| Tipo de Docum.: |
artículo |
| Título: |
Inkjet-printed electrode modified with magnetite particles and carbon nanotubes for the non-enzymatic amperometric determination of hydrogen peroxide |
| Autor: |
Mass, M. I.;
Veiga, L. S.;
Garate, O. F.;
Ybarra, G. O.;
Ramón, E.;
Gabriel, G.
|
| Reunión: |
Congreso Iberoamericano de Sensores. IIbersensor. Buenos Aires. AR , Ibersensor, 2022, Buenos Aires. AR, 2022 |
| Idioma: |
spa |
| Datos de Edición: |
Buenos Aires. AR. 2022. |
| Pág./Vol.: |
p. 70-73: fot.; grafs. |
| Notas: |
Los datos de esta licencia se obtuvieron del documento Um olhar sobre os sensores na Península Ibérica e América Latina: Ano 2022. 12° Congresso Ibero-Americano de Sensores. DOI: https://doi.org/10.48528/h76t-t092 Consultado: 09/02/2024. |
| Descriptores: |
Sensores;
Tintas;
Electrodos;
Nanotubos de carbono;
Amperímetros
|
 Ver Documento
|
Trabajo de INTI |
| Tipo de Docum.: |
documento de conferencia |
| Título: |
Impresión inkjet de sensores de pH utilizando polianilina y nanotubos de carbono |
| Autor: |
Bilbao, E.;
Garate, O.;
Veiga, L. S.;
Medrano, A. V.;
Molinari, F. N.;
Escobar, M. M.;
Ybarra, G. O.;
Monsalve, L. M.
|
| Reunión: |
Instituto Nacional de Tecnología Industrial. INTI. Argentina, TecnoINTI edición 2022. Jornadas de Desarrollo Tecnológico e Innovación, 14, Buenos Aires. AR, 2022 |
| Idioma: |
spa |
| Datos de Edición: |
Buenos Aires. AR. INTI. 2022. |
| Pág./Vol.: |
Pag. varias: grafs.; fot.; il. |
| Unidad técnica: |
INTI-Departamento de Nanomateriales Funcionales;
INTI-Departamento de Procesos de Transformación Textil.
|
| Descriptores: |
Sensores;
pH;
Impresiones;
Tintas;
Polímeros electroactivos;
Electrónica;
Nanotubos de carbono
|
Ver Documento
|
Trabajo de INTI |
| Tipo de Docum.: |
documento de conferencia |
| Título: |
Biosensores electroquímicos impresos por inkjet a base de nanotubos de carbono y nanopartículas cargadas con enzimas |
| Autor: |
Mass, M.;
Veiga, L.;
Garate, O.;
Longinotti, G.;
Ramón, E.;
Gabriel, G.;
Ybarra, G.
|
| Reunión: |
Instituto Nacional de Tecnología Industrial. INTI. Argentina, TecnoINTI edición 2022. Jornadas de Desarrollo Tecnológico e Innovación, 14, Buenos Aires. AR, 2022 |
| Idioma: |
spa |
| Datos de Edición: |
Buenos Aires. AR. INTI. 2022. |
| Pág./Vol.: |
Pag. varias: il.; fot.; grafs. |
| Unidad técnica: |
INTI-Departamento de Prototipado Microelectrónico y Electrónica Impresa.
|
| Descriptores: |
Biosensores;
Electroquímica;
Impresiones;
Tintas;
Nanotubos de carbono
|
Ver Documento
|
Trabajo de INTI |
| Tipo de Docum.: |
documento de conferencia |
| Título: |
Desarrollo de una tinta de nanotubos de carbono para electrodos impresos |
| Autor: |
Garate, O.;
Veiga, L.;
Longinotti, G.;
Lloret, P.;
Ybarra, G.;
Medrano, A.;
Monsalve, L.
|
| Reunión: |
Instituto Nacional de Tecnología Industrial. INTI. Argentina, TecnoINTI edición 2017. Jornadas Abiertas de Desarrollo, Innovación y Transferencia Tecnológica, 13, Buenos Aires. AR, 2017 |
| Idioma: |
spa |
| Datos de Edición: |
Buenos Aires. AR. INTI. 2017. |
| Pág./Vol.: |
2p. |
| Unidad técnica: |
INTI-Procesos Superficiales;
INTI-Micro y Nanoelectrónica.
|
| Descriptores: |
Tintas;
Nanotubos de carbono;
Electrodos;
Impresiones
|
Ver Documento
|
Trabajo de INTI |
| Tipo de Docum.: |
artículo |
| Título: |
Reduction of die wear and structural defects of railway screw spike heads estimated by FEM |
| Autor: |
Alcázar, Jackeline;
Abate, Germán;
Antunez, Nazareno;
Simoncelli, Alejandro;
Sánchez Egea, Antonio J.;
Martinez Krahmer, Daniel;
López de Lacalle, Norberto
|
| Título Ser./Col.: |
Nanomaterials, 11(11) |
| Autor Inst. Ser./Col.: |
Multidisciplinary Digital Publishing Institute. MDPI. Basilea. Suiza |
| Idioma: |
eng |
| Datos de Edición: |
s.l. MDPI. 2021. |
| Pág./Vol.: |
11p. |
| Unidad técnica: |
INTI-Mecánica.
|
| Descriptores: |
Biosensores;
Métodos electroquímicos;
Impresiones;
Tintas;
Nanotubos de carbono;
Nanopartículas;
Silicio
|
| Resumen: |
Railway spike screws are manufactured by hot forging on a massive scale, due to each kilometer of railway track needing 8600 spike screws. These components have a low market value, so the head must be formed in a single die stroke. The service life of the dies is directly related to the amount of energy required to form a single screw. The existing standard for spike screws specifies only the required tolerances for the head dimensions, particularly the angle of the hub faces and the radius of agreement of the hub with the cap. Both geometrical variables of the head and process conditions (as-received material diameter and flash thickness) are critical parameters in spike production. This work focuses on minimizing the energy required for forming the head of a railway spike screw by computational simulation. The variables with the highest degree of incidence on the energy, forging load, and filling of the die are ordered statistically. The results show that flash thickness is the variable with the most significant influence on forming energy and forming load, as well as on die filling. Specifically, the minimum forming energy was obtained for combining of a hub wall angle of 1.3◦ an as-received material diameter of 23.54 mm and a flash thickness of 2.25 mm. Flash thickness generates a lack of filling at the top vertices of the hub, although this defect does not affect the functionality of the part or its serviceability. Finally, the wear is mainly concentrated on the die splice radii, where the highest contact pressure is concentrated according to the computational simulation results. |
Ver Documento
|
Trabajo de INTI |
URL: |
https://www.mdpi.com/2075-4701/11/11/1834/ |
| Tipo de Docum.: |
artículo |
| Título: |
Fully inkjet-printed biosensors fabricated with a highly stable ink based on carbon nanotubes and enzyme-functionalized nanoparticles |
| Autor: |
Mass, Mijal;
Veiga, Lionel S.;
Garate, Octavio;
Longinotti, Gloria;
Moya, Ana;
Ramón, Eloi;
Villa, Rosa;
Ybarra, Gabriel;
Gabriel, Gemma
|
| Título Ser./Col.: |
Nanomaterials, 11(7) |
| Autor Inst. Ser./Col.: |
Multidisciplinary Digital Publishing Institute. MDPI. Basilea. Suiza |
| Idioma: |
eng |
| Datos de Edición: |
s.l. MDPI. 2021. |
| Pág./Vol.: |
15p. |
| Unidad técnica: |
INTI-Micro y Nanotecnologías.
|
| Descriptores: |
Biosensores;
Métodos electroquímicos;
Impresiones;
Tintas;
Nanotubos de carbono;
Nanopartículas;
Silicio
|
| Resumen: |
Enzyme inks can be inkjet printed to fabricate enzymatic biosensors. However, inks containing enzymes present a low shelf life because enzymes in suspension rapidly lose their catalytic activity. Other major problems of printing these inks are the non-specific adsorption of enzymes onto the chamber walls and stability loss during printing as a result of thermal and/or mechanical stress. It is well known that the catalytic activity can be preserved for significantly longer periods of time and to harsher operational conditions when enzymes are immobilized onto adequate surfaces. Therefore, in this work, horseradish peroxidase was covalently immobilized onto silica nanoparticles. Then, the nanoparticles were mixed into an aqueous ink containing single walled carbon nanotubes. Electrodes printed with this specially formulated ink were characterized, and enzyme electrodes were printed. To test the performance of the enzyme electrodes, a complete amperometric hydrogen peroxide biosensor was fabricated by inkjet printing. The electrochemical response of the printed electrodes was evaluated by cyclic voltammetry in solutions containing redox species, such as hexacyanoferrate (III/II) ions or hydroquinone. The response of the enzyme electrodes was studied for the amperometric determination of hydrogen peroxide. Three months after the ink preparation, the printed enzyme electrodes were found to still exhibit similar sensitivity, demonstrating that catalytic activity is preserved in the proposed ink. Thus, enzyme electrodes can be successfully printed employing highly stable formulation using nanoparticles as carriers. |
Ver Documento
|
Trabajo de INTI |
URL: |
https://www.mdpi.com/2079-4991/11/7/1645 |
| Tipo de Docum.: |
artículo |
| Título: |
Electrochemical determination of β-Lactoglobulin employing a polystyrene bead-modified carbon nanotube ink |
| Autor: |
Molinari, Judith;
Florez, Laura;
Medrano, Anahí;
Monsalve, Leandro;
Ybarra, Gabriel
|
| Título Ser./Col.: |
Biosensors, 8(4) |
| Autor Inst. Ser./Col.: |
Multidisciplinary Digital Publishing Institute. MDPI. Basilea. CH |
| Idioma: |
eng |
| Datos de Edición: |
s.l. MDPI. 2018. |
| Pág./Vol.: |
9p. |
| Unidad técnica: |
INTI-Procesos Superficiales;
INTI-Micro y Nanoelectrónica.
|
| Descriptores: |
Métodos electroquímicos;
Sensores electroquímicos;
Nanotubos de carbón;
Alérgenos;
Alimentos alergénicos;
Poliestireno;
Tintas;
Biosensores
|
| Resumen: |
In this article, we introduce the use of a carboxy-functionalized waterborne carbon nanotube ink for the fabrication of an amperometric biosensor aimed at the quantification of β-lactoglobulin. Detection of this protein from cow’s milk was performed by a sandwich immunoassay onto printed carbon nanotube electrodes. The electrodes were printed using a carbon nanotube ink modified with polystyrene beads containing a high amount of carboxylic groups for protein immobilization. This strategy showed enhanced sensing performance compared to the use of oxidative treatments for the functionalization of electrodes. These electrodes showed an excellent electrochemical behavior, and proteins could be immobilized on their surface via the carbodiimide reaction. These antibody-immobilized carbon nanotube electrodes allowed for the detection of β-lactoglobulin in sub-ppm concentrations. |
Ver Documento
|
Trabajo de INTI |
URL: |
https://www.mdpi.com/2079-6374/8/4/109 |
