Fatemeh Sadat Arzanforoosh

  Abstract

  Robot design and implementation for better human life has been under development for years; in recent years a new interest is developing for small size robots, and as a result some attention has been paid to the benefit of controlling small size insects for specific purposes. Bio-robotic is a new developing field to explore and employ new concepts in this area. First researchers started with stimulating small insects like cockroaches for their special capabilities; it was first begun with direct stimulation with special electrodes to investigate the response from insect. Direct stimulation has led to designing a chip controller which is attached to back part of the cockroach body. This method has its own drawbacks like the heavy weight of the chips for some kinds of insects, falling off the back of the cockroach and short battery life. Therefore, Indirect control and stimulation became of interest soon. A unique stimulation method which has been under research for some times is electromagnetic wave stimuli. Static electric fields, static magnetic field and radio frequency waves are among the stimuli waves. Here we used electromagnetic waves in the range of 100 to 500 MHz. Experiments conducted here showed that the cockroach is responding to the stimuli by avoiding the electromagnetic field. Increasing the frequency causes more abrupt avoidance by the insect, which may be the result of wave's impact on antennas dielectric constant .

  Keywords : Periplaneta cockroaches, electromagnetic waves, antennas equivalent circuits and dielectric constant.

  Date: 31/6/89 Time: 11

  Place: School of Electrical Eng. Seminar Room