The present work focuses on the use of Fe-rich co-products, originating from different industrial processes, as fixing agents for heavy metals and metalloids. A series of experiments were performed in microcosms to establish the potential of several coproducts, including red-mud, red gypsum and water sludge, to immobilise heavy metals and arsenic. Several chemical methods were used to determine...

Graphene's high mobility and Fermi velocity, combined with its constant light absorption in the visible to far-infrared range, make it an ideal material to fabricate high-speed and ultrabroadband photodetectors. However, the precise mechanism of photodetection is still debated. Here, we report wavelength and polarization-dependent measurements of metal-graphene-metal photodetectors. This allows...

Related Articles Exact control of junction position using epitaxial NiSi2 crystallization in ultrathin silicon-on-insulator metal-oxidesemiconductor field-effect transistors AIP Advances 2, 032126 (2012) Triisopropylsilylethynyl-functionalized anthradithiophene derivatives for solution processable organic field effect transistors Appl. Phys. Lett. 101, 043301 (2012) Electric field-induced scatt...

AgI nanoionics-based resistive switching memories were studied in respect to chemical stability of the Ag/AgI interface using x-ray absorption spectroscopy. The apparent dissolution of Ag films of thickness below some tens of nanometers and the loss of electrode/electrolyte contact was critically addressed. The results evidently show that there are no chemical interactions at the interface desp...

LLE Review, Volume 119 154 Introduction Low-temperature–grown GaAs (LT-GaAs), deposited by molecular beam epitaxy, has been known for its ultrashort, subpicosecond photocarrier lifetime and relatively high carrier mobility. Therefore, in recent years LT-GaAs has been the material of choice for the fabrication of photonic devices such as photoconductive switches,1,2 both of the metal–semiconduct...

The storage and distribution of copper, cadmium, and uranium and their effects on ionic contents in roots and shoots of Azolla filiculoides has been studied by x-ray microanalysis. The relative content of copper was eightfold higher in the root than in the shoot, suggesting low mobility of this metal in Azolla plant. Cadmium relative content in the shoot was similar to its content in the root, ...

Significant advances have been made on our understanding of the fate and transport of engineered nanomaterials. One unexplored aspect of nanoparticle aggregation is how environmental stimuli such as light exposure and temperature variations affect the mobility of engineered nanoparticles. In this study, TiO(2), ZnO, and CeO(2) were chosen as model materials for investigating the mobility of nan...

The dual mobility hip implant has been introduced recently and increasingly used in total hip replacement to maintain the stability and reduce the risk of post-surgery dislocation. However, the kinematics and contact mechanisms of dual mobility hip implants have not been investigated in detail in the literature. Therefore, finite element method was adopted in this study to investigate dynamics ...