Numerical simulation for sensitivity and accuracy enhancement of micro cantilever-based biosensor employing truss structure

Elmi, Soheila; Elmi, Zahra; Bahrami, Manouchehr

doi:10.1007/s00542-018-4092-y

Numerical simulation for sensitivity and accuracy enhancement of micro cantilever-based biosensor employing truss structure

MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS, cilt.25, sa.6, ss.2205-2214, 2019 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 25 Sayı: 6
Basım Tarihi: 2019
Doi Numarası: 10.1007/s00542-018-4092-y
Dergi Adı: MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.2205-2214
Hacettepe Üniversitesi Adresli: Evet

Özet

Micro-cantilevers are very effective and reliable devices for bio-sensing applications. In this work, a novel biosensor based on micro-cantilever array was designed, simulated and optimized for different bio-sensing applications with high sensitivity, high accuracy, high throughput, and high Q factor. A truss structure designed in the anchored end of the micro-cantilever which was effective in improving the sensitivity to increase detection accuracy. Also, the effects of the surrounding medium are minimized by this structure to achieve high Q factor and longer vibration for bio-sensor. All the results are compared by the conventional micro-cantilever. As a result, the Q factor is increased from 52.1 to 126.1 within water medium and from 51.8 to 120 within ethanol medium. The actuation of novel MCL is simulated by different piezoelectric materials, the results proof that the amplitude of displacement for the PZT-5H is more efficient than AlN.