نتایج جستجو برای: electrochemical noise

تعداد نتایج: 245676  

2007
L. V. Taveira A. A. Sagüés

The feasibility and sensitivity of electrochemical noise (EN), electrochemical impedance spectroscopy (EIS), and linear polarization resistance (LPR) for detection of corrosion in post-tensioning (PT) components was investigated. The use of the electrical resistance (ER) technique, as well EIS and LPR, to detect air space corrosion at the grout voids was also explored. The results showed that h...

2015
Hadar Ben-Yoav Sheryl E. Chocron Thomas E. Winkler Eunkyoung Kim Deanna L. Kelly Gregory F. Payne Reza Ghodssi

Clozapine is the most effective antipsychotic medication for schizophrenia, but it is underutilized because of the inability to effectively monitor its treatment efficacy and side effects. In this work, we demonstrate the first analytical micro-system for real-time monitoring of clozapine serum levels. An electrochemical lab-on-a-chip is developed and integrated with a catechol-chitosan redox c...

2008
H. P. Tsui

Electrochemical buffing technology (ECB) applies electrochemical and mechanical finishing characteristics in the surface finishing process. ECB can buff ultrahigh purity components to make them shine, without leaving residual stress, micro-cracks, and etc. The control parameters of the ECB process include current density, the rate of revolution of the buffing head, the buffing pressure on the s...

2016
Philip A. Ash Holly A. Reeve Jonathan Quinson Ricardo Hidalgo Tianze Zhu Ian J. McPherson Min-Wen Chung Adam J. Healy Simantini Nayak Thomas H. Lonsdale Katia Wehbe Chris S. Kelley Mark D. Frogley Gianfelice Cinque Kylie A. Vincent

We describe a method for addressing redox enzymes adsorbed on a carbon electrode using synchrotron infrared microspectroscopy combined with protein film electrochemistry. Redox enzymes have high turnover frequencies, typically 10-1000 s(-1), and therefore, fast experimental triggers are needed in order to study subturnover kinetics and identify the involvement of transient species important to ...

Journal: :Accounts of chemical research 2016
Todd J Anderson Bo Zhang

Metal nanoparticles are key electrode materials in a variety of electrochemical applications including basic electron-transfer study, electrochemical sensing, and electrochemical surface enhanced Raman spectroscopy (SERS). Metal nanoparticles have also been extensively applied to electrocatalytic processes in recent years due to their high catalytic activity and large surface areas. Because the...

Journal: :International microbiology : the official journal of the Spanish Society for Microbiology 2005
Héctor A Videla Liz K Herrera

This review discusses the state-of-the-art of research into biocorrosion and the biofouling of metals and alloys of industrial usage. The key concepts needed to understand the main effects of microorganisms on metal decay, and current trends in monitoring and control strategies to mitigate the deleterious effects of biocorrosion and biofouling are also described. Several relevant cases of bioco...

2011
Sanoe Chairam Worawit Sriraksa Maliwan Amatatongchai Ekasith Somsook

A poly(aniline-co-m-ferrocenylaniline) was successfully synthesized on a glassy carbon electrode (GCE) by electrochemical copolymerization using a scan potential range from -0.3 to +0.9 V (vs. Ag/AgCl) in 0.5 M H2SO4 containing 30% acetonitrile (ACN), 0.1 M aniline (Ani) and 0.005 M m-ferrocenyaniline (m-FcAni). The field emission scanning electron microscope (FESEM) and electrochemical methods...

2014
S. R. Rao G. Padmanabhan

Aluminium metal matrix composites (AMMCs) are now gaining their usage in aerospace and automotive industries because of their inherent properties like high strength to weight ratio, low wear rate etc. Electrochemical Machining (ECM) allowed success in the production of newer materials, especially for the aerospace and biomedical applications. In this paper an attempt is made to machine the LM6 ...

Journal: :Biosensors & bioelectronics 2017
A Hauke L S Selva Kumar M Y Kim J Pegan M Khine H Li K W Plaxco J Heikenfeld

Electrochemical sensing is moving to the forefront of point-of-care and wearable molecular sensing technologies due to the ability to miniaturize the required equipment, a critical advantage over optical methods in this field. Electrochemical sensors that employ roughness to increase their microscopic surface area offer a strategy to combatting the loss in signal associated with the loss of mac...

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