Steinhauer Stephan, Singh Vidyadhar, Cassidy Cathal, Gspan Christian, Grogger Werner, Sowwan Mukhles, Köck Anton
Materials Center Leoben Forschung GmbH, 8700 Leoben, Austria. Nanoparticles by Design Unit, Okinawa Institute of Science and Technology (OIST) Graduate University, 1919-1 Onna-Son, Okinawa 904-0495, Japan.
Nanotechnology. 2015 May 1;26(17):175502. doi: 10.1088/0957-4484/26/17/175502. Epub 2015 Apr 9.
We report on conductometric gas sensors based on single CuO nanowires and compare the carbon monoxide (CO) sensing properties of pristine as well as Pd nanoparticle decorated devices in humid atmosphere. Magnetron sputter inert gas aggregation combined with a quadrupole mass filter for cluster size selection was used for single-step Pd nanoparticle deposition in the soft landing regime. Uniformly dispersed, crystalline Pd nanoparticles with size-selected diameters around 5 nm were deposited on single CuO nanowire devices in a four point configuration. During gas sensing experiments in humid synthetic air, significantly enhanced CO response for CuO nanowires decorated with Pd nanoparticles was observed, which validates that magnetron sputter gas aggregation is very well suited for the realization of nanoparticle-functionalized sensors with improved performance.
我们报道了基于单根氧化铜纳米线的电导式气体传感器，并比较了原始器件以及在潮湿气氛中用钯纳米颗粒修饰的器件对一氧化碳（CO）的传感特性。磁控溅射惰性气体聚集结合四极质量过滤器用于簇尺寸选择，用于在软着陆模式下单步沉积钯纳米颗粒。尺寸选择直径约为5nm的均匀分散的结晶钯纳米颗粒以四点配置沉积在单根氧化铜纳米线器件上。在潮湿合成空气中进行气体传感实验期间，观察到用钯纳米颗粒修饰的氧化铜纳米线对CO的响应显著增强，这证实磁控溅射气体聚集非常适合用于实现性能改进的纳米颗粒功能化传感器。
