M
Marcelo G. Vivas
Researcher at Universidade Federal de Alfenas
Publications - 57
Citations - 795
Marcelo G. Vivas is an academic researcher from Universidade Federal de Alfenas. The author has contributed to research in topics: Two-photon absorption & Absorption (electromagnetic radiation). The author has an hindex of 17, co-authored 52 publications receiving 641 citations. Previous affiliations of Marcelo G. Vivas include University of São Paulo.
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Molecular Structure – Optical Property Relationships for a Series of Non-Centrosymmetric Two-photon Absorbing Push-Pull Triarylamine Molecules
Marcelo G. Vivas,Marcelo G. Vivas,Daniel L. Silva,Daniel L. Silva,Jérémy Malinge,Mohammed Boujtita,Robert Zaleśny,Wojciech Bartkowiak,Hans Ågren,Sylvio Canuto,Leonardo De Boni,Eléna Ishow,Eléna Ishow,Cleber Renato Mendonça +13 more
TL;DR: The 2PA results were eventually supported and confronted with theoretical DFT calculations of the two-photon transition oscillator strengths and in terms of EWG strength, degree of donor-acceptor charge transfer and electronic coupling between the arms.
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Nonlinear spectra of ZnO: reverse saturable, two- and three-photon absorption
TL;DR: This work generated tunable 1-kHz repetition rate laser pulses and employed the Z-scan technique to investigate the nonlinear absorption spectrum of ZnO, a large-bandgap material with potential blue-to-UV photonic device applications.
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First-Order Hyperpolarizability of Triphenylamine Derivatives Containing Cyanopyridine: Molecular Branching Effect
Ruben D. Fonseca,Marcelo G. Vivas,D. L. Silva,Gwennaelle Eucat,Yann Bretonnière,Chantal Andraud,Leonardo De Boni,Cleber Renato Mendonça +7 more
TL;DR: In this article, the multibranching effect on the dynamic first-order hyperpolarizability (β(−2ω; ω, ω)) of triphenylamine derivatives containing cyanopyridine was reported.
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Studying the intersystem crossing rate and triplet quantum yield of meso-substituted porphyrins by means of pulse train fluorescence technique
Tiago Gualberto Bezera de Souza,Marcelo G. Vivas,Cleber Renato Mendonça,Shane Plunkett,Mikhail A. Filatov,Mathias O. Senge,Leonardo De Boni +6 more
TL;DR: In this paper, a set of meso-substituted porphyrins bearing different electron-donor and acceptor groups was studied by pulse train fluorescence technique.
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Study of singlet excited state absorption spectrum of lutetium bisphthalocyanine using the femtosecond Z-scan technique
TL;DR: In this paper, the authors investigated the singlet excited state absorption of lutetium bisphthalocyanine (LuPc2) over a wide spectral range and observed distinct nonlinear absorption behaviors; saturable (SA) and reverse saturable absorption (RSA) was observed below 640 and above 680 nm, while SA occurs around the Q-band region, located around 660 nm.