Size-tunable, highly sensitive microelectrode arrays enabled by polymer pen lithography.

Ma, Xinlei; Li, Fengwang; Xie, Zhuang; Xue, Mianqi; Zheng, Zijian; Zhang, Xueji · Soft Matter · 2017

basic_science · Level V

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Abstract

By combining polymer pen lithography (PPL) patterning with in situ polymerization, we report a straightforward and bottom-up approach for bench-top fabrication of microelectrode arrays (MEAs) with well-controlled dimensions. The as-fabricated MEAs can be used to electrodeposit prussian blue in situ and work as a biosensor for H<sub>2</sub>O<sub>2</sub> with a detection limit as low as 5 nM at a sensitivity of 0.7 A cm<sup>-2</sup> M<sup>-1</sup>.