The present invention relates, in general terms, to X-ray detecting films and uses thereof. The present invention also relates to methods of fabricating the X-ray detecting films. In particular, the X-ray detecting film comprises persistent luminescent nanoparticles dispersed within a flexible polymer matrix, wherein the persistent luminescent nanoparticles are dispersed in the flexible polymer matrix at a concentration of about 0.1% to about 100%.

The present invention relates, in general terms, to X-ray detecting films and uses thereof. The present invention also relates to methods of fabricating the X-ray detecting films. In particular, the X-ray detecting film comprises persistent luminescent nanoparticles dispersed within a flexible polymer matrix, wherein the persistent luminescent nanoparticles are dispersed in the flexible polymer matrix at a concentration of about 0.1% to about 100%.

A photoactive solution system for at least one of photochromic liquids and photoconductive liquids, involving a protonating solvent, comprising at least one of a first solvent and a second solvent, and an anthracene-derivative solute configured to dissolve in the protonating solvent, whereby a photoactive solution is responsive to light having a wavelength in at least one of a visible spectrum, a near-ultraviolet spectrum, and an ultraviolet spectrum, and whereby a photoactive response is elicitable.

A system to fabricate hierarchical graded materials includes a reservoir to contain a material to be deposited, a print head connected to the reservoir to allow the print head to receive the material to be deposited, the print head having a mixing section, and an actuator connected to the print head, the actuator configured to actuate the print head in six axes of motion.