Abstract
Nanowire networks have great potential in many industrial applications, including batteries, electrical circuits, solar cells, and sensors. In this paper we focus on a specific hydrogen gas nanosensor whose sensing element is a network of palladium nanowires. The nanosensor is modeled using a square, equilateral triangle, and hexagonal lattice. We provide the reliability behavior of this nanosensor when the electrical current is allowed to move in all directions. Our findings reveal an improvement in reliability compared to the scenario where the electrical current could not move from right to left. We show this improvement both analytically and through simulation.
Highlights
Due to their large surface area to volume ratio and available space for making electrical contacts, nanowires have been utilized as interconnects or sensing elements in nanodevices
In general when the electrical current can move in all directions, the reliability functions and expected lifetimes of n × m sized nanosensors will be the same as or higher than when movement is restricted
In this paper we investigated the reliability of a specific hydrogen gas nanosensor made from a network of palladium nanowires
Summary
Due to their large surface area to volume ratio and available space for making electrical contacts, nanowires have been utilized as interconnects or sensing elements in nanodevices. For our nanosensor the electrical current will always prioritize moving left to right in order to follow the path of least resistance and obey Kirchoff’s Laws. We continue to use the square lattice (SL), equilateral triangle lattice (ETL), and hexagonal lattice (HL) to model the structure of the network. In model 2 the nanosensor is operating in a dynamic environment, which we define to be any scenario in which the probability of a nanowire not breaking changes over cycles of hydrogen gas.
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