spain; Universitat Autònoma de Barcelona, Campus de la UAB, Bellaterra, Barcelona, 08193, Spain; Instituto de Investigaciones en Ingeniería Eléctrica Alfredo Desages (IIIE), Universidad Nacional del Sur, CONICET, Avenida Colón 80 Bahía Blanca, Buenos Aires, Argentina
| | - Hatice Gödze Yaman Akbay
- Catalan Institute of Nanoscience and Nanotechnology, UAB Campus, 08193, Bellaterra, Barcelona, Spain
| | - Orawon Chailapakul
- Electrochemistry and Optical Spectroscopy Center of Excellence (EOSCE), Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand
| | - Arben Merkoçi
- Catalan Institute of Nanoscience and Nanotechnology, UAB Campus, 08193, Bellaterra, Barcelona, Spain; ICREA Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys 23, 08010, Barcelona, Spain.
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Bill D, Jasper M, Weltin A, Urban GA, Rupitsch SJ, Kieninger J. Electrochemical Methods in the Cloud: FreiStat, an IoT-Enabled Embedded Potentiostat. Anal Chem 2023; 95:13003-13009. [PMID: 37582246 DOI: 10.1021/acs.analchem.3c02114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Embedded potentiostats enable electrochemical measurements in the Internet-of-Things (IoT) or other decentralized applications, such as remote environmental monitoring, electrochemical energy systems, and biomedical point-of-care applications. We report on Freiburg's Potentiostat (FreiStat) based on the AD5941 potentiostat circuit from Analog Devices, together with custom firmware, as the key to precise and advanced electrochemical methods. We demonstrated its analytical performance by various cyclic voltammetry measurements, advanced techniques such as differential pulse voltammetry, and a lactate biosensor measurement with currents in the nA range and a resolution of 54 pA. The FreiStat yielded analytical results comparable to benchtop devices and outperformed current commercial embedded potentiostats at significantly lower cost, smaller size, and lower power consumption. Decentralized corrosion analysis by a Tafel plot using the IBM Cloud showed its applicability in a typical IoT scenario. The developed open-source software framework facilitates the integration of electrochemical instrumentation into applications utilizing machine learning and other artificial intelligence. Together with the affordable and highly capable embedded potentiostat, our approach can leverage analytical chemistry toward increasingly important, more widespread and decentralized applications.
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Affiliation(s)
- David Bill
- Laboratory for Sensors, IMTEK - Department of Microsystems Engineering, University of Freiburg, 79110 Freiburg, Germany
| | - Mark Jasper
- Laboratory for Sensors, IMTEK - Department of Microsystems Engineering, University of Freiburg, 79110 Freiburg, Germany
| | - Andreas Weltin
- Laboratory for Sensors, IMTEK - Department of Microsystems Engineering, University of Freiburg, 79110 Freiburg, Germany
- BrainLinks-BrainTools Center, University of Freiburg, 79110 Freiburg, Germany
- Laboratory for Electrical Instrumentation and Embedded Systems, IMTEK - Department of Microsystems Engineering, University of Freiburg, 79110 Freiburg, Germany
| | - Gerald A Urban
- Laboratory for Sensors, IMTEK - Department of Microsystems Engineering, University of Freiburg, 79110 Freiburg, Germany
- BrainLinks-BrainTools Center, University of Freiburg, 79110 Freiburg, Germany
| | - Stefan J Rupitsch
- BrainLinks-BrainTools Center, University of Freiburg, 79110 Freiburg, Germany
- Laboratory for Electrical Instrumentation and Embedded Systems, IMTEK - Department of Microsystems Engineering, University of Freiburg, 79110 Freiburg, Germany
| | - Jochen Kieninger
- Laboratory for Sensors, IMTEK - Department of Microsystems Engineering, University of Freiburg, 79110 Freiburg, Germany
- BrainLinks-BrainTools Center, University of Freiburg, 79110 Freiburg, Germany
- Laboratory for Electrical Instrumentation and Embedded Systems, IMTEK - Department of Microsystems Engineering, University of Freiburg, 79110 Freiburg, Germany
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4
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Gil B, Lo B, Yang GZ, Anastasova S. Smart implanted access port catheter for therapy intervention with pH and lactate biosensors. Mater Today Bio 2022; 15:100298. [PMID: 35634169 PMCID: PMC9133618 DOI: 10.1016/j.mtbio.2022.100298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/22/2022] [Accepted: 05/14/2022] [Indexed: 10/29/2022] Open
Abstract
Totally implanted access ports (TIAP) are widely used with oncology patients requiring long term central venous access for the delivery of chemotherapeutic agents, infusions, transfusions, blood sample collection and parenteral nutrition. Such devices offer a significant improvement to the quality of life for patients and reduced complication rates, particularly infection, in contrast to the classical central venous catheters. Nevertheless, infections do occur, with biofilm formation bringing difficulties to the treatment of infection-related complications that can ultimately lead to the explantation of the device. A smart TIAP device that is sensor-enabled to detect infection prior to extensive biofilm formation would reduce the cases for potential device explantation, whereas biomarkers detection within body fluids such as pH or lactate would provide vital information regarding metabolic processes occurring inside the body. In this paper, we propose a novel batteryless and wireless device suitable for the interrogation of such markers in an embodiment model of an TIAP, with miniature biochemical sensing needles. Device readings can be carried out by a smartphone equipped with Near Field Communication (NFC) interface at relative short distances off-body, while providing radiofrequency energy harvesting capability to the TIAP, useful for assessing patient's health and potential port infection on demand.
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Affiliation(s)
- Bruno Gil
- The Hamlyn Centre, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Benny Lo
- The Hamlyn Centre, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Guang-Zhong Yang
- Institute of Medical Robotics, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Salzitsa Anastasova
- The Hamlyn Centre, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
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5
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Totoricaguena-Gorriño J, Dei M, Alba AF, Peřinka N, Rubio LR, Vilas-Vilela JL, del Campo FJ. Toward Next-Generation Mobile Diagnostics: Near-Field Communication-Powered Electrochemiluminescent Detection. ACS Sens 2022; 7:1544-1554. [PMID: 35559616 DOI: 10.1021/acssensors.2c00425] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Mobile phones have been used in combination with point of care (PoC) devices for over a decade now. However, their use seems restricted to the detection of sensing events using the video and camera functions. In contrast, the complementary ability to use mobile phones to power such PoC devices has been largely unexplored. This work demonstrates the proof-of-principle that a smartphone can be used to both power and analyze an electrochemiluminescence (ECL) detection system. A printed device is presented featuring an electrochemical cell connected in series to a rectenna that is able to use the Near Field Communication (NFC, 13.56 MHz) signal to provide the energy needed to generate ECL from Ru(bpy)32+/tri-n-propylamine. The emitted light, the intensity of which is directly proportional to the concentration of the ruthenium complex, can then be captured by the mobile phone camera and analyzed. This work presents the fabrication and the electrical and electrochemical characterization of the device. Effective voltages ranging from 0.90 to 4.50 V have been recorded, depending on the coupling between emitter and receiver, which translate into working electrode potentials ranging from 0.76 up to 1.79 V vs Ag. Detection and quantification limits of 0.64 and 1.52 μM, respectively, have been achieved for Ru(bpy)32+, and linear ranges up to 0.1 mM (red channel) and no less than 1.0 mM (green channel) have been found.
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Affiliation(s)
- Joseba Totoricaguena-Gorriño
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Vizcaya, Spain
| | - Michele Dei
- Department of Information Engineering, University of Pisa, 56122 - Pisa, Italy
| | - Alejandro Fidel Alba
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Vizcaya, Spain
- Grupo de Química Macromolecular, Departamento Química-Física, Universidad del País Vasco, UPV-EHU, 48940 Leioa, Vizcaya, Spain
| | - Nikola Peřinka
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Vizcaya, Spain
| | - Leire-Ruiz Rubio
- Grupo de Química Macromolecular; Departamento Química-Física, Universidad del País Vasco, UPV-EHU, 48940 Leioa, Vizcaya, Spain
| | - José Luis Vilas-Vilela
- Grupo de Química Macromolecular; Departamento Química-Física, Universidad del País Vasco, UPV-EHU, 48940 Leioa, Vizcaya, Spain
| | - Francisco Javier del Campo
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Vizcaya, Spain
- IKERBASQUE, Basque Foundation for Science, 48009, Bilbao, Spain
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6
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Abstract
Wireless chemical sensors have been developed as a result of advances in chemical sensing and wireless communication technology. Because of their mobility and widespread availability, smartphones have been extensively combined with sensors such as hand-held detectors, sensor chips, and test strips for biochemical detection. Smartphones are frequently used as controllers, analyzers, and displayers for quick, authentic, and point-of-care monitoring, which may considerably streamline the design and lower the cost of sensing systems. This study looks at the most recent wireless and smartphone-supported chemical sensors. The review is divided into four different topics that emphasize the basic types of wireless smartphone-operated chemical sensors. According to a study of 114 original research publications published during recent years, market opportunities for wireless and smartphone-supported chemical sensor systems include environmental monitoring, healthcare and medicine, food quality, sport, and fitness. The issues and illustrations for each of the primary chemical sensors relevant to many application areas are covered. In terms of performance, the advancement of technologies related to chemical sensors will result in smaller and more lightweight, cost-effective, versatile, and durable devices. Given the limitations, we suggest that wireless and smartphone-supported chemical sensor systems play a significant role in the sensor Internet of Things.
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Roniboss A, Nishanth Rao R, Chanda K, Balamurali M. Hydrazide derived colorimetric sensor for selective detection of cyanide ions. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108965] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Cheng S, Gu Z, Zhou L, Hao M, An H, Song K, Wu X, Zhang K, Zhao Z, Dong Y, Wen Y. Recent Progress in Intelligent Wearable Sensors for Health Monitoring and Wound Healing Based on Biofluids. Front Bioeng Biotechnol 2021; 9:765987. [PMID: 34790653 PMCID: PMC8591136 DOI: 10.3389/fbioe.2021.765987] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 10/12/2021] [Indexed: 01/04/2023] Open
Abstract
The intelligent wearable sensors promote the transformation of the health care from a traditional hospital-centered model to a personal portable device-centered model. There is an urgent need of real-time, multi-functional, and personalized monitoring of various biochemical target substances and signals based on the intelligent wearable sensors for health monitoring, especially wound healing. Under this background, this review article first reviews the outstanding progress in the development of intelligent, wearable sensors designed for continuous, real-time analysis, and monitoring of sweat, blood, interstitial fluid, tears, wound fluid, etc. Second, this paper reports the advanced status of intelligent wound monitoring sensors designed for wound diagnosis and treatment. The paper highlights some smart sensors to monitor target analytes in various wounds. Finally, this paper makes conservative recommendations regarding future development of intelligent wearable sensors.
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Affiliation(s)
- Siyang Cheng
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Zhen Gu
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Liping Zhou
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Mingda Hao
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Heng An
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Kaiyu Song
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Xiaochao Wu
- School of Material Science and Engineering, Zhengzhou University, Zhengzhou, China
| | - Kexin Zhang
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Zeya Zhao
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | | | - Yongqiang Wen
- Beijing Key Laboratory for Bioengineering and Sensing Technology, Daxing Research Institute, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
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9
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Thomaz DV, Contardi UA, Morikawa M, Santos PAD. Development of an affordable, portable and reliable voltametric platform for general purpose electroanalysis. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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McAlorum J, Perry M, Ward AC, Vlachakis C. ConcrEITS: An Electrical Impedance Interrogator for Concrete Damage Detection Using Self-Sensing Repairs. SENSORS 2021; 21:s21217081. [PMID: 34770388 PMCID: PMC8587345 DOI: 10.3390/s21217081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/15/2021] [Accepted: 10/21/2021] [Indexed: 11/21/2022]
Abstract
Concrete infrastructure requires continuous monitoring to ensure any new damage or repair failures are detected promptly. A cost-effective combination of monitoring and maintenance would be highly beneficial in the rehabilitation of existing infrastructure. Alkali-activated materials have been used as concrete repairs and as sensing elements for temperature, moisture, and chlorides. However, damage detection using self-sensing repairs has yet to be demonstrated, and commercial interrogation solutions are expensive. Here, we present the design of a low-cost tomographic impedance interrogator, denoted the “ConcrEITS”, capable of crack detection and location in concrete using conductive repair patches. Results show that for pure material blocks ConcrEITS is capable of measuring 4-probe impedance with a root mean square error of ±5.4% when compared to a commercially available device. For tomographic measurements, ConcrEITS is able to detect and locate cracks in patches adhered to small concrete beam samples undergoing 4-point bending. In all six samples tested, crack locations were clearly identified by the contour images gained from tomographic reconstruction. Overall, this system shows promise as a cost-effective combined solution for monitoring and maintenance of concrete infrastructure. We believe further up-scaled testing should follow this research before implementing the technology in a field trial.
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O'Callaghan S, Galvin P, O'Mahony C, Moore Z, Derwin R. 'Smart' wound dressings for advanced wound care: a review. J Wound Care 2021; 29:394-406. [PMID: 32654609 DOI: 10.12968/jowc.2020.29.7.394] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Hard-to-heal wounds are a common side-effect of diabetes, obesity, pressure ulcers and age-related vascular diseases, the incidences of which are growing worldwide. The increasing financial burden of hard-to-heal wounds on global health services has provoked technological research into improving wound diagnostics and therapeutics via 'smart' dressings, within which elements such as microelectronic sensors, microprocessors and wireless communication radios are embedded. This review highlights the progress being made by research groups worldwide in producing 'smart' wound device prototypes. Significant advances have been made, for example, flexible substrates have replaced rigid circuit boards, sensors have been printed on commercial wound dressing materials and wireless communication has been demonstrated. Challenges remain, however, in the areas of power supply, disposability, low-profile components, multiparametric sensing and seamless device integration in commercial wound dressings.
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Affiliation(s)
- Suzanne O'Callaghan
- Department of Life Sciences Interface, Tyndall National Institute, University College Cork, Ireland
| | - Paul Galvin
- Department of Life Sciences Interface, Tyndall National Institute, University College Cork, Ireland
| | - Conor O'Mahony
- Department of Life Sciences Interface, Tyndall National Institute, University College Cork, Ireland
| | - Zena Moore
- Royal College of Surgeons in Ireland, School of Nursing, 123 St. Stephen's Green, Dublin 2 Dublin, Ireland.,Monash University, Melbourne, Australia.,Ghent University, Belgium.,Lida Institute, Shanghai, China.,University of Wales, Cardiff, Wales
| | - Rosemarie Derwin
- Royal College of Surgeons in Ireland, School of Nursing, 123 St. Stephen's Green, Dublin 2 Dublin, Ireland
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12
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Smartphone-Based NFC Potentiostat for Wireless Electrochemical Sensing. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11010392] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Most electrochemical sensing requires affordable, portable and easy-to-use electrochemical devices for use in point-of-care testing and resource-limited settings. This work presents the design and evaluates the analytical performance of a near-field communication (NFC) potentiostat, a flat card-sized electrochemical device containing a microchip for electrical analysis and an NFC antenna for smartphone connection. The NFC interface is a wireless connection between the microchip and smartphone to simplify measuring units and make the potentiostat into a passive operated device, running without a battery. The proposed potentiostat can perform the common electrochemical techniques including cyclic voltammetry and chronoamperometry with a current range and voltage range of ±20 µA and ±0.8 V. The performance of the NFC potentiostat is compared to a commercial benchtop potentiostat using ferricyanide as a standard solution. The results show that the NFC potentiostat is comparable to a commercial benchtop potentiostat for both cyclic voltammetry and chronoamperometry measurements. The application of the proposed potentiostat is demonstrated by measuring ascorbic acid concentration. As described, the NFC potentiostat, which is compatible with a smartphone, is low-cost, small in size and user-friendly. Thus, the device can be developed for on-site measurement to apply in various fields.
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13
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Abstract
With the rapid development of high technology, chemical science is not as it used to be a century ago. Many chemists acquire and utilize skills that are well beyond the traditional definition of chemistry. The digital age has transformed chemistry laboratories. One aspect of this transformation is the progressing implementation of electronics and computer science in chemistry research. In the past decade, numerous chemistry-oriented studies have benefited from the implementation of electronic modules, including microcontroller boards (MCBs), single-board computers (SBCs), professional grade control and data acquisition systems, as well as field-programmable gate arrays (FPGAs). In particular, MCBs and SBCs provide good value for money. The application areas for electronic modules in chemistry research include construction of simple detection systems based on spectrophotometry and spectrofluorometry principles, customizing laboratory devices for automation of common laboratory practices, control of reaction systems (batch- and flow-based), extraction systems, chromatographic and electrophoretic systems, microfluidic systems (classical and nonclassical), custom-built polymerase chain reaction devices, gas-phase analyte detection systems, chemical robots and drones, construction of FPGA-based imaging systems, and the Internet-of-Chemical-Things. The technology is easy to handle, and many chemists have managed to train themselves in its implementation. The only major obstacle in its implementation is probably one's imagination.
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Affiliation(s)
- Gurpur Rakesh D Prabhu
- Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan.,Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, Hsinchu, 300, Taiwan
| | - Pawel L Urban
- Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan.,Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan
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14
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Abdullah S, Serpelloni M, Sardini E. Design of multichannel potentiostat for remote and longtime monitoring of glucose concentration during yeast fermentation. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:054104. [PMID: 32486726 DOI: 10.1063/1.5137789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
This paper presents the design of a wireless portable and multichannel potentiostat for remote monitoring in enclosed environments for long-time applications. In this paper, the proposed potentiostat is tested for monitoring the glucose concentration during the fermentation of yeast in real time for more than 24 h. The potentiostat is powered by a USB-connected battery and operated through a Bluetooth using a LabVIEW designed data monitoring and control panel. The potentiostat is capable of performing cyclic voltammetry or chronoamperometry on six biosensors simultaneously and gives the real-time response using Bluetooth connection. The potentiostat has a common counter electrode and reference electrode connection to all biosensors and independent working electrodes for all biosensors. The potentiostat was tested and validated by comparing the results obtained by a commercial potentiostat. The tests performed for monitoring the glucose concentration during the fermentation process showed a current detection limit of 180 nA and reported a standard deviation of ±2% for anodic and cathodic current peaks for cyclic voltammetry measurements when compared with the commercially available device. This study enables the novel method of monitoring the fermentation process wirelessly for days.
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Affiliation(s)
- Saad Abdullah
- Department of Information Engineering, University of Brescia, Piazza del Mercato, 15-25121 Brescia, Italy
| | - Mauro Serpelloni
- Department of Information Engineering, University of Brescia, Piazza del Mercato, 15-25121 Brescia, Italy
| | - Emilio Sardini
- Department of Information Engineering, University of Brescia, Piazza del Mercato, 15-25121 Brescia, Italy
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15
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KickStat: A Coin-Sized Potentiostat for High-Resolution Electrochemical Analysis. SENSORS 2020; 20:s20082407. [PMID: 32340294 PMCID: PMC7219484 DOI: 10.3390/s20082407] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 04/18/2020] [Accepted: 04/21/2020] [Indexed: 12/18/2022]
Abstract
The demand for wearable and point-of-care devices has led to an increase in electrochemical sensor development to measure an ever-increasing array of biological molecules. In order to move from the benchtop to truly portable devices, the development of new biosensors requires miniaturized instrumentation capable of making highly sensitive amperometric measurements. To meet this demand, we have developed KickStat, a miniaturized potentiostat that combines the small size of the integrated Texas Instruments LMP91000 potentiostat chip (Texas Instruments, Dallas, TX, USA) with the processing power of the ARM Cortex-M0+ SAMD21 microcontroller (Microchip Technology, Chandler, AZ, USA) on a custom-designed 21.6 mm by 20.3 mm circuit board. By incorporating onboard signal processing via the SAMD21, we achieve 1 mV voltage increment resolution and an instrumental limit of detection of 4.5 nA in a coin-sized form factor. This elegant engineering solution allows for high-resolution electrochemical analysis without requiring extensive circuitry. We measured the faradaic current of an anti-cocaine aptamer using cyclic voltammetry and square wave voltammetry and demonstrated that KickStat’s response was within 0.6% of a high-end benchtop potentiostat. To further support others in electrochemical biosensors development, we have made KickStat’s design and firmware available in an online GitHub repository.
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16
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Bianchi V, Mattarozzi M, Giannetto M, Boni A, De Munari I, Careri M. A Self-Calibrating IoT Portable Electrochemical Immunosensor for Serum Human Epididymis Protein 4 as a Tumor Biomarker for Ovarian Cancer. SENSORS 2020; 20:s20072016. [PMID: 32260240 PMCID: PMC7180438 DOI: 10.3390/s20072016] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 03/30/2020] [Accepted: 03/31/2020] [Indexed: 11/16/2022]
Abstract
Nowadays, analytical techniques are moving towards the development of smart biosensing strategies for the point-of-care accurate screening of disease biomarkers, such as human epididymis protein 4 (HE4), a recently discovered serum marker for early ovarian cancer diagnosis. In this context, the present work represents the first implementation of a competitive enzyme-labelled magneto-immunoassay exploiting a homemade IoT Wi-Fi cloud-based portable potentiostat for differential pulse voltammetry readout. The electrochemical device was specifically designed to be capable of autonomous calibration and data processing, switching between calibration, and measurement modes: in particular, firstly, a baseline estimation algorithm is applied for correct peak computation, then calibration function is built by interpolating data with a four-parameter logistic function. The calibration function parameters are stored on the cloud for inverse prediction to determine the concentration of unknown samples. Interpolation function calibration and concentration evaluation are performed directly on-board, thus reducing the power consumption. The analytical device was validated in human serum, demonstrating good sensing performance for analysis of HE4 with detection and quantitation limits in human serum of 3.5 and 29.2 pM, respectively, reaching the sensitivity that is required for diagnostic purposes, with high potential for applications as portable and smart diagnostic tool for point-of-care testing.
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Affiliation(s)
- Valentina Bianchi
- Department of Engineering and Architecture, University of Parma, 43124 Parma, Italy; (V.B.); (A.B.); (I.D.M.)
| | - Monica Mattarozzi
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy;
- Correspondence: (M.M.); (M.G.)
| | - Marco Giannetto
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy;
- Correspondence: (M.M.); (M.G.)
| | - Andrea Boni
- Department of Engineering and Architecture, University of Parma, 43124 Parma, Italy; (V.B.); (A.B.); (I.D.M.)
| | - Ilaria De Munari
- Department of Engineering and Architecture, University of Parma, 43124 Parma, Italy; (V.B.); (A.B.); (I.D.M.)
| | - Maria Careri
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy;
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17
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Yokus MA, Songkakul T, Pozdin VA, Bozkurt A, Daniele MA. Wearable multiplexed biosensor system toward continuous monitoring of metabolites. Biosens Bioelectron 2020; 153:112038. [DOI: 10.1016/j.bios.2020.112038] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 01/15/2020] [Accepted: 01/17/2020] [Indexed: 01/13/2023]
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18
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Competitive USB-Powered Hand-Held Potentiostat for POC Applications: An HRP Detection Case. SENSORS 2019; 19:s19245388. [PMID: 31817657 PMCID: PMC6960634 DOI: 10.3390/s19245388] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 11/27/2019] [Accepted: 12/03/2019] [Indexed: 01/04/2023]
Abstract
Considerable efforts are made to develop Point-of-Care (POC) diagnostic tests. POC devices have the potential to match or surpass conventional systems regarding time, accuracy, and cost, and they are significantly easier to operate by or close to the patient. This strongly depends on the availability of miniaturized measurement equipment able to provide a fast and sensitive response. This paper presents a low-cost, portable, miniaturized USB-powered potentiostat for electrochemical analysis, which has been designed, fabricated, characterized, and tested against three forms of high-cost commercial equipment. The portable platform has a final size of 10.5 × 5.8 × 2.5 cm, a weight of 41 g, and an approximate manufacturing cost of $85 USD. It includes three main components: the power module which generates a stable voltage and a negative supply, the front-end module that comprises a dual-supply potentiostat, and the back-end module, composed of a microcontroller unit and a LabVIEW-based graphic user interface, granting plug-and-play and easy-to-use operation on any computer. The performance of this prototype was evaluated by detecting chronoamperometrically horseradish peroxidase (HRP), the enzymatic label most widely used in electrochemical biosensors. As will be shown, the miniaturized platform detected HRP at concentrations ranging from 0.01 ng·mL−1 to 1 µg·mL−1, with results comparable to those obtained with the three commercial electrochemical systems.
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19
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Park SJ, Jeon DY, Moon YS, Park IH, Kim GT. Web-drive based source measure unit for automated evaluations of ionic liquid-gated MoS 2 transistors. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:124708. [PMID: 31893837 DOI: 10.1063/1.5111724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 12/02/2019] [Indexed: 06/10/2023]
Abstract
For reliable characterization of two-dimensional semiconducting devices and continuous monitoring in toxic environments, construction of an electrical characterization-based massive database using a portable source measure unit (SMU) with a WiFi connection is desirable. The web-drive based SMU using a microcontroller developed here exhibits superior voltage source performance (∼1 mV) and voltage/current measurement (∼0.15 mV/∼1 nA) capabilities, with automatic construction of a measurement database for online storage using web-drive based software, which can be applied for reliable electrical characterization. Electrical characterization of ionic liquid-gated MoS2 transistors was achieved with the designed SMU and showed results comparable with those obtained using a commercial semiconductor characterization system. Ionic liquid-gated transistors only require a small gate bias (∼1.5 V) for on-state operation because of the high gate capacitance originating from the thin dielectric layer constructed of an electrical double layer, which makes the device a promising candidate for low power consumption applications. Finally, several electrical parameters of the ionic liquid-gated transistor were extracted from the datasets and uploaded to the web-drive.
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Affiliation(s)
- So Jeong Park
- School of Electrical Engineering, Korea University, Seoul 02841, South Korea
| | - Dae-Young Jeon
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology, Joellabuk-do 55324, South Korea
| | - Young-Sun Moon
- School of Electrical Engineering, Korea University, Seoul 02841, South Korea
| | - Il-Hoo Park
- School of Electrical Engineering, Korea University, Seoul 02841, South Korea
| | - Gyu-Tae Kim
- School of Electrical Engineering, Korea University, Seoul 02841, South Korea
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20
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Escobedo P, Erenas MM, Martínez-Olmos A, Carvajal MA, Gonzalez-Chocano S, Capitán-Vallvey LF, Palma AJ. General-purpose passive wireless point–of–care platform based on smartphone. Biosens Bioelectron 2019; 141:111360. [DOI: 10.1016/j.bios.2019.111360] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 05/16/2019] [Accepted: 05/27/2019] [Indexed: 10/26/2022]
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21
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Ruzgas T, Larpant N, Shafaat A, Sotres J. Wireless, Battery‐Less Biosensors Based on Direct Electron Transfer Reactions. ChemElectroChem 2019. [DOI: 10.1002/celc.201901015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Tautgirdas Ruzgas
- Department of Biomedical Science Faculty of Health and SocietyMalmö University 205 06 Malmö Sweden
- Biofilms – Research Center for BiointerfacesMalmö University 205 06 Malmö Sweden
| | - Nutcha Larpant
- Graduate Program in Clinical Biochemistry and Molecular Medicine Faculty of Allied Health SciencesChulalongkorn University Patumwan Bangkok 10330 Thailand
| | - Atefeh Shafaat
- Department of Biomedical Science Faculty of Health and SocietyMalmö University 205 06 Malmö Sweden
- Biofilms – Research Center for BiointerfacesMalmö University 205 06 Malmö Sweden
| | - Javier Sotres
- Department of Biomedical Science Faculty of Health and SocietyMalmö University 205 06 Malmö Sweden
- Biofilms – Research Center for BiointerfacesMalmö University 205 06 Malmö Sweden
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22
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Mercer C, Bennett R, Conghaile PÓ, Rusling JF, Leech D. Glucose biosensor based on open-source wireless microfluidic potentiostat. SENSORS AND ACTUATORS. B, CHEMICAL 2019; 290:616-624. [PMID: 32395016 PMCID: PMC7213535 DOI: 10.1016/j.snb.2019.02.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Wireless potentiostats capable of cyclic voltammetry and amperometry that connect to the Internet are emerging as key attributes of future point-of-care devices. This work presents an "integrated microfluidic electrochemical detector" (iMED) three-electrode multi-potentiostat designed around operational amplifiers connected to a powerful WiFi-based microcontroller as a promising alternative to more expensive and complex strategies reported in the literature. The iMED is integrated with a microfluidic system developed to be controlled by the same microcontroller. The iMED is programmed wirelessly over a standard WiFi network and all electrochemical data is uploaded to an open-source cloud-based server. A wired desktop computer is not necessary for operation or program uploading. This method of integrated microfluidic automation is simple, uses common and inexpensive materials, and is compatible with commercial sample injectors. An integrated biosensor platform contains four screen-printed carbon arrays inside 4 separate microfluidic detection chambers with Pt counter and pseudo Ag/AgCl reference electrodes in situ. The iMED is benchmarked with K3[Fe(CN)6] against a commercial potentiostat and then as a glucose biosensor using glucose-oxidising films of [Os(2,2'-bipyridine)2(polyvinylimidazole)10Cl] prepared on screen-printed electrodes with multi walled carbon nanotubes, poly(ethylene glycol) diglycidyl ether and flavin adenine dinucleotide-dependent glucose dehydrogenase. Potential application of this cost-effective wireless potentiostat approach to modern bioelectronics and point-of-care diagnosis is demonstrated by production of glucose oxidation currents, under pseudo-physiological conditions, using mediating films with lower redox potentials.
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Affiliation(s)
- Conan Mercer
- School of Chemistry and Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
| | - Richard Bennett
- School of Chemistry and Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
| | - Peter Ó. Conghaile
- National Centre for Sensor Research, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - James F. Rusling
- School of Chemistry and Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
- Department of Chemistry, University of Connecticut, Storrs, CT 06269-3060, United States
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269-3136, United States
- Department of Surgery and Neag Cancer Centre, UConn Health, Farmington, CT 06030, United States
| | - Dónal Leech
- School of Chemistry and Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
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23
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CMOS Interfaces for Internet-of-Wearables Electrochemical Sensors: Trends and Challenges. ELECTRONICS 2019. [DOI: 10.3390/electronics8020150] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Smart wearables, among immediate future IoT devices, are creating a huge and fast growing market that will encompass all of the next decade by merging the user with the Cloud in a easy and natural way. Biological fluids, such as sweat, tears, saliva and urine offer the possibility to access molecular-level dynamics of the body in a non-invasive way and in real time, disclosing a wide range of applications: from sports tracking to military enhancement, from healthcare to safety at work, from body hacking to augmented social interactions. The term Internet of Wearables (IoW) is coined here to describe IoT devices composed by flexible smart transducers conformed around the human body and able to communicate wirelessly. In addition the biochemical transducer, an IoW-ready sensor must include a paired electronic interface, which should implement specific stimulation/acquisition cycles while being extremely compact and drain power in the microwatts range. Development of an effective readout interface is a key element for the success of an IoW device and application. This review focuses on the latest efforts in the field of Complementary Metal–Oxide–Semiconductor (CMOS) interfaces for electrochemical sensors, and analyses them under the light of the challenges of the IoW: cost, portability, integrability and connectivity.
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24
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Ainla A, Mousavi MPS, Tsaloglou MN, Redston J, Bell JG, Fernández-Abedul MT, Whitesides GM. Open-Source Potentiostat for Wireless Electrochemical Detection with Smartphones. Anal Chem 2018; 90:6240-6246. [PMID: 29658268 PMCID: PMC5997382 DOI: 10.1021/acs.analchem.8b00850] [Citation(s) in RCA: 148] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 04/16/2018] [Indexed: 12/15/2022]
Abstract
This paper describes the design and characterization of an open-source "universal wireless electrochemical detector" (UWED). This detector interfaces with a smartphone (or a tablet) using "Bluetooth Low Energy" protocol; the smartphone provides (i) a user interface for receiving the experimental parameters from the user and visualizing the result in real time, and (ii) a proxy for storing, processing, and transmitting the data and experimental protocols. This approach simplifies the design, and decreases both the size and the cost of the hardware; it also makes the UWED adaptable to different types of analyses by simple modification of the software. The UWED can perform the most common electroanalytical techniques of potentiometry, chronoamperometry, cyclic voltammetry, and square wave voltammetry, with results closely comparable to benchtop commercial potentiostats. Although the operating ranges of electrical current and voltage of the UWED (±1.5 V, ±180 μA) are more limited than most benchtop commercial potentiostats, its functional range is sufficient for most electrochemical analyses in aqueous solutions. Because the UWED is simple, small in size, assembled from inexpensive components, and completely wireless, it offers new opportunities for the development of affordable diagnostics, sensors, and wearable devices.
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Affiliation(s)
- Alar Ainla
- Department
of Chemistry and Chemical Biology, Wyss Institute for Biologically Inspired
Engineering, and Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, Massachusetts 02138, United States
- International
Iberian Nanotechnology Laboratory (INL), Braga 4715-330, Portugal
| | - Maral P. S. Mousavi
- Department
of Chemistry and Chemical Biology, Wyss Institute for Biologically Inspired
Engineering, and Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Maria-Nefeli Tsaloglou
- Department
of Chemistry and Chemical Biology, Wyss Institute for Biologically Inspired
Engineering, and Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, Massachusetts 02138, United States
- Diagnostics
for
All, Inc. (DFA), Salem, Massachusetts 01970, United States
| | - Julia Redston
- Department
of Chemistry and Chemical Biology, Wyss Institute for Biologically Inspired
Engineering, and Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Jeffrey G. Bell
- Department
of Chemistry and Chemical Biology, Wyss Institute for Biologically Inspired
Engineering, and Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, Massachusetts 02138, United States
| | | | - George M. Whitesides
- Department
of Chemistry and Chemical Biology, Wyss Institute for Biologically Inspired
Engineering, and Kavli Institute for Bionano Science and Technology, Harvard University, Cambridge, Massachusetts 02138, United States
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25
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Cui Y. Wireless Biological Electronic Sensors. SENSORS (BASEL, SWITZERLAND) 2017; 17:E2289. [PMID: 28991220 PMCID: PMC5677187 DOI: 10.3390/s17102289] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 09/26/2017] [Accepted: 09/28/2017] [Indexed: 11/17/2022]
Abstract
The development of wireless biological electronic sensors could open up significant advances for both fundamental studies and practical applications in a variety of areas, including medical diagnosis, environmental monitoring, and defense applications. One of the major challenges in the development of wireless bioelectronic sensors is the successful integration of biosensing units and wireless signal transducers. In recent years, there are a few types of wireless communication systems that have been integrated with biosensing systems to construct wireless bioelectronic sensors. To successfully construct wireless biological electronic sensors, there are several interesting questions: What types of biosensing transducers can be used in wireless bioelectronic sensors? What types of wireless systems can be integrated with biosensing transducers to construct wireless bioelectronic sensors? How are the electrical sensing signals generated and transmitted? This review will highlight the early attempts to address these questions in the development of wireless biological electronic sensors.
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Affiliation(s)
- Yue Cui
- College of Engineering, Peking University, Beijing 100871, China.
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26
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Witkowska Nery E, Kundys M, Jeleń PS, Jönsson-Niedziółka M. Electrochemical Glucose Sensing: Is There Still Room for Improvement? Anal Chem 2016; 88:11271-11282. [DOI: 10.1021/acs.analchem.6b03151] [Citation(s) in RCA: 160] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Emilia Witkowska Nery
- Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Magdalena Kundys
- Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Paulina S. Jeleń
- Institute
of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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27
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Giordano GF, Vicentini MB, Murer RC, Augusto F, Ferrão MF, Helfer GA, da Costa AB, Gobbi AL, Hantao LW, Lima RS. Point-of-use electroanalytical platform based on homemade potentiostat and smartphone for multivariate data processing. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.09.157] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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28
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Sun A, Venkatesh AG, Hall DA. A Multi-Technique Reconfigurable Electrochemical Biosensor: Enabling Personal Health Monitoring in Mobile Devices. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2016; 10:945-954. [PMID: 28113176 DOI: 10.1109/tbcas.2016.2586504] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This paper describes the design and characterization of a reconfigurable, multi-technique electrochemical biosensor designed for direct integration into smartphone and wearable technologies to enable remote and accurate personal health monitoring. By repurposing components from one mode to the next, the biosensor's potentiostat is able reconfigure itself into three different measurements modes to perform amperometric, potentiometric, and impedance spectroscopic tests all with minimal redundant devices. A [Formula: see text] PCB prototype of the module was developed with discrete components and tested using Google's Project Ara modular smartphone. The amperometric mode has a ±1 nA to [Formula: see text] measurement range. When used to detect pH, the potentiometric mode achieves a resolution of < 0.08 pH units. In impedance measurement mode, the device can measure 50 Ω-10 [Formula: see text] and has been shown to have of phase error. This prototype was used to perform several point-of-care health tracking assays suitable for use with mobile devices: 1) Blood glucose tests were conducted and shown to cover the diagnostic range for Diabetic patients ( ∼ 200 mg/dL). 2) Lactoferrin, a biomarker for urinary tract infections, was detected with a limit of detection of approximately 1 ng/mL. 3) pH tests of sweat were conducted to track dehydration during exercise. 4) EIS was used to determine the concentration of NeutrAvidin via a label-free assay.
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29
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30
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Rotariu L, Lagarde F, Jaffrezic-Renault N, Bala C. Electrochemical biosensors for fast detection of food contaminants – trends and perspective. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.12.017] [Citation(s) in RCA: 189] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Steinberg MD, Kassal P, Steinberg IM. System Architectures in Wearable Electrochemical Sensors. ELECTROANAL 2016. [DOI: 10.1002/elan.201600094] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Koutilellis GD, Economou A, Efstathiou CE. A potentiostat featuring an integrator transimpedance amplifier for the measurement of very low currents--Proof-of-principle application in microfluidic separations and voltammetry. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:034101. [PMID: 27036788 DOI: 10.1063/1.4942915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This work reports the design and construction of a novel potentiostat which features an integrator transimpedance amplifier as a current-monitoring unit. The integration approach addresses the limitations of the feedback resistor approach used for current monitoring in conventional potentiostat designs. In the present design, measurement of the current is performed by a precision switched integrator transimpedance amplifier operated in the dual sampling mode which enables sub-pA resolution. The potentiostat is suitable for measuring very low currents (typical dynamic range: 5 pA-4.7 μA) with a 16 bit resolution, and it can support 2-, 3- and 4-electrode cell configurations. Its operation was assessed by using it as a detection module in a home-made capillary electrophoresis system for the separation and amperometric detection of paracetamol and p-aminophenol at a 3-electrode microfluidic chip. The potential and limitations of the proposed potentiostat to implement fast potential-scan voltammetric techniques were demonstrated for the case of cyclic voltammetry.
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Affiliation(s)
- G D Koutilellis
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis, Athens 157 71, Greece
| | - A Economou
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis, Athens 157 71, Greece
| | - C E Efstathiou
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Athens, Panepistimiopolis, Athens 157 71, Greece
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33
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Pasluosta CF, Gassner H, Winkler J, Klucken J, Eskofier BM. An Emerging Era in the Management of Parkinson's Disease: Wearable Technologies and the Internet of Things. IEEE J Biomed Health Inform 2015; 19:1873-81. [PMID: 26241979 DOI: 10.1109/jbhi.2015.2461555] [Citation(s) in RCA: 198] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Current challenges demand a profound restructuration of the global healthcare system. A more efficient system is required to cope with the growing world population and increased life expectancy, which is associated with a marked prevalence of chronic neurological disorders such as Parkinson's disease (PD). One possible approach to meet this demand is a laterally distributed platform such as the Internet of Things (IoT). Real-time motion metrics in PD could be obtained virtually in any scenario by placing lightweight wearable sensors in the patient's clothes and connecting them to a medical database through mobile devices such as cell phones or tablets. Technologies exist to collect huge amounts of patient data not only during regular medical visits but also at home during activities of daily life. These data could be fed into intelligent algorithms to first discriminate relevant threatening conditions, adjust medications based on online obtained physical deficits, and facilitate strategies to modify disease progression. A major impact of this approach lies in its efficiency, by maximizing resources and drastically improving the patient experience. The patient participates actively in disease management via combined objective device- and self-assessment and by sharing information within both medical and peer groups. Here, we review and discuss the existing wearable technologies and the Internet-of-Things concept applied to PD, with an emphasis on how this technological platform may lead to a shift in paradigm in terms of diagnostics and treatment.
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34
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Smart bandage with wireless connectivity for uric acid biosensing as an indicator of wound status. Electrochem commun 2015. [DOI: 10.1016/j.elecom.2015.03.018] [Citation(s) in RCA: 186] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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