A sprayed graphene transistor platform for rapid and low-cost chemical sensing

被引:3
作者
Fenech-Salerno, Benji [1 ]
Holicky, Martin [1 ]
Yao, Chengning [1 ]
Cass, Anthony E. G. [1 ]
Torrisi, Felice [1 ,2 ,3 ]
机构
[1] Imperial Coll London, Dept Chem Mol Sci Res Hub, 82 Wood Lane, London W12 0BZ, England
[2] Univ Catania, Dipartimento Fis & Astron, Via S Sofia 64, I-95123 Catania, Italy
[3] Catania Univ, CNR IMM, Via S Sofia 64, I-95123 Catania, Italy
基金
英国工程与自然科学研究理事会;
关键词
FIELD-EFFECT TRANSISTOR; ION-SELECTIVE ELECTRODES; ELECTROCHEMICAL BIOSENSORS; PHASE EXFOLIATION; BULK OPTODES; CHALLENGES; GRAPHITE; SENSORS; DEVICES; LIQUID;
D O I
10.1039/d2nr05838c
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We demonstrate a novel and versatile sensing platform, based on electrolyte-gated graphene field-effect transistors, for easy, low-cost and scalable production of chemical sensor test strips. The Lab-on-PCB platform is enabled by low-boiling, low-surface-tension sprayable graphene ink deposited on a substrate manufactured using a commercial printed circuit board process. We demonstrate the versatility of the platform by sensing pH and Na+ concentrations in an aqueous solution, achieving a sensitivity of 143 +/- 4 mu A per pH and 131 +/- 5 mu A per log(10)Na(+), respectively, in line with state-of-the-art graphene chemical sensing performance.
引用
收藏
页码:3243 / 3254
页数:12
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