| Full text | |
| Author(s): |
Khan, Yasser
[1]
;
Pavinatto, Felippe J.
[2, 1]
;
Lin, Monica C.
[3]
;
Liao, Amy
[3]
;
Swisher, Sarah L.
[1, 4]
;
Mann, Kaylee
[1]
;
Subramanian, Vivek
[1]
;
Maharbiz, Michel M.
[1]
;
Arias, Ana C.
[1]
Total Authors: 9
|
| Affiliation: | [1] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 - USA
[2] Univ Sao Paulo, Phys Inst Sao Carlos, BR-13566590 Sao Carlos, SP - Brazil
[3] Univ Calif Berkeley, Joint Grad Program Bioengn, Berkeley, CA 94720 - USA
[4] Univ Minnesota, Dept Elect & Comp Engn, Minneapolis, MN 55455 - USA
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | ADVANCED FUNCTIONAL MATERIALS; v. 26, n. 7, p. 1004-1013, FEB 16 2016. |
| Web of Science Citations: | 36 |
| Abstract | |
Bioelectronic interfaces require electrodes that are mechanically flexible and chemically inert. Flexibility allows pristine electrode contact to skin and tissue, and chemical inertness prevents electrodes from reacting with biological fluids and living tissues. Therefore, flexible gold electrodes are ideal for bioimpedance and biopotential measurements such as bioimpedance tomography, electrocardiography (ECG), electroencephalography (EEG), and electromyography (EMG). However, a manufacturing process to fabricate gold electrode arrays on plastic substrates is still elusive. In this work, a fabrication and low-temperature sintering (similar to 200 degrees C) technique is demonstrated to fabricate gold electrodes. At low-temperature sintering conditions, lines of different widths demonstrate different sintering speeds. Therefore, the sintering condition is targeted toward the widest feature in the design layout. Manufactured electrodes show minimum feature size of 62 mu m and conductivity values of 5 x 10(6) S m(-1). Utilizing the versatility of printing and plastic electronic processes, electrode arrays consisting of 31 electrodes with electrode-to-electrode spacing ranging from 2 to 7 mm are fabricated and used for impedance mapping of conformal surfaces at 15 kHz. Overall, the fabrication process of an inkjet-printed gold electrode array that is electrically reproducible, mechanically robust, and promising for bioimpedance and biopotential measurements is demonstrated. (AU) | |
| FAPESP's process: | 11/05742-0 - Fabrication of biosensors using printing techniques |
| Grantee: | Felippe José Pavinatto |
| Support Opportunities: | Scholarships abroad - Research |