Articles 19 records found  previous11 - 19  jump to record: Search took 0.00 seconds. 
4 p, 238.9 KB Temperature-dependent transition to progressive breakdown in thin silicon dioxide based gate dielectrics / Suñé, Jordi, 1963- (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; American Physical Society
The transition between well-defined soft and hard breakdown modes to progressive breakdown in ultrathin silicon dioxide based dielectrics is studied by means of the statistics of residual time (the time from first breakdown to device failure). [...]
2005 - 10.1063/1.1925316
Applied Physics Letters, Vol. 86, Issue 19 (May 2005) , p. 193502/1-193502/3  
4 p, 503.7 KB Surface behavior of La2/3Ca1/3MnO3 epitaxial thin films / Abad Muñoz, Llibertat (Institut de Ciència de Materials de Barcelona) ; Martínez Perea, Benjamín (Institut de Ciència de Materials de Barcelona) ; Balcells Argemí, Lluís (Institut de Ciència de Materials de Barcelona) ; American Physical Society
The role of the surface layers in La2/3Ca1/3MnO3 magnetic oxide epitaxialthin films is analyzed. We show that the topmost layers do play a very relevant role on the transport properties acting as an insulating barrier. [...]
2005 - 10.1063/1.2133925
Applied Physics Letters, Vol. 87, Issue 21 (November 2005) , p. 212502  
4 p, 257.1 KB Alternating current loss in a cylinder with power-law current-voltage characteristic / Chen, D. -X. (Institució Catalana de Recerca i Estudis Avançats) ; Gu, C. (Tsinghua University. Applied Superconductivity Research Center) ; American Physical Society
The transportac loss Q in a superconducting cylinder of radius a with a power-law current-voltage characteristicE=Ec∣J/Jc∣n as a function of current amplitude Im is numerically calculated for a set of given values of a,Jc, and frequency f at n=5, 10, 20, and 30. [...]
2005 - 10.1063/1.1947912
Applied Physics Letters, Vol. 86, Issue 25 (Juny 2005) , p. 252504  
4 p, 293.8 KB Giant and time-dependent magnetocaloric effect in high-spin molecular magnets / Torres Canals, Francisco (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Hernández, J. M. (Universitat de Barcelona. Departamento Fı́sica Fonamental) ; Bohigas i Janoher, Xavier (Universitat Politècnica de Catalunya. Departament Física i Enginyeria Nuclear) ; Tejada, J. (Universitat de Barcelona. Departament Física Fonamental) ; American Physical Society
We have measured and calculated the magnetocaloric effect in macroscopic samples of oriented high-spin molecular clusters like Mn12 and Fe8 as a function of the temperature and both the intensity and the sweeping rate of the applied magnetic field. [...]
2000 - 10.1063/1.1325393
Applied Physics Letters, Vol. 77, Num. 20 (September 2000) , p. 3248-3250  
4 p, 227.5 KB Measuring electrical current during scanning probe oxidation / Pérez Murano, Francesc (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Martín Olmos, Cristina (Institut de Microelectrònica de Barcelona (IMB-CNM)) ; Barniol i Beumala, Núria (Universitat Autònoma de Barcelona. Departament de Enginyeria Electrònica) ; Kuramochi, H. (Nanotechnology Research Institute (Ibaraki, Japó)) ; Yokoyama, H. (Nanotechnology Research Institute (Ibaraki, Japó)) ; Dagata, J. A. (National Institute of Standards and Technology (Gaithersburg, Estats Units d'Amèrica)) ; American Physical Society
Electrical current is measured during scanning probe oxidation by performing force versus distance curves under the application of a positive sample voltage. It is shown how the time dependence of the current provides information about the kinetics of oxide growth under conditions in which the tip–surface distance is known unequivocally during current acquisition. [...]
2003 - 10.1063/1.1572480
Applied Physics Letters, Vol. 82, Issue 18 (April 2003) , p. 3086-3088  
4 p, 494.5 KB Nondestructive thickness measurement of biological layers at the nanoscale by simultaneous topography and capacitance imaging / Casuso, Ignacio (Universitat de Barcelona. Departament d’Electrònica) ; Fumagalli, Laura (Universitat de Barcelona. Departament d’Electrònica) ; Gomila, Gabriel (Universitat de Barcelona. Departament d’Electrònica) ; Padrós, Esteve (Universitat Autònoma de Barcelona. Departament de Bioquímica i Biologia Molecular) ; American Physical Society
Nanoscale capacitance images of purple membrane layers are obtained simultaneously to topography in a nondestructive manner by operating alternating current sensing atomic force microscopy in jumping mode. [...]
2007 - 10.1063/1.2767979
Applied Physics Letters, Vol. 91, Issue 6 (August 2007) , p. 063111/1-063111/3  
4 p, 341.8 KB Single DNA molecule detection in an optical trap using surface-enhanced Raman scattering / Rao, Satish (Institut de Ciencies Fotòniques (Castelldefels, Catalunya)) ; Raj, Saurabh (Institut de Ciencies Fotòniques (Castelldefels, Catalunya)) ; Balint, Stefan (Institut de Ciencies Fotòniques (Castelldefels, Catalunya)) ; Bardina Fons, Carlota (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia) ; Campoy Sánchez, Susana (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia) ; Llagostera Casas, Montserrat (Universitat Autònoma de Barcelona. Departament de Genètica i de Microbiologia) ; Petrov, Dmitri (Institut de Ciencies Fotòniques (Castelldefels, Catalunya)) ; American Physical Society
Raman spectra from single DNA molecules in their natural aqueous environment are presented. A DNA molecule that is anchored between two optically trapped dielectric beads is suspended in a solution with nanosized silvercolloid particles. [...]
2010 - 10.1063/1.3431628
Applied Physics Letters, Vol. 96, Issue 21 (May 2010) , p. 213701/1-213701/3  
16 p, 821.2 KB Conociendo el efecto Zenón cuántico en experimentos contrafácticos : una aproximación filosófica / Gherab Martín, Karim (Harvard University. Department of Philosophy) ; Sánchez Ovcharov, Carmen (Universidad Complutense de Madrid. Departamento de Lógica y Filosofía de la Ciencia)
El presente artículo describe una serie de experimentos cuánticos que implican medidas contrafácticas. Para lograr procesos contrafácticos completos es necesario combinar dichos dispositivos experimentales contrafácticos con un fenómeno físico llamado “efecto Zenón cuántico”. [...]
This article describes several quantum experiments that imply counterfactual measurements. These setups need to be combined with so called the “quantum Zeno effect” in order to reach complete counterfactual processes. [...]

Ontology studies, Núm. 10 (2010) , p. 115-130  
21 p, 74.4 KB Sufrimiento competitivo y rendimiento en deportes de resistencia / Bueno García, Javier (Universitat Autònoma de Barcelona. Grup d’Investigació en Estrès i Salut) ; Capdevila Ortís, Lluís (Universitat Autònoma de Barcelona. Departament de Psicologia Bàsica, Evolutiva i de l'Educació) ; Fernández-Castro, Jordi (Universitat Autònoma de Barcelona. Departament de Psicologia Bàsica, Evolutiva i de l'Educació)
La literatura que trata de relacionar aspectos precompetitivos como la ansiedad o el estado de ánimo con el rendimiento, en deportes de resistencia, es muy extensa. Sin embargo, las medidas precompetitivas han mostrado importantes inconsistencias en los resultados debido a que no tienen en cuenta las fluctuaciones en la respuesta emocional y en los procesos psicológicos del atleta una vez comenzada la competición (Hammersmeister y Burton, 1995). [...]
Research which attempts to relate precompetitive factors like anxiety or mood state with performance in endurance sports is very extensive. However, precompetitive measurements have showed important incongruence in their results because they don’t bear in mind the changes in the emotional response and in the psychological processes of the athlete when the competition has begun (Hammersmeister y Burton, 1995). [...]

Revista de psicología del deporte, Vol. 11, Núm. 2 (2002) , p. 209-226  

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