PN II / PROGRAMME 4 - "PartnerSHIPS IN PRIORITY DOMAINS"
Thematic Area: 1 - Information Technology and Communications
ACOUSTIC MICROSENSORS BASED ON MAGNETOSTRICTIVE NANOWIRES FOR MEDICAL APPLICATIONS
Contract No.: 12114 / 2008
Project Code: 3238
Project duration: 36 month
Start date: 1/10/2008
End date: 1/10/2011
Financial assistance from the budget: 2,000,000.00 RON
Coordinator: CS II, Dr. Nicoleta LUPU (firstname.lastname@example.org)
National Institute of Research and Development for Technical Physics, Iaşi (INCDFT)
O.R.L. Clinic, Spitalul Clinic de Recuperare Iaşi (SREC)
„Alexandru Ioan Cuza” University Iaşi, Faculty of Physics (UAIC)
„Gheorghe Asachi” Technical University Iaşi, Facultaty of Electrotehnics (UTI)
1.7 – Nanoelectronics, photonics and integrated micronanosystems
1.7.6. – Microfluids technologies, micro/nano-biosensors, lab on a chip, microarrays, micro- and nanostructure and micro- and nanosystems for diagnosis and medical treatment (including nanomedicine)
1.7.7 – Microsensors and actuators (including 3D)
1.7.9. – Convergent technologies: micro-nano-bio-info.
The project addresses a complex, multidisciplinary subject situated at the interface between physics, materials science, electrochemistry, electrotechnics, electronics and medicine with the aim of achieving acoustic microsensors based on magnetostrictive nanowires to be used in cochlear implants. The magnetostrictive wires represent the active element of the microsensor which is activated by the acoustic signals. Certain frequencies of the acoustic signal determines the resonance of the nanowires which, at its turn, determines the generation of a localized magnetic field which is subsequently transformed/transduced into an electrical signal by some magnetostrictive sensors. The electrical signal generated by the acoustic microsensors depends on the length, diameter, density per area unit and nanowires composition. A single microsensor or an array of microsensors can be used to reproduce as much as possible the cilia from the inner ear. Another aim of the project proposal is to perform biocompatibility tests and to monitor the function of the nanowires template on the electrical response of the microsensor. Another important objective is an application related one, i.e. to perform tests on the behaviour of the acoustic microsensors in actual implants on animals used for experimental purposes. The manner in which the microsensors can perform the hearing functions and the behaviour of the implant in the magnetic fields employed in the exploratory medicine (e.g. MRI) will be investigated.