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US 8,709,306 B2Granted
Thermochromic microparticles, dispersions thereof, and manufacturing method thereof, as well as light-modulating coatings, light-modulating films and light-modulating inks
AssigneeNational Institute of Advanced Industrial Science and Technology
InventorsPing Jin, Shidong Ji, Masato Tazawa
Life of this patent
Estimating the term…
Abstract
Thermochromic microparticles including vanadium dioxide (VO2) particles of a rutile crystal phase (R phase), and titanium dioxide (TiO2) particles of the rutile crystal phase (R phase), wherein at least one of the vanadium dioxide (VO2) particles of a rutile crystal phase (R phase) is grown like a rod on the titanium dioxide (TiO2) particles to be larger than sizes of the titanium dioxide (TiO2) particles.
Claims9
Thermochromic microparticles comprising:
- vanadium dioxide (VO2) particles of a rutile crystal phase (R phase), and
- titanium dioxide (TiO2) particles of the rutile crystal phase (R phase) being a seed crystal for growth of the vanadium dioxide (VO2),
- wherein at least one of the vanadium dioxide (VO2) particles of the rutile crystal phase (R phase) is grown as a rod-like particle on the titanium dioxide (TiO2) particles, and the vanadium dioxide (VO2) particles grown as the rod-like particle are about 1.5 to 5 times longer than the titanium dioxide (TiO2) particles of the rutile crystal phase along growth axes of the vanadium dioxide (VO2) particles.
Dependencies are inferred from the claim text.