Development of a new generation of diamond-coated thermometers to extend small-scale oceanic measurements of temperature

PI建议开发一种金刚石涂层的多晶硅热敏电阻，其空间分辨率为0.1毫米，时间分辨率为0.1毫秒，并具有在全海洋深度部署所需的强度。传感器将使用半导体制造工艺制造，使用0.5微米的多晶硅层作为传感器，并使用金刚石涂层薄层将多晶硅与海水隔离。在很小的空间和时间尺度上测量海洋温度对于确定混合率、了解湍流和海气交换过程是必要的。然而，目前的温度计技术既不具备从现有平台进行必要测量的空间分辨率也不具备时间分辨率，也不具有足够的鲁棒性。这些特性的结合将提供一个强大的温度计，具有前所未有的分辨率，并将允许在迄今为止无法实现的尺度上进行海洋研究。有两个应用领域提供了动力：研究海气界面的边界层，以及研究海洋内部的湍流和混合。海洋混合的量化是通过直接测量温度波动的扩散平滑率来进行的。在海气相互作用廓线仪和高分辨率廓线仪上实施拟议的传感器将分别允许对界面边界层进行常规检测，并提高对所有深度的海洋耗散的测量能力。此外，PI预计在高速拖曳和自主仪器中的其他应用，这将扩大各种混合和海气交换研究的测量能力。更广泛的影响如果成功，一个快速，强大，安静和相对便宜的传感器将是一个重大的进步，目前可用的传感器，并可能看到广泛的使用在海洋混合，海气相互作用，气候的研究。许多研究人员希望测量和了解近海面的海洋温度剖面。PI表示致力于找到一家公司，将使传感器商业化提供给社区。

The PIs are proposing the development of a diamond-coated polysilicon thermistor with a spatial resolution of 0.1 mm, temporal resolution of 0.1 ms, and the strength required for deployment at full ocean depths. The sensor will be constructed using a semiconductor fabrication process, using a 0.5 micrometer layer of polysilicon as the sensor, and a thin layer of diamond coating to insulate the polysilicon from seawater. Measurement of ocean temperature to very small space and time scales is necessary to determine mixing rates, and to understand turbulence and air-sea exchange processes. However, current thermometer technology possesses neither the spatial nor the temporal resolution to make the necessary measurements from existing platforms, nor is it sufficiently robust. The combination of these properties will provide a robust thermometer that has unprecedented resolution and will allow ocean studies at scales that have been heretofore unachievable. Two areas of application provide motivation: studies of the boundary layer at the air-sea interface, and studies of turbulence and mixing in the ocean interior. Quantification of ocean mixing is carried out by direct measurements of, the rate of diffusive smoothing of temperature fluctuations. Implementation of the proposed sensor on the Air-Sea Interaction Profiler and the High Resolution Profiler will respectively allow routine detection of the interfacial boundary layer, and enhance measurement abilities for oceanic dissipation at all depths. In addition, the PIs anticipate other applications in higher speed towed and autonomous instruments that will enable expanded measurement capabilities for a variety of mixing and air-sea exchange studies. Broader ImpactsIf successful, a fast, robust, quite and relatively inexpensive sensor would be a significant advancement over currently-available sensors, and could see broad usage in studies of ocean mixing, air-sea interaction, climate. Many investigators want to measure and understand the ocean temperature profile near the sea surface. The PI's express a commitment to finding a company that will make the sensor commercially available to the community.