Fabrication of AlN-Based Flexible Piezoelectric Pressure Sensor to Integrate into an Artificial Pancreas

Proceedings

Rescio, Gabriele¹  Signore, Maria Assunta²  Taurino, Antonietta³  Pascali, Chiara De⁴ 

[1] Author to whom correspondence should be addressed.;CNR, Institute for Microelectronics and Microsystems, Via Monteroni, 73100 Lecce, Italy;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018;The BioRobotics Institute, Scuola Superiore Sant’Anna, Viale R. Piaggio 34, 56025 Pontedera, Italy

关键词: piezoelectric pressure sensor;    AlN thin films;    implantable artificial pancreas;   

DOI  :  10.3390/proceedings2131037

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Present work reports the fabrication and characterization of a flexible AlN-based piezoelectric pressure sensor integrated, as insulin capsule punching detector, into an implantable artificial pancreas (AP), developed as automated treatment device for Type 1 diabetes. Ti/AlN/Ti trilayer was sputtered on a thin kapton substrate at room temperature, making the final device flexible and sensitive to the forces range of interest (0–4 N). The proposed preliminary prototype of AP comprises a refilling module, interfaced with the intestine wall, able to dock an ingestible insulin capsule. A linearly actuated needle punches the capsule to transfer the insulin to an implanted reservoir. The pressure sensor is located at the connection of the needle with the linear actuator to sense the occurred capsule punching. The sensor waveform output was processed to clearly identify the capsule punching.

【 授权许可】

CC BY