A molecule for labeling a target material is provided including two transition-metal chelates and a detectable group. As a result, the operating temperature is in the range of 65 to 75 C. The invention also describes an example instrument for formation of individual and multiple nanostructure bridges at selective location and orientation. The enhanced composite image is then printed by the use of a colored ink printing machine on material to form the window shade. The protrusion preferably extends inward in relation to the curved portion of the hook to prevent harm to the fish, and is located at or near the point where the tip points toward the shank portion to keep the bait away from the gap and substantially control the location of the bait on the hook.