This study investigates the acoustic performance of a system two Helmholtz resonators experimentally and numerically. The distance between was varied to assess its effect on quantitatively. Experiments were performed using an impedance tube with instrumented several microphones along tube. relation noise attenuation is presented in terms transmission loss, coefficient, change sound pressure lev...

Analytical platforms based on impedance spectroscopy are promising for non-invasive and label-free analysis of single cells as well their extracellular matrix, being essential to understand cell function in the presence certain diseases. Here, an innovative rolled-up impedimetric microfulidic sensor, called sensor-in-a-tube, is introduced simultaneous human monocytes CD14+ medium upon liposacch...

Two types of TiO 2 nano-tubular arrays were obtained by anodization of a titanium foil, in two different solutions containing fluoride ions. For the first type which has rough tube walls, impedance measurements in the dark showed the presence of a localised surface state which was related to adsorbed molecular water. Under UV illumination this adsorbed molecular water was photo-dissociated. Mor...

To describe the mechanical characteristics of the respiratory system in intubated neonates with respiratory disease, we measured impedance and resistance in six paralyzed intubated infants with respiratory distress syndrome, three of whom also had pulmonary interstitial emphysema. We subtracted the effects of the endotracheal tube after showing that such subtraction was valid. Oscillatory flow ...