PICO LITER WELL HOLDING DEVICE AND METHOD OF MAKING THE SAME

The present invention broadly comprises a holding device for studying cells comprising at least one cavity adapted to receive cells in a medium consisting essentially of water, the cavity having a substrate and a generally inert wall, wherein the substrate includes a surface for receiving the medium, and wherein the surface includes a multiplicity of pico liter wells and is characterized in that the substrate is substantially translucent and has a refractive index equal to the refractive index of the medium The invention further comprises a method of making the holding device comprising providing a carrier plate, applying an adhesive layer to the carrier plate, depositing a curable substrate on the adhesive layer, applying a second layer of adhesive to the substrate, attaching a wall structure to the second layer of adhesive, forming a multiplicity of pico liter wells in the substrate, curing the substrate, and removing the template.