Graphene rolls with tunable chirality A wax-aided immersion methodology is developed to yield graphene rolls with tunable chiral angles; these graphene rolls exhibit promising chiral electronic properties beyond those of other carbon allotropes.
The left-handed and right-handed rolls exhibit optical activity and excellent spin selectivity effects with a spin polarization over 90% at room temperature. The discovery of tunable chirality-induced spin selectivity in tailored roll-shaped allotropes, achievable only through precise control of ...
Reference 9 introduced roll-to-roll (R2R) transfer of graphene grown by CVD on Cu foils as large as 30 × 30in2, guided through a series of rolls: a thermal release tape (i.e. a tape adhesive at RT, but that peels off when heated) was attached to the Cu+graphene foil, and ...
This demonstrated the high sensitivity of GO-L suspensions to Taylor-like rolls. It is also important to note that this flow is observed under a very wide range of shear rates, which is atypical of all other elastic flow instabilities, making it practically viable for producing shear-aligned ...
Flow modeling suggests vorticity-driven Taylor-like rolls Fig. 3: Mathematical vector field model. Full size image Confirmation of predicted flake alignment using Rheo-SAXS To confirm the proposed helical vortex flow and explain the orientation of GO flakes and the abrupt changes between bands, Rheo...
Highly efficient control over the chirality of the emitted light was obtained through small changes in the chemical potential of graphene, allowing active tuning and switching between linearly polarized and both left circularly polarized and right circularly polarized light, over a large wavelength range...
(e) Entire sensing process for a single PS microsphere detected by the graphene-based optical single-cell sensor (GSOCS) in which Δt represents the time changes for a PS microsphere that rolls across the h-rGO detection window. (f) Discrete time-dependent changes in voltage that correspond ...
(e) Entire sensing process for a single PS microsphere detected by the graphene-based optical single-cell sensor (GSOCS) in which Δt represents the time changes for a PS microsphere that rolls across the h-rGO detection window. (f) Discrete time-dependent changes in voltage that correspond ...