Patterning Metal Contacts and Dopants on Two-dimensional Materials by Thermal Scanning Probe Lithography

2021 ◽  
Author(s):  
Xiangyu Liu ◽  
Xiaorui Zheng ◽  
Edoardo Albisetti ◽  
Annalisa Calo ◽  
Elisa Riedo
Keyword(s):  
Scanning Probe ◽  
Two Dimensional ◽  
Metal Contacts ◽  
Scanning Probe Lithography ◽  
Two Dimensional Materials

scholarly journals Hyperbolic enhancement of photocurrent patterns in minimally twisted bilayer graphene

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
S. S. Sunku ◽  
D. Halbertal ◽  
T. Stauber ◽  
S. Chen ◽  
A. S. McLeod ◽  
...  
Keyword(s):  
Domain Walls ◽  
Hexagonal Boron Nitride ◽  
Twist Angle ◽  
Bilayer Graphene ◽  
Scanning Probe ◽  
Two Dimensional ◽  
Mid Infrared ◽  
Two Dimensional Materials ◽  
Twisted Bilayer Graphene ◽  
Infrared Frequencies

AbstractQuasi-periodic moiré patterns and their effect on electronic properties of twisted bilayer graphene have been intensely studied. At small twist angle θ, due to atomic reconstruction, the moiré superlattice morphs into a network of narrow domain walls separating micron-scale AB and BA stacking regions. We use scanning probe photocurrent imaging to resolve nanoscale variations of the Seebeck coefficient occurring at these domain walls. The observed features become enhanced in a range of mid-infrared frequencies where the hexagonal boron nitride substrate is optically hyperbolic. Our results illustrate the capabilities of the nano-photocurrent technique for probing nanoscale electronic inhomogeneities in two-dimensional materials.

Redox-Active Approach Towards New Magnetic And Conductive Two-Dimensional Materials

2018 ◽  
Author(s):  
Penny Perlepe ◽  
Rodolphe Clérac ◽  
Itziar Oyarzabal ◽  
Corine Mathonière
Keyword(s):  
Two Dimensional ◽  
Active Approach ◽  
Redox Active ◽  
Two Dimensional Materials

scholarly journals Polarization-sensitive photodetectors based on three-dimensional molybdenum disulfide (MoS2) field-effect transistors

Nanophotonics ◽  
2020 ◽  
Vol 9 (16) ◽  
pp. 4719-4728
Author(s):  
Tao Deng ◽  
Shasha Li ◽  
Yuning Li ◽  
Yang Zhang ◽  
Jingye Sun ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Three Dimensional ◽  
Polarized Light ◽  
Optical Field ◽  
Two Dimensional ◽  
Polarization Ratio ◽  
Two Dimensional Materials

AbstractThe molybdenum disulfide (MoS2)-based photodetectors are facing two challenges: the insensitivity to polarized light and the low photoresponsivity. Herein, three-dimensional (3D) field-effect transistors (FETs) based on monolayer MoS2 were fabricated by applying a self–rolled-up technique. The unique microtubular structure makes 3D MoS2 FETs become polarization sensitive. Moreover, the microtubular structure not only offers a natural resonant microcavity to enhance the optical field inside but also increases the light-MoS2 interaction area, resulting in a higher photoresponsivity. Photoresponsivities as high as 23.8 and 2.9 A/W at 395 and 660 nm, respectively, and a comparable polarization ratio of 1.64 were obtained. The fabrication technique of the 3D MoS2 FET could be transferred to other two-dimensional materials, which is very promising for high-performance polarization-sensitive optical and optoelectronic applications.

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