From two-dimensional materials to heterostructures

T Niu, A Li - Progress in Surface Science, 2015 - Elsevier
Graphene, hexagonal boron nitride, molybdenum disulphide, and layered transition metal
dichalcogenides (TMDCs) represent a class of two-dimensional (2D) atomic crystals with …

Plasma-wave terahertz detection mediated by topological insulators surface states

L Viti, D Coquillat, A Politano, KA Kokh, ZS Aliev… - Nano Letters, 2016 - ACS Publications
Topological insulators (TIs) represent a novel quantum state of matter, characterized by
edge or surface-states, showing up on the topological character of the bulk wave functions …

Ultra-broadband and high response of the Bi 2 Te 3–Si heterojunction and its application as a photodetector at room temperature in harsh working environments

J Yao, J Shao, Y Wang, Z Zhao, G Yang - Nanoscale, 2015 - pubs.rsc.org
Broadband photodetection is central to various technological applications including
imaging, sensing and optical communications. On account of their Dirac-like surface state …

Colorimetric Biosensor for Detection of Cancer Biomarker by Au Nanoparticle-Decorated Bi2Se3 Nanosheets

L **ao, A Zhu, Q Xu, Y Chen, J Xu… - ACS applied materials & …, 2017 - ACS Publications
The colorimetric biosensors have attracted intensive interest; however, their relatively low
sensitivity limits their applications in clinic detection. Herein, we develop an effective …

Negligible Surface Reactivity of Topological Insulators Bi2Se3 and Bi2Te3 towards Oxygen and Water

LV Yashina, J Sánchez-Barriga, MR Scholz… - Acs Nano, 2013 - ACS Publications
The long-term stability of functional properties of topological insulator materials is crucial for
the operation of future topological insulator based devices. Water and oxygen have been …

The role of surface chemical reactivity in the stability of electronic nanodevices based on two-dimensional materials “beyond graphene” and topological insulators

A Politano, MS Vitiello, L Viti, DW Boukhvalov… - FlatChem, 2017 - Elsevier
Here, we examine the influence of surface chemical reactivity toward ambient gases on the
performance of nanodevices based on two-dimensional materials “beyond graphene” and …

Interplay of Surface and Dirac Plasmons in Topological Insulators: The Case of

A Politano, VM Silkin, IA Nechaev, MS Vitiello, L Viti… - Physical review …, 2015 - APS
We have investigated plasmonic excitations at the surface of Bi 2 Se 3 (0001) via high-
resolution electron energy loss spectroscopy. For low parallel momentum transfer q∥, the …

Stability and Surface Reconstruction of Topological Insulator Bi2Se3 on Exposure to Atmosphere

MT Edmonds, JT Hellerstedt, A Tadich… - The Journal of …, 2014 - ACS Publications
The stability of the surface of vacuum-cleaved topological insulator Bi2Se3 single crystals is
investigated with high-resolution synchrotron-based photoelectron spectroscopy. While the …

Bi 2 Se 3-assisted membrane crystallization

F Macedonio, A Politano, E Drioli, A Gugliuzza - Materials Horizons, 2018 - pubs.rsc.org
The identification of new practical routes through rational design of membranes is
mandatory to enhance the quality of minerals recovered from seawater and/or brine using …

Surface Oxidation of Bi2(Te,Se)3 Topological Insulators Depends on Cleavage Accuracy

CR Thomas, MK Vallon, MG Frith, H Sezen… - Chemistry of …, 2016 - ACS Publications
Topological insulators are characterized by their unique surface electronic states, which
involve a Dirac cone with linear dispersion and massless electrons that exhibit …