Compacted nanoscale sensors by merging ZnO nanorods with interdigitated electrodes

Qin Wang; David B. Rihtnesberg; Andreas Bergström; Susanne Almqvist; Andy Z. Z. Zhang; Wlodek Kaplan; Jan Y. Andersson; Abhilash Sugunan; Xuran Yang; Muhammet S. Toprak

doi:10.1117/12.883365

13 May 2011 Compacted nanoscale sensors by merging ZnO nanorods with interdigitated electrodes

Qin Wang, David B. Rihtnesberg, Andreas Bergström, Susanne Almqvist, Andy Z. Z. Zhang, Wlodek Kaplan, Jan Y. Andersson, Abhilash Sugunan, Xuran Yang, Muhammet S. Toprak

Author Affiliations +

Proceedings Volume 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III; 80312J (2011) https://doi.org/10.1117/12.883365
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

ZnO nanorods (NRs) sensors utilizing hybrid or monolithic integration of the NRs on nanoscale or microscale interdigitated electrodes (IDEs) were fabricated and characterized. The IDEs with their finger electrode width ranging from 50 nm to 3 μm were formed on SiO₂/Si substrates by nanoimprint lithography or conventional photolithography and metallization techniques, whereas the ZnO NRs were grown by chemical synthesis method. The average diameter of the ZnO NRs is about 100 nm, and their length can be varied from 2 to 5 μm by controlling growth time. When sensing targets, such as molecules or nanoparticles, bind onto the ZnO NRs, the conductance between IDEs will change. As probing test, II-VI quantum dots (QDs) were attached on the ZnO NRs, and clear responses were obtained by measuring and comparing current-voltage (I-V) characteristic of the sensor before and after binding the QDs.

Citation Download Citation

Qin Wang, David B. Rihtnesberg, Andreas Bergström, Susanne Almqvist, Andy Z. Z. Zhang, Wlodek Kaplan, Jan Y. Andersson, Abhilash Sugunan, Xuran Yang, and Muhammet S. Toprak "Compacted nanoscale sensors by merging ZnO nanorods with interdigitated electrodes", Proc. SPIE 8031, Micro- and Nanotechnology Sensors, Systems, and Applications III, 80312J (13 May 2011); https://doi.org/10.1117/12.883365

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