In this paper, hydrophobic/superhydrophobic silicone rubber surfaces with disordered structures were prepared with a nanosecond laser. The fractal characteristic of the surfaces was also investigated. The results show that the fractal structures on the processed silicone rubber surface can roughly reflect the increasing trend of its hydrophobicity. More specifically, the air content in the liquid–solid contact area was found to be related to the surface superhydrophobicity. The solid fraction of superhydrophobic surfaces at close to 0.22 produced with different laser pulse widths can be used to identify whether such surfaces are in the superhydrophobic state after the laser treatment. In addition, the fractal parameters and gas/solid fraction could be used to predict the contact angles of surfaces in Wenzel and Cassie–Baxter states based on the fractal wetting equations. However, it is noted that with the increase of the laser fluence, the silicone rubber surfaces enter into a mixed state where the Wenzel and Cassie–Baxter states coexist. This paper provides a new method to characterize the wettability of the surfaces with the disordered microstructures.
The Delay/Disruption-Tolerant Network (DTN) was short of effective methods to avoid routing hole region when encountered it. Direct at such two problems, a two-hop ACK forward algorithm with alternative copies was presented in this paper. According to simulation results, the performance of this algorithm was superior to comparing algorithms such as the Spray and Wait, etc. in terms of the delivery ratio, the average delay and the network overhead; moreover, this algorithm had a strong applicability in vehicle ad hoc networks (VANET).
In high-speed driving, vehicles can communicate with each other or with roadside infrastructure and direct communication times, resulting in the existing road network dynamically and rapidly build a self-organizing, distributed control vehicle communication network. In the mountain environment, due to the road bumps, complicated surrounding environment, communication conditions often vary widely. This paper studies the characteristics of sub-mountain-vehicle ad hoc network, analyzes the content of automotive MANET routing protocol, we proposed some improvement ideas. I believe this research has a certain reference value for the vehicle-mounted ad hoc network technology under complicated natural environmental conditions.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.