Negative thermal expansion of nanoporous anodic aluminum oxide membranes
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Fecha
2019-03
Autores
Forzani, L.
Ramos, C. A.
Vasallo-Brigneti, Ettore C.
Gennaro, A.M.
Koropecki, R.R.
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American Institute of Physics
Resumen
Descripción
We have measured the thermal expansion of Ni nanowires (NWs) electrodeposited into self-organized nanoporous amorphous aluminum
oxide (AAO) membranes without an Al substrate using X-ray diffraction between 110K and 350 K. Assuming a bulk-like thermal expansion of the isolated Ni NWs, this result indicates that AAO also has a negative thermal expansion. We estimate the thermal expansion of nanoporous AAO . We show that data obtained previously on the thermal expansion of metallic NWs grown in the nanoporous
AAO may be interpreted as originating from a negative thermal expansion of the matrix.
Palabras clave
Negative Thermal Expansion, Nanoporous Alumina
Citación
L. Forzani, C.A. Ramos, E.C. Vasallo-Brigneti, A.M. Gennaro, R.R. Koropecki (2019).Negative thermal expansion of nanoporous anodic aluminum oxide membranes. In Appl. Phys. Lett. 114, 111901. https://doi.org/10.1063/1.5074083