INFRARED OPTICAL THINGS TO KNOW BEFORE YOU BUY

 5a]. The absorption edge for samples VT400 and VT700 transpired at ~ 503 nm and ~ 470 nm. Conversely, the transmittance reduced slightly with rising substrate temperature inside the NIR spectra vary, which may be attributed to the massive particle dimension and lack of porosity for VT700. Figure 5b displays the reflectance spectra for