Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Lafetá, Lucas"'
Autor:
Lafeta, Lucas, Hartmann, Sean, Rosa, Bárbara, Reitzenstein, Stephan, Malard, Leandro M., Hartschuh, Achim
The controlled assembly of twisted 2D structures requires precise determination of the crystal orientation of their component layers. In the established procedure, the second-harmonic generation (SHG) intensity of a noncentrosymmetric layer is record
Externí odkaz:
http://arxiv.org/abs/2409.02071
Autor:
Sortino, Luca, Biechteler, Jonas, Lafeta, Lucas, Kühner, Lucca, Hartschuh, Achim, Menezes, Leonardo de S., Maier, Stefan A., Tittl, Andreas
Photonics has been revolutionized by breakthroughs in optical metasurfaces and layered two-dimensional materials. Yet, integrating these two fields in a singular system has remained challenging. Here, we introduce the concept of van der Waals (vdW) h
Externí odkaz:
http://arxiv.org/abs/2407.16480
Publikováno v:
The Journal of Physical Chemistry C 2023 127 (41), 20438-20444
In this work we investigate the role of exciton resonances in coherent anti-Stokes Raman scattering (er-CARS) in single walled carbon nanotubes (SWCNTs). We drive the nanotube system in simultaneous phonon and excitonic resonances, where we observe a
Externí odkaz:
http://arxiv.org/abs/2305.04029
Autor:
Sousa, Frederico B., Lafeta, Lucas, Cadore, Alisson R., Sahoo, Prasana K., Malard, Leandro M.
Publikováno v:
2D Mater. 8 035051 (2021)
The interface between two different semiconductors is crucial in determining the electronic properties at the heterojunction, therefore novel techniques that can probe these regions are of particular interest. Recently it has been shown that heteroju
Externí odkaz:
http://arxiv.org/abs/2108.04646
Autor:
Cunha, Renan, Lafeta, Lucas, Fonseca, Emerson A., Barbosa, Alexandre, Romano-Silva, Marco A., Vieira, Rafael, Jorio, Ado, Malard, Leandro M.
Publikováno v:
Analyst, 2021,146, 2945-2954
Given the long subclinical stage of Alzheimer's disease (AD), the study of biomarkers is relevant both for early diagnosis and the fundamental understanding of the pathophysiology of AD. Biomarkers provided by amyloid-${\unicode[Times]{x3B2}}$ (A${\u
Externí odkaz:
http://arxiv.org/abs/2102.03993
Autor:
Lafeta, Lucas, Corradi, Aurea, Zhang, Tianyi, Kahn, Ethan, Bilgin, Ismail, Carvalho, Bruno R., Kar, Swastik, Terrones, Mauricio, Malard, Leandro M.
Publikováno v:
2D Mater. 8 035010 (2021)
Semiconducting Transition Metal Dichalcogenides (TMDs) have significant nonlinear optical effects. In this work we have used second-harmonic generation (SHG) and the four-wave mixing (FWM) spectroscopy in resonance with the excitons in MoS2, MoSe2, a
Externí odkaz:
http://arxiv.org/abs/2101.10319
Autor:
Gadelha, Andreij C., Cadore, Alisson R., Lafeta, Lucas, de Paula, Ana M., Malard, Leandro M., Lacerda, Rodrigo G., Campos, Leonardo C.
Publikováno v:
Nanotechnology 31 255701 (2020)
Inducing electrostatic doping in 2D materials by laser exposure (photodoping effect) is an exciting route to tune optoelectronic phenomena. However, there is a lack of investigation concerning in what respect the action of photodoping in optoelectron
Externí odkaz:
http://arxiv.org/abs/2006.09513
Akademický článek
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Autor:
Lafetá, Lucas, Cardore, Alisson, Sá, Thiago G. Mendes, Watanabe, Kenji, Taniguchi, Takashi, Campos, Leonardo C., Jorio, Ado, Malard, Leandro M.
Publikováno v:
Nano Letters 2017, 17, 6, 3447-3451
In this work we probe the third-order non-linear optical property of graphene, hexagonal boron nitride and their heterostructure by the use of coherent anti-Stokes Raman Spectroscopy. When the energy difference of the two input fields match the phono
Externí odkaz:
http://arxiv.org/abs/1701.09023
Akademický článek
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