Investigation of the Drag-Reduction Phenomenon on Plasma-Modified Surface

Autor: Gutembergy Ferreira Diniz, Ivan Alves de Souza, João Freire de Medeiros Neto, Anderson Wagner Menezes, Jailson Alves de Souza, Jayme Ortiz, Thércio Henrique de Carvalho Costa, Kleiber Lima de Bessa, Michelle Cequeira Feitor

Publikováno v: Symmetry, Vol 14, Iss 3, p 524 (2022)

Drag is one of the main energy-dissipating phenomena in engineering applications. Drag-reduction mechanisms have been studied to reduce this cost. Superhydrophobic surfaces (SHS) have high water repellency and have been studied as an alternative mech

Externí odkaz: https://doaj.org/article/0eec3dc7fb2141c8b37dc8e8a68048ba

Study of High-Density Polyethylene (HDPE) Kinetics Modification Treated by Dielectric Barrier Discharge (DBD) Plasma

Autor: Michelle Cequeira Feitor, Rômulo Ribeiro Magalhães de Sousa, Gutembergy Ferreira Diniz, M. S. Libório, Ivan Alves de Souza, Thércio Henrique de Carvalho Costa, João Freire de Medeiros Neto, Talita Galvão Targino

Publikováno v: Polymers, Vol 12, Iss 2422, p 2422 (2020)
Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN
Polymers
Volume 12
Issue 10

In this work, the plasma was used in the dielectric barrier discharge (DBD) technique for modifying the high-density polyethylene (HDPE) surface. The treatments were performed via argon or oxygen, for 10 min, at a frequency of 820 Hz, voltage of 20 k

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bcc751cd7f33c5e1aaa10964c5795fd
https://www.mdpi.com/2073-4360/12/10/2422

Triple langmuir probe, optical emission spectroscopy and lissajous figures for diagnosis of plasma produced by dielectric barrier discharge of parallel plates in atmospheric pressure

Autor: Thércio Henrique de Carvalho Costa, Igor Oliveira Nascimento, Efrain Pantaleon Matamoros, Ivan Alves de Souza, Fernanda de Melo Fernandes, Rômulo Ribeiro Magalhães de Sousa, João Freire de Medeiros Neto, Michelle Cequeira Feitor

Publikováno v: Repositório Institucional da UFRN
Universidade Federal do Rio Grande do Norte (UFRN)
instacron:UFRN

2030-12 This work aimed to characterize a Dielectric Barrier Discharge (DBD) plasma equipment through optical and electrical measurements, seeking to obtain a greater knowledge of the plasma production process and how it behaves through the adopted p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cb26930f92a74994c5f3d056a861124
https://repositorio.ufrn.br/handle/123456789/45480