-
- Jie Hu
- University of Illinois at Urbana-Champaign Department of Mechanical Science and Engineering, , 1206 West Green Street, Urbana, Illinois 61801, USA
-
- Kyungsuk Yum
- University of Illinois at Urbana-Champaign Department of Mechanical Science and Engineering, , 1206 West Green Street, Urbana, Illinois 61801, USA
-
- Arash Tajik
- University of Illinois at Urbana-Champaign Department of Mechanical Science and Engineering, , 1206 West Green Street, Urbana, Illinois 61801, USA
-
- Majid Minary-Jolandan
- University of Illinois at Urbana-Champaign Department of Mechanical Science and Engineering, , 1206 West Green Street, Urbana, Illinois 61801, USA
-
- Jeahoon Bang
- University of Illinois at Urbana-Champaign Department of Mechanical Science and Engineering, , 1206 West Green Street, Urbana, Illinois 61801, USA
-
- Min-Feng Yu
- University of Illinois at Urbana-Champaign Department of Mechanical Science and Engineering, , 1206 West Green Street, Urbana, Illinois 61801, USA
説明
<jats:p>A direct-write nanofabrication technique was applied to fabricate high aspect ratio Pt needle electrodes for site specific electrochemistry and electrophysiology. Non-passivated and passivated (with a 10 nm thin insulating film) Pt needles having uniform radii as small as 100 nm and lengths over 30 μm were deposited on the exposed conductive ends of ultramicroelectrodes to form extended needle electrodes. Diffusion limited current and its dependence on the radius of the Pt needle were measured with linear sweep voltammetry. Model fittings validated the function of such needle electrodes for effective microscale electrochemical studies and potentially electrophysiological applications.</jats:p>
収録刊行物
-
- Applied Physics Letters
-
Applied Physics Letters 99 (5), 2011-08-01
AIP Publishing