Use of nanohybrid materials as electrochemical transducers for mercury sensors

2012 ◽  
Vol 165 (1) ◽  
pp. 143-150 ◽  
Author(s):  
Daniel Martín-Yerga ◽  
María Begoña González-García ◽  
Agustín Costa-García
Keyword(s):  
Mercury Sensors ◽  
Nanohybrid Materials ◽  
Electrochemical Transducers

ТЕХНОЛОГИЯ И ПРИМЕНЕНИЕ ЭЛЕКТРОХИМИЧЕСКИХ ПРЕОБРАЗОВАТЕЛЕЙ

2020 ◽  
Vol 96 (3s) ◽  
pp. 450-455
Author(s):  
В.Г. Криштоп ◽  
Д.А. Жевненко ◽  
П.В. Дудкин ◽  
Е.С. Горнев ◽  
В.Г. Попов ◽  
...  
Keyword(s):  
Pressure Sensors ◽  
Engineering Applications ◽  
Electrochemical Systems ◽  
Seismic Sensors ◽  
Microelectronic Technology ◽  
Wide Range ◽  
Electrochemical Transducers ◽  
Element Base ◽  
New Devices

Электрохимические системы очень перспективны для разработки новой элементной базы для микроэлектроники и для использования в широком спектре инженерных задач. Мы разработали новую микроэлектронную технологию для изготовления электрохимических преобразователей (ЭХП) и новые приборы на основе новых электрохимических микроэлектронных чипов. Планарные электрохимические преобразователи могут использоваться в акселерометрах, сейсмических датчиках, датчиках вращения, гидрофонах и датчиках давления. Electrochemical systems are very promising for the development of a new element base for microelectronics, and for use in a wide range of engineering applications. We have developed a new microelectronic technology for manufacturing electrochemical transducers (ECP) and new devices based on new electrochemical microelectronic chips. Planar electrochemical transducers are used in accelerometers, seismic sensors, rotation sensors, hydrophones and pressure sensors.

ОПТИМИЗАЦИЯ ПАРАМЕТРОВ ПЛАНАРНЫХ ЭЛЕКТРОХИМИЧЕСКИХ ПРЕОБРАЗОВАТЕЛЕЙ

2020 ◽  
Vol 96 (3s) ◽  
pp. 416-419
Author(s):  
Д.А. Жевненко ◽  
Е.С. Горнев ◽  
Т.В. Криштоп ◽  
В.Г. Криштоп
Keyword(s):  
Transport Processes ◽  
Geometric Parameters ◽  
Output Characteristics ◽  
Electrochemical Transducers

Исследовано влияние основных геометрических параметров планарных электрохимических преобразователей на выходные характеристики. Смоделированы процессы переноса в электрохимическом преобразователе при различных геометрических параметрах преобразователя и изучена зависимость стационарного тока в системе от ее параметров. The paper studies the influence of the basic geometric parameters on the output characteristics of planar electrochemical transducers. Transport processes in electrochemical transducers with various geometric parameters and the dependence of the stationary current on them have been simulated.

scholarly journals The Role of Peptides in the Design of Electrochemical Biosensors for Clinical Diagnostics

Biosensors ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 246
Author(s):  
Patrick Severin Sfragano ◽  
Giulia Moro ◽  
Federico Polo ◽  
Ilaria Palchetti
Keyword(s):  
Functional Groups ◽  
Synthetic Peptides ◽  
Clinical Diagnostics ◽  
Electrochemical Biosensors ◽  
Practical Application ◽  
Design And Development ◽  
Electrode Surfaces ◽  
Electrochemical Transducers ◽  
Target Analyte

Peptides represent a promising class of biorecognition elements that can be coupled to electrochemical transducers. The benefits lie mainly in their stability and selectivity toward a target analyte. Furthermore, they can be synthesized rather easily and modified with specific functional groups, thus making them suitable for the development of novel architectures for biosensing platforms, as well as alternative labelling tools. Peptides have also been proposed as antibiofouling agents. Indeed, biofouling caused by the accumulation of biomolecules on electrode surfaces is one of the major issues and challenges to be addressed in the practical application of electrochemical biosensors. In this review, we summarise trends from the last three years in the design and development of electrochemical biosensors using synthetic peptides. The different roles of peptides in the design of electrochemical biosensors are described. The main procedures of selection and synthesis are discussed. Selected applications in clinical diagnostics are also described.

scholarly journals Electrochemical Response of Glucose Oxidase Adsorbed on Laser-Induced Graphene

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1893
Author(s):  
Sónia O. Pereira ◽  
Nuno F. Santos ◽  
Alexandre F. Carvalho ◽  
António J. S. Fernandes ◽  
Florinda M. Costa
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Ph Dependence ◽  
High Surface ◽  
High Surface Area ◽  
Cost Effective ◽  
Great Promise ◽  
Glucose Detection ◽  
Half Wave ◽  
Electrochemical Transducers

Carbon-based electrodes have demonstrated great promise as electrochemical transducers in the development of biosensors. More recently, laser-induced graphene (LIG), a graphene derivative, appears as a great candidate due to its superior electron transfer characteristics, high surface area and simplicity in its synthesis. The continuous interest in the development of cost-effective, more stable and reliable biosensors for glucose detection make them the most studied and explored within the academic and industry community. In this work, the electrochemistry of glucose oxidase (GOx) adsorbed on LIG electrodes is studied in detail. In addition to the well-known electroactivity of free flavin adenine dinucleotide (FAD), the cofactor of GOx, at the expected half-wave potential of −0.490 V vs. Ag/AgCl (1 M KCl), a new well-defined redox pair at 0.155 V is observed and shown to be related to LIG/GOx interaction. A systematic study was undertaken in order to understand the origin of this activity, including scan rate and pH dependence, along with glucose detection tests. Two protons and two electrons are involved in this reaction, which is shown to be sensitive to the concentration of glucose, restraining its origin to the electron transfer from FAD in the active site of GOx to the electrode via direct or mediated by quinone derivatives acting as mediators.

scholarly journals Integrating high-performing electrochemical transducers in lateral flow assay

2021 ◽  
Author(s):  
Antonia Perju ◽  
Nongnoot Wongkaew
Keyword(s):  
High Performance ◽  
Point Of Care ◽  
Low Cost ◽  
High Sensitivity ◽  
Lateral Flow ◽  
Analytical Performance ◽  
Label Free ◽  
High Performing ◽  
Lateral Flow Assays ◽  
Electrochemical Transducers

AbstractLateral flow assays (LFAs) are the best-performing and best-known point-of-care tests worldwide. Over the last decade, they have experienced an increasing interest by researchers towards improving their analytical performance while maintaining their robust assay platform. Commercially, visual and optical detection strategies dominate, but it is especially the research on integrating electrochemical (EC) approaches that may have a chance to significantly improve an LFA’s performance that is needed in order to detect analytes reliably at lower concentrations than currently possible. In fact, EC-LFAs offer advantages in terms of quantitative determination, low-cost, high sensitivity, and even simple, label-free strategies. Here, the various configurations of EC-LFAs published are summarized and critically evaluated. In short, most of them rely on applying conventional transducers, e.g., screen-printed electrode, to ensure reliability of the assay, and additional advances are afforded by the beneficial features of nanomaterials. It is predicted that these will be further implemented in EC-LFAs as high-performance transducers. Considering the low cost of point-of-care devices, it becomes even more important to also identify strategies that efficiently integrate nanomaterials into EC-LFAs in a high-throughput manner while maintaining their favorable analytical performance.

Nanohybrid materials from interlayer functionalization of kaolinite. Application to the electrochemical preconcentration of cyanide

2008 ◽  
Vol 42 (1-2) ◽  
pp. 95-101 ◽  
Author(s):  
Sadok Letaief ◽  
Ignas K. Tonle ◽  
Thomas Diaco ◽  
Christian Detellier
Keyword(s):  
Nanohybrid Materials

Oligomeric Alkoxysilanes with Cagelike Hybrids as Cores: Designed Precursors of Nanohybrid Materials

2008 ◽  
Vol 3 (3) ◽  
pp. 600-606 ◽  
Author(s):  
Hideki Kuge ◽  
Yoshiaki Hagiwara ◽  
Atsushi Shimojima ◽  
Kazuyuki Kuroda
Keyword(s):  
Nanohybrid Materials

High-performance antifungal nanohybrid materials composed of melanin-clays

2021 ◽  
Vol 211 ◽  
pp. 106201
Author(s):  
Mónica Cruz-Hernández ◽  
Franchescoli D. Velázquez-Herrera ◽  
Nemesio Villa-Ruano ◽  
Marcelo Giovanela ◽  
Janaina da Silva Crespo ◽  
...  
Keyword(s):  
High Performance ◽  
Nanohybrid Materials
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