1
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Tsai PC, Chen RLC, Hsieh BC, Cheng TJ. Nitrocellulose/acrylic resin coated screen-printed carbon electrode to construct a capacitive immunosensor for anti-BSA. Biosens Bioelectron 2024; 258:116376. [PMID: 38739999 DOI: 10.1016/j.bios.2024.116376] [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: 02/21/2024] [Revised: 05/01/2024] [Accepted: 05/08/2024] [Indexed: 05/16/2024]
Abstract
The capacitive immunosensor, known for its label-free simplicity, has great potential for point-of-care diagnostics. However, the interaction between insulation and recognition layers on the sensing electrode greatly affects its performance. This study introduces a pioneering dual-layer strategy, implementing a novel combination of acrylic resin (AR) and nitrocellulose (NC) coatings on screen-printed carbon electrodes (SPCEs). This innovative approach not only enhances the dielectric properties of the capacitive sensor but also streamlines the immobilization of recognizing elements. Particularly noteworthy is the superior reliability and insulation offered by the AR coating, surpassing the limitations of traditional self-assembled monolayer (SAM) modifications. This dual-layer methodology establishes a robust foundation for constructing capacitive sensors optimized specifically for liquid medium-based biosensing applications. The NC coating in this study represents a breakthrough in effectively immobilizing BSA, unraveling the capacitive response intricately linked to the quantity of adsorbed recognizing elements. The results underscore the prowess of the proposed immunosensor, showcasing a meticulously defined linear calibration curve for anti-BSA (ranging from 0 to 25 μg/ml). Additionally, specific interactions with anti-HAS and anti-TNF-α further validate the versatility and efficacy of the developed immunosensor. This work presents a streamlined and highly efficient protocol for developing label-free immunosensors for antibody determination and introduces a paradigm shift by utilizing readily available electrodes and sensing systems. The findings are poised to catalyze a significant acceleration in the advancement of biosensor technology, opening new avenues for innovative applications in point-of-care diagnostics.
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Affiliation(s)
- Pei-Chia Tsai
- Department of Biomechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Richie L C Chen
- Department of Biomechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Bo-Chuan Hsieh
- Department of Biomechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Tzong-Jih Cheng
- Department of Biomechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan.
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2
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Osouli Tabrizi H, Forouhi S, Azadmousavi T, Ghafar-Zadeh E. A Multidisciplinary Approach toward CMOS Capacitive Sensor Array for Droplet Analysis. MICROMACHINES 2024; 15:232. [PMID: 38398961 PMCID: PMC10892496 DOI: 10.3390/mi15020232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 01/27/2024] [Accepted: 01/30/2024] [Indexed: 02/25/2024]
Abstract
This paper introduces an innovative method for the analysis of alcohol-water droplets on a CMOS capacitive sensor, leveraging the controlled thermal behavior of the droplets. Using this sensing method, the capacitive sensor measures the total time of evaporation (ToE), which can be influenced by the droplet volume, temperature, and chemical composition. We explored this sensing method by introducing binary mixtures of water and ethanol or methanol across a range of concentrations (0-100%, with 10% increments). The experimental results indicate that while the capacitive sensor is effective in measuring both the total ToE and dielectric properties, a higher dynamic range and resolution are observed in the former. Additionally, an array of sensing electrodes successfully monitors the droplet-sensor surface interaction. However practical considerations such as the creation of parasitic capacitance due to mismatch, arise from the large sensing area in the proposed capacitive sensors and other similar devices. In this paper, we discuss this non-ideality and propose a solution. Also, this paper showcases the benefits of utilizing a CMOS capacitive sensing method for accurately measuring ToE.
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Affiliation(s)
- Hamed Osouli Tabrizi
- Biologically Inspired Sensors and Actuators, Department of Electrical Engineering and Computer Science, Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, Canada; (H.O.T.); (S.F.)
| | - Saghi Forouhi
- Biologically Inspired Sensors and Actuators, Department of Electrical Engineering and Computer Science, Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, Canada; (H.O.T.); (S.F.)
| | - Tayebeh Azadmousavi
- Department of Electrical Engineering, University of Bonab, Bonab 5551395133, Iran;
| | - Ebrahim Ghafar-Zadeh
- Biologically Inspired Sensors and Actuators, Department of Electrical Engineering and Computer Science, Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, Canada; (H.O.T.); (S.F.)
- Department of Biology, Faculty of Science, York University, Toronto, ON M3J 1P3, Canada
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3
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Huang L, Zhang C, Ye R, Yan B, Zhou X, Xu W, Guo J. Capacitive biosensors for label-free and ultrasensitive detection of biomarkers. Talanta 2024; 266:124951. [PMID: 37487266 DOI: 10.1016/j.talanta.2023.124951] [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: 05/04/2023] [Revised: 07/10/2023] [Accepted: 07/14/2023] [Indexed: 07/26/2023]
Abstract
Capacitive biosensors are label-free capacitors that can detect biomarkers with the outstanding advantages of simplicity, low cost, and ultrahigh sensitivity. A typical capacitive biosensor consists of a bioreceptor and a transducer, where the bioreceptor captures the biomarker to form a bioreceptor/biomarker conjugate and the transducer generates a detectable signal. In general, antibodies, aptamers, or proteins are exploited as the bioreceptor, while various electrodes including carbon electrodes (CEs), gold electrodes (AuEs), or interdigitated electrodes (IDEs) may serve as the transducer. Because the formation of bioreceptor/biomarker conjugates often leads to a change in capacitance, the capacitive signal is then employed for biomarker detection. This review summarizes recent advances in capacitive biosensors for the detection of biomarkers over the last five years. With a focus on the three common types of bioreceptors, i.e., antibodies, aptamers, and proteins, capacitive biosensors using CEs, AuEs, and IDEs as the transducers are discussed in detail. The immobilization of bioreceptors and signal amplification strategies are described to provide a robust overview of capacitive biosensors for biomarker detection. In addition, analytical methods and future prospects are given to support the application of capacitive biosensors.
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Affiliation(s)
- Lei Huang
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, China; School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu, China
| | - Cheng Zhang
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, China
| | - Run Ye
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, China
| | - Bin Yan
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, China.
| | - Xiaojia Zhou
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, China.
| | - Wenbo Xu
- School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu, China
| | - Jinhong Guo
- School of Sensing Science and Engineering, Shanghai Jiao Tong University, Shanghai, China.
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4
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Aptamer-functionalized capacitive biosensors. Biosens Bioelectron 2023; 224:115014. [PMID: 36628826 DOI: 10.1016/j.bios.2022.115014] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/17/2022] [Accepted: 12/13/2022] [Indexed: 12/25/2022]
Abstract
The growing use of aptamers as target recognition elements in label-free biosensing necessitates corresponding transducers that can be used in relevant environments. While popular in many fields, capacitive sensors have seen relatively little, but growing use in conjunction with aptamers for sensing diverse targets. Few reports have shown physiologically relevant sensitivity in laboratory conditions and a cohesive picture on how target capture modifies the measured capacitance has been lacking. In this review, we assess the current state of the field in three areas: small molecule, protein, and cell sensing. We critically analyze the proposed hypotheses on how aptamer-target capture modifies the capacitance, as many mechanistic postulations appear to conflict between published works. As the field matures, we encourage future works to investigate individual aptamer-target interactions and to interrogate the physical mechanisms leading to measured changes in capacitance. To this point, we provide recommendations on best practices for developing aptasensors with a particular focus on considerations for biosensing in clinical settings.
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Rodrigues Oliveira SM, Rebocho A, Ahmadpour E, Nissapatorn V, de Lourdes Pereira M. Type 1 Diabetes Mellitus: A Review on Advances and Challenges in Creating Insulin Producing Devices. MICROMACHINES 2023; 14:151. [PMID: 36677212 PMCID: PMC9867263 DOI: 10.3390/mi14010151] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 12/25/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
Type 1 diabetes mellitus (T1DM) is the most common autoimmune chronic disease in young patients. It is caused by the destruction of pancreatic endocrine β-cells that produce insulin in specific areas of the pancreas, known as islets of Langerhans. As a result, the body becomes insulin deficient and hyperglycemic. Complications associated with diabetes are life-threatening and the current standard of care for T1DM consists still of insulin injections. Lifesaving, exogenous insulin replacement is a chronic and costly burden of care for diabetic patients. Alternative therapeutic options have been the focus in these fields. Advances in molecular biology technologies and in microfabrication have enabled promising new therapeutic options. For example, islet transplantation has emerged as an effective treatment to restore the normal regulation of blood glucose in patients with T1DM. However, this technique has been hampered by obstacles, such as limited islet availability, extensive islet apoptosis, and poor islet vascular engraftment. Many of these unsolved issues need to be addressed before a potential cure for T1DM can be a possibility. New technologies like organ-on-a-chip platforms (OoC), multiplexed assessment tools and emergent stem cell approaches promise to enhance therapeutic outcomes. This review will introduce the disorder of type 1 diabetes mellitus, an overview of advances and challenges in the areas of microfluidic devices, monitoring tools, and prominent use of stem cells, and how they can be linked together to create a viable model for the T1DM treatment. Microfluidic devices like OoC platforms can establish a crucial platform for pathophysiological and pharmacological studies as they recreate the pancreatic environment. Stem cell use opens the possibility to hypothetically generate a limitless number of functional pancreatic cells. Additionally, the integration of stem cells into OoC models may allow personalized or patient-specific therapies.
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Affiliation(s)
- Sonia M. Rodrigues Oliveira
- HMRI-Hunter Medical Research Institute, New Lambton, NSW 2305, Australia
- CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - António Rebocho
- Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Ehsan Ahmadpour
- Drug Applied Research Center, Department of Parasitology and Mycology, Tabriz University of Medical Sciences, Tabriz 5166/15731, Iran
- Department of Parasitology and Mycology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz 5166/15731, Iran
| | - Veeranoot Nissapatorn
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80160, Thailand
- School of Allied Health Sciences, Southeast Asia Water Team (SEAWater Team), World Union for Herbal Drug Discovery (WUHeDD), Research Excellence Center for Innovation and Health Products, Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Maria de Lourdes Pereira
- CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
- Department of Medical Sciences, University of Aveiro, 3810-193 Aveiro, Portugal
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6
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Robin P, Gerber-Lemaire S. Design and Preparation of Sensing Surfaces for Capacitive Biodetection. BIOSENSORS 2022; 13:17. [PMID: 36671852 PMCID: PMC9856139 DOI: 10.3390/bios13010017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/15/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Despite their high sensitivity and their suitability for miniaturization, biosensors are still limited for clinical applications due to the lack of reproducibility and specificity of their detection performance. The design and preparation of sensing surfaces are suspected to be a cause of these limitations. Here, we first present an updated overview of the current state of use of capacitive biosensors in a medical context. Then, we summarize the encountered strategies for the fabrication of capacitive biosensing surfaces. Finally, we describe the characteristics which govern the performance of the sensing surfaces, along with recent developments that were suggested to overcome their main current limitations.
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Tabrizi HO, Forouhi S, Ghafar-Zadeh E. A High Dynamic Range Dual 8×16 Capacitive Sensor Array for Life Science Applications. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2022; PP:1191-1203. [PMID: 37015455 DOI: 10.1109/tbcas.2022.3230668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
This paper presents a fully integrated complementary metal-oxide-semiconductor (CMOS) capacitive sensor array for life science applications. This sensing device consists of an array of 16 × 16 interdigitated electrodes (IDEs) integrated with a charge-based readout and multiplexing circuitries on the same chip. This chip was implemented in 0.35 µm AMS CMOS process. This sensing device has a wide input capacitance range (ICR) of about 100 fF and a resolution of 150 aF, and the capability of temporal, spatial, and dielectric sensing. It makes it possible to develop a low-cost, multimodal, calibration-free sensing platform for life science applications. Here, we demonstrate and discuss the functionality and applicability of the proposed sensing device by introducing various chemical solvents including ethanol, methanol, and pure water. The simulation and experimental results achieved in this work have taken us one step closer to a fully automated calibration-free multimodal capacitive sensing platform for high-throughput drug development and other purposes.
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8
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Hu W, Wu B, Srivastava SK, Ay SU. Comparative Study and Simulation of Capacitive Sensors in Microfluidic Channels for Sensitive Red Blood Cell Detection. MICROMACHINES 2022; 13:mi13101654. [PMID: 36296007 PMCID: PMC9610494 DOI: 10.3390/mi13101654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/23/2022] [Accepted: 09/28/2022] [Indexed: 05/25/2023]
Abstract
Microfluidics provides an indispensable platform for combining analytical operations such as sample preparation, mixing, separation/enrichment, and detection onto a single compact platform, defined as a lab-on-a-chip (LOC) device with applicability in biomedical and life science applications. Due to its ease of integration, 1D interdigital capacitive (IDC) sensors have been used in microfluidic platforms to detect particles of interest. This paper presents a comparative study on the use of capacitive sensors for microfluidic devices to detect bioparticles, more specifically red blood cells (RBCs). The detection sensitivities of 1D, 2D, and 3D capacitive sensors were determined by simulation using COMSOL Multiphysics® v5.5. A water-filled 25 μm × 25 μm PDMS microfluidic channel was used with different sizes (5-10 μm) of red blood cells passing across the capacitive sensor regions. The conformal mapping was used for translating the 1D IDC sensor dimensions into equivalent 2D/3D parallel plate capacitance (PPC) sensor dimensions, creating similar absolute sensor capacitance. The detection sensitivity of each capacitive sensor is determined, and a new 3D PPC sensor structure was proposed to improve the sensitivity for high-resolution RBC detection in microfluidic channels. Proposed 2D and 3D sensors provide a 3× to 20× improvement in sensitivity compared to the standard 1D IDC structures, achieving a 100 aF capacitance difference when a healthy RBC passes in the structure.
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Affiliation(s)
- Wei Hu
- Thermo Fisher Scientific, Jinke Road 2537, Pudong District, Shanghai 201206, China
| | - Bingxing Wu
- Thermo Fisher Scientific, Jinke Road 2537, Pudong District, Shanghai 201206, China
| | - Soumya K. Srivastava
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506-6102, USA
| | - Suat Utku Ay
- Department of Electrical and Computer Engineering, University of Idaho, Moscow, ID 83844-1023, USA
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9
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Mandal D, Indaleeb MM, Younan A, Banerjee S. Piezoelectric point-of-care biosensor for the detection of SARS-COV-2 (COVID-19) antibodies. SENSING AND BIO-SENSING RESEARCH 2022; 37:100510. [PMID: 35855937 PMCID: PMC9279182 DOI: 10.1016/j.sbsr.2022.100510] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/29/2022] [Accepted: 07/12/2022] [Indexed: 12/31/2022] Open
Abstract
It is always challenging to diagnose a disease using a biosensor reliably, and quickly with high sensitivity and selectivity, simultaneosuly. Recently the world experienced a global pandemic caused by a novel coronavirus (COVID-19). Although the vaccines are available, COVID-19 resulted a huge threat to the entire world with high mortality rates. Irrespective of a specific disease, there is a constant need for a cheaper and faster in-vitro, lab-on-a-chip sensor with high sensitivity and selectivity. Such sensors will not only facilitate the disease detection but will expedite and vaccine development process through detection of its corresponding antibodies when developed. In this article, we present an ultrasonic guided wave sensor using 128° YX lithium niobate piezoelectric wafer, specially designed in a shape of a multi-threaded comb with cantilever beams which is equally selective and sensitive for the detection of corresponding antigen-antibody assays. As a proof of concept in this article, the diagnostic sensor is created and tested for detection of SARS-COV-2 antibodies. Sensors were functionalized with SARS-COV-2 antigens and target antibody for the same was detected. Unique and judicially tuned acoustic features are analyzed for successful detection of the right antibodies. The proposed lab-on-a-chip device utilizes a wide range of diagnostic frequencies resulting into a highly sensitive platform for the diagnostics even to the slightest biophysical changes. The proposed sensor is also believed to extend to the detection of various other antigens/antibodies of different diseases in the future.
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Affiliation(s)
- Debdyuti Mandal
- Integrated Material Assessment and Predictive Simulation Laboratory, University of South Carolina, Columbia, SC, USA
| | - Mustahseen M Indaleeb
- Integrated Material Assessment and Predictive Simulation Laboratory, University of South Carolina, Columbia, SC, USA
| | - Alexandra Younan
- Integrated Material Assessment and Predictive Simulation Laboratory, University of South Carolina, Columbia, SC, USA
| | - Sourav Banerjee
- Integrated Material Assessment and Predictive Simulation Laboratory, University of South Carolina, Columbia, SC, USA
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Georgas A, Lampas E, Houhoula D, Skoufias A, Patsilinakos S, Tsafaridis I, Patrinos G, Adamopoulos N, Ferraro A, Hristoforou E. ACE2-based capacitance sensor for rapid native SARS-CoV-2 detection in biological fluids and its correlation with real-time PCR. Biosens Bioelectron 2022; 202:114021. [PMID: 35092924 PMCID: PMC8776344 DOI: 10.1016/j.bios.2022.114021] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 01/13/2022] [Accepted: 01/17/2022] [Indexed: 12/14/2022]
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11
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Shen YC, Wang CP, Liou KL, Tan PH, Wang YC, Wu SC, Yang TY, Yu YJ, Chiang TY, Chih YD, Chang J, Shih JR, Lin CJ, King YC, Chueh YL. Multifunctional Ion-Sensitive Floating Gate Fin Field-Effect Transistor with Three-Dimensional Nanoseaweed Structure by Glancing Angle Deposition Technology. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104168. [PMID: 34821034 DOI: 10.1002/smll.202104168] [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: 07/25/2021] [Revised: 09/12/2021] [Indexed: 06/13/2023]
Abstract
A multifunctional ion-sensitive floating gate Fin field-effect transistor (ISFGFinFET) for hydrogen and sodium detection is demonstrated. The ISFGFinFET comprises a FGFET and a sensing film, both of which are used to detect and improve sensitivity. The sensitivity of the ISFGFinFET can be adjusted by modulating the coupling effect of the FG. A nanoseaweed structure is fabricated via glancing angle deposition (GLAD) technology to obtain a large sensing area to enhance the sensitivity for hydrogen ion detection. A sensitivity of 266 mV per pH can be obtained using a surface area of 3.28 mm2 . In terms of sodium ion detection, a calix[4]arene sensing film to monitor sodium ions, obtaining a Na+ sensitivity of 432.7 mV per pNa, is used. In addition, the ISFGFinFET demonstrates the functionality of multiple ions detection simultaneously. The sensor arrays composed of 3 × 3 pixels are demonstrated, each of which comprise of an FGFET sensor and a transistor. Furthermore, 16 × 16 arrays with a decoder and other peripheral circuits are constructed and simulated. The performance of the proposed ISFGFinFET is competitive with that of other state-of-the-art ion sensors.
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Affiliation(s)
- Ying-Chun Shen
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Chien-Ping Wang
- Institute of Electronics Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Kun-Lin Liou
- Institute of Electronics Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Po-Hung Tan
- Institute of Electronics Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yi-Chung Wang
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Shu-Chi Wu
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Tzu-Yi Yang
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
| | - Yi-Jen Yu
- Instrument Center, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Tsung-Yu Chiang
- Design Technology Division, Taiwan Semiconductor Manufacturing Company, Hsinchu, Taiwan
| | - Yue-Der Chih
- Design Technology Division, Taiwan Semiconductor Manufacturing Company, Hsinchu, Taiwan
| | - Jonathan Chang
- Design Technology Division, Taiwan Semiconductor Manufacturing Company, Hsinchu, Taiwan
| | - Jiaw-Ren Shih
- Institute of Electronics Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Chrong Jung Lin
- Institute of Electronics Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Ya-Chin King
- Institute of Electronics Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yu-Lun Chueh
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Department of Physics, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan
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12
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Grenzebach J, Romanus E. Quantifying the Effect of Noise on Cognitive Processes: A Review of Psychophysiological Correlates of Workload. Noise Health 2022; 24:199-214. [PMID: 36537445 PMCID: PMC10088430 DOI: 10.4103/nah.nah_34_22] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Noise is present in most work environments, including emissions from machines and devices, irrelevant speech from colleagues, and traffic noise. Although it is generally accepted that noise below the permissible exposure limits does not pose a considerable risk for auditory effects like hearing impairments. Yet, noise can have a direct adverse effect on cognitive performance (non-auditory effects like workload or stress). Under certain circumstances, the observable performance for a task carried out in silence compared to noisy surroundings may not differ. One possible explanation for this phenomenon needs further investigation: individuals may invest additional cognitive resources to overcome the distraction from irrelevant auditory stimulation. Recent developments in measurements of psychophysiological correlates and analysis methods of load-related parameters can shed light on this complex interaction. These objective measurements complement subjective self-report of perceived effort by quantifying unnoticed noise-related cognitive workload. In this review, literature databases were searched for peer-reviewed journal articles that deal with an at least partially irrelevant "auditory stimulation" during an ongoing "cognitive task" that is accompanied by "psychophysiological correlates" to quantify the "momentary workload." The spectrum of assessed types of "auditory stimulations" extended from speech stimuli (varying intelligibility), oddball sounds (repeating short tone sequences), and auditory stressors (white noise, task-irrelevant real-life sounds). The type of "auditory stimulation" was related (speech stimuli) or unrelated (oddball, auditory stressor) to the type of primary "cognitive task." The types of "cognitive tasks" include speech-related tasks, fundamental psychological assessment tasks, and real-world/simulated tasks. The "psychophysiological correlates" include pupillometry and eye-tracking, recordings of brain activity (hemodynamic, potentials), cardiovascular markers, skin conductance, endocrinological markers, and behavioral markers. The prevention of negative effects on health by unexpected stressful soundscapes during mental work starts with the continuous estimation of cognitive workload triggered by auditory noise. This review gives a comprehensive overview of methods that were tested for their sensitivity as markers of workload in various auditory settings during cognitive processing.
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13
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Wu C, Barkova D, Komarova N, Offenhäusser A, Andrianova M, Hu Z, Kuznetsov A, Mayer D. Highly selective and sensitive detection of glutamate by an electrochemical aptasensor. Anal Bioanal Chem 2021; 414:1609-1622. [PMID: 34783880 DOI: 10.1007/s00216-021-03783-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/21/2021] [Accepted: 11/09/2021] [Indexed: 01/03/2023]
Abstract
An electrochemical aptamer-based sensor was developed for glutamate, the major excitatory neurotransmitter in the central nervous system. Determining glutamic acid release and glutamic acid levels is crucial for studying signal transmission and for diagnosing pathological conditions in the brain. Glutamic acid-selective oligonucleotides were isolated from an ssDNA library using the Capture-SELEX protocol in complex medium. The selection permitted the isolation of an aptamer 1d04 with a dissociation constant of 12 µM. The aptamer sequence was further used in the development of an electrochemical aptamer sensor. For this purpose, a truncated aptamer sequence named glu1 was labelled with a ferrocene redox tag at the 3'-end and immobilized on a gold electrode surface via Au-thiol bonds. Using 6-mercapto-1-hexanol as the backfill, the sensor performance was characterized by alternating current voltammetry. The glu1 aptasensor showed a limit of detection of 0.0013 pM, a wide detection range between 0.01 pM and 1 nM, and good selectivity for glutamate in tenfold diluted human serum. With this enzyme-free aptasensor, the highly selective and sensitive detection of glutamate was demonstrated, which possesses great potential for implementation in microelectrodes and for in vitro as well as in vivo monitoring of neurotransmitter release.
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Affiliation(s)
- Changtong Wu
- Institute of Biological Information Processing, (IBI-3), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Faculty I, RWTH Aachen University, 52062, Aachen, Germany
| | - Daria Barkova
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, Moscow, 124498, Russia
| | - Natalia Komarova
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, Moscow, 124498, Russia
| | - Andreas Offenhäusser
- Institute of Biological Information Processing, (IBI-3), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.,Faculty I, RWTH Aachen University, 52062, Aachen, Germany
| | - Mariia Andrianova
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, Moscow, 124498, Russia
| | - Ziheng Hu
- Institute of Biological Information Processing, (IBI-3), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - Alexander Kuznetsov
- Scientific-Manufacturing Complex Technological Centre, 1-7 Shokin Square, Zelenograd, Moscow, 124498, Russia.
| | - Dirk Mayer
- Institute of Biological Information Processing, (IBI-3), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.
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14
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Zhang G, Zeng H, Liu J, Nagashima K, Takahashi T, Hosomi T, Tanaka W, Yanagida T. Nanowire-based sensor electronics for chemical and biological applications. Analyst 2021; 146:6684-6725. [PMID: 34667998 DOI: 10.1039/d1an01096d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Detection and recognition of chemical and biological species via sensor electronics are important not only for various sensing applications but also for fundamental scientific understanding. In the past two decades, sensor devices using one-dimensional (1D) nanowires have emerged as promising and powerful platforms for electrical detection of chemical species and biologically relevant molecules due to their superior sensing performance, long-term stability, and ultra-low power consumption. This paper presents a comprehensive overview of the recent progress and achievements in 1D nanowire synthesis, working principles of nanowire-based sensors, and the applications of nanowire-based sensor electronics in chemical and biological analytes detection and recognition. In addition, some critical issues that hinder the practical applications of 1D nanowire-based sensor electronics, including device reproducibility and selectivity, stability, and power consumption, will be highlighted. Finally, challenges, perspectives, and opportunities for developing advanced and innovative nanowire-based sensor electronics in chemical and biological applications are featured.
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Affiliation(s)
- Guozhu Zhang
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan.
| | - Hao Zeng
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan.
| | - Jiangyang Liu
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan.
| | - Kazuki Nagashima
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan. .,JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Tsunaki Takahashi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan. .,JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Takuro Hosomi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan. .,JST-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Wataru Tanaka
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan.
| | - Takeshi Yanagida
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8654, Japan. .,Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka, 816-8580, Japan
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15
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Muzyka K, Xu G. Laser‐induced Graphene in Facts, Numbers, and Notes in View of Electroanalytical Applications: A Review. ELECTROANAL 2021. [DOI: 10.1002/elan.202100425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Kateryna Muzyka
- Laboratory of Analytical Optochemotronics Department of Biomedical Engineering Kharkiv National University of RadioElectronics Kharkiv 61166 Ukraine
| | - Guobao Xu
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 PR China
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16
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Liu D, Zhou L, Huang L, Zuo Z, Ho V, Jin L, Lu Y, Chen X, Zhao J, Qian D, Liu H, Mao H. Microfluidic integrated capacitive biosensor for C-reactive protein label-free and real-time detection. Analyst 2021; 146:5380-5388. [PMID: 34338259 DOI: 10.1039/d1an00464f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A microfluidic chip has been integrated with a capacitive biosensor based on mass-producible three-dimensional (3D) interdigital electrode arrays. To achieve the monitoring of biosensor preparation and cardiac- and periodontitis-related biomarkers, all the processes were detected in a continuously on-site way. Fabrication steps for the microfluidic chip-bonded 3D interdigital capacitor biosensor include gold thiol modification, the activation of EDC/sulfo-NHS, and the bioconjugation of antibodies. Fluorescent characterization and X-ray photoelectron spectroscopy analysis were applied to assess the successful immobilization of the C-reactive protein (CRP) antibody. The experimental results indicate the good specificity and high sensitivity of the microfluidic integrated 3D capacitive biosensor. The limit of detection of the 3D capacitive biosensor for CRP label-free detection was about 1 pg mL-1. This 3D capacitive biosensor with integrated microfluidics is mass-producible and has achieved the on-site continuous detection of cardiac- and periodontitis-related biomarkers with high performance.
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Affiliation(s)
- Danyang Liu
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
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17
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Dizon A, You C, Orazem ME. The influence of current and potential distribution on the measurement of dielectric permittivity. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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18
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Dudala S, Srikanth S, Dubey SK, Javed A, Goel S. Rapid Inkjet-Printed Miniaturized Interdigitated Electrodes for Electrochemical Sensing of Nitrite and Taste Stimuli. MICROMACHINES 2021; 12:mi12091037. [PMID: 34577681 PMCID: PMC8470320 DOI: 10.3390/mi12091037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 12/04/2022]
Abstract
This paper reports on single step and rapid fabrication of interdigitated electrodes (IDEs) using an inkjet printing-based approach. A commercial inkjet-printed circuit board (PCB) printer was used to fabricate the IDEs on a glass substrate. The inkjet printer was optimized for printing IDEs on a glass substrate using a carbon ink with a specified viscosity. Electrochemical impedance spectroscopy in the frequency range of 1 Hz to 1 MHz was employed for chemical sensing applications using an electrochemical workstation. The IDE sensors demonstrated good nitrite quantification abilities, detecting a low concentration of 1 ppm. Taste simulating chemicals were used to experimentally analyze the ability of the developed sensor to detect and quantify tastes as perceived by humans. The performance of the inkjet-printed IDE sensor was compared with that of the IDEs fabricated using maskless direct laser writing (DLW)-based photolithography. The DLW–photolithography-based fabrication approach produces IDE sensors with excellent geometric tolerances and better sensing performance. However, inkjet printing provides IDE sensors at a fraction of the cost and time. The inkjet printing-based IDE sensor, fabricated in under 2 min and costing less than USD 0.3, can be adapted as a suitable IDE sensor with rapid and scalable fabrication process capabilities.
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Affiliation(s)
- Sohan Dudala
- MEMS, Microfluidics and Nanoelectronics Lab, Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India; (S.D.); (S.S.); (S.K.D.); (A.J.)
| | - Sangam Srikanth
- MEMS, Microfluidics and Nanoelectronics Lab, Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India; (S.D.); (S.S.); (S.K.D.); (A.J.)
- Department of Mechanical Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Satish Kumar Dubey
- MEMS, Microfluidics and Nanoelectronics Lab, Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India; (S.D.); (S.S.); (S.K.D.); (A.J.)
- Department of Mechanical Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Arshad Javed
- MEMS, Microfluidics and Nanoelectronics Lab, Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India; (S.D.); (S.S.); (S.K.D.); (A.J.)
- Department of Mechanical Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India
| | - Sanket Goel
- MEMS, Microfluidics and Nanoelectronics Lab, Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad 500078, India; (S.D.); (S.S.); (S.K.D.); (A.J.)
- Correspondence:
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19
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Hwang C, Park N, Kim ES, Kim M, Kim SD, Park S, Kim NY, Kim JH. Ultra-fast and recyclable DNA biosensor for point-of-care detection of SARS-CoV-2 (COVID-19). Biosens Bioelectron 2021; 185:113177. [PMID: 33915435 PMCID: PMC7987504 DOI: 10.1016/j.bios.2021.113177] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 02/17/2021] [Accepted: 03/14/2021] [Indexed: 12/13/2022]
Abstract
Rapid diagnosis and case isolation are pivotal to controlling the current pandemic of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). In this study, a label-free DNA capacitive biosensor for the detection of SARS-CoV-2 that demonstrates real-time, low-cost, and high-throughput screening of nucleic acid samples is presented. Our novel biosensor composed of the interdigitated platinum/titanium electrodes on the glass substrate can detect the hybridization of analyte DNA with probe DNA. The hybridization signals of specific DNA sequences were verified through exhaustive physicochemical analytical techniques such as Fourier transform infrared (FT-IR) spectrometry, contact-angle analysis, and capacitance-frequency measurements. For a single-step hybridized reaction, the fabricated kit exhibited significant sensitivity (capacitance change, ΔC = ~2 nF) in detecting the conserved region of the SARS-CoV-2 RNA-dependent RNA polymerase (RdRp) gene with high sensitivity of 0.843 nF/nM. In addition to capacitive measurements, this selective detection was confirmed by the fluorescence image and intensity from a SARS-CoV-2 gene labeled with a fluorescent dye. We also demonstrated that the kits are recyclable by surface ozone treatment using UV irradiation. Thus, these kits could potentially be applied to various types of label-free DNA, thereby acting as rapid, cost-effective biosensors for several diseases.
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Affiliation(s)
- Chuljin Hwang
- College of Pharmacy, Ajou University, Suwon 16499, South Korea
| | - Nakkyun Park
- College of Pharmacy, Ajou University, Suwon 16499, South Korea
| | - Eun Seong Kim
- Electronic Engineering, Kwangwoon University, Seoul 01897, South Korea
| | - Miran Kim
- Ajou University School of Medicine, Suwon 16499, South Korea
| | - Su Dong Kim
- Graduate School of Clinical Pharmacy and Pharmaceutics, Ajou University, Suwon,16499, South Korea
| | - Sungjun Park
- Department of Electrical and Computer Engineering, Ajou University, Suwon 16499, South Korea.
| | - Nam Young Kim
- Electronic Engineering, Kwangwoon University, Seoul 01897, South Korea; Graduate School of Clinical Pharmacy and Pharmaceutics, Ajou University, Suwon,16499, South Korea.
| | - Joo Hee Kim
- College of Pharmacy, Ajou University, Suwon 16499, South Korea; Graduate School of Clinical Pharmacy and Pharmaceutics, Ajou University, Suwon,16499, South Korea.
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20
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Forouhi S, Ghafar-Zadeh E. Applications of CMOS Devices for the Diagnosis and Control of Infectious Diseases. MICROMACHINES 2020; 11:E1003. [PMID: 33202888 PMCID: PMC7698050 DOI: 10.3390/mi11111003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/03/2020] [Accepted: 11/06/2020] [Indexed: 12/25/2022]
Abstract
Emerging infectious diseases such as coronavirus disease of 2019 (COVID-19), Ebola, influenza A, severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS) in recent years have threatened the health and security of the global community as one of the greatest factors of mortality in the world. Accurate and immediate diagnosis of infectious agents and symptoms is a key to control the outbreak of these diseases. Rapid advances in complementary metal-oxide-semiconductor (CMOS) technology offers great advantages like high accuracy, high throughput and rapid measurements in biomedical research and disease diagnosis. These features as well as low cost, low power and scalability of CMOS technology can pave the way for the development of powerful devices such as point-of-care (PoC) systems, lab-on-chip (LoC) platforms and symptom screening devices for accurate and timely diagnosis of infectious diseases. This paper is an overview of different CMOS-based devices such as optical, electrochemical, magnetic and mechanical sensors developed by researchers to mitigate the problems associated with these diseases.
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Affiliation(s)
- Saghi Forouhi
- Biologically Inspired Sensors and Actuators (BioSA), Department of Electrical Engineering and Computer Science (EECS), Lassonde School of Engineering, York University, Toronto, ON M3J 1P3, Canada;
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21
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Label-Free Oligonucleotide-Based SPR Biosensor for the Detection of the Gene Mutation Causing Prothrombin-Related Thrombophilia. SENSORS 2020; 20:s20216240. [PMID: 33142935 PMCID: PMC7663036 DOI: 10.3390/s20216240] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/25/2020] [Accepted: 10/29/2020] [Indexed: 12/31/2022]
Abstract
Prothrombin-related thrombophilia is a genetic disorder produced by a substitution of a single DNA base pair, replacing guanine with adenine, and is detected mainly by polymerase chain reaction (PCR). A suitable alternative that could detect the single point mutation without requiring sample amplification is the surface plasmon resonance (SPR) technique. SPR biosensors are of great interest: they offer a platform to monitor biomolecular interactions, are highly selective, and enable rapid analysis in real time. Oligonucleotide-based SPR biosensors can be used to differentiate complementary sequences from partially complementary or noncomplementary strands. In this work, a glass chip covered with an ultrathin (50 nm) gold film was modified with oligonucleotide strands complementary to the mutated or normal (nonmutated) DNA responsible for prothrombin-related thrombophilia, forming two detection platforms called mutated thrombophilia (MT) biosensor and normal thrombophilia (NT) biosensor. The results show that the hybridization response is obtained in 30 min, label free and with high reproducibility. The sensitivity obtained in both systems was approximately 4 ΔμRIU/nM. The dissociation constant and limits of detection calculated were 12.2 nM and 20 pM (3 fmol), respectively, for the MT biosensor, and 8.5 nM and 30 pM (4.5 fmol) for the NT biosensor. The two biosensors selectively recognize their complementary strand (mutated or normal) in buffer solution. In addition, each platform can be reused up to 24 times when the surface is regenerated with HCl. This work contributes to the design of the first SPR biosensor for the detection of prothrombin-related thrombophilia based on oligonucleotides with single point mutations, label-free and without the need to apply an amplification method.
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22
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Shauloff N, Teradal NL, Jelinek R. Porous Graphene Oxide-Metal Ion Composite for Selective Sensing of Organophosphate Gases. ACS Sens 2020; 5:1573-1581. [PMID: 32449345 DOI: 10.1021/acssensors.9b02367] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Organophosphates are used as agricultural pesticides and also encountered as toxic nerve agents in chemical warfare. Accordingly, development of sensors for detecting and monitoring organophosphate vapors is highly sought after. We present a new capacitive gas sensor exhibiting remarkable specificity and sensitivity toward the organophosphate nerve gas simulants triethyl-phosphate (TEP) and dimethyl methyl phosphate and the pesticide dichlorvos. Specifically, the capacitive sensor comprises a composite porous graphene oxide matrix intercalating cobalt or nickel ions, prepared through a simple freeze-drying procedure. We demonstrate that the porous graphene oxide/metal ion electrode undergoes fast capacitance changes only upon exposure to organophosphate vapors. Moreover, the sensor exhibits extraordinary sensitivity upon interactions with TEP. Detailed mechanistic analyses, carried out in comparison to porous graphene oxide coupled to other transition metal ions, reveal that the remarkable sensing properties of the Co2+ or Ni2+/porous graphene oxide systems likely arise from the distinct mode of metal ion incorporation into the graphene oxide host matrix and substitution of metal-complexed water ligands with organophosphate molecules. The new metal ion/porous graphene oxide capacitive sensor may be employed for alerting and monitoring organophosphate gases in different environments.
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Affiliation(s)
- Nitzan Shauloff
- Department of Chemistry, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Nagappa L. Teradal
- Department of Chemistry, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Raz Jelinek
- Department of Chemistry, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
- Ilse Katz Institute for Nanotechnology, Ben Gurion University of the Negev, Beer Sheva 84105, Israel
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23
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Yagati AK, Behrent A, Beck S, Rink S, Goepferich AM, Min J, Lee MH, Baeumner AJ. Laser-induced graphene interdigitated electrodes for label-free or nanolabel-enhanced highly sensitive capacitive aptamer-based biosensors. Biosens Bioelectron 2020; 164:112272. [PMID: 32553348 DOI: 10.1016/j.bios.2020.112272] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/07/2020] [Accepted: 05/02/2020] [Indexed: 12/21/2022]
Abstract
Highly porous laser-induced graphene (LIG) is easily generated in complex electrode configurations such as interdigitated electrodes (IDEs). Here, we demonstrate that their superior capacitive response at low frequencies can be exploited in affinity biosensors using thrombin aptamers as model biorecognition elements. Of specific interest was the effect of electrode surface area on capacitance detection, and the comparison between a label-free format and enhancement strategies afforded by carboxy group bearing polymeric nanoparticles or liposomes. Electrochemical impedance spectroscopy (EIS) was used to investigate the LIG performance and optimize the biosensor design. Interestingly, the label-free strategy performed extremely well and additional labels decreased the limit of detection or increased the sensitivity only minimally. It is assumed that the highly porous nature of the LIG structures dominates the capacitive response so that labels removed from the surface have only limited influence Also, while slight performance changes can be observed for smaller vs. larger electrode structures, the performance of a LIG IDE is reasonably independent of its size. In the end, a dynamic range of 5 orders of magnitude was obtained (0.01 nM-1000 nM) with a limit of detection as low as 0.12 pM. When measured in serum, this increased to 1.3 pM. The good reproducibility (relative standard deviation (RSD), 4.90%) and repeatability (RSD, 2.59%) and good long-term stability (>7 weeks at 4 °C) prove that a LIG-based capacitance sensor is an excellent choice for affinity-based biosensor. The ease-of-production, the simplicity of modification and the superior performance even in a label-free format indicate that LIG-based biosensors should be considered in point-of-care diagnostics in the future.
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Affiliation(s)
- Ajay Kumar Yagati
- Institute of Analytical Chemistry, Chemo-and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, 31, 93053, Regensburg, Germany; School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-Gu, 06974, Seoul, Republic of Korea
| | - Arne Behrent
- Institute of Analytical Chemistry, Chemo-and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, 31, 93053, Regensburg, Germany
| | - Sebastian Beck
- Department of Pharmaceutical Technology, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Simone Rink
- Institute of Analytical Chemistry, Chemo-and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, 31, 93053, Regensburg, Germany
| | - Achim M Goepferich
- Department of Pharmaceutical Technology, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Junhong Min
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-Gu, 06974, Seoul, Republic of Korea.
| | - Min-Ho Lee
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-Gu, 06974, Seoul, Republic of Korea.
| | - Antje J Baeumner
- Institute of Analytical Chemistry, Chemo-and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, 31, 93053, Regensburg, Germany.
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24
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Surface Display Technology for Biosensor Applications: A Review. SENSORS 2020; 20:s20102775. [PMID: 32414189 PMCID: PMC7294428 DOI: 10.3390/s20102775] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/24/2020] [Accepted: 05/11/2020] [Indexed: 02/06/2023]
Abstract
Surface display is a recombinant technology that expresses target proteins on cell membranes and can be applied to almost all types of biological entities from viruses to mammalian cells. This technique has been used for various biotechnical and biomedical applications such as drug screening, biocatalysts, library screening, quantitative assays, and biosensors. In this review, the use of surface display technology in biosensor applications is discussed. In detail, phage display, bacterial surface display of Gram-negative and Gram-positive bacteria, and eukaryotic yeast cell surface display systems are presented. The review describes the advantages of surface display systems for biosensor applications and summarizes the applications of surface displays to biosensors.
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25
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Deshmukh R, Prusty AK, Roy U, Bhand S. A capacitive DNA sensor for sensitive detection ofEscherichia coliO157:H7 in potable water based on thez3276genetic marker: fabrication and analytical performance. Analyst 2020; 145:2267-2278. [DOI: 10.1039/c9an02291k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We report a label-free biosensor for the detection ofEscherichia coliO157:H7 ATCC 43895 in potable water using a newly designed DNA sensing probe targeting thez3276genetic marker.
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Affiliation(s)
- Rehan Deshmukh
- Birla institute of Technology and Science
- Pilani
- Department of Biological Sciences
- India
| | - Arun Kumar Prusty
- Birla institute of Technology and Science
- Pilani
- Department of Chemistry
- India
| | - Utpal Roy
- Birla institute of Technology and Science
- Pilani
- Department of Biological Sciences
- India
| | - Sunil Bhand
- Birla institute of Technology and Science
- Pilani
- Department of Chemistry
- India
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26
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Simple rolling circle amplification colorimetric assay based on pH for target DNA detection. Talanta 2019; 201:419-425. [DOI: 10.1016/j.talanta.2019.04.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 04/02/2019] [Accepted: 04/02/2019] [Indexed: 02/02/2023]
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27
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Ibáñez-Redín G, Furuta RH, Wilson D, Shimizu FM, Materon EM, Arantes LMRB, Melendez ME, Carvalho AL, Reis RM, Chaur MN, Gonçalves D, Oliveira Jr ON. Screen-printed interdigitated electrodes modified with nanostructured carbon nano-onion films for detecting the cancer biomarker CA19-9. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:1502-1508. [DOI: 10.1016/j.msec.2019.02.065] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 02/01/2019] [Accepted: 02/16/2019] [Indexed: 10/27/2022]
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28
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Yang C, Ji XF, Cao WQ, Wang J, Zhang Q, Zhong TL, Wang Y. Molecularly imprinted polymer based sensor directly responsive to attomole bovine serum albumin. Talanta 2019; 196:402-407. [DOI: 10.1016/j.talanta.2018.12.097] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 11/21/2018] [Accepted: 12/29/2018] [Indexed: 02/07/2023]
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29
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Bergdahl GE, Hedström M, Mattiasson B. Capacitive Sensor to Monitor Enzyme Activity by Following Degradation of Macromolecules in Real Time. Appl Biochem Biotechnol 2019; 189:374-383. [PMID: 31020512 PMCID: PMC6754820 DOI: 10.1007/s12010-019-03006-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 03/27/2019] [Indexed: 11/29/2022]
Abstract
A capacitive sensor was developed to analyze the presence and enzymatic activity of a model protease from standard solutions by following the degradation of the substrate in real time. The enzyme was chosen based on its specific digestion of the hinge region of immunoglobulin G (IgG). Real-time enzyme activity was monitored by measuring the change in capacitance (∆C) based on the release of IgG fragments after enzymatic digestion by the enzyme. The results indicated that the developed capacitive system might be used successfully for label-free and real-time monitoring of enzymatic activity of different enzymes in a sensitive, rapid, and inexpensive manner in biotechnological, environmental, and clinical applications.
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Affiliation(s)
- Gizem Ertürk Bergdahl
- CapSenze Biosystems AB, Lund, Sweden. .,Department of Biotechnology, Lund University, Lund, Sweden.
| | - Martin Hedström
- CapSenze Biosystems AB, Lund, Sweden.,Department of Biotechnology, Lund University, Lund, Sweden
| | - Bo Mattiasson
- CapSenze Biosystems AB, Lund, Sweden.,Department of Biotechnology, Lund University, Lund, Sweden
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30
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Ghoneim MT, Nguyen A, Dereje N, Huang J, Moore GC, Murzynowski PJ, Dagdeviren C. Recent Progress in Electrochemical pH-Sensing Materials and Configurations for Biomedical Applications. Chem Rev 2019; 119:5248-5297. [PMID: 30901212 DOI: 10.1021/acs.chemrev.8b00655] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
pH-sensing materials and configurations are rapidly evolving toward exciting new applications, especially those in biomedical applications. In this review, we highlight rapid progress in electrochemical pH sensors over the past decade (2008-2018) with an emphasis on key considerations, such as materials selection, system configurations, and testing protocols. In addition to recent progress in optical pH sensors, our main focus in this review is on electromechanical pH sensors due to their significant advances, especially in biomedical applications. We summarize developments of electrochemical pH sensors that by virtue of their optimized material chemistries (from metal oxides to polymers) and geometrical features (from thin films to quantum dots) enable their adoption in biomedical applications. We further present an overview of necessary sensing standards and protocols. Standards ensure the establishment of consistent protocols, facilitating collective understanding of results and building on the current state. Furthermore, they enable objective benchmarking of various pH-sensing reports, materials, and systems, which is critical for the overall progression and development of the field. Additionally, we list critical issues in recent literary reporting and suggest various methods for objective benchmarking. pH regulation in the human body and state-of-the-art pH sensors (from ex vivo to in vivo) are compared for suitability in biomedical applications. We conclude our review by (i) identifying challenges that need to be overcome in electrochemical pH sensing and (ii) providing an outlook on future research along with insights, in which the integration of various pH sensors with advanced electronics can provide a new platform for the development of novel technologies for disease diagnostics and prevention.
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Chen HJ, Chen RLC, Hsieh BC, Hsiao HY, Kung Y, Hou YT, Cheng TJ. Label-free and reagentless capacitive aptasensor for thrombin. Biosens Bioelectron 2019; 131:53-59. [PMID: 30826650 DOI: 10.1016/j.bios.2019.02.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/10/2019] [Accepted: 02/06/2019] [Indexed: 12/14/2022]
Abstract
This investigation develops a label-free and reagentless aptasensor, based on a capacitive transducer with simple face-to-face electrode pairs. The electrode pairs of the transducer are composed of a gold electrode and an indium tin oxide film with micrometer separation with a double-side polyethylene terephthalate tape. Aptamers and 1-dodecanethiol are modified to form a self-assembled monolayer (SAM) on the gold electrode surfaces, and function as bio-recognition elements and preventers of non-specific protein binding, respectively. Electrochemical characterization results indicate that the SAM also forms an effective insulating layer, which is sufficient for capacitive sensing. The feasibility of the capacitive biosensor is validated using thrombin as a model analyte. The ultra-small value changes of capacitance originating from thrombin binding with the aptamers modified on the biosensor were measured with a home-made capacitance measuring circuit based on switched capacitor (SC) technology. The developed biosensor has detection limits of 1 pM and 10 pM of thrombin in phosphate buffered saline and mimic serum solution, respectively. The linear range for thrombin detection in human serum solution is from 10 pM to 1 μM, with a regression coefficient of 0.98. Additionally, the proposed aptasensor does not have significant levels of non-specific binding of bovine serum albumin and human serum albumin. Accordingly, the combination of SC and SAM bringing capacitive transduction at the forefront of ultrasensitive label-free and reagentless biosensing devices, particularly for point-of-care clinical analysis, which adopts small numbers of biological samples with low analyte concentrations.
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Affiliation(s)
- Hsin-Ju Chen
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Richie L C Chen
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Bo-Chuan Hsieh
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Hsien-Yi Hsiao
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Yi Kung
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Yung-Te Hou
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan
| | - Tzong-Jih Cheng
- Department of Bio-Industrial Mechatronics Engineering, College of Bio-Resources and Agriculture, National Taiwan University, Taipei, Taiwan; Department of Biomedical Engineering, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan.
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Nunna BB, Mandal D, Lee JU, Singh H, Zhuang S, Misra D, Bhuyian MNU, Lee ES. Detection of cancer antigens (CA-125) using gold nano particles on interdigitated electrode-based microfluidic biosensor. NANO CONVERGENCE 2019; 6:3. [PMID: 30652204 PMCID: PMC6335232 DOI: 10.1186/s40580-019-0173-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/07/2019] [Indexed: 05/23/2023]
Abstract
Integrating microfluidics with biosensors is of great research interest with the increasing trend of lab-on-the chip and point-of-care devices. Though there have been numerous studies performed relating microfluidics to the biosensing mechanisms, the study of the sensitivity variation due to microfluidic flow is very much limited. In this paper, the sensitivity of interdigitated electrodes was evaluated at the static drop condition and the microfluidic flow condition. In addition, this study demonstrates the use of gold nanoparticles to enhance the sensor signal response and provides experimental results of the capacitance difference during cancer antigen-125 (CA-125) antigen-antibody conjugation at multiple concentrations of CA-125 antigens. The experimental results also provide evidence of disease-specific detection of CA-125 antigen at multiple concentrations with the increase in capacitive signal response proportional to the concentration of the CA-125 antigens. The capacitive signal response of antigen-antibody conjugation on interdigitate electrodes has been enhanced by approximately 2.8 times (from 260.80 to 736.33 pF at 20 kHz frequency) in static drop condition and approximately 2.5 times (from 205.85 to 518.48 pF at 20 kHz frequency) in microfluidic flow condition with gold nanoparticle-coating. The capacitive signal response is observed to decrease at microfluidic flow condition at both plain interdigitated electrodes (from 260.80 to 205.85 pF at 20 kHz frequency) and gold nano particle coated interdigitated electrodes (from 736.33 to 518.48 pF at 20 kHz frequency), due to the strong shear effect compared to static drop condition. However, the microfluidic channel in the biosensor has the potential to increase the signal to noise ratio due to plasma separation from the whole blood and lead to the increase concentration of the biomarkers in the blood volume for sensing.
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Affiliation(s)
- Bharath Babu Nunna
- Advanced Energy Systems and Microdevices Laboratory, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, 200 Central Avenue, Rm MEC 327, Newark, NJ, 07102-1982, USA
| | - Debdyuti Mandal
- Advanced Energy Systems and Microdevices Laboratory, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, 200 Central Avenue, Rm MEC 327, Newark, NJ, 07102-1982, USA
| | - Joo Un Lee
- Provost Summer Research Intern at New Jersey Institute of Technology & Tenafly High School, Tenafly, NJ, USA
| | - Harsimranjit Singh
- Advanced Energy Systems and Microdevices Laboratory, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, 200 Central Avenue, Rm MEC 327, Newark, NJ, 07102-1982, USA
| | - Shiqiang Zhuang
- Advanced Energy Systems and Microdevices Laboratory, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, 200 Central Avenue, Rm MEC 327, Newark, NJ, 07102-1982, USA
| | - Durgamadhab Misra
- Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ, 07102, USA
| | - Md Nasir Uddin Bhuyian
- Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ, 07102, USA
| | - Eon Soo Lee
- Advanced Energy Systems and Microdevices Laboratory, Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, 200 Central Avenue, Rm MEC 327, Newark, NJ, 07102-1982, USA.
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Nunna BB, Mandal D, Lee JU, Zhuang S, Lee ES. Sensitivity Study of Cancer Antigens (CA-125) Detection Using Interdigitated Electrodes Under Microfluidic Flow Condition. BIONANOSCIENCE 2019. [DOI: 10.1007/s12668-018-0589-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Castiello FR, Porter J, Modarres P, Tabrizian M. Interfacial capacitance immunosensing using interdigitated electrodes: the effect of insulation/immobilization chemistry. Phys Chem Chem Phys 2019; 21:15787-15797. [DOI: 10.1039/c9cp02129a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
With the aim of improving the reproducibility of capacitive immunosensors, we performed a comparative study of four different insulating/immobilization chemistries.
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Affiliation(s)
| | - James Porter
- Biomedical Engineering Department
- McGill University
- Montreal
- Canada
| | - Paresa Modarres
- Biomedical Engineering Department
- McGill University
- Montreal
- Canada
| | - Maryam Tabrizian
- Biomedical Engineering Department
- McGill University
- Montreal
- Canada
- Faculty of Dentistry
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Ruffatto D, Glick PE, Tolley MT, Parness A. Long-Duration Surface Anchoring With a Hybrid Electrostatic and Gecko-Inspired Adhesive. IEEE Robot Autom Lett 2018. [DOI: 10.1109/lra.2018.2856366] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Gong Y, Fan N, Yang X, Peng B, Jiang H. New advances in microfluidic flow cytometry. Electrophoresis 2018; 40:1212-1229. [PMID: 30242856 DOI: 10.1002/elps.201800298] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 09/07/2018] [Accepted: 09/15/2018] [Indexed: 01/22/2023]
Abstract
In recent years, researchers are paying the increasing attention to the development of portable microfluidic diagnostic devices including microfluidic flow cytometry for the point-of-care testing. Microfluidic flow cytometry, where microfluidics and flow cytometry work together to realize novel functionalities on the microchip, provides a powerful tool for measuring the multiple characteristics of biological samples. The development of a portable, low-cost, and compact flow cytometer can benefit the health care in underserved areas such as Africa or Asia. In this article, we review recent advancements of microfluidics including sample pumping, focusing and sorting, novel detection approaches, and data analysis in the field of flow cytometry. The challenge of microfluidic flow cytometry is also examined briefly.
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Affiliation(s)
- Yanli Gong
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, P. R. China
| | - Na Fan
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, P. R. China
| | - Xu Yang
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, P. R. China
| | - Bei Peng
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, P. R. China
| | - Hai Jiang
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, P. R. China
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Shoute LCT, Anwar A, MacKay S, Abdelrasoul GN, Lin D, Yan Z, Nguyen AH, McDermott MT, Shah MA, Yang J, Chen J, Li XS. Immuno-impedimetric Biosensor for Onsite Monitoring of Ascospores and Forecasting of Sclerotinia Stem Rot of Canola. Sci Rep 2018; 8:12396. [PMID: 30120328 PMCID: PMC6098051 DOI: 10.1038/s41598-018-30167-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 07/01/2018] [Indexed: 12/01/2022] Open
Abstract
Sclerotinia stem rot, caused by the fungal pathogen Sclerotinia sclerotiorum, is a destructive disease of canola and many other broadleaf crops. The primary inoculum responsible for initiating Sclerotinia epidemics is airborne ascospores released from the apothecia of sclerotia. Timely detection of the presence of airborne ascospores can serve as an early-warning system for forecasting and management of the disease. A major challenge is to develop a portable and automated device which can be deployed onsite to detect and quantify the presence of minute quantities of ascospores in the air and serves as a unit in a network of systems for forecasting of the epidemic. In this communication, we present the development of an impedimetric non-Faradaic biosensor based on anti-S. sclerotiorum polyclonal antibodies as probes to selectively capture the ascospores and sense their binding by an impedance based interdigitated electrode which was found to directly and unambiguously correlate the number of ascospores on sensor surface with the impedance response.
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Affiliation(s)
- Lian C T Shoute
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
| | - Afreen Anwar
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
- Department of Botany, University of Kashmir, Srinagar, 190006, J&K, India
| | - Scott MacKay
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
| | - Gaser N Abdelrasoul
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
| | - Donghai Lin
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
| | - Zhimin Yan
- National Institute for Nanotechnology, National Research Council, Edmonton, AB, T6G 2M9, Canada
| | - Anh H Nguyen
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
| | - Mark T McDermott
- National Institute for Nanotechnology, National Research Council, Edmonton, AB, T6G 2M9, Canada
- Department of Chemistry, University of Alberta, Edmonton, AB, T6G 2E9, Canada
| | - Manzoor A Shah
- Department of Botany, University of Kashmir, Srinagar, 190006, J&K, India
| | - Jian Yang
- InnoTech Alberta, Vegreville, AB, T9C 1T4, Canada
| | - Jie Chen
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
- Department of Biomedical Engineering, University of Alberta, Edmonton, AB, T6G 2V4, Canada
- National Institute for Nanotechnology, National Research Council, Edmonton, AB, T6G 2M9, Canada
| | - Xiujie S Li
- InnoTech Alberta, Vegreville, AB, T9C 1T4, Canada.
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Reconfigurable Sensor Analog Front-End Using Low-Noise Chopper-Stabilized Delta-Sigma Capacitance-to-Digital Converter. MICROMACHINES 2018; 9:mi9070347. [PMID: 30424280 PMCID: PMC6082274 DOI: 10.3390/mi9070347] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 06/29/2018] [Accepted: 07/09/2018] [Indexed: 11/17/2022]
Abstract
This paper proposes a reconfigurable sensor analog front-end using low-noise chopper-stabilized delta-sigma capacitance-to-digital converter (CDC) for capacitive microsensors. The proposed reconfigurable sensor analog front-end can drive both capacitive microsensors and voltage signals by direct conversion without a front-end amplifier. The reconfigurable scheme of the front-end can be implemented in various multi-mode applications, where it is equipped with a fully integrated temperature sensor. A chopper stabilization technique is implemented here to achieve a low-noise characteristic by reducing unexpected low-frequency noises such as offsets and flicker noise. The prototype chip of the proposed sensor analog front-end is fabricated by a standard 0.18-μm 1-poly-6-metal (1P6M) complementary metal-oxide-semiconductor (CMOS) process. It occupies a total active area of 5.37 mm² and achieves an effective resolution of 16.3-bit. The total power consumption is 0.843 mW with a 1.8 V power supply.
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Alizadeh Zeinabad H, Ghourchian H, Falahati M, Fathipour M, Azizi M, Boutorabi SM. Ultrasensitive interdigitated capacitance immunosensor using gold nanoparticles. NANOTECHNOLOGY 2018; 29:265102. [PMID: 29629877 DOI: 10.1088/1361-6528/aabca3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Immunosensors based on interdigitated electrodes (IDEs), have recently demonstrated significant improvements in the sensitivity of capacitance detection. Herein, a novel type of highly sensitive, compact and portable immunosensor based on a gold interdigital capacitor has been designed and developed for the rapid detection of hepatitis B surface antigen (HBsAg). To improve the efficiency of antibody immobilization and time-saving, a self-assembled monolayer (SAM) of 2-mercaptoethylamine film was coated on IDEs. Afterwards, carboxyl groups on primary antibodies were activated through 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide and were immobilized on amino-terminated SAM for better control of the oriented immobilization of antibodies on gold IDEs. In addition, gold nanoparticles conjugated with a secondary antibody were used to enhance the sensitivity. Under optimal conditions, the immunosensor exhibited the sensitivity of 0.22 nF.pg ml-1, the linear range from 5 pg ml-1 to 1 ng ml-1 and the detection limit of 1.34 pg ml-1, at a signal-to-noise ratio of 3.
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Affiliation(s)
- Hojjat Alizadeh Zeinabad
- Laboratory of Bioanalysis, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran. MEMS & NEMS Lab, Department of Electrical and Computer Engineering, University of Tehran, Tehran, Iran. Department of Nanotechnology, Faculty of Advance Science and Technology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran
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40
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Zeininger L, He M, Hobson ST, Swager TM. Resistive and Capacitive γ-Ray Dosimeters Based On Triggered Depolymerization in Carbon Nanotube Composites. ACS Sens 2018; 3:976-983. [PMID: 29558118 PMCID: PMC6372115 DOI: 10.1021/acssensors.8b00108] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We report γ-ray dosimeters using carbon nanotubes wrapped with metastable poly(olefin sulfone)s (POSs) that readily depolymerize when exposed to ionizing radiation. New POSs, designed for wrapping single-walled carbon nanotubes (SWCNTs), are synthesized and characterized. The resulting POS-SWCNT composites serve as the active transducer in a novel class of γ-ray dosimeters. In our devices, polymer degradation results in immediate changes in the electronic potential of the POS-SWCNT active layers by decreasing the electron tunneling barriers between individualized tubes and by creating enhanced cofacial π-π electron contacts. By incorporating the SWCNT-POS composites into small resistive device platforms, we establish a rare example of real-time detection and dosimetry of radioactive ionizing radiation using organic-based materials. We show that the sensitivity of our platform closely depends on the intrinsic stability of the polymer matrix, the opacity toward γ-rays, and the dispersion efficiency (i.e., the individualization and isolation of the individual SWCNT charge carriers). Resistance decreases up to 65% after irradiation with a 40 krad dose demonstrates the high sensitivity of this novel class of γ-ray sensors. In addition, the detection mechanism was evaluated using a commercial capacitive device platform. The ease of fabrication and low power consumption of these small and inexpensive sensor platforms combined with appealing sensitivity parameters establishes the potential of the poly(olefin sulfone)-SWCNT composites to serve as a new transduction material in γ-ray sensor applications.
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Affiliation(s)
- Lukas Zeininger
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
| | - Maggie He
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
| | - Stephen T Hobson
- Seacoast Science Inc. , Carlsbad , California 92011 , United States
| | - Timothy M Swager
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
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41
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Muñoz J, Montes R, Baeza M. Trends in electrochemical impedance spectroscopy involving nanocomposite transducers: Characterization, architecture surface and bio-sensing. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.08.012] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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42
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Assen AH, Yassine O, Shekhah O, Eddaoudi M, Salama KN. MOFs for the Sensitive Detection of Ammonia: Deployment of fcu-MOF Thin Films as Effective Chemical Capacitive Sensors. ACS Sens 2017; 2:1294-1301. [PMID: 28809112 DOI: 10.1021/acssensors.7b00304] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This work reports on the fabrication and deployment of a select metal-organic framework (MOF) thin film as an advanced chemical capacitive sensor for the sensing/detection of ammonia (NH3) at room temperature. Namely, the MOF thin film sensing layer consists of a rare-earth (RE) MOF (RE-fcu-MOF) deposited on a capacitive interdigitated electrode (IDE). Purposely, the chemically stable naphthalene-based RE-fcu-MOF (NDC-Y-fcu-MOF) was elected and prepared/arranged as a thin film on a prefunctionalized capacitive IDE via the solvothermal growth method. Unlike earlier realizations, the fabricated MOF-based sensor showed a notable detection sensitivity for NH3 at concentrations down to 1 ppm, with a detection limit appraised to be around 100 ppb (at room temperature) even in the presence of humidity and/or CO2. Distinctly, the NDC-Y-fcu-MOF based sensor exhibited the required stability to NH3, in contrast to other reported MOFs, and a remarkable detection selectivity toward NH3 vs CH4, NO2, H2, and C7H8. The NDC-Y-fcu-MOF based sensor exhibited excellent performance for sensing ammonia for simulated breathing system in the presence of the mixture of carbon dioxide and/or humidity (water vapor), with no major alteration in the detection signal.
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Affiliation(s)
- Ayalew H. Assen
- Functional Materials Design, Discovery and Development research group (FMD3), Advanced Membranes & Porous Materials Center, Division of Physical Sciences and Engineering and ‡Electrical Engineering Program, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Omar Yassine
- Functional Materials Design, Discovery and Development research group (FMD3), Advanced Membranes & Porous Materials Center, Division of Physical Sciences and Engineering and ‡Electrical Engineering Program, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Osama Shekhah
- Functional Materials Design, Discovery and Development research group (FMD3), Advanced Membranes & Porous Materials Center, Division of Physical Sciences and Engineering and ‡Electrical Engineering Program, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Mohamed Eddaoudi
- Functional Materials Design, Discovery and Development research group (FMD3), Advanced Membranes & Porous Materials Center, Division of Physical Sciences and Engineering and ‡Electrical Engineering Program, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Khaled N. Salama
- Functional Materials Design, Discovery and Development research group (FMD3), Advanced Membranes & Porous Materials Center, Division of Physical Sciences and Engineering and ‡Electrical Engineering Program, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
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Capacitive Biosensors and Molecularly Imprinted Electrodes. SENSORS 2017; 17:s17020390. [PMID: 28218689 PMCID: PMC5336051 DOI: 10.3390/s17020390] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/16/2017] [Accepted: 02/08/2017] [Indexed: 01/05/2023]
Abstract
Capacitive biosensors belong to the group of affinity biosensors that operate by registering direct binding between the sensor surface and the target molecule. This type of biosensors measures the changes in dielectric properties and/or thickness of the dielectric layer at the electrolyte/electrode interface. Capacitive biosensors have so far been successfully used for detection of proteins, nucleotides, heavy metals, saccharides, small organic molecules and microbial cells. In recent years, the microcontact imprinting method has been used to create very sensitive and selective biorecognition cavities on surfaces of capacitive electrodes. This chapter summarizes the principle and different applications of capacitive biosensors with an emphasis on microcontact imprinting method with its recent capacitive biosensor applications.
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Vello TP, da Silva LM, Silva GO, de Camargo DH, Corrêa CC, Bof Bufon CC. Hybrid organic/inorganic interfaces as reversible label-free platform for direct monitoring of biochemical interactions. Biosens Bioelectron 2017; 87:209-215. [DOI: 10.1016/j.bios.2016.08.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 08/05/2016] [Accepted: 08/16/2016] [Indexed: 01/06/2023]
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Apigo DJ, Bartholomew PL, Russell T, Kanwal A, Farrow RC, Thomas GA. An Angstrom-sensitive, differential MEMS capacitor for monitoring the milliliter dynamics of fluids. SENSORS AND ACTUATORS. A, PHYSICAL 2016; 251:234-240. [PMID: 28533631 PMCID: PMC5438090 DOI: 10.1016/j.sna.2016.10.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A device, with MEMS sensors at its core, has been fabricated and tested for measuring low fluid pressure and slow flow rates. The motivation was to measure clinically relevant ranges of slow-moving fluids in living systems, such as the cerebrospinal fluid in the brain. For potential clinical utility, the device can be read transcutaneously by inductive coupling to MEMS capacitive sensors in circuits with resonance frequencies in the MHz range. Signal shifts for flow rates in the range of 0-42 mL/h and differential pressure levels between 0.1 and 2 kPa have been measured, because the sensitivity in the capacitance gap measurement is about 1 Å. The sensors have been used successfully to monitor simulated cerebrospinal fluid dynamics. The device does not utilize any internal power, since it is powered externally via the inductive coupling.
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Affiliation(s)
- David J Apigo
- New Jersey Institute of Technology, Department of Physics, Newark, NJ 07102, USA
| | - Philip L Bartholomew
- New Jersey Institute of Technology, Department of Material Science and Engineering, Newark, NJ 07201, USA
| | - Thomas Russell
- New Jersey Institute of Technology, Department of Physics, Newark, NJ 07102, USA
| | - Alokik Kanwal
- New Jersey Institute of Technology, Department of Physics, Newark, NJ 07102, USA
| | - Reginald C Farrow
- New Jersey Institute of Technology, Department of Physics, Newark, NJ 07102, USA
| | - Gordon A Thomas
- New Jersey Institute of Technology, Department of Physics, Newark, NJ 07102, USA
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Yassine O, Shekhah O, Assen AH, Belmabkhout Y, Salama KN, Eddaoudi M. H2S Sensors: Fumarate-Based fcu-MOF Thin Film Grown on a Capacitive Interdigitated Electrode. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608780] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Omar Yassine
- Sensors Lab; Electrical Engineering Program; Division of Computer, Electrical and Mathematical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Osama Shekhah
- Functional Materials Design; Discovery and Development research group (FMD ); Advanced Membranes & Porous Materials Center; Division of Physical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Ayalew H. Assen
- Functional Materials Design; Discovery and Development research group (FMD ); Advanced Membranes & Porous Materials Center; Division of Physical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Youssef Belmabkhout
- Functional Materials Design; Discovery and Development research group (FMD ); Advanced Membranes & Porous Materials Center; Division of Physical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Khaled N. Salama
- Sensors Lab; Electrical Engineering Program; Division of Computer, Electrical and Mathematical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Mohamed Eddaoudi
- Functional Materials Design; Discovery and Development research group (FMD ); Advanced Membranes & Porous Materials Center; Division of Physical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
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Yassine O, Shekhah O, Assen AH, Belmabkhout Y, Salama KN, Eddaoudi M. H2S Sensors: Fumarate-Based fcu-MOF Thin Film Grown on a Capacitive Interdigitated Electrode. Angew Chem Int Ed Engl 2016; 55:15879-15883. [DOI: 10.1002/anie.201608780] [Citation(s) in RCA: 179] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Omar Yassine
- Sensors Lab; Electrical Engineering Program; Division of Computer, Electrical and Mathematical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Osama Shekhah
- Functional Materials Design; Discovery and Development research group (FMD ); Advanced Membranes & Porous Materials Center; Division of Physical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Ayalew H. Assen
- Functional Materials Design; Discovery and Development research group (FMD ); Advanced Membranes & Porous Materials Center; Division of Physical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Youssef Belmabkhout
- Functional Materials Design; Discovery and Development research group (FMD ); Advanced Membranes & Porous Materials Center; Division of Physical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Khaled N. Salama
- Sensors Lab; Electrical Engineering Program; Division of Computer, Electrical and Mathematical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Mohamed Eddaoudi
- Functional Materials Design; Discovery and Development research group (FMD ); Advanced Membranes & Porous Materials Center; Division of Physical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
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48
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Sikarwar B, Singh VV, Sharma PK, Kumar A, Thavaselvam D, Boopathi M, Singh B, Jaiswal YK. DNA-probe-target interaction based detection of Brucella melitensis by using surface plasmon resonance. Biosens Bioelectron 2016; 87:964-969. [PMID: 27665519 DOI: 10.1016/j.bios.2016.09.063] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 09/16/2016] [Accepted: 09/17/2016] [Indexed: 12/20/2022]
Abstract
Surface plasmon resonance (SPR) immunosensor using 4-mercaptobenzoic acid (4-MBA) modified gold (4-MBA/Au) SPR chip was developed first time for the detection of Brucella melitensis (B. melitensis) based on the screening of its complementary DNA target by using two different newly designed DNA probes of IS711 gene. Herein, interaction between DNA probes and target molecule are also investigated and result revealed that the interaction is spontaneous. The kinetics and thermodynamic results derived from the experimental data showed that the interaction between complementary DNA targets and probe 1 is more effective than that of probe 2. Equilibrium dissociation constant (KD) and maximum binding capacity of analyte (Bmax) values for the interaction of complementary DNA target with the immobilized DNA probes were calculated by using kinetic evaluation software, and found to be 15.3 pM (KD) and 81.02m° (Bmax) with probe 1 and 54.9pM and 55.29m° (Bmax), respectively. Moreover, real serum samples analysis were also carried out using immobilized probe 1 and probe 2 with SPR which showed the applicability of this methodology and provides an alternative way for the detection of B. melitensis in less than 10min. This remarkable sensing response of present methodology offer a real time and label free detection of biological warfare agent and provide an opportunity to make miniaturized sensor, indicating considerable promise for diverse environmental, bio-defence, clinical diagnostics, food safety, water and security applications.
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Affiliation(s)
- Bhavna Sikarwar
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India
| | - Virendra V Singh
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India
| | - Pushpendra K Sharma
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India
| | - Ashu Kumar
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India
| | | | - Mannan Boopathi
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India.
| | - Beer Singh
- Defence Research and Development Establishment, DRDO, Jhansi Road, Gwalior 474002, India
| | - Yogesh K Jaiswal
- School of Studies in Biochemistry, Jiwaji University, Gwalior 474011, India
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49
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Affiliation(s)
- Alinaghi Salari
- Department of Chemical Engineering; University of Toronto; 200 College Street Toronto Ontario M5S 3E5 Canada
| | - Eugenia Kumacheva
- Department of Chemical Engineering; University of Toronto; 200 College Street Toronto Ontario M5S 3E5 Canada
- Department of Chemistry; University of Toronto; 80 Saint George Street Toronto Ontario M5S 3H6 Canada
- Institute of Biomaterials and Biomedical Engineering; University of Toronto; 164 College Street Toronto Ontario M5S 3G9 Canada
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50
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Capaldo P, Alfarano SR, Ianeselli L, Zilio SD, Bosco A, Parisse P, Casalis L. Circulating Disease Biomarker Detection in Complex Matrices: Real-Time, In Situ Measurements of DNA/miRNA Hybridization via Electrochemical Impedance Spectroscopy. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00262] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Pietro Capaldo
- Elettra-Sincrotrone Trieste S.C.p.A., Area
Science Park, Strada Statale 14 km 163.5, 34149 Basovizza, Trieste, Italy
| | | | - Luca Ianeselli
- Elettra-Sincrotrone Trieste S.C.p.A., Area
Science Park, Strada Statale 14 km 163.5, 34149 Basovizza, Trieste, Italy
| | - Simone Dal Zilio
- CNR-IOM, Laboratorio TASC, Area
Science Park, Strada Statale 14 km 163.5, 34149 Basovizza, Trieste, Italy
| | - Alessandro Bosco
- Elettra-Sincrotrone Trieste S.C.p.A., Area
Science Park, Strada Statale 14 km 163.5, 34149 Basovizza, Trieste, Italy
| | - Pietro Parisse
- Elettra-Sincrotrone Trieste S.C.p.A., Area
Science Park, Strada Statale 14 km 163.5, 34149 Basovizza, Trieste, Italy
- INSTM-ST Unit, Area Science Park,
Strada Statale 14 km 163.5, 34149 Basovizza, Trieste, Italy
| | - Loredana Casalis
- Elettra-Sincrotrone Trieste S.C.p.A., Area
Science Park, Strada Statale 14 km 163.5, 34149 Basovizza, Trieste, Italy
- INSTM-ST Unit, Area Science Park,
Strada Statale 14 km 163.5, 34149 Basovizza, Trieste, Italy
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