Bio-molecule analyzer with photosensitive material and fabrication

A method of fabricating a bio-molecule analyzer comprising the steps of:

• providing a photoconductive layer of material having a layer of electrically conductive material on a first surface thereof and a plurality of test sites on an opposing second surface thereof;
• providing a first solution containing a plurality of first probe molecules in electrical contact with the test site;
• connecting an electrical potential between the first solution and the layer of electrically conductive material;
• directing a first beam of light through a first portion of the photoconductive layer of material to complete an electrical circuit between the layer of electrically conductive material and the first solution through the first portion of the photoconductive layer and the first test site of the plurality of test sites, whereby first probe molecules in the first solution are attracted to and bound to the first test site, which is coupled into the electrical circuit by the first beam of light;
• removing the first solution;
• providing a second solution containing a plurality of second probe molecules in electrical contact with the plurality of test sites;
• connecting an electrical potential between the second solution and the layer of electrically conductive material;
• and
• directing a second beam of light through a second portion of the photoconductive layer of material to complete an electrical circuit between the layer of electrically conductive material and the second solution through the second portion of the photoconductive layer and a second test site of the plurality of test sites, the steps of directing the first beam of light and the second beam of light including providing an array of light sources, whereby second probe molecules in the second solution are attracted to and bound to the second test site, which is coupled into the electrical circuit by the second beam of light.