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1,196 results on '"Miranda, Rodolfo"'

101. Atomic-scale study of type-II Dirac semimetal PtTe2 surface

Author

Casado Aguilar, Pablo, primary, Calleja, Fabian, additional, Kuo, Chia-Nung, additional, Lue, Chin Shan, additional, Ghosh, Barun, additional, Agarwal, Amit, additional, Politano, Antonio, additional, Vázquez de Parga, Amadeo L, additional, Miranda, Rodolfo, additional, Silva-Guillén, Jose Angel, additional, and Garnica, Manuela, additional

Published
2022
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102. On-Surface Design of a 2D Cobalt-Organic Network Preserving Large Orbital Magnetic Moment

Author

Martín-Fuentes, Cristina, primary, Parreiras, Sofia O., additional, Urgel, José I., additional, Rubio-Giménez, Víctor, additional, Muñiz Cano, Beatriz, additional, Moreno, Daniel, additional, Lauwaet, Koen, additional, Valvidares, Manuel, additional, Valbuena, Miguel A., additional, Gargiani, Pierluigi, additional, Kuch, Wolfgang, additional, Camarero, Julio, additional, Gallego, José M., additional, Miranda, Rodolfo, additional, Martínez, José I., additional, Martí-Gastaldo, Carlos, additional, and Écija, David, additional

Published
2022
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103. Fine Control of In Vivo Magnetic Hyperthermia Using Iron Oxide Nanoparticles with Different Coatings and Degree of Aggregation

Author

Luengo, Yurena, primary, Díaz-Riascos, Zamira V., additional, García-Soriano, David, additional, Teran, Francisco J., additional, Artés-Ibáñez, Emilio J., additional, Ibarrola, Oihane, additional, Somoza, Álvaro, additional, Miranda, Rodolfo, additional, Schwartz, Simó, additional, Abasolo, Ibane, additional, and Salas, Gorka, additional

Published
2022
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104. Interplay between π-Conjugation and Exchange Magnetism in One-Dimensional Porphyrinoid Polymers

Author

Biswas, Kalyan, primary, Urbani, Maxence, additional, Sánchez-Grande, Ana, additional, Soler-Polo, Diego, additional, Lauwaet, Koen, additional, Matěj, Adam, additional, Mutombo, Pingo, additional, Veis, Libor, additional, Brabec, Jiri, additional, Pernal, Katarzyna, additional, Gallego, José M., additional, Miranda, Rodolfo, additional, Écija, David, additional, Jelínek, Pavel, additional, Torres, Tomás, additional, and Urgel, José I., additional

Published
2022
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105. Hybrid molecular graphene transistor as an operando and optoelectronic platform

Author

Trasobares, Jorge, primary, Martín-Romano, Juan, additional, Khaliq, Muhammad, additional, Ruiz-Gómez, Sandra, additional, Foerster, Michael, additional, Orti, Miguel Niño, additional, Pedraz, Patricia, additional, Dappe, Yannick, additional, de Ory, Marina Marina-Calero, additional, García-Pérez, Julia, additional, Acebron, Maria, additional, Rodriguez-Osorio, Manuel, additional, Magaz, María, additional, Gomez, Alicia, additional, Miranda, Rodolfo, additional, and Granados, Daniel, additional

Published
2022
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108. Sub-nT resolution of single layer sensor based on the AMR effect in La_2/_3Sr_1/_3MnO_3 Thin Films

Author

Enger, Luiz Guilherme, Flament, Stephane, Bhatti, Imtiaz-Noor, Guillet, Bruno, Sing, Marc Lam Chok, Pierron, Victor, Lebargy, Sylvain, Díez, Jose Manuel, Vera, Arturo, Martínez, Isidoro, Guerrero, Rubén, Pérez García, Lucas, Perna, Paolo, Camarero, Julio, Miranda, Rodolfo, González, María Teresa, Mechin, Laurence, Enger, Luiz Guilherme, Flament, Stephane, Bhatti, Imtiaz-Noor, Guillet, Bruno, Sing, Marc Lam Chok, Pierron, Victor, Lebargy, Sylvain, Díez, Jose Manuel, Vera, Arturo, Martínez, Isidoro, Guerrero, Rubén, Pérez García, Lucas, Perna, Paolo, Camarero, Julio, Miranda, Rodolfo, González, María Teresa, and Mechin, Laurence

Abstract

©2022Institute of Electrical and Electronics Engineers This work was supported by the European Union Horizon 2020 research and innovation program under Grant 737116., Single-layer magnetoresistive sensors were designed in a Wheatstone bridge configuration using La_2/_3Sr_1/_3MnO_3 ferromagnetic oxide thin film. Uniaxial anisotropy was induced by performing epitaxial deposition of the films on top of vicinal SrTiO_3 substrate. X-ray scan confirms the high crystalline quality of the films and the magnetic anisotropy was checked by magneto-optical Kerr effect measurements. Thanks to the anisotropic magnetoresistive effect and the very low noise measured in the devices, sub-nT resolution was achieved above 100 Hz at 310 K., Unión Europea. Horizonte 2020, Depto. de Física de Materiales, Fac. de Ciencias Físicas, TRUE, pub

Published
2022

109. Native point defects and their implications for the Dirac point gap at MnBi2Te4(0001)

Author

Polímeros y Materiales Avanzados: Física, Química y Tecnología, Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia, Garnica, Manuela, Otrokov, Mikhail M., Casado Aguilar, Pablo, Klimovskikh, I. I., Estyunin, Dmitry, Aliev, Ziya S., Amiraslanov, Imamaddin R., Abdullayev, Nadir A., Zverev, Vladimir N., Babanly, Mahammad B., Mamedov, Nazim T., Shikin, Alexander M., Arnau Pino, Andrés, López Vázquez de Parga, Amadeo, Chulkov, Evgueni V., Miranda, Rodolfo, Polímeros y Materiales Avanzados: Física, Química y Tecnología, Polimero eta Material Aurreratuak: Fisika, Kimika eta Teknologia, Garnica, Manuela, Otrokov, Mikhail M., Casado Aguilar, Pablo, Klimovskikh, I. I., Estyunin, Dmitry, Aliev, Ziya S., Amiraslanov, Imamaddin R., Abdullayev, Nadir A., Zverev, Vladimir N., Babanly, Mahammad B., Mamedov, Nazim T., Shikin, Alexander M., Arnau Pino, Andrés, López Vázquez de Parga, Amadeo, Chulkov, Evgueni V., and Miranda, Rodolfo

Abstract

[EN] We study the surface crystalline and electronic structures of the antiferromagnetic topological insulator MnBi2Te4 using scanning tunneling microscopy/spectroscopy (STM/S), micro(mu)-laser angle-resolved photoemission spectroscopy (ARPES), and density functional theory calculations. Our STM images reveal native point defects at the surface that we identify as Bi-Te antisites and Mn-Bi substitutions. Bulk X-ray diffraction further evidences the presence of the Mn-Bi intermixing. Overall, our characterizations suggest that the defects concentration is nonuniform within crystals and differs from sample to sample. Consistently, the ARPES and STS experiments reveal that the Dirac point gap of the topological surface state is different for different samples and sample cleavages, respectively. Our calculations show that the antiparallel alignment of the Mn-Bi moments with respect to those of the Mn layer can indeed cause a strong reduction of the Dirac point gap size. The present study provides important insights into a highly debated issue of the MnBi2Te4 Dirac point gap.

Published
2022

110. Surface-Assisted Synthesis of N-Containing pi-Conjugated Polymers

Author

Sanchez-Grande, Ana, Urgel, Jose I., Garcia-Benito, Ines, Santos, Jose, Biswas, Kalyan, Lauwaet, Koen, Gallego, Jose M., Rosén, Johanna, Miranda, Rodolfo, Björk, Jonas, Martin, Nazario, Ecija, David, Sanchez-Grande, Ana, Urgel, Jose I., Garcia-Benito, Ines, Santos, Jose, Biswas, Kalyan, Lauwaet, Koen, Gallego, Jose M., Rosén, Johanna, Miranda, Rodolfo, Björk, Jonas, Martin, Nazario, and Ecija, David

Abstract

On-surface synthesis has recently emerged as a powerful strategy to design conjugated polymers previously precluded in conventional solution chemistry. Here, an N-containing pentacene-based precursor (tetraazapentacene) is ex-professo synthesized endowed with terminal dibromomethylene (:CBr2) groups to steer homocoupling via dehalogenation on metallic supports. Combined scanning probe microscopy investigations complemented by theoretical calculations reveal how the substrate selection drives different reaction mechanisms. On Ag(111) the dissociation of bromine atoms at room temperature triggers the homocoupling of tetraazapentacene units together with the binding of silver adatoms to the nitrogen atoms of the monomers giving rise to a N-containing conjugated coordination polymer (P1). Subsequently, P1 undergoes ladderization at 200 degrees C, affording a pyrrolopyrrole-bridged conjugated polymer (P2). On Au(111) the formation of the intermediate polymer P1 is not observed and, instead, after annealing at 100 degrees C, the conjugated ladder polymer P2 is obtained, revealing the crucial role of metal adatoms on Ag(111) as compared to Au(111). Finally, on Ag(100) the loss of :CBr2 groups affords the formation of tetraazapentacene monomers, which coexist with polymer P1. Our results contribute to introduce protocols for the synthesis of N-containing conjugated polymers, illustrating the selective role of the metallic support in the underlying reaction mechanisms., Funding Agencies|European Research Council (ERC CoG ELECNANO) [766555]; Comunidad de Madrid [project QUIMTRONIC-CM] [Y2018/NMT-4783]; Ministerio de Ciencia e Innovacion [PID2019-108532GB-I00]; "Severo Ochoa" Programme for Centers of Excellence in RD (MINECO) [SEV-2016-0686]; European Unions Horizon 2020 research and innovation programme under the Marie Skodowska-Curie grant [886314]; Swedish Research Council; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU) [2009 00971]

Published
2022
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111. Synthesis and Characterization of peri-Heptacene on a Metallic Surface

Author

Biswas K., Urgel J.I., Ajayakumar M.R., Ma J., Sánchez-Grande A., Edalatmanesh S., Lauwaet K., Mutombo P., Gallego J.M., Miranda, Rodolfo, Jelínek P., Feng X., Écija, David, Biswas K., Urgel J.I., Ajayakumar M.R., Ma J., Sánchez-Grande A., Edalatmanesh S., Lauwaet K., Mutombo P., Gallego J.M., Miranda, Rodolfo, Jelínek P., Feng X., and Écija, David

Published
2022

112. Key Parameters for Detectivity Improvement of Low Noise Anisotropic Magnetoresistive Sensors Made of La2/3Sr1/3MnO3 Single Layers on Vicinal Substrates

Author

Enger L.G., Flament S., Bhatti I.N., Rousseau O., Guillet B., Sing M.L.C., Pierron V., Lebargy S., Chaluvadi S.K., Domengés B., Vera A., Díez J.M., Martínez I., Guerrero R., Pérez, Lucas, González, Teresa, Miranda, Rodolfo, Camarero, Julio, Perna, Paolo, Méchin L., Enger L.G., Flament S., Bhatti I.N., Rousseau O., Guillet B., Sing M.L.C., Pierron V., Lebargy S., Chaluvadi S.K., Domengés B., Vera A., Díez J.M., Martínez I., Guerrero R., Pérez, Lucas, González, Teresa, Miranda, Rodolfo, Camarero, Julio, Perna, Paolo, and Méchin L.

Published
2022

113. Native point defects and their implications for the Dirac point gap at MnBi2Te4(0001)

Author

Garnica, Manuela, Otrokov M.M., Aguilar P.C., Klimovskikh I.I., Estyunin D., Aliev Z.S., Amiraslanov I.R., Abdullayev N.A., Zverev V.N., Babanly M.B., Mamedov N.T., Shikin A.M., Arnau A., de Parga A.L.V., Chulkov E.V., Miranda, Rodolfo, Garnica, Manuela, Otrokov M.M., Aguilar P.C., Klimovskikh I.I., Estyunin D., Aliev Z.S., Amiraslanov I.R., Abdullayev N.A., Zverev V.N., Babanly M.B., Mamedov N.T., Shikin A.M., Arnau A., de Parga A.L.V., Chulkov E.V., and Miranda, Rodolfo

Published
2022

114. Engineering Periodic Dinuclear Lanthanide-Directed Networks Featuring Tunable Energy Level Alignment and Magnetic Anisotropy by Metal Exchange

Author

Moreno D., Parreiras S.O., Urgel J.I., Muñiz-Cano B., Martín-Fuentes C., Lauwaet K., Valvidares M., Valbuena, Miguel Ángel, Gallego J.M., Martínez J.I., Gargiani P., Camarero, Julio, Miranda, Rodolfo, Écija, David, Moreno D., Parreiras S.O., Urgel J.I., Muñiz-Cano B., Martín-Fuentes C., Lauwaet K., Valvidares M., Valbuena, Miguel Ángel, Gallego J.M., Martínez J.I., Gargiani P., Camarero, Julio, Miranda, Rodolfo, and Écija, David

Published
2022

117. Interplay between-Conjugation and Exchange Magnetism in One-Dimensional Porphyrinoid Polymers

Author

Biswas K., Urbani M., Sánchez-Grande A., Soler-Polo D., Lauwaet K., Matěj A., Mutombo P., Veis L., Brabec J., Pernal K., Gallego J.M., Miranda, Rodolfo, Écija, David, Jelínek P., Torres, Tomás, Urgel J.I., Biswas K., Urbani M., Sánchez-Grande A., Soler-Polo D., Lauwaet K., Matěj A., Mutombo P., Veis L., Brabec J., Pernal K., Gallego J.M., Miranda, Rodolfo, Écija, David, Jelínek P., Torres, Tomás, and Urgel J.I.

Published
2022

118. Data - Tuning the Magnetic Anisotropy of Lanthanides on a Metal Substrate by Metal–Organic Coordination

Author

Parreiras, Sofía O., Moreno, Daniel, Cirera, Borja, Valbuena, Miguel Ángel, Urgel, José I., Paradinas, Markos, Panighel, Mirco, Ajejas, Fernando, Niño, Miguel A., Gallego, José M., Valvidares, Manuel, Gargiani, Pierluigi, Kuch, Wolfgang, Martínez, José I., Mugarza, Aitor, Camarero, Julio, Miranda, Rodolfo, Perna, Paolo, Écija, David, Parreiras, Sofía O., Moreno, Daniel, Cirera, Borja, Valbuena, Miguel Ángel, Urgel, José I., Paradinas, Markos, Panighel, Mirco, Ajejas, Fernando, Niño, Miguel A., Gallego, José M., Valvidares, Manuel, Gargiani, Pierluigi, Kuch, Wolfgang, Martínez, José I., Mugarza, Aitor, Camarero, Julio, Miranda, Rodolfo, Perna, Paolo, and Écija, David

Abstract

(i) Multiplet calculations for TDA+Dy, TPA+Dy, and antiprism+Dy; (ii) Point charges for multiplet calculations for TDA+Dy and TPA+Dy; (iii) STM images for TDA+Dy and TPA+D; (iv) STS data for TDA+Dy; (v) XAS, XMCD and XNLD data for TDA+Dy, TPA+Dy and Dy clusters

Published
2022

119. On-Surface Design of a 2D Cobalt-Organic Network Preserving Large Orbital Magnetic Moment

Author

Martín-Fuentes C., Parreiras S.O., Urgel J.I., Rubio-Giménez V., Muñiz Cano B., Moreno D., Lauwaet K., Valvidares M., Valbuena M.A., Gargiani P., Kuch W., Camarero, Julio, Gallego J.M., Miranda, Rodolfo, Martínez J.I., Martí-Gastaldo C., Écija, David, Martín-Fuentes C., Parreiras S.O., Urgel J.I., Rubio-Giménez V., Muñiz Cano B., Moreno D., Lauwaet K., Valvidares M., Valbuena M.A., Gargiani P., Kuch W., Camarero, Julio, Gallego J.M., Miranda, Rodolfo, Martínez J.I., Martí-Gastaldo C., and Écija, David

Published
2022

120. High-Performance Implantable Sensors based on Anisotropic Magnetoresistive La0.67Sr0.33MnO3 for Biomedical Applications

Author

Vera A., Martínez I., Enger L.G., Guillet B., Guerrero R., Diez J.M., Rousseau O., Lam Chok Sing M., Pierron V., Perna, Paolo, Hernández J.J., Rodríguez, Isabel, Calaresu I., Meier A., Huck C., Domínguez-Bajo A., González-Mayorga A., López-Dolado E., Serrano M.C., Ballerini L., Pérez, Lucas, Miranda, Rodolfo, Flament S., González, Teresa, Méchin L., Camarero, Julio, Vera A., Martínez I., Enger L.G., Guillet B., Guerrero R., Diez J.M., Rousseau O., Lam Chok Sing M., Pierron V., Perna, Paolo, Hernández J.J., Rodríguez, Isabel, Calaresu I., Meier A., Huck C., Domínguez-Bajo A., González-Mayorga A., López-Dolado E., Serrano M.C., Ballerini L., Pérez, Lucas, Miranda, Rodolfo, Flament S., González, Teresa, Méchin L., and Camarero, Julio

Published
2022

121. Paving the way to point of care (POC) devices for SARS-CoV-2 detection

Author

Kaci K., Del Caño R., Luna M., Milán-Rois P., Castellanos M., Abreu M., Cantón R., Galán J.C., Somoza, Álvaro, Miranda, Rodolfo, González de Rivera G., García-Mendiola T., Lorenzo E., Kaci K., Del Caño R., Luna M., Milán-Rois P., Castellanos M., Abreu M., Cantón R., Galán J.C., Somoza, Álvaro, Miranda, Rodolfo, González de Rivera G., García-Mendiola T., and Lorenzo E.

Published
2022

122. Electrically Tunable Reactivity of Substrate-Supported Cobalt Oxide Nanocrystals

Author

Sánchez-Grande A., Nguyën H.C., Lauwaet K., Rodríguez-Fernández J., Carrasco E., Cirera B., Sun Z., Urgel J.I., Miranda, Rodolfo, Lauritsen J.V., Gallego J.M., López N., Écija, David, Sánchez-Grande A., Nguyën H.C., Lauwaet K., Rodríguez-Fernández J., Carrasco E., Cirera B., Sun Z., Urgel J.I., Miranda, Rodolfo, Lauritsen J.V., Gallego J.M., López N., and Écija, David

Published
2022

123. Data - Engineering Periodic Dinuclear Lanthanide-Directed Networks Featuring Tunable Energy Level Alignment and Magnetic Anisotropy by Metal Exchange

Author

Moreno, Daniel, Parreiras, Sofía O., Urgel, José I., Muñiz-Cano, Beatriz, Martín-Fuentes, Cristina, Lauwaet, Koen, Valvidares, Manuel, Valbuena, Miguel Ángel, Gallego, José M., Martínez, José I., Gargiani, Pierluigi, Camarero, Julio, Miranda, Rodolfo, Écija, David, Moreno, Daniel, Parreiras, Sofía O., Urgel, José I., Muñiz-Cano, Beatriz, Martín-Fuentes, Cristina, Lauwaet, Koen, Valvidares, Manuel, Valbuena, Miguel Ángel, Gallego, José M., Martínez, José I., Gargiani, Pierluigi, Camarero, Julio, Miranda, Rodolfo, and Écija, David

Abstract

(i) Multiplet calculations for DPBP+Dy and DPBP+Er; (ii) Point charges for multiplet calculations for DPBP+Dy and DPBP+Er; (iii) STM images for DPBP+Dy and DPBP+Er; (iv) STS data for DPBP+Dy and DPBP+Er; (v) XAS, XMCD and XLD data for DPBP+Dy and DPBP+Er

Published
2022

125. Amplification-free detection of SARS-CoV-2 using gold nanotriangles functionalized with oligonucleotides

Author

del Caño R., García-Mendiola T., García-Nieto D., Álvaro R., Luna M., Iniesta H.A., Coloma R., Diaz C.R., Milán-Rois P., Castellanos M., Abreu M., Cantón R., Galán J.C., Pineda T., Pariente F., Miranda, Rodolfo, Somoza, Álvaro, Lorenzo E., del Caño R., García-Mendiola T., García-Nieto D., Álvaro R., Luna M., Iniesta H.A., Coloma R., Diaz C.R., Milán-Rois P., Castellanos M., Abreu M., Cantón R., Galán J.C., Pineda T., Pariente F., Miranda, Rodolfo, Somoza, Álvaro, and Lorenzo E.

Published
2022

126. Methylene Blue functionalized carbon nanodots combined with different shape gold nanostructures for sensitive and selective SARS-CoV-2 sensing

Author

Pina-Coronado C., Martínez-Sobrino Á., Gutiérrez-Gálvez L., Del Caño R., Martínez-Periñán E., García-Nieto D., Rodríguez-Peña M., Luna M., Milán-Rois P., Castellanos M., Abreu M., Cantón R., Galán J.C., Pineda T., Pariente F., Somoza, Álvaro, García-Mendiola T., Miranda, Rodolfo, Lorenzo E., Pina-Coronado C., Martínez-Sobrino Á., Gutiérrez-Gálvez L., Del Caño R., Martínez-Periñán E., García-Nieto D., Rodríguez-Peña M., Luna M., Milán-Rois P., Castellanos M., Abreu M., Cantón R., Galán J.C., Pineda T., Pariente F., Somoza, Álvaro, García-Mendiola T., Miranda, Rodolfo, and Lorenzo E.

Published
2022

127. CASCADE: Naked eye-detection of SARS-CoV-2 using Cas13a and gold nanoparticles

Author

López-Valls M., Escalona-Noguero C., Rodríguez-Díaz C., Pardo D., Castellanos M., Milán-Rois P., Martínez-Garay C., Coloma R., Abreu M., Cantón R., Galán J.C., Miranda, Rodolfo, Somoza, Álvaro, Sot, Begoña, López-Valls M., Escalona-Noguero C., Rodríguez-Díaz C., Pardo D., Castellanos M., Milán-Rois P., Martínez-Garay C., Coloma R., Abreu M., Cantón R., Galán J.C., Miranda, Rodolfo, Somoza, Álvaro, and Sot, Begoña

Published
2022

128. Atomic-scale study of type-II Dirac semimetal PtTe2surface

Author

Casado Aguilar P., Calleja, Fabián, Kuo C.-N., Lue C.S., Ghosh B., Agarwal A., Politano A., Vázquez de Parga, Amadeo L., Miranda, Rodolfo, Silva-Guillén, José Ángel, Garnica, Manuela, Casado Aguilar P., Calleja, Fabián, Kuo C.-N., Lue C.S., Ghosh B., Agarwal A., Politano A., Vázquez de Parga, Amadeo L., Miranda, Rodolfo, Silva-Guillén, José Ángel, and Garnica, Manuela

Published
2022

129. Interfacial Exchange Phenomena Driven by Ferromagnetic Domains

Author

Díez J.M., Cuñado J.L.F., Lapa P., Solís R., Arnay I., Pedraz P., Perna, Paolo, Bollero, Alberto, Miranda, Rodolfo, Schuller I.K., Camarero, Julio, Díez J.M., Cuñado J.L.F., Lapa P., Solís R., Arnay I., Pedraz P., Perna, Paolo, Bollero, Alberto, Miranda, Rodolfo, Schuller I.K., and Camarero, Julio

Published
2022

131. Fine Control of In Vivo Magnetic Hyperthermia Using Iron Oxide Nanoparticles with Different Coatings and Degree of Aggregation

Author

Luengo Y., Díaz-Riascos Z.V., García-Soriano D., Terán, Francisco, Artés-Ibáñez E.J., Ibarrola O., Somoza, Álvaro, Miranda, Rodolfo, Schwartz S. Jr., Abasolo I., Salas, Gorka, Luengo Y., Díaz-Riascos Z.V., García-Soriano D., Terán, Francisco, Artés-Ibáñez E.J., Ibarrola O., Somoza, Álvaro, Miranda, Rodolfo, Schwartz S. Jr., Abasolo I., and Salas, Gorka

Published
2022

132. Development of colorimetric sensors based on gold nanoparticles for SARS-CoV-2 RdRp, E and S genes detection

Author

Rodríguez Díaz C., Lafuente-Gómez N., Coutinho C., Pardo D., Alarcón-Iniesta H., López-Valls M., Coloma R., Milán-Rois P., Domenech M., Abreu M., Cantón R., Galán J.C., Bocanegra R., Campos L.A., Miranda, Rodolfo, Castellanos M., Somoza, Álvaro, Rodríguez Díaz C., Lafuente-Gómez N., Coutinho C., Pardo D., Alarcón-Iniesta H., López-Valls M., Coloma R., Milán-Rois P., Domenech M., Abreu M., Cantón R., Galán J.C., Bocanegra R., Campos L.A., Miranda, Rodolfo, Castellanos M., and Somoza, Álvaro

Published
2022

133. Paving the way to Point of Care (POC) devices for SARS-CoV-2 detection [Dataset]

Author

Kaci, Karim, Caño, Rafael del, Luna, Mónica, Milán-Rois, Paula, Castellanos, Milagros, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Somoza, Álvaro, Miranda, Rodolfo, González de Rivera, Guillermo, García-Mendiola, Tania, Lorenzo, Encarnación, Kaci, Karim, Caño, Rafael del, Luna, Mónica, Milán-Rois, Paula, Castellanos, Milagros, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Somoza, Álvaro, Miranda, Rodolfo, González de Rivera, Guillermo, García-Mendiola, Tania, and Lorenzo, Encarnación

Published
2022

134. Electronic Supplementary Material Amplification-Free Detection of SARS-CoV-2 using Gold Nanotriangles Functionalized with Oligonucleotides

Author

Caño, Rafael del, García-Mendiola, Tania, García-Nieto, Daniel, Álvaro Bruna, Raquel, Luna, Mónica, Alarcón Iniesta, Hernán, Coloma, Rocío, Rodríguez Diaz, Ciro, Milán-Rois, Paula, Castellanos, Milagros, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Pineda, Teresa, Pariente, Félix, Miranda, Rodolfo, Somoza, Álvaro, Lorenzo, Encarnación, Caño, Rafael del, García-Mendiola, Tania, García-Nieto, Daniel, Álvaro Bruna, Raquel, Luna, Mónica, Alarcón Iniesta, Hernán, Coloma, Rocío, Rodríguez Diaz, Ciro, Milán-Rois, Paula, Castellanos, Milagros, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Pineda, Teresa, Pariente, Félix, Miranda, Rodolfo, Somoza, Álvaro, and Lorenzo, Encarnación

Published
2022

135. Supplementary Material for ”Native point defects and their implications for the Dirac point gap at MnBi2Te4(0001)”

Author

Garnica, Manuela, Otrokov, M. M., Casado Aguilar, P., Klimovskikh, Ilya I., Estyunin, D., Aliev, Ziya S., Amiraslanov, I. R., Abdullayev, Nadir A., Zverev, Vladimir N., Babanly, M. B., Mamedov, Nazim T., Shikin, Alexander M., Arnau, Andrés, Vázquez de Parga, A. L., Chulkov, Eugene V., Miranda, Rodolfo, Garnica, Manuela, Otrokov, M. M., Casado Aguilar, P., Klimovskikh, Ilya I., Estyunin, D., Aliev, Ziya S., Amiraslanov, I. R., Abdullayev, Nadir A., Zverev, Vladimir N., Babanly, M. B., Mamedov, Nazim T., Shikin, Alexander M., Arnau, Andrés, Vázquez de Parga, A. L., Chulkov, Eugene V., and Miranda, Rodolfo

Published
2022

136. Engineering Periodic Dinuclear Lanthanide-Directed Networks Featuring Tunable Energy Level Alignment and Magnetic Anisotropy by Metal Exchange

Author

European Research Council, European Commission, Moreno, Daniel, Parreiras, Sofia O., Urgel, José I., Muñiz-Cano, Beatriz, Martín-Fuentes, Cristina, Lauwaet, Koen, Valvidares, Manuel, Valbuena, Miguel A., Gallego, José M., Martínez, José I., Gargiani, Pierluigi, Camarero, Jesús Julio, Miranda, Rodolfo, Écija, David, European Research Council, European Commission, Moreno, Daniel, Parreiras, Sofia O., Urgel, José I., Muñiz-Cano, Beatriz, Martín-Fuentes, Cristina, Lauwaet, Koen, Valvidares, Manuel, Valbuena, Miguel A., Gallego, José M., Martínez, José I., Gargiani, Pierluigi, Camarero, Jesús Julio, Miranda, Rodolfo, and Écija, David

Abstract

[EN] The design of lanthanide multinuclear networks is an emerging field of research due to the potential of such materials for nanomagnetism, spintronics, and quantum information. Therefore, controlling their electronic and magnetic properties is of paramount importance to tailor the envisioned functionalities. In this work, a multidisciplinary study is presented combining scanning tunneling microscopy, scanning tunneling spectroscopy, X-ray absorption spectroscopy, X-ray linear dichroism, X-ray magnetic circular dichroism, density functional theory, and multiplet calculations, about the supramolecular assembly, electronic and magnetic properties of periodic dinuclear 2D networks based on lanthanide-pyridyl interactions on Au(111). Er- and Dy-directed assemblies feature identical structural architectures stabilized by metal–organic coordination. Notably, despite exhibiting the same +3 oxidation state, there is a shift of the energy level alignment of the unoccupied molecular orbitals between Er- and Dy-directed networks. In addition, there is a reorientation of the easy axis of magnetization and an increment of the magnetic anisotropy when the metallic center is changed from Er to Dy. Thus, the results show that it is feasible to tune the energy level alignment and magnetic anisotropy of a lanthanide-based metal-organic architecture by metal exchange, while preserving the network design.

Published
2022

137. Paving the way to point of care (POC) devices for SARS-CoV-2 detection

Author

Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), Comunidad de Madrid, European Commission, Fundación Instituto Madrileño de Estudios Avanzados en Nanociencia, Universidad Autónoma de Madrid, Banco Santander, Conferencia de Rectores de las Universidades Españolas, Consejo Superior de Investigaciones Científicas (España), Kaci, Karim, Caño, Rafael del, Luna, Mónica, Milán-Rois, Paula, Castellanos, Milagros, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Somoza, Álvaro, Miranda, Rodolfo, González de Rivera, Guillermo, García-Mendiola, Tania, Lorenzo, Encarnación, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), Comunidad de Madrid, European Commission, Fundación Instituto Madrileño de Estudios Avanzados en Nanociencia, Universidad Autónoma de Madrid, Banco Santander, Conferencia de Rectores de las Universidades Españolas, Consejo Superior de Investigaciones Científicas (España), Kaci, Karim, Caño, Rafael del, Luna, Mónica, Milán-Rois, Paula, Castellanos, Milagros, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Somoza, Álvaro, Miranda, Rodolfo, González de Rivera, Guillermo, García-Mendiola, Tania, and Lorenzo, Encarnación

Abstract

In this work we present a powerful, affordable, and portable biosensor to develop Point of care (POC) SARS-CoV-2 virus detection. It is constructed from a fast, low cost, portable and electronically automatized potentiostat that controls the potential applied to a disposable screen-printed electrochemical platform and the current response. The potentiostat was designed to get the best signal-to-noise ratio, a very simple user interface offering the possibility to be used by any device (computer, mobile phone or tablet), to have a small and portable size, and a cheap manufacturing cost. Furthermore, the device includes as main components, a data acquisition board, a controller board and a hybridization chamber with a final size of 10 × 8 × 4 cm. The device has been tested by detecting specific SARS-CoV-2 virus sequences, reaching a detection limit of 22.1 fM. Results agree well with those obtained using a conventional potentiostat, which validate the device and pave the way to the development of POC biosensors. In this sense, the device has finally applied to directly detect the presence of the virus in nasopharyngeal samples of COVID-19 patients and results confirm its utility for the rapid detection infected samples avoiding any amplification process.

Published
2022

138. Methylene Blue functionalized carbon nanodots combined with different shape gold nanostructures for sensitive and selective SARS-CoV-2 sensing

Author

Comunidad de Madrid, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Conferencia de Rectores de las Universidades Españolas, Banco Santander, Consejo Superior de Investigaciones Científicas (España), Pina-Coronado, Clara, Martínez-Sobrino, Álvaro, Gutiérrez-Gálvez, Laura, Caño, Rafael del, Martínez-Periñán, Emiliano, García-Nieto, Daniel, Rodríguez-Peña, Micaela, Luna, Mónica, Milán-Rois, Paula, Castellanos, Milagros, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Pineda, Teresa, Pariente, Félix, Somoza, Álvaro, García-Mendiola, Tania, Miranda, Rodolfo, Lorenzo, Encarnación, Comunidad de Madrid, Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Conferencia de Rectores de las Universidades Españolas, Banco Santander, Consejo Superior de Investigaciones Científicas (España), Pina-Coronado, Clara, Martínez-Sobrino, Álvaro, Gutiérrez-Gálvez, Laura, Caño, Rafael del, Martínez-Periñán, Emiliano, García-Nieto, Daniel, Rodríguez-Peña, Micaela, Luna, Mónica, Milán-Rois, Paula, Castellanos, Milagros, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Pineda, Teresa, Pariente, Félix, Somoza, Álvaro, García-Mendiola, Tania, Miranda, Rodolfo, and Lorenzo, Encarnación

Abstract

The development of DNA-sensing platforms based on new synthetized Methylene Blue functionalized carbon nanodots combined with different shape gold nanostructures (AuNs), as a new pathway to develop a selective and sensitive methodology for SARS-CoV-2 detection is presented. A mixture of gold nanoparticles and gold nanotriangles have been synthetized to modify disposable electrodes that act as an enhanced nanostructured electrochemical surface for DNA probe immobilization. On the other hand, modified carbon nanodots prepared a la carte to contain Methylene Blue (MB-CDs) are used as electrochemical indicators of the hybridization event. These MB-CDs, due to their structure, are able to interact differently with double and single-stranded DNA molecules. Based on this strategy, target sequences of the SARS-CoV-2 virus have been detected in a straightforward way and rapidly with a detection limit of 2.00 aM. Moreover, this platform allows the detection of the SARS-CoV-2 sequence in the presence of other viruses, and also a single nucleotide polymorphism (SNPs). The developed approach has been tested directly on RNA obtained from nasopharyngeal samples from COVID-19 patients, avoiding any amplification process. The results agree well with those obtained by RT-qPCR or reverse transcription quantitative polymerase chain reaction technique.

Published
2022

139. CASCADE: Naked eye-detection of SARS-CoV-2 using Cas13a and gold nanoparticles

Author

Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Instituto de Salud Carlos III, Comunidad de Madrid, Ministerio de Economía y Competitividad (España), Escalona‐Noguero, Carmen [0000-0003-4365-0911], Pardo, Demian [0000-0002-0251-0704], Castellanos, Milagros [0000-0003-2526-5323], López-Valls, María, Escalona‐Noguero, Carmen, Rodríguez-Díaz, Ciro, Pardo, Demian, Castellanos, Milagros, Milán-Rois, Paula, Martínez-Garay, Carlos, Coloma, Rocío, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Miranda, Rodolfo, Somoza, Álvaro, Sot, Begoña, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Instituto de Salud Carlos III, Comunidad de Madrid, Ministerio de Economía y Competitividad (España), Escalona‐Noguero, Carmen [0000-0003-4365-0911], Pardo, Demian [0000-0002-0251-0704], Castellanos, Milagros [0000-0003-2526-5323], López-Valls, María, Escalona‐Noguero, Carmen, Rodríguez-Díaz, Ciro, Pardo, Demian, Castellanos, Milagros, Milán-Rois, Paula, Martínez-Garay, Carlos, Coloma, Rocío, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Miranda, Rodolfo, Somoza, Álvaro, and Sot, Begoña

Abstract

The COVID-19 pandemic has brought to light the need for fast and sensitive detection methods to prevent the spread of pathogens. The scientific community is making a great effort to design new molecular detection methods suitable for fast point-of-care applications. In this regard, a variety of approaches have been developed or optimized, including isothermal amplification of viral nucleic acids, CRISPR-mediated target recognition, and read-out systems based on nanomaterials. Herein, we present CASCADE (CRISPR/CAS-based Colorimetric nucleic Acid DEtection), a sensing system for fast and specific naked-eye detection of SARS-CoV-2 RNA. In this approach, viral RNA is recognized by the LwaCas13a CRISPR protein, which activates its collateral RNase activity. Upon target recognition, Cas13a cleaves ssRNA oligonucleotides conjugated to gold nanoparticles (AuNPs), thus inducing their colloidal aggregation, which can be easily visualized. After an exhaustive optimization of functionalized AuNPs, CASCADE can detect picomolar concentrations of SARS-CoV-2 RNA. This sensitivity is further increased to low femtomolar (3 fM) and even attomolar (40 aM) ranges when CASCADE is coupled to RPA or NASBA isothermal nucleic acid amplification, respectively. We finally demonstrate that CASCADE succeeds in detecting SARS-CoV-2 in clinical samples from nasopharyngeal swabs. In conclusion, CASCADE is a fast and versatile RNA biosensor that can be coupled to different isothermal nucleic acid amplification methods for naked-eye diagnosis of infectious diseases.

Published
2022

140. Amplification-free detection of SARS-CoV-2 using gold nanotriangles functionalized with oligonucleotides

Author

Consejo Superior de Investigaciones Científicas (España), Conferencia de Rectores de las Universidades Españolas, Comunidad de Madrid, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), European Commission, Banco Santander, Instituto de Salud Carlos III, Caño, Rafael del, García-Mendiola, Tania, García-Nieto, Daniel, Álvaro Bruna, Raquel, Luna, Mónica, Alarcón Iniesta, Hernán, Coloma, Rocío, Rodríguez Diaz, Ciro, Milán-Rois, Paula, Castellanos, Milagros, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Pineda, Teresa, Pariente, Félix, Miranda, Rodolfo, Somoza, Álvaro, Lorenzo, Encarnación, Consejo Superior de Investigaciones Científicas (España), Conferencia de Rectores de las Universidades Españolas, Comunidad de Madrid, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), European Commission, Banco Santander, Instituto de Salud Carlos III, Caño, Rafael del, García-Mendiola, Tania, García-Nieto, Daniel, Álvaro Bruna, Raquel, Luna, Mónica, Alarcón Iniesta, Hernán, Coloma, Rocío, Rodríguez Diaz, Ciro, Milán-Rois, Paula, Castellanos, Milagros, Abreu, Melanie, Cantón, Rafael, Galán, Juan Carlos, Pineda, Teresa, Pariente, Félix, Miranda, Rodolfo, Somoza, Álvaro, and Lorenzo, Encarnación

Abstract

Gold nanotriangles (AuNTs) functionalized with dithiolated oligonucleotides have been employed to develop an amplification-free electrochemical biosensor for SARS-CoV-2 in patient samples. Gold nanotriangles, prepared through a seed-mediated growth method and exhaustively characterized by different techniques, serve as an improved electrochemical platform and for DNA probe immobilization. Azure A is used as an electrochemical indicator of the hybridization event. The biosensor detects either single stranded DNA or RNA sequences of SARS-CoV-2 of different lengths, with a low detection limit of 22.2 fM. In addition, it allows to detect point mutations in SARS-CoV-2 genome with the aim to detect more infective SARS-CoV-2 variants such as Alpha, Beta, Gamma, Delta, and Omicron. Results obtained with the biosensor in nasopharyngeal swab samples from COVID-19 patients show the possibility to clearly discriminate between non-infected and infected patient samples as well as patient samples with different viral load. Furthermore, the results correlate well with those obtained by the gold standard technique RT-qPCR, with the advantage of avoiding the amplification process and the need of sophisticated equipment.

Published
2022

142. Engineering Periodic Dinuclear Lanthanide‐Directed Networks Featuring Tunable Energy Level Alignment and Magnetic Anisotropy by Metal Exchange (Small 22/2022)

Author

Moreno, Daniel, primary, Parreiras, Sofia O., additional, Urgel, José I., additional, Muñiz‐Cano, Beatriz, additional, Martín‐Fuentes, Cristina, additional, Lauwaet, Koen, additional, Valvidares, Manuel, additional, Valbuena, Miguel A., additional, Gallego, José M., additional, Martínez, José I., additional, Gargiani, Pierluigi, additional, Camarero, Julio, additional, Miranda, Rodolfo, additional, and Écija, David, additional

Published
2022
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143. Surface‐Assisted Synthesis of N ‐ Containing π ‐Conjugated Polymers

Author

Sánchez‐Grande, Ana, primary, Urgel, José I., additional, García‐Benito, Inés, additional, Santos, José, additional, Biswas, Kalyan, additional, Lauwaet, Koen, additional, Gallego, José M., additional, Rosen, Johanna, additional, Miranda, Rodolfo, additional, Björk, Jonas, additional, Martín, Nazario, additional, and Écija, David, additional

Published
2022
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144. Synthesis and Characterization of peri ‐Heptacene on a Metallic Surface

Author

Biswas, Kalyan, primary, Urgel, José I., additional, Ajayakumar, M. R., additional, Ma, Ji, additional, Sánchez‐Grande, Ana, additional, Edalatmanesh, Shayan, additional, Lauwaet, Koen, additional, Mutombo, Pingo, additional, Gallego, José M., additional, Miranda, Rodolfo, additional, Jelínek, Pavel, additional, Feng, Xinliang, additional, and Écija, David, additional

Published
2022
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146. Innentitelbild: Synthesis and Characterization of peri‐Heptacene on a Metallic Surface (Angew. Chem. 23/2022)

Author

Biswas, Kalyan, primary, Urgel, José I., additional, Ajayakumar, M. R., additional, Ma, Ji, additional, Sánchez‐Grande, Ana, additional, Edalatmanesh, Shayan, additional, Lauwaet, Koen, additional, Mutombo, Pingo, additional, Gallego, José M., additional, Miranda, Rodolfo, additional, Jelínek, Pavel, additional, Feng, Xinliang, additional, and Écija, David, additional

Published
2022
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147. Inside Cover: Synthesis and Characterization of peri‐Heptacene on a Metallic Surface (Angew. Chem. Int. Ed. 23/2022)

Author

Biswas, Kalyan, primary, Urgel, José I., additional, Ajayakumar, M. R., additional, Ma, Ji, additional, Sánchez‐Grande, Ana, additional, Edalatmanesh, Shayan, additional, Lauwaet, Koen, additional, Mutombo, Pingo, additional, Gallego, José M., additional, Miranda, Rodolfo, additional, Jelínek, Pavel, additional, Feng, Xinliang, additional, and Écija, David, additional

Published
2022
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149. Two-dimensional Kondo lattice in a TaS2 van der Waals heterostructure

Author

Ayani, Cosme G., Pisarra, Michele, Ibarburu, Iván M., Garnica, Manuela, Miranda, Rodolfo, Calleja, Fabián, Martín, Fernando, and de Parga, Amadeo L. Vázquez

Subjects
Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics, Strongly Correlated Electrons (cond-mat.str-el), Mesoscale and Nanoscale Physics (cond-mat.mes-hall), Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, Condensed Matter::Strongly Correlated Electrons, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Abstract

Strongly correlated materials exhibit exotic electronic states arising from the strong correlation between electrons. Dimensionality provides a tuning knob because thinning down to atomic thickness reduces screening effects and enhances electron correlations. In this work, a 2D Kondo lattice has been created by stacking a layer of 1T-TaS2 on a 2H-TaS2 crystal, which are bound by weak van der Waals interactions. By using high-resolution scanning tunnelling spectroscopy and density functional theory, we unambiguously demonstrate the formation of a 2D Kondo lattice from an ensemble of independent Kondo impurities present at higher temperatures. The possibility to create 2D Kondo lattices in van der Waals heterostructures paves the way for the exploration of unconventional metallic, magnetic and superconducting states not present in more standard correlated materials.

Published
2022
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