Resultados globales: 6 registros encontrados en 0.02 segundos.
Artículos, Encontrados 6 registros
Artículos Encontrados 6 registros  
1.
5 p, 445.5 KB Piezoelectric Mimicry of Flexoelectricity / Abdollahi, Amir (Universitat Politècnica de Catalunya) ; Vásquez Sancho, Fabián (Institut Català de Nanociència i Nanotecnologia) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia)
The origin of "giant" flexoelectricity, orders of magnitude larger than theoretically predicted, yet frequently observed, is under intense scrutiny. There is mounting evidence correlating giant flexoelectriclike effects with parasitic piezoelectricity, but it is not clear how piezoelectricity (polarization generated by strain) manages to imitate flexoelectricity (polarization generated by strain gradient) in typical beam-bending experiments, since in a bent beam the net strain is zero. [...]
2018 - 10.1103/PhysRevLett.121.205502
Physical review letters, Vol. 121, Issue 20 (November 2018) , art. 205502  
2.
12 p, 4.9 MB Study of the intracellular nanoparticle-based radiosensitization mechanisms in F98 glioma cells treated with charged particle therapy through synchrotron-based infrared microspectroscopy / Martínez-Rovira, I. (ALBA Laboratori de Llum de Sincrotró) ; Seksek, Olivier (Centre National de la Recherche Scientifique (França)) ; Dokic, I (Heidelberg University Hospital. Heidelberg Ion Beam Therapy Center (HIT). Department of Radiation Oncology) ; Brons, S. (Heidelberg University Hospital. Heidelberg Ion Beam Therapy Center (HIT). Department of Radiation Oncology) ; Abdollahi, Amir (Heidelberg University Hospital. German Cancer Research Center) ; Yousef, Ibraheem (ALBA Laboratori de Llum de Sincrotró)
The use of nanoparticles (NP) as dose enhancers in radiotherapy (RT) is a growing research field. Recently, the use of NP has been extended to charged particle therapy in order to improve the performance in a radioresistant tumors. [...]
2020 - 10.1039/C9AN02350J
Analyst, Vol. 145, Issue 6 (March 2020) , p. 2345-2356  
3.
14 p, 1.0 MB Flexoelectricity in bones / Vásquez Sancho, Fabián (Institut Català de Nanociència i Nanotecnologia) ; Abdollahi, Amir (Universitat Politècnica de Catalunya. Laboratori de Càlcul Numèric) ; Damjanovic, Dragan (Ecole Politechnique Federale de Lausanne) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia)
Bones generate electricity under pressure, and this electromechanical behavior is thought to be essential for bone's self-repair and remodeling properties. The origin of this response is attributed to the piezoelectricity of collagen, which is the main structural protein of bones. [...]
2018 - 10.1002/adma.201705316
Advanced materials, Vol. 30, issue 9 (March 2018) , art. 1705316  
4.
7 p, 2.4 MB Flexoelectric MEMS : Towards an electromechanical strain diode / Bhaskar, Umesh K. (Institut Català de Nanociència i Nanotecnologia) ; Banerjee, N. (University of Twente) ; Abdollahi, Amir (Institut Català de Nanociència i Nanotecnologia) ; Solanas, E. (Lyncée Tec SA) ; Rijnders, G. (University of Twente) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia)
Piezoelectricity and flexoelectricity are two independent but not incompatible forms of electromechanical response exhibited by nanoscale ferroelectrics. Here, we show that flexoelectricity can either enhance or suppress the piezoelectric response of the cantilever depending on the ferroelectric polarity and lead to a diode-like asymmetric (two-state) electromechanical response.
2016 - 10.1039/c5nr06514c
Nanoscale, Vol. 8, Issue 3 (January 2016) , p. 1293-1298  
5.
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  
6.
22 p, 2.4 MB Ferroelectrics as smart mechanical materials / Cordero Edwards, Rohini Kumara (Institut Català de Nanociència i Nanotecnologia) ; Domingo Marimon, Neus (Institut Català de Nanociència i Nanotecnologia) ; Abdollahi, Amir (Universitat Politècnica de Catalunya. Laboratori de Càlcul Numèric) ; Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia)
The mechanical properties of materials are insensitive to space inversion, even when they are crystallographically asymmetric. In practice, this means that turning a piezoelectric crystal upside down or switching the polarization of a ferroelectric should not change its mechanical response. [...]
2017 - 10.1002/adma.201702210
Advanced materials, Vol. 29, issue 37 (Oct. 2017) , art. 1702210  

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