Lifetime assessment of atomic-layer-deposited Al2O3–Parylene C bilayer coating for neural interfaces using accelerated age testing and electrochemical characterization

2014 ◽  
Vol 10 (2) ◽  
pp. 960-967 ◽  
Author(s):  
Saugandhika Minnikanti ◽  
Guoqing Diao ◽  
Joseph J. Pancrazio ◽  
Xianzong Xie ◽  
Loren Rieth ◽  
...  
Keyword(s):  
Atomic Layer ◽  
Electrochemical Characterization ◽  
Neural Interfaces ◽  
Parylene C ◽  
Bilayer Coating

scholarly journals Self-aligned tip deinsulation of atomic layer deposited Al2O3and parylene C coated Utah electrode array based neural interfaces

2014 ◽  
Vol 24 (3) ◽  
pp. 035003 ◽  
Author(s):  
Xianzong Xie ◽  
Loren Rieth ◽  
Sandeep Negi ◽  
Rajmohan Bhandari ◽  
Ryan Caldwell ◽  
...  
Keyword(s):  
Electrode Array ◽  
Atomic Layer ◽  
Neural Interfaces ◽  
Parylene C ◽  
Utah Electrode Array

Atomic Layer Deposited Al2O3 and Parylene C Bi-layer Encapsulation for Utah Electrode Array Based Neural Interfaces

2014 ◽  
Vol 1621 ◽  
pp. 259-265
Author(s):  
Xianzong Xie ◽  
Loren W. Rieth ◽  
Rohit Sharma ◽  
Sandeep Negi ◽  
Rajmohan Bhandari ◽  
...  
Keyword(s):  
Electrode Array ◽  
Atomic Layer ◽  
Implantable Devices ◽  
Neural Interfaces ◽  
Parylene C ◽  
Soaking Time ◽  
Encapsulation Method ◽  
Rf Signal ◽  
Utah Electrode Array

ABSTRACTLong-term functionality and stability of neural interfaces with complex geometries is one of the major challenges for chronic clinic applications due to lack of effective encapsulation. We present an encapsulation method that combines atomic layer deposited Al2O3 and Parylene C for encapsulation of biomedical implantable devices, focusing on its application on Utah electrode array based neural interfaces. The alumina and Parylene C bi-layer encapsulated wired Utah electrode array showed relatively stable impedance during the 960 equivalent soaking days at 37 °C in phosphate buffered solution. For the bi-layer coated wireless neural interfaces, the power-up frequency was constantly ∼ 910 MHz and the RF signal strength was stably around -73 dBm during equivalent soaking time of 1044 days at 37 °C (still under soak testing).

scholarly journals Long-term in-vivo Investigation of Parylene-C as Encapsulation Material for Neural Interfaces

2011 ◽  
Vol 25 ◽  
pp. 483-486 ◽  
Author(s):  
X.Z Xie ◽  
L. Rieth ◽  
P. Tathireddy ◽  
F. Solzbacher
Keyword(s):  
Neural Interfaces ◽  
Parylene C
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