Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0448, USA.
Analyst. 2011 Jul 21;136(14):2912-7. doi: 10.1039/c1an15193b. Epub 2011 Jun 2.
The development of wearable screen-printed electrochemical sensors on underwater garments comprised of the synthetic rubber neoprene is reported. These wearable sensors are able to determine the presence of environmental pollutants and security threats in marine environments. Owing to its unique elastic and superhydrophobic morphology, neoprene is an attractive substrate for thick-film electrochemical sensors for aquatic environments and offers high-resolution printing with no apparent defects. The neoprene-based sensor was evaluated for the voltammetric detection of trace heavy metal contaminants and nitroaromatic explosives in seawater samples. We also describe the first example of enzyme (tyrosinase) immobilization on a wearable substrate towards the amperometric biosensing of phenolic contaminants in seawater. Furthermore, the integration of a miniaturized potentiostat directly on the underwater garment is demonstrated. The wearable sensor-potentiostat microsystem provides a visual indication and alert if the levels of harmful contaminants have exceeded a pre-defined threshold. The concept discussed here is well-suited for integration into dry- and wetsuits worn by divers and recreational surfers/swimmers, thereby providing them with the ability to continuously assess their surroundings for environmental contaminants and security hazards.
本文报道了在由合成橡胶氯丁橡胶制成的水下衣物上开发可穿戴的丝网印刷电化学传感器。这些可穿戴传感器能够检测海洋环境中的环境污染物和安全威胁。由于氯丁橡胶具有独特的弹性和超疏水形态，因此它是用于水生环境的厚膜电化学传感器的理想基底，并且可以进行高分辨率打印，而不会出现明显的缺陷。基于氯丁橡胶的传感器用于检测海水中痕量重金属污染物和硝基芳烃爆炸物的伏安检测。我们还描述了酶（酪氨酸酶）在可穿戴基底上固定化的第一个实例，以用于海水样品中酚类污染物的安培生物传感。此外，还展示了在水下衣物上直接集成微型电化学工作站。可穿戴传感器-电化学工作站微系统提供了一种视觉指示和警报，如果有害污染物的水平超过了预定的阈值。这里讨论的概念非常适合集成到潜水员和娱乐冲浪者/游泳者穿着的干式和湿式潜水服中，从而使他们能够持续评估周围环境中的环境污染物和安全隐患。
