Results 61 to 70 of about 10,921 (266)

Lateral vibration effects in atomic-scale friction [PDF]

, 2014
The influence of lateral vibrations on the stick-slip motion of a nanotip elastically pulled on a flat crystal surface is studied by atomic force microscopy (AFM) measurements on a NaCl(001) surface in ultra-high vacuum.
Fajardo, O. Y., Gnecco, E., Mazo, J. J., Meyer, E., Roth, R.   +4 more
core   +2 more sources

Nanomedical research and development in Spain: improving the treatment of diseases from the nanoscale

Frontiers in Bioengineering and Biotechnology, 2023
The new and unique possibilities that nanomaterials offer have greatly impacted biomedicine, from the treatment and diagnosis of diseases, to the specific and optimized delivery of therapeutic agents.
Paula Fernández-Gómez, Carmen Pérez de la Lastra Aranda, Carmen Pérez de la Lastra Aranda, Carlota Tosat-Bitrián, Carlota Tosat-Bitrián, Jesús Alejandro Bueso de Barrio, Sebastián Thompson, Begoña Sot, Begoña Sot, Begoña Sot, Gorka Salas, Gorka Salas, Álvaro Somoza, Álvaro Somoza, Ana Espinosa, Ana Espinosa, Milagros Castellanos, Valle Palomo, Valle Palomo, Valle Palomo   +19 more
doaj   +1 more source

Spatially resolved electronic inhomogeneities of graphene due to subsurface charges

, 2011
We probe the local inhomogeneities in the electronic properties of exfoliated graphene due to the presence of charged impurities in the SiO2 substrate using a combined scanning tunneling and electrostatic force microscope.
Agraït, Nicolás, Castellanos-Gomez, Andres, Rubio-Bollinger, Gabino, Smit, Roel H. M.   +3 more
core   +1 more source

Band structure of topological insulators from noise measurements in tunnel junctions [PDF]

, 2015
The unique properties of spin-polarized surface or edge states in topological insulators (TIs) make these quantum coherent systems interesting from the point of view of both fundamental physics and their implementation in low power spintronic devices ...
Aliev, Farkhad G., Cascales, Juan Pedro, Chang, Cui-Zu, Guerrero, Ruben, Katmis, Ferhat, Martınez, Isidoro, Moodera, Jagadeesh S.   +6 more
core   +2 more sources

Reduction‐Induced C─C Cleavage and Site‐Specific Hydrogenation of a Highly Strained Bilayer Spironanographene

Angewandte Chemie, EarlyView.
Single‐crystal X‐ray diffraction analysis revealed a reduction‐induced ring cleavage with subsequent hydrogenation of a bilayer spironanographene upon treatment with alkali metals. Density Functional Theory (DFT) calculations suggested localized spin density on the C‐atom at the central spirocycle upon one‐fold reduction, facilitating a site‐specific ...
Juan Lión‐Villar, Herdya S. Torchon, Yikun Zhu, Zheng Wei, Jesús M. Fernández‐García, Israel Fernández, Marina A. Petrukhina, Nazario Martín   +7 more
wiley   +2 more sources

La comunicación pública de ámbitos científicos y tecnológicos emergentes. Problemas y retos en el caso de la nanotecnología

Arbor: Ciencia, Pensamiento y Cultura, 2014
Este trabajo se centra en la comprensión y comunicación pública de la nanociencia y la nanotecnología. La preocupación por las actitudes y los niveles de conocimiento público sobre nanociencia y nanotecnología ha llevado en diversos países a estudiar de ...
Javier Gómez-Ferri, José Manuel de Cózar Escalante, Ramón Llopis-Goig   +2 more
doaj   +1 more source

Realization of macroscopic ratchet effect based on nonperiodic and uneven potentials

Scientific Reports, 2021
Ratchet devices allow turning an ac input signal into a dc output signal. A ratchet device is set by moving particles driven by zero averages forces on asymmetric potentials.
V. Rollano, A. Gomez, A. Muñoz-Noval, M. Velez, M. C. de Ory, M. Menghini, E. M. Gonzalez, J. L. Vicent   +7 more
doaj   +1 more source

Atomic Configuration of Nitrogen Doped Single-Walled Carbon Nanotubes [PDF]

, 2014
Having access to the chemical environment at the atomic level of a dopant in a nanostructure is crucial for the understanding of its properties. We have performed atomically-resolved electron energy-loss spectroscopy to detect individual nitrogen dopants
Annick Loiseau, Arenal R., Arenal R., Arenal R., Ayala P., Ayala P., Bangert U., Bangert U., Bhattacharyya S., Bittencourt C., Chris P. Ewels, Colliex C., Czerw R., Deng D., Egerton R. F., Ewels C. P., Ghosh K., Glerup M., Hua W., Jeanguillaume C., Katia March, Krivanek O. L., Krivanek O. L., Krivanek O. L., Krstic V., Lin H., Lin H., Mathieu Kociak, Meyer J. C., Nicholls R., Odile Stéphan, Pennycook S. J., Ramasse Q., Raul Arenal, Suenaga K., Suenaga K., Suenaga K., Susi T., Tison Y., Trasobares S., Warner J. H., Xavier Rocquefelte, Zhao L.   +42 more
core   +2 more sources

Optical Tweezers to Force Information out of Biological and Synthetic Systems One Molecule at a Time

Biophysica, 2022
Over the last few decades, in vitro single-molecule manipulation techniques have enabled the use of force and displacement as controlled variables in biochemistry. Measuring the effect of mechanical force on the real-time kinetics of a biological process
Rebeca Bocanegra, María Ortiz-Rodríguez, Ismael Plaza Garcia-Abadillo, Carlos R-Pulido, Borja Ibarra   +4 more
doaj   +1 more source

Elastic properties of freely suspended MoS2 nanosheets

, 2012
We study the elastic deformation of few layers (5 to 25) thick freely suspended MoS2 nanosheets by means of a nanoscopic version of a bending test experiment, carried out with the tip of an atomic force microscope. The Young's modulus of these nanosheets
Ayari, Castellanos-Gomez, Chen, Eda, Fan, Feldman, Gorbachev, Gómez-Navarro, Han, Ishigami, Kim, Kim, Komaragiri, Kunz, Lee, Lee, Lee, Li, Li, Lovell, Matte, Meitl, Moreno-Moreno, Moser, Nemes-Incze, Novoselov, Podzorov, Poot, Radisavljevic, Sader, Smith, Song, Splendiani, Suk, Timoshenko, Timoshenko, Turchanin, Witkamp, Xiong   +38 more
core   +1 more source