Impact of electromagnetic fields on in vitro toxicity of silver and graphene nanoparticles.
Research
RF Safe Research Library
Jan 1, 2019
This in vitro study examined whether RF electromagnetic fields (900, 2400, 7500 MHz) modify the toxicity of silver and graphene nanoparticles in human fibroblast cultures. The authors report EMF-associated changes in cytotoxicity and ROS that depended on nanoparticle type, shape, and concentration, with the strongest…
Electron-phonon bound states in graphene in a perpendicular magnetic field.
Research
RF Safe Research Library
Jan 1, 2012
This theoretical/physics study analyzes the spectrum of electron-phonon complexes in monolayer graphene in a perpendicular quantizing magnetic field. It reports that near the threshold of optical phonon emission, standard perturbation theory fails for calculating the scattering amplitude. The authors describe new…
Spin current pumped by a rotating magnetic field in zigzag graphene nanoribbons.
Research
RF Safe Research Library
Jan 1, 2010
This theoretical study models electron spin resonance and spin/charge pumping in zigzag graphene nanoribbons driven by a transverse rotating magnetic field without applied bias. It reports that pumped spin current density increases with ribbon size and rotating-field intensity, and that even-chain ribbons can also…
The effect of magnetic field and disorders on the electronic transport in graphene nanoribbons.
Research
RF Safe Research Library
Jan 1, 2010
This paper presents a mesoscopic transport modeling framework (NEGF plus a real-space π-orbital model) to study how a uniform perpendicular magnetic field affects electronic transport in armchair graphene nanoribbons. The authors report width-dependent equilibrium current profiles and edge-localized transport under…
Electronic properties of a graphene antidot in magnetic fields.
Research
RF Safe Research Library
Jan 1, 2010
This paper describes unusual electronic properties of a graphene antidot created by a piecewise constant potential in a magnetic field. It reports near-complete localization of electron probability within the barrier region under some conditions and a symmetry linking antidot and dot states with identical…
The modulation of the de Haas-van Alphen effect in graphene by electric field.
Research
RF Safe Research Library
Jan 1, 2010
This theoretical/physics paper examines how an in-plane uniform electric field affects the de Haas-van Alphen (dHvA) effect in graphene. It reports that magnetization, magnetic susceptibility, and dHvA oscillation behavior depend on a dimensionless parameter β = E/(vF B), with divergences described at a critical…
Disordered electrical potential observed on the surface of SiO2 by electric field microscopy.
Research
RF Safe Research Library
Jan 1, 2010
This study characterizes the electrical potential on the surface of ~300 nm SiO2 grown on single-crystalline Si under ambient conditions using electric field microscopy. It reports an inhomogeneous surface potential with fluctuations up to ~0.4 V over ~1 µm regions. The authors propose these fluctuations could affect…
Biased bilayer graphene: semiconductor with a gap tunable by the electric field effect.
Research
RF Safe Research Library
Jan 1, 2007
This paper reports that the electronic gap in bilayer graphene can be controlled externally via a gate bias (electric field effect). Using magnetotransport (Shubnikov-de Haas) data and a tight-binding model, the authors extract the gap as a function of electronic density. They report tuning the gap from zero to…