Interdigitated array electrode

Bratov, A., J. Ramon, N. Abramova, et al. 2008. Three-dimensional interdigitated electrode array as a transducer for label-free biosensors. Biosens. Bioelectron. 24 729-735. 

For the values given, m i = 5.7 X 10 kgM = 5.7 X 10" g/cm (570 pg/cm ). If one wishes to reduce this value, one can reduce the membrane thickness, and hence, M. With the device of Figure 3.41, a lower limit on thickness of the composite membrane is set by the minimum thickness of the piezoelectric layer, as extremely thin ZnO layers tend to be randomly oriented and hence have low piezoelectric coupling. Much thinner membranes can be achieved if one dispenses with the piezoelectric and instead drives a very thin membrane with electrostatic forces produced by an opposing interdigital electrode array [62,69]. 

Figure 4. Diagram showing an interdigitated electrode array used to induce travelling wave dielectrophoresis. The cells move over the electrodes along the channel in the direction opposite to that of the travelling field. Cells on the left-hand (right-hand) side of the channel rotate in a clockwise (anti-clockwise) sense while moving.

Figure 7. Diagram showing an experimental system used for DEP or twDEP. The interdigitated electrode array is fabricated on a glass substrate and energized with different AC signals. For DEP, the electrodes are connected to voltages with 180° phase shifts. For twDEP, the electrodes are connected to a frequency generator with 90° phase shift, w is the electrode width, g is the electrode gap and h is the height of the channel.

Figure 8. DEP force vectors and magnitude for an interdigitated electrode array. The electrodes are drawn in the figure, (a) The DEP force (direction and magnitude) for DEP. (b) The DEP force (direction and magnitude) in a twDEP array, (c) The twDEP force (direction and magnitude) in a twDEP array, (d) ROT component (magnitude) for twDEP (Sun etal. [63]).

H. Morgan, A. G. Izquierdo, D. Bakewell, N. G. Green and A. Ramos, The dielectrophoretic and travelling wave forces generated by interdigitated electrode arrays analytical solution using Fourier series, J. Phys. D Appl. Phys., 34, 1553-1561 (2001). 

D. E. Chuang, S. Loire and I. Mezic, Closed-form solutions in the electric field analysis for dielectrophoretic and travelhng wave interdigitated electrode arrays, J. Phys. D Appl. Phys., 36, 3073-3078 (2003). 

N. G. Green, A. Ramos and H. Morgan, Numerical solution of the dielectrophoretic and travelhng wave forces for interdigitated electrode arrays using the finite element method, J. Electrostat., 56, 235-254 (2002). 

T. Sun, H. Morgan and N. G. Green, Analytical solutions of ac electrokinetics in interdigitated electrode arrays electric field, dielectrophoretic and travelling-wave dielectrophoretic forces, Phys. Rev. E., 76, 046610 (2007). 

Glucose oxidase cross-linked with poly(ethylene glycol) diglycidyl ether into an osmium polyvinylpyri-dine polymeric base on interdigitated electrode arrays Glucose [37]... 

K. Baert, J. Suls, W. Sansen, P. Jacobs, L. Hermans, and R. Mertens. Nano-scaled interdigitated electrode arrays for biochemical sensors. Sens. Actuators, B, 49(l-2) 73-80, June 1998. 

In a first step we determined the impedimetric behavior of NETs. With some constrains, neutrophils in cell medium model a wound environment. We used commercial interdigitated electrode arrays (Roche xCelligence) equipped with wells for cell culture. This disposable device is meant to have no chemical interaction between the gold electrodes and the standard cultivation medium during impedance measurements. The electrodes were connected via a self-made adapter to an impedance analyzer (ScioSpec IX-3). The experiments were carried out with the standard settings of the device at 12.5 mV amplitude at frequencies from 100 Hz to 1 MHz. First, we measured cell cultures, where we focused on the reaction of the... 

Dielectrophoresis, Fig. 6 (a) Schematic diagram of the interdigitated electrode array in a microfluidic system, (b) Plot of the direction of the dielectrophoretic force for the... 

FIGURE 3 Schematic illustration of the microfabricated, interdigitated electrode array. 

TABLE 1 Summary of Key Parameters and Properties of Microfabricated Interdigitated Electrode Arrays... 

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