Specifically, we focus on the scattering of phonons by boron (B), nitrogen (N), and phosphorus substitutions as well as single- and double-carbon vacancies in graphene. We show that changes of the atomic structure and harmonic interatomic force constants locally near defects govern the strength ...
Defect scattering is well known to suppress thermal transport. In this study, however, we perform both molecular dynamics and Boltzmann transport equation calculations, to demonstrate that introducing defect scattering in nanoscale heating zone could surprisingly enhance thermal conductance of the system by...
Würzburg University researchers have created a defect in graphene that allows ions to pass through, which could lead to new applications in water filtration or sensor technology. The Würzburg model system consisting of two nanographene layers that can absorb and bind chloride ions (green) through ...
Therefore, more phonon-defect scattering is stimulated in SV-defective graphene and consequently it undergoes more severe deterioration in thermal conductivity than its DV counterpart and SW counterpart. Nevertheless, when the defect density is large enough (>1%), the thermal conductivity of the ...
We report a facile and cost-effective approach to develop self-standing reduced Graphene Oxide (rGO) film based optical sensor and its low-temperature performance analysis where midgap defect states play a key role in tuning the crucial sensor parameters. Graphite oxide (GO) is produced by modifie...
Herein, tunable and temperature-independent magnetotransport of graphene foam (GF) is achieved using a controlled fluorination process. The magnitude of the MR decreases with the increasing fluorination time (i.e., 30, 60 and 90 min), indicating that defect-induced scattering plays a major role...
The catalytic dose is increased from 40 to 60 mg in dye solution with increasing decomposition rate of the reaction as evidenced from Fig. 6c However, the degradation is reduced by raising the concentration of catalyst above 60 mg due to the scattering of light and poor penetra- ...
in the linear relationship of 2θ- sin2ψ. The data illustrate how the scattering peaks progressively shift to the left as the ψ angle varies from 10 to 60° at different levels. The stress induced in perovskite can be calculated by fitting the plots (2θ- sin2ψ). Notably, a ...
Utilizing nanomachining technologies, it is possible to manipulate the heat transport in graphene by introducing different defects. However, due to the difficulty in suspending large-area single-layer graphene (SLG) and limited temperature sensitivity of the present probing methods, the correlation betwee...
A. Vibrational spectroscopy at atomic resolution with electron impact scattering. Nat. Phys. 15, 1237–1241 (2019). CAS Google Scholar Senga, R. et al. Position and momentum mapping of vibrations in graphene nanostructures. Nature 573, 247–250 (2019). ADS CAS PubMed Google Scholar Koch,...