  Silicon-based photonic biosensors, such as microring resonators and
Mach-Zehnder interferometers, offer significant potential for the detection of
analytes at low concentrations. To enhance response time and improve the limit
of detection within practical time scales, dielectrophoresis (DEP) has been
proposed as a viable solution. In this approach, two electrodes are placed in
close proximity to the sensor surface. By applying an AC field, analytes are
transported to the sensor surface due to the polarization of the solvent and
the particles, effectively overcoming the diffusion barrier. In this
communication, we explore various possibilities for realizing DEP electrodes
for nanowire waveguides using commercially available photonic integrated
circuit (PIC) technology. Finite Element Method (FEM) simulations suggest that
the most beneficial electrode configuration is a planar electrode geometry on
the device layer combined with a second electrode pair on the metal 1 layer.
