All-inkjet-printed dissolved oxygen sensors on flexible plastic substrates
All-inkjet-printed dissolved oxygen sensors on flexible plastic substrates
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DOI：
10.1016/j.orgel.2016.10.002
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发表时间：
2016-12-01
影响因子：
3.2
通讯作者：
Gabriel, Gemma
中科院分区：
文献类型：
--
作者：
Moya, Ana;Sowade, Enrico;Gabriel, Gemma
喷墨印刷是一种有前途的替代制造方法，以传统的标准微制造技术的灵活和低成本的设备的发展。尽管在文献中已经多次报道了使用喷墨印刷来沉积用于开发传感器装置的所选材料，但是利用喷墨技术完全制造传感器装置仍然是一个挑战和走向商业化的潜在途径。在这项工作中，演示了功能性的低成本溶解氧（DO）安培传感器的特征尺寸在微米范围内，使用喷墨印刷的制造。详细讨论了制作一个完整的电化学三电极系统所需的所有工艺步骤。使用金纳米颗粒油墨印刷工作电极和对电极，而使用银纳米颗粒油墨印刷伪参比电极。这两种油墨都是市售的，可以在低温下烧结，从120摄氏度开始，这允许使用塑料基板。此外，通过UV固化的可印刷SU 8油墨配方用作传感器器件中的钝化层。最后，由于分析方法的性能在很大程度上取决于工作电极材料，因此证明了这种印刷DO传感器的电化学可行性，其在0和8 mg L-1的DO范围内显示出线性响应，并且提供0.11 mg L-1的检测限和0.03 RA L mg（-1）的灵敏度。柔性塑料基板和生物相容性油墨的使用，以及制造传感器的快速原型和低成本，使得所提出的制造方法在生物和医学传感器应用领域中开辟了新的机会。(C)© 2016 Elsevier B. V.版权所有。
Inkjet printing is a promising alternative manufacturing method to conventional standard micro fabrication techniques for the development of flexible and low-cost devices. Although the use of inkjet printing for the deposition of selected materials for the development of sensor devices has been reported many times in literature, it is still a challenge and a potential route towards commercialization to completely manufacture sensor devices with inkjet technology. In this work is demonstrated the fabrication of a functional low-cost dissolved oxygen (DO) amperometric sensor with feature sizes in the micrometer range using inkjet printing. All the required technological steps for the fabrication of a complete electrochemical three electrodes system are discussed in detail. The working and counter electrodes have been printed using a gold nanoparticle ink, whereas a silver nanoparticle ink was used to print a pseudo-reference electrode. Both inks are commercially available and can be sintered at low temperatures, starting already at 120 degrees C, which allows the use of plastic substrates. In addition, a printable SU8 ink formulation cured by UV is applied as passivation layer in the sensor device. Finally, as the performance of analytical methods strongly depends on the working electrode material, is demonstrated the electrochemical feasibility of this printed DO sensor, which shows a linear response in the range between 0 and 8 mg L-1 of DO, and affords a detection limit of 0.11 mg L-1, and a sensitivity of 0.03 RA L mg(-1). The use of flexible plastic substrates and biocompatible inks, and the rapid prototyping and low-cost of the fabricated sensors, makes that the proposed manufacturing approach opens new opportunities in the field of biological and medical sensor applications. (C) 2016 Elsevier B.V. All rights reserved.