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Resultats globals: 40 registres trobats en 0.03 segons.
Articles, 39 registres trobats
Documents de recerca, 1 registres trobats
Articles 39 registres trobats  1 - 10següentfinal  anar al registre:
1.
9 p, 1.8 MB Real-time microscopy of the relaxation of a glass / Ruiz Ruiz, Marta (Institut Català de Nanociència i Nanotecnologia) ; Vila Costa, Ana (Universitat Autònoma de Barcelona. Departament de Física) ; Bar, Tapas (Institut Català de Nanociència i Nanotecnologia) ; Rodríguez Tinoco, Cristian (Institut Català de Nanociència i Nanotecnologia) ; González Silveira, Marta (Universitat Autònoma de Barcelona. Departament de Física) ; Plaza, José A. (Institut de Microelectrònica de Barcelona) ; Alcalá, Jorge (Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica) ; Fraxedas, Jordi (Institut Català de Nanociència i Nanotecnologia) ; Rodríguez-Viejo, Javier (Universitat Autònoma de Barcelona. Departament de Física)
The understanding of the dynamics of a glass above its devitrification temperature remains incomplete. Here, we build a spatio-temporal map of the relaxation dynamics of a highly stable glass into its supercooled liquid using real-time atomic force microscopy imaging. [...]
2023 - 10.1038/s41567-023-02125-0
Nature Physics, Vol. 19, Issue 10 (October 2023) , p. 1509-1515  
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2.
11 p, 9.3 MB Effects of lateral size, thickness, and stabilizer concentration on the cytotoxicity of defect-free graphene nanosheets : implications for biological applications / Hu, Chen-Xia (University of Manchester. Department of Chemistry) ; Read, Oliver (University of Manchester. Department of Chemistry) ; Shin, Yuyoung (University of Manchester. Department of Chemistry) ; Chen, Yingxian (University of Manchester. Nanomedicine Lab) ; Wang, Jingjing (University of Manchester. Department of Chemistry) ; Boyes, Matthew (University of Manchester. Department of Chemistry) ; Zeng, Niting (University of Manchester. Department of Chemistry) ; Panigrahi, Adyasha (University of Manchester. Department of Chemistry) ; Kostarelos, Kostas (Institut Català de Nanociència i Nanotecnologia) ; Larrosa, Igor (University of Manchester. Department of Chemistry) ; Vranic, Sandra (University of Manchester. Nanomedicine Lab) ; Casiraghi, Cinzia (University of Manchester. Department of Chemistry)
In this work, we apply liquid cascade centrifugation to highly concentrated graphene dispersions produced by liquid-phase exfoliation in water with an insoluble bis-pyrene stabilizer to obtain fractions containing nanosheets with different lateral size distributions. [...]
2022 - 10.1021/acsanm.2c02403
ACS applied nano materials, Vol. 5, issue 9 (Sep. 2022) , p. 12626-12636  
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3.
10 p, 871.3 KB Intermittent Hypoxia Mimicking Sleep Apnea Increases Passive Stiffness of Myocardial Extracellular Matrix. A Multiscale Study / Farré, Núria (Universitat Autònoma de Barcelona. Departament de Medicina) ; Otero, Jorge (Universitat de Barcelona) ; Falcones, Bryan (Universitat de Barcelona) ; Torres, Marta (Hospital Clínic i Provincial de Barcelona) ; Jorba, Ignasi (Universitat de Barcelona) ; Gozal, David (University of Missouri School of Medicine) ; Almendros, Isaac (Universitat de Barcelona) ; Farré, Ramon (Universitat de Barcelona) ; Navajas, Daniel (Universitat de Barcelona)
Background: Tissue hypoxia-reoxygenation characterizes obstructive sleep apnea (OSA), a very prevalent respiratory disease associated with increased cardiovascular morbidity and mortality. Experimental studies indicate that intermittent hypoxia (IH) mimicking OSA induces oxidative stress and inflammation in heart tissue at the cell and molecular levels. [...]
2018 - 10.3389/fphys.2018.01143
Frontiers in physiology, Vol. 9 (august 2018)  
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4.
14 p, 2.4 MB Shedding plasma membrane vesicles induced by graphene oxide nanoflakes in brain cultured astrocytes / Musto, Mattia (Scuola Internazionale Superiore di Studi Avanzati (Trieste, Itàlia)) ; Parisse, Pietro (ELETTRA Synchrotron Light Source) ; Pachetti, Maria (ELETTRA Synchrotron Light Source) ; Memo, Christian (Scuola Internazionale Superiore di Studi Avanzati (Trieste, Itàlia)) ; Di Mauro, Giuseppe. (Scuola Internazionale Superiore di Studi Avanzati) ; Ballesteros, Belén (Institut Català de Nanociència i Nanotecnologia) ; Lozano, Neus (Institut Català de Nanociència i Nanotecnologia) ; Kostarelos, Kostas (Institut Català de Nanociència i Nanotecnologia) ; Casalis, Loredana (ELETTRA Synchrotron Light Source) ; Ballerini, Laura (Scuola Internazionale Superiore di Studi Avanzati (Trieste, Itàlia))
Microvesicles (MVs) generated and released by astrocytes, the brain prevalent cells, crucially contribute to intercellular communication, representing key vectorized systems able to spread and actively transfer signaling molecules from astrocytes to neurons, ultimately modulating target cell functions. [...]
2021 - 10.1016/j.carbon.2021.01.142
Carbon, Vol. 176 (May 2021) , p. 458-469  
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5.
14 p, 1012.8 KB Quantification of nanomechanical properties of surfaces by higher harmonic monitoring in amplitude modulated AFM imaging / Gramazio, Federico (Institut Català de Nanociència i Nanotecnologia) ; Lorenzoni, Matteo (Institut de Microelectrònica de Barcelona) ; Pérez Murano, Francesc (Institut de Microelectrònica de Barcelona) ; Evangelio Araujo, Laura (Institut Català de Nanociència i Nanotecnologia) ; Fraxedas, Jordi (Institut Català de Nanociència i Nanotecnologia)
The determination of nanomechanical properties is an intensive topic of study in several fields of nanophysics, from surface and materials science to biology. At the same time, amplitude modulation force microscopy is one of the most established techniques for nanoscale characterization. [...]
2018 - 10.1016/j.ultramic.2018.01.013
Ultramicroscopy, Vol. 187 (April 2018) , p. 20-25  
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6.
5 p, 526.4 KB Synthesis of polydopamine at the femtoliter scale and confined fabrication of Ag nanoparticles on surfaces / Guardingo Melián, Mireia (Institut Català de Nanociència i Nanotecnologia) ; Esplandiu Egido, Maria José (Institut Català de Nanociència i Nanotecnologia) ; Ruiz-Molina, Daniel (Institut Català de Nanociència i Nanotecnologia)
Nanoscale polydopamine motives are fabricated on surfaces by deposition of precursor femtolitre droplets with an AFM tip and used as confined reactors to fabricate Ag nanoparticles patterns by in-situ reduction of an Ag+ salt.
2014 - 10.1039/c4cc02500h
Chemical communications, Vol. 50 issue 83 (2014) , p. 12548-12551  
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7.
7 p, 1.3 MB Dissolution of brucite and the (001) surface at neutral pH : In situ atomic force microscopy observations / Kudoh, Yuriko (The University of Tokyo. Department of Earth and Planetary Science) ; Kameda, Jun (The University of Tokyo. Department of Earth and Planetary Science) ; Kogure, Toshihiro (The University of Tokyo. Department of Earth and Planetary Science)
The dissolution of brucite, Mg(OH), on the (001) surface was investigated using in situ atomic force microscopy in solutions at near-neutral pH. Dissolution proceeded by the formation of crystallographically oriented triangular etch pits with monolayer step and expansion of the pits. [...]
2006 - 10.1346/CCMN.2006.0540506
Clays and Clay Minerals, Vol. 54, Núm. 5 (2006) , p. 598-604  
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8.
9 p, 1.7 MB On the kinetics of ion exchange in phlogopite - An in situ AFM study / Aldushin, Kirill (Ludwig-Maximilians-Universität. Department für Geo- und Umweltwissenschaften. Sektion Kristallographie) ; Jordan, Guntram (Ludwig-Maximilians-Universität. Department für Geo- und Umweltwissenschaften. Sektion Kristallographie) ; Aldushina, Elena (Ruhr-Universität Bochum. Institut für Geologie Mineralogie und Geophysik) ; Schmahl, Wolfgang W. (Ludwig-Maximilians-Universität. Department für Geo- und Umweltwissenschaften. Sektion Kristallographie)
The kinetics of cation exchange in phlogopite have been studied in situ by hydrothermal atomic force microscopy (HAFM). The exchange of interlayer K by octylammonium ions caused an increase in the interlayer distance and the formation of reaction fronts which can be locally resolved by AFM. [...]
2007 - 10.1346/CCMN.2007.0550401
Clays and Clay Minerals, Vol. 55, Núm. 4 (2007) , p. 339-347  
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9.
37 p, 448.3 KB Leaves of isoprene-emitting tobacco plants maintain PSII stability at high temperatures / Pollastri, Susanna (Institute for Sustainable Plant Protection (Florència, Itàlia)) ; Jorba, Ignasi (Institut de Bioenginyeria de Catalunya) ; Hawkins, Timothy J. (Durham University. Department of Biosciences) ; Llusià Benet, Joan (Centre de Recerca Ecològica i d'Aplicacions Forestals) ; Michelozzi, Marco (Istituto di Bioscienze e Biorisorse (Florència, Itàlia)) ; Navajas, Daniel (Institut de Bioenginyeria de Catalunya) ; Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals) ; Hussey, Patrick J. (Durham University. Department of Biosciences) ; Knight, Marc R. (Durham University. Department of Biosciences) ; Loreto, Francesco (Università degli Studi di Napoli Federico II. Dipartimenti di Biologia)
At high temperatures, isoprene-emitting plants display a higher photosynthetic rate and a lower nonphotochemical quenching (NPQ) compared with nonemitting plants. The mechanism of this phenomenon, which may be very important under current climate warming, is still elusive. [...]
2019 - 10.1111/nph.15847
The new phytologist, Vol. 223, issue 3 (Aug. 2019) , p. 1307-1318  
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10.
6 p, 937.0 KB Converse flexoelectricity yields large piezoresponse force microscopy signals in non-piezoelectric materials / Abdollahi, Amir (Universitat Politècnica de Catalunya) ; Domingo Marimon, Neus (Institut Català de Nanociència i Nanotecnologia) ; Arias, Irene (Universitat Politècnica de Catalunya) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia)
Converse flexoelectricity is a mechanical stress induced by an electric polarization gradient. It can appear in any material, irrespective of symmetry, whenever there is an inhomogeneous electric field distribution. [...]
2019 - 10.1038/s41467-019-09266-y
Nature communications, Vol. 10 (March 2019) , art. 1266  
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Articles : 39 registres trobats   1 - 10següentfinal  anar al registre:
Documents de recerca 1 registres trobats  
1.
169 p, 9.1 MB Mechanical and electromechanical properties of ferroelectrics at the nanoscale studied by Atomic Force Microscopy / Stefani, Christina ; Domingo Marimon, Neus, dir. ; Catalan, Gustau, dir. ; Sort Viñas, Jordi, dir.
La microscòpia de força piezoresposta (PFM) és una eina poderosa per a la caracterització electromecànica de materials ferroelèctrics. En aquest mode de microscòpia de força atòmica (AFM), una tensió de corrent alterna externa excita la mostra i es mesura la seva resposta piezoelèctrica, proporcionant informació sobre la magnitud, l'orientació i el signe de la polarització ferroelèctrica. [...]
La microscopía de fuerza de respuesta piezoeléctrica (PFM) es una poderosa herramienta para la caracterización electromecánica de materiales ferroeléctricos. En este modo de microscopía de fuerza atómica (AFM), un voltaje de CA externo excita la muestra y se mide su respuesta piezoeléctrica, proporcionando información sobre la magnitud, la orientación y el signo de la polarización ferroeléctrica. [...]
Piezoresponse force microscopy (PFM) is a powerful tool for the electromechanical characterization of ferroelectric materials. In this atomic force microscopy (AFM) mode, an external ac voltage excites the sample and its piezoelectric response is measured, providing information about the magnitude, orientation and sign of ferroelectric polarization. [...]
2022  
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