Advanced Analyzers for Monitoring Submarine Atmosphere

The Navy requires an advanced sensor system to improve submarine atmosphere monitoring performance while reducing maintenance cost and downtime. To meet this need, we designed, developed and assembled the key components of an advanced Raman spectrographic analyzer system during Phase I and conducted proof of concept testing. The system is based on a unique adaptation of surface-enhanced Raman spectroscopy (SERS) that uses multiple nanoparticle-coated substrates to provide the high-performance chemical monitoring that is required. Phase I testing demonstrated that the new analyzer, as planned for Phase II, will provide the needed capability to detect, identify and measure ultra-low trace-level chemical compounds in the atmosphere and provide measurement readouts in real time. The system is small, compact and highly durable, requiring only minimal, inexpensive maintenance. It is also programmable allowing for software changes that enable identification of additional target chemicals of interest as may be needed in the future. In Phase II we are proposing to optimize all system design features, fabricate and test the sensor components and produce a prototype monitor/analyzer that can be readily integrated into submarine spaces. This technology will fully meet Navy requirements and bring state-of-the-art capability to the Navy fleet.