8.6 Functional Nanomaterials Sciences Cooperation Group
241
Fig. 8.3 Exemplary reflectivity modelling of a preliminary chiral mirror design, performed within
research work in the team of the author in 2017. Simulation executed by O. Mey using a Fourier
modal method (S4), preliminary data for a design suggestion by the author based on patterned
DBRs for exploratory purposes. Note that the quality of simulated spectra strongly depends on
the modelling resolution/Fourier coefficients. Nonetheless, the coarse spectra for opposite circular
polarisation σ ± indicate sufficient reflectivity differences. For comparison, the expected stop band
for DBRs with 12 and 24 mirror pairs are displayed in dashed and dash-dotted lines, respectively
crystallised out of the wish to enable two things: (1) a broader interaction among
the various participants of the 1st Sino–German Symposium on Functional NanoMaterials Sciences in Hangzhou (FNMS2018) [113, 114] from which the equallylabelled cooperation group (FNMS-COOP) has been forged; (2) the involvement
of groups with different expertise and background (with, both, various synthesis
and characterisation capabilities), as well as project members with mutual interest
in the performed research work. Naturally, existing collaborations and constructive
interactions have been at the core of forming the group. The scope of the project
including the organisation of multiple symposia may serve as a great platform for
enhanced collaboration providing many interaction and connection opportunities for
the involved parties and their co-workers.
TMDC-Based Optoelectronic Devices
For effficient and sensitive photodetection, new concepts employing 2D materials,
such as graphene and related materials, are being intensively investigated in the
whole research community (as discussed in the literature, such as [115–118], to
name but a few). Based on the experience obtained from previous work on a hybrid
graphene-based photodetector [119] and polarisation-sensitive absorption from highsymmetry TMDC bilayers [104], and within the scope of this cooperation group,
photodetector concepts using monolayer or few-layer 2D semiconductors are going
to be explored further, particularly with a focus on heterostructures [72, 73] and
twisted homo-/hetero-bilayers. Twisted bilayers can give rise to moiré patterns (see
241
Fig. 8.3 Exemplary reflectivity modelling of a preliminary chiral mirror design, performed within
research work in the team of the author in 2017. Simulation executed by O. Mey using a Fourier
modal method (S4), preliminary data for a design suggestion by the author based on patterned
DBRs for exploratory purposes. Note that the quality of simulated spectra strongly depends on
the modelling resolution/Fourier coefficients. Nonetheless, the coarse spectra for opposite circular
polarisation σ ± indicate sufficient reflectivity differences. For comparison, the expected stop band
for DBRs with 12 and 24 mirror pairs are displayed in dashed and dash-dotted lines, respectively
crystallised out of the wish to enable two things: (1) a broader interaction among
the various participants of the 1st Sino–German Symposium on Functional NanoMaterials Sciences in Hangzhou (FNMS2018) [113, 114] from which the equallylabelled cooperation group (FNMS-COOP) has been forged; (2) the involvement
of groups with different expertise and background (with, both, various synthesis
and characterisation capabilities), as well as project members with mutual interest
in the performed research work. Naturally, existing collaborations and constructive
interactions have been at the core of forming the group. The scope of the project
including the organisation of multiple symposia may serve as a great platform for
enhanced collaboration providing many interaction and connection opportunities for
the involved parties and their co-workers.
TMDC-Based Optoelectronic Devices
For effficient and sensitive photodetection, new concepts employing 2D materials,
such as graphene and related materials, are being intensively investigated in the
whole research community (as discussed in the literature, such as [115–118], to
name but a few). Based on the experience obtained from previous work on a hybrid
graphene-based photodetector [119] and polarisation-sensitive absorption from highsymmetry TMDC bilayers [104], and within the scope of this cooperation group,
photodetector concepts using monolayer or few-layer 2D semiconductors are going
to be explored further, particularly with a focus on heterostructures [72, 73] and
twisted homo-/hetero-bilayers. Twisted bilayers can give rise to moiré patterns (see