Electrical detection and characterization of bacterial adhesion using electrochemical impedance spectroscopy-based flow chamber

The application of impedance measurement to assess biofilm development on technical materials used for water supply system construction

“…Hadar Ben-Yoav, while measuring the impedance value in the range of 400 kHz to 100 mH, demonstrated that the results depend on the growth phase of biofilm formed by E. coli [16]. Similar observations were achieved by [17] in study which involved measurements of impedance before and after the adhesion of cells of bacteria Pseudomonas stutzeri on indium-tin-oxide (ITO) plate, for variable range of frequencies [17]. In both cases, a culture of a single strain has been used for study, and the duration of the experiment was a few days.…”

“…In both cases, a culture of a single strain has been used for study, and the duration of the experiment was a few days. Hadar Ben-Yoav have demonstrated that better effects are obtained for lower frequencies, hence the obtained results differ from those obtained by [17].…”

Distinctive colonization of Bacillus sp. bacteria and the influence of the bacterial biofilm on electrochemical behaviors of aluminum coatings

“…The electrochemical impedance value increases as incubation time of the coating samples in the solution is prolonged, predominantly due to the formation of passive layer on the coating surfaces. Bacterial adhesion to a surface is a complicated process, which is affected by various physicochemical properties of both bacterial cells and substratum surfaces [45]. SEM characterization already disclosed that the bacterial adhesion occurred near the flaws on the surfaces of the coatings (Fig.…”

Screen-printed integrated microsystem for the electrochemical detection of pathogens

“…The presence of different pathogen loads has been detected by impedimetric or piezo-electric methods [9], recording just the changes induced on the surface or in the media near the sensor by the presence of bacteria. With these methods cells could be detected at concentrations between 10 2 and 10 8 CFU/mL; the expense of the sensor and equipment limit the use outside the laboratory and reduce its potential for portable, low-cost applications.…”