This study will lead to the possibility of combining the other two-dimensional materials, and create a new situation of wireless sensing applications. "
Eetimes London Report - Researchers in Manchester University, the University of Manchester, embedded graphene sensors into radio frequency identification (RFID) equipment to achieve no battery, wireless intelligent humidity monitoring. The goal of this study is to achieve the application of Internet of Things (IOT) in sensitive operating environments such as manufacturing, food safety, healthcare and nuclear waste treatment.
The researchers describe their work in the paper that has just published in the Scientific Report. By layered graphene oxide (GO, graphene derivative) to graphene to create a flexible heterogeneous structure, the team developed a humidity sensor for remote monitoring, and can be connected to any wireless network. The experimental device does not require battery power because it obtains electricity from the energy collector. According to the researchers, these sensors can print layer-by-layer, and achieve large-scale mass production at very low cost.
Zhirun HU, head of research group, predicted that this study will lead to the possibility of combining other two-dimensional materials in the future, and create a new situation of wireless sensing applications. "
According to this paper, this study also involves measuring the relative dielectric constant of GO under various humidity conditions of Gigabole. The researchers found that the relative dielectric constant increases with the increase of water absorption. Experimental results in the Gabuque frequency environment, different from the results in a few megab or lower frequency environments, in low frequency environments, relative dielectric constants increase with humidity.
The researchers utilize such electrical properties of graphene oxides, and the RFID humidity sensor is made by coating a GO layer on the graphene antenna. The resonance frequency of the GO / graphene antenna and the backscattering phase are particularly sensitive to the surrounding humidity, and the specific value can be detected by the RFID reader. Thus, the structure allows the digital recognition device to be placed on any location or article, and the wireless humidity monitoring is realized, and the low-cost high-efficiency sensor applied to the Internet of Things is flat. The sensor can print layer-by-layer mass production at a low cost, and the technique can be applied to a series of 2D materials. (Source: Manchester University)
Graphhene was found in Manchester University in 2004, is the first two-dimensional material. It is more robust than steel, lighter, more flexible, and electrical conductivity is better than copper. Since graphene is discovered, there are other two-dimensional materials that have been identified, and this list is still growing. Scientists are layered by the precise choice of precisely selected sequence to create a Van Der Waals Heterostructures that they can create high-performance structures for specific purposes.
Konstantin Novoselov, a professor, awarded by the University of Manchester, won the Nobel Physics Award in 2010, and he said that the project is "the first example of printable technology, several two-dimensional materials collection together, create suitable industrial applications) Functional devices. The Internet of Things is a rapidly growing technical field. I believe that two-dimensional materials will play an important role here. "
Original address: https://www.eeboard.com/news/shimoxi-16/
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