TY - GEN AU - Cakmak,M AU - Hassan,M AU - Unsal,E AU - Martins,C TI - A fast real time measurement system to track in and out of plane optical retardation/ birefringence, true stress, and true strain during biaxial stretching of polymer films SN - 1089-7623 PY - 2013///0930 N1 - Publication Type: Journal Article UR - https://doi.org/10.1063/1.4768531 ER -