Scattered arrays of plasmonic nanoparticles have been shown to manifest a strong absorption of near-infrared light, and applied recently to solar control filters for automotive and architectural windows.
New near-infrared shielding materials, LaB6 (lanthanum hexaboride) and CWO®︎ (cesium tungsten oxide) with selective and strong near-infrared absorption in the range of 800 to 1200 nm have been developed originally by SMM. These materials diminish near-infrared rays of shorter wavelength which has much of the heat energy in sunlight compared to ITO (tin-doped indium oxide) and ATO (antimony-doped tin oxide).
* CWO®︎ is a registered trademark of SMM.
Near-infrared shielding materials and components containing LaB6 or CWO®︎ are SMM patented products.
Patents have been registered or applied for in Japan, USA, EU, China, Korea, Taiwan, Brazil and Australia.
In order to decrease scattered lights, SMM LaB6 and CWO®︎ particles are pulverized to nano size with polymer dispersion agents added to each type of resin to suppress agglomeration of particles for a uniform dispersion.
|Product name||Application example||Optical
|Liquid dispersion||CWO®︎||YMF-02A||Automotive and building windows solar control films
Infrared-ray blockage for electronic devices
|Powder dispersion||CWO®︎||YMDS-874||Solar control plastic sheet||Detail|