Nanomaterials Based In-Line Sensor for Ionic Silver in Spacecraft Potable Water Systems

nbsp;NASA needs an advanced sensing technology for in-line measurement of ionic silver in spacecraft potable water systems. Such a sensor should be small, robust, lightweight requiring low-power consumption. This sensor should be compatible with existing systems and capable of stable, continuous, and autonomous measurements of silver for extended periods of time. InnoSense LLC (ISL) will develop an innovative nanomaterial-enabled Silver ion Monitor (SilMonTM) based on ISLrsquo;s patented microelectronic device platform. This project will support NASA needs expressed in 2020 NASA Technology Taxonomy, TX06 Human Health, Life Support, and Habitation Systems (TX06.1.2 Water Recovery and Management). In Phase I, ISL will: (1) design and fabricate the sensor with appropriate recognition molecule, and (2) evaluate the sensor performance. Feasibility will be demonstrated by achieving sensitive and selective detection of silver ion in the concentration range of 10ndash;1000 ppb. In Phase II, we will optimize the sensor design, recognition chemistry and algorithm, fabricate prototypes and perform rigorous characterizations.