Temperature-dependent Raman scattering provides valuable information on electron–phonon coupling and phonon anharmonicity of graphene. In this study, we show an enhancement of Joule heating in graphene by conf
Figure2cshows the Raman spectra of 4 and 39 L WSe2measured with a 532 nm laser line. The feature peaked at 249.3 cm−1is the first-order Raman signal, which arises from theA1gphonon mode24. Additional features peaked at 138.8, 257.5, 309.5, 360.6, 373.1, and 395.7 cm...
We study the room-temperature electrical control of charge and spin transport in high-quality bilayer graphene, fully encapsulated with hBN and contacted via 1D spin injectors. We show that spin transport in this device architecture is measurable at room temperature and its spin transport parameters ...
It is important to note that the value of Kf is solely dependent on the solvent and remains unaffected by the solute. As an illustration, a solution of ZnCl2 at a concentration of 1 mol/kg has a freez- ing point of − 5.58 °C. Although this equation is applica- ble ...
the difference in Raman vibration modes of Hf-MPO-1500 and Zr-MPO-1500 demonstrates that the reaction kinetics between 1000 and 1500 °C is highly composition-dependent. In order to track the heat flow and structural transition associated kinetics of MPOs, the differential scanning calorimetry (...
Optically addressable spins associated with defects in wide-bandgap semiconductors are versatile platforms for quantum information processing and nanoscale sensing, where spin-dependent inter-system crossing transitions facilitate optical spin initializa
An alternative way to increase EQE is to stack more monolayers inside the tunnel region separated by thin hBN10. Details of the EQE estimation are given in Supplementary Section 7. Fig. 3: Current-dependent polariton EL intensity. a,b, Polariton dispersion from EL under current injections of ...
(black line). Both spectra are fitted with multi-peak functions to extract the Raman peaks (red line). In the irradiated area, the G- and D-bands appear on top of the Raman peak associated to hBN.dRoom temperature spectrum of a single photon emitter inside the irradiated area (highlighted...
the difference in Raman vibration modes of Hf-MPO-1500 and Zr-MPO-1500 demonstrates that the reaction kinetics between 1000 and 1500 °C is highly composition-dependent. In order to track the heat flow and structural transition associated kinetics of MPOs, the differential scanning calorimetry (...
the different carrier mobilities of the patterned and unpatterned sections of the channel lead to differential Joule heating during carrier transport, which further enhances the thermal gradient in the system by increasing the temperature-dependent Seebeck coefficients in the patterned and unpatterned regio...