Subproject A05

2^nd Funding Period

2D Heterostructures from Microfluidically Exfoliated Quantum Materials

The project will focus on transferring the liquid exfoliation process to a continuous microfluidic device to gain better control over the size, thickness, and homogeneity of the 2DMs and avoid agglomeration without the use of surfactants. In direct combination with printing techniques, thin particle layers with defined thickness and morphology shall be generated. Subsequent chemical and physical investigation will provide information on whether a coherent topologically conductive state can be achieved.

1^st Funding Period

Chemical Access to 2D Topological Insulators via Delamination

The project will focus on the development of appropriate wet chemical exfoliation techniques for topologial insulators (TIs) such as Bi₁₄Rh₃I₉ and related layered compounds, Bi₂TeX (X = Br, I), Bi₂MnTe₄, and GaGeTe. In particular, this includes the synthesis of high-quality crystals as starting materials, as well as the chemical and physical characterization of the products by quantum theory and various experimental techniques. Thus, the project aims at chemically and structurally defined 2DMs with 1 to 10 layers and lateral dimensions of at least 1 μm.

Principal investigator

Prof. Dr. Michael Ruck