Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Elder A. de Vasconcelos"'
Autor:
Yesmin Panecatl-Bernal, Rodolfo Lima Juárez, Elder Alpes de Vasconcelos, Melissa Chávez Portillo, Walter Mendes de Azevedo, Miguel-Ángel Méndez-Rojas, Rafael Garrido-Rosado, Julio Villanueva-Cab, Salvador Alcántara Iniesta, Joaquín Alvarado
Publikováno v:
Materials Research Express, Vol 8, Iss 6, p 065011 (2021)
ZnO/MCM-41 composites consisting of loose particles with an irregular, wrinkled surface and flower-like morphology were obtained by adding MCM-41 to a mixture of zinc nitrate hexahydrate and hexamethylenetetramine under hydrothermal conditions. The p
Externí odkaz:
https://doaj.org/article/c545790d3ec44f598ec4dabc691aafbd
Autor:
Maria Natali Gomes dos Santos, Cassiana Mendonça dos Santos, Marcelo Tavares Gomes de Souza, Elder Alpes de Vasconcelos, Ana Cecília Vieira da Nóbrega, Érika Pinto Marinho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddd45f0abaed9c9e3eca9ba0a3111376
https://doi.org/10.2139/ssrn.4387363
https://doi.org/10.2139/ssrn.4387363
Autor:
Joaquín Alvarado, Salvador Alcántara Iniesta, Elder A. de Vasconcelos, Rodolfo Lima Juárez, Miguel Angel Méndez Rojas, Julio Villanueva Cab, Yesmin Panecatl Bernal, Walter M. de Azevedo
Publikováno v:
Optik. 185:429-440
This work reports the synthesis of MCM-41 powder via sol-gel and hydrothermal methods, which allows to obtain for the first time, thin films through spin-coating technique with good homogeneity on the silicon substrate, without making the deposition
Autor:
Elder A. de Vasconcelos, Julio Villanueva-Cab, Joaquín Alvarado, Melissa Chávez Portillo, Yesmin Panecatl-Bernal, Rafael Garrido-Rosado, Walter M. de Azevedo, Salvador Alcántara Iniesta, Miguel-Ángel Méndez-Rojas, Rodolfo Lima Juárez
Publikováno v:
Materials Research Express. 8:065011
ZnO/MCM-41 composites consisting of loose particles with an irregular, wrinkled surface and flower-like morphology were obtained by adding MCM-41 to a mixture of zinc nitrate hexahydrate and hexamethylenetetramine under hydrothermal conditions. The p
Publikováno v:
Journal of the Korean Physical Society. 58:1256-1260
Autor:
Elder A. de Vasconcelos, Rosa F. Dutra, Newton G. Peres, Eronides F. da Silva, Valdinete Lins da Silva, Cintya O. Pereira
Publikováno v:
Biosensors and Bioelectronics. 25:870-876
A simplified measurement scheme and device structure aiming at developing a low cost, label-free, point-of-care capacitive biosensor were investigated. The detection principle is the increase of low frequency capacitance between two planar Al electro
Autor:
Elder A. de Vasconcelos, Fábio Muchenski, Eronides F. da Silva, Andreia G. Macedo, Lucimara S. Roman, R. Valaski, Antonio Ferreira da Silva
Publikováno v:
Thin Solid Films. 517:870-873
We investigated the electrical and optical properties of porous Si (PS) light-emitting diodes using fluorinated tin oxide (FTO) as transparent electrodes. At high forward bias, the current–voltage characteristic is space charge limited. At low forw
Autor:
Maria da Paz Carvalho da Silva, Rosa F. Dutra, J. C. Maciel, Eronides F. da Silva, Valder N. Freire, Elder A. de Vasconcelos, José Luiz de Lima Filho, Paula Ferdinanda Conceição de Mascena Diniz Maia, Karla Regina Rizzardi Cajueiro, Maria de Mascena Diniz Maia
Publikováno v:
Process Biochemistry. 42:429-433
Porous silicon layers fabricated by the reaction-induced vapor phase stain etch method were coated with 5% polyethylenimine. Urease from Canavalia brasiliensis beans was immobilized on this support through covalent linking with 2.5% glutaraldehyde. T
Autor:
A. A. Andrade, Roberto Weider de Assis Franco, E. F. da Silva, Virgílio de Carvalho dos Anjos, Elder A. de Vasconcelos, Maria José Valenzuela Bell, R.T. Faria, I.A. Esquef, Maria Priscila Pessanha de Castro
Publikováno v:
Materials Science Forum. :703-706
In this paper we combine the use of photo-thermal techniques, Thermal lens (TL) spectrometry, Photoacoustic and heat capacity measurements to determine the optical path dependence with temperature (ds/dT) of a polycrystalline 3C-SiC sample. Results o
Autor:
Elder A. de Vasconcelos, W.M. de Azevedo, B. E. C. A. dos Santos, J. A. K. Freire, E. F. da Silva
Publikováno v:
physica status solidi (a). 202:1539-1542
We report a new method to form reproducible luminescent porous silicon layers in p-type and n-type substrates of low and high resisivity, with minimum apparatus and maximum simplicity. No equipment, formation of electrical contacts, illumination or a