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Ferroelectric surface induced electron doping in zigzag graphene nanoribbon
(IOP Publishing, 2016-09)
The interface between a zigzag graphene nanoribbon (zGNR) and the ferroelectric PbTiO3 (001) surface is studied through first-principles calculations. We investigate how the electric polarization normal to the surface tunes ...
Estimation of hydraulic parameters of shaly sandstone aquifers from geoelectrical measurements
(Journal of Hydrology, 2000)
Electrical and hydraulic conductivities of shaly sandstones are described using a capillary approach for a granular, clay bearing material. The clays are assumed to occur as shale shells uniformly coating the insulated ...
Brillouin-Induced Dynamic Arbitrary Birefringence
(Institute of Electrical and Electronics Engineers, 2021-04)
A nonlinear method to generate and control both the type and magnitude of the birefringence, as well as differential group delay (DGD) in optical fibers is studied. Experiments show that both parameters of birefringence ...
Local electromethanical properties of the CaCu 3Ti 4O 12 ceramics
(2010-12-01)
Scanning probe microscopy (SPM) was used to probe piezoelectric vibrations and local conductivity in CaCu 3Ti 4O 12 (CCTO) ceramics at room temperature. Piezoelectric contrast was observed on the polished surfaces of CCTO ...
Geophysical and Metalogenetic Modelling of the Copper Occurrence in Camaquã Sedimentary Basin, Brazilian Southern
(2019-01-01)
The geophysics application is indicated procedure in mineral exploration activities, by the quickness and possible global reduction of project cost. This work presents the results of the DC resistivity and induced polarization ...
Integration of geoelectrical methods in the diagnostic of a diesel contaminated site in Santa Ernestina (SP)
(2015-01-01)
Hydrocarbons meet more than 50% of world wide demand for industries and main transportation means. Unfortunately, the use of this energetic matrix in large scale is the frequent cause of contamination of soil and groundwater, ...
Estimation of hydraulic parameters of shaly sandstone aquifers from geoelectrical measurements
(Elsevier, 2000)
Electrical and hydraulic conductivities of shaly sandstones are described using a capillary approach for a granular, clay bearing material. The clays are assumed to occur as shale shells uniformly coating the insulated ...
Geophysical study in a diesel contaminated area due to a railway accident in cerquilho (SP)
(2019-01-01)
In São Paulo State, there are hundreds of contaminated areas due to leakage of hydrocarbons in gas stations, industry or transportation. Chemical compounds transportation is a high-risk activity in function of the ...