Ancient sources indicate that the use of eye cosmetics to prevent "evil eye" or loss of vision was associated with antimony-containing substances, but a more recent (400 AD) writer advised powdered lead sulfide
applications for preserving vision.
The dots, from 2 to 10 nanometers (nm) across, are typically made of cadmium selenide or lead sulfide
Lead acetate is a water-soluble compound, but lead sulfide
is practically insoluble.
It's lead sulfide
(PbS) and lead selenide (PbSe) detectors offer the most cost effective choice for standard solutions, while the companies SensIR line of multiplexed linear and two dimensional arrays produce unprecedented array based spectroscopy, remote sensing and IR imaging in the 1-5 micrometer infrared band.
They also unveiled the first evidence for multiple excitons from another type of quantum dot, made of lead sulfide
SensArray Infrared is one of only a few companies that have mastered the lead sulfide
and lead selenide infrared imaging technology that is likely to emerge as the material of choice in low cost, high-resolution infrared imaging.