TiO2nanotube arrays (NTAs) have met increasing interest in the scientific community due to their extraordinary properties, including responsivity to UV light and biocompatibility. These properties have motivated their application in many fields, ranging from energy to environmental remediation and regenerative medicine. This chapter briefly reports on their most recent biomedical applications by citing significant examples of works that exploit TiO2 NTAs, alone or in association with other nanomaterials, for remote control through many physical sources. In particular, the focus is on TiO2 NTAs as active devices for interaction with biological environments in tissue engineering, drug delivery, and biosensing.
