@misc{martins_development_of_2009, 
author={Martins, R.M.S., Schell, N., Gordo, P.R., Maneira, M.J.P., Silva, R.J.C., Braz Fernandes, F.M.},
title={Development of sputtered Shape Memory Alloy (SMA) Ni–Ti films for actuation in ice cooled environments},
year={2009},
howpublished = {journal article},
doi = {https://doi.org/10.1016/j.vacuum.2009.03.027},
abstract = {After the characterization described above, the film was removed from the substrate. The free-standing film showed a pronounced “two-way” shape memory effect (SME). In the austenitic state the film presents a flat shape. During cooling, by reducing its distance from ice cubes (i.e., decreasing the surrounding temperature), the film starts bending exhibiting a final curled shape (yet without touching the ice). On heating it recovers its flat shape. The authors attribute the nature of this “two-way” SME to the Ni4Ti3 precipitates that formed during the heat treatment.},
note = {Online available at: \url{https://doi.org/10.1016/j.vacuum.2009.03.027} (DOI). Martins, R.; Schell, N.; Gordo, P.; Maneira, M.; Silva, R.; Braz Fernandes, F.: Development of sputtered Shape Memory Alloy (SMA) Ni–Ti films for actuation in ice cooled environments. Vacuum. 2009. vol. 83, no. 10, 1299-1302. DOI: 10.1016/j.vacuum.2009.03.027}}