21. Therefore, optical properties of MWCNTs will not be considered here. 22. PVC affects both physical and optical properties of a paint. 23. The optical properties vary with chain length . and 96-mer 24. He also measured and systematised the optical properties of metamagnets. 25. The optical properties and durability of transparent plastics limit their use in armor applications. 26. Optical properties of colloidal suspensions depend on the suspended particles size and size distribution.27. His research group studies the synthesis of nanomaterials and their electronic and optical properties . 28. Gratings with such small periodicity are called subwavelength gratings and exhibit special optical properties . 29. Polycarbonates have a high glass transition temperature but poor optical properties for fluorescent detection. 30. Kovalev and his team were studying the optical properties of porous silicon, a sponge-like material.