SPIE Proceedings [SPIE International Conference on Lasers, Applications, and Technologies '07 - Minsk, Belarus (Monday 28 May 2007)] International Conference on Lasers, Applications, and Technologies 2007: Environmental Monitoring and Ecological Applications; Optical Sensors in Biological, Chemical, and Engineering Technologies; an - ThT as an instrument for testing and investigation of amyloid and amyloid-like fibrils