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Preparation and evaluation of conductive polymeric composite from metals alloys and graphene to be future flexible antenna device

Abdelrahman Ameen, Erchiqui Fouad, Nedil Mourad

Advances in Materials Science

2021

Vol. 21, nr 4(70)

34--52

Every year hundreds of serious accidents and catastrophic are accompanied by mining sector services as disaster, flooding, and demolition. To reduce the severity of the results such as high death numbers, lost communication inner and out mining, we have to find an easy way to improve communication means during that problems. In this paper, we reach out to fabricate durable, flexible, and wearable chaps, in addition to an easier carrier with highly efficient receiving and sending a signal at 2.4 GHz broad wide band. By doping a bunch of unique conductive metals (silver, copper, and gallium indium alloy) assembled on Graphene, its integration inside Polydimethylsiloxane to be future applicable antenna. Furthermore, we studied the physical and electric properties of a composite including Electrochemical Impedance properties (EIS), cyclic voltammetry (CV), and its thermal stability chip (DSC), as well as, using Transmission electron microscopy (TEM), and, scanning electron microscopy (SEM) techniques to clarify the surface morphology of fabricated materials. In addition to various measurements had been carried out such as Ultraviolet-visible, inductively coupled plasma (ICP) spectroscopy, and Energy-dispersive X-ray spectroscopy (EDX) to reinforce and elucidate the solid-state of ions inside fabricated Antenna. On the other hand, throughout stress-strain for the stretchability of fabricated is expanded to 30% of its original length, in addition to thermal stability reached to 485°C compared to pure PDMS substrate, with enhancing electric conductivity of composite ship.

Toksyczność nanocząstek metali : wybrane zagadnienia

Zapór L.

Przemysł Chemiczny

2012

T. 91, nr 6

1237-1240

W najbliższych latach planowanego rozwoju nanotechnologii spodziewany jest wzrost narażenia na nanocząstki metali. Dane dotyczące toksyczności nanocząstek, chociaż niejednokrotnie sprzeczne są na tyle niepokojące, że są one postrzegane jako jedno z głównych, nowych zagrożeń dla zdrowia pracowników. W artykule przedstawiono wybrane zagadnienia dotyczące toksyczności nanocząstek metali.

A review, with 36 refs., of respiratory, transdermal and gastro-intestinal hazards connected with the presence of metal nanoparticles in the work environment.