Resultados globales: 26 registros encontrados en 0.02 segundos.
Artículos, Encontrados 23 registros
Documentos de investigación, Encontrados 3 registros
Artículos Encontrados 23 registros  1 - 10siguientefinal  ir al registro:
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.
15 p, 1.3 MB Photoflexoelectric effect in halide perovskites / Shu, Longlong (Nanchang University. School of Materials Science and Engineering) ; Ke, Shanming (Nanchang University. School of Materials Science and Engineering) ; Fei, Linfeng (Nanchang University. School of Materials Science and Engineering) ; Huang, Wenbin (Chongqing University) ; Wang, Zhiguo (Chongqing University) ; Gong, Jinhui (Nanchang University. School of Materials Science and Engineering) ; Jiang, Xiaoning (North Carolina State University. Department of Mechanical and Aerospace Engineering) ; Wang, Li (Nanchang University. School of Materials Science and Engineering) ; Li, Fei (Xi'an Jiao Tong University) ; Lei, Shuijin (Nanchang University. School of Materials Science and Engineering) ; Rao, Zhenggang (Nanchang University. School of Materials Science and Engineering) ; Zhou, Yangbo (Nanchang University. School of Materials Science and Engineering) ; Zheng, Ren-Kui (Nanchang University. School of Materials Science and Engineering) ; Yao, Xi (Xi'an Jiao Tong University) ; Wang, Yu (Nanchang University. School of Materials Science and Engineering) ; Stengel, Massimiliano (Institut de Ciència de Materials de Barcelona) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia)
Harvesting environmental energy to generate electricity is a key scientific and technological endeavour of our time. Photovoltaic conversion and electromechanical transduction are two common energy-harvesting mechanisms based on, respectively, semiconducting junctions and piezoelectric insulators. [...]
2020 - 10.1038/s41563-020-0659-y
Nature materials, Vol. 19, Issue 6 (June 2020) , p. 605-609  
3.
19 p, 1.1 MB Temperature-independent giant dielectric response in transitional BaTiO3 thin films / Everhardt, Arnoud S. (Zernike Institute for Advanced Materials) ; Denneulin, Thibaud (Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons) ; Grünebohm, Anna (Ruhr-Universität Bochum) ; Shao, Yu-Tsun (University of Illinois. Department of Materials Science and Engineering) ; Ondrejkovic, Petr (Czech Academy of Sciences) ; Zhou, Silang (University of Groningen) ; Domingo Marimon, Neus (Institut Català de Nanociència i Nanotecnologia) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia) ; Hlinka, Jiri (Czech Academy of Sciences) ; Zuo, Jian-Min (University of Illinois. Department of Materials Science and Engineering) ; Matzen, Sylvia (Université Paris-Saclay) ; Noheda, Beatriz (Rijksuniversiteit Groningen. CogniGron Center)
Ferroelectric materials exhibit the largest dielectric permittivities and piezoelectric responses in nature, making them invaluable in applications from supercapacitors or sensors to actuators or electromechanical transducers. [...]
2020 - 10.1063/1.5122954
Applied physics reviews, Vol. 7, Issue 1 (March 2020) , art. 11402  
4.
10 p, 3.8 MB Investigation of The Cellular Response to Bone Fractures : Evidence for Flexoelectricity / Núñez Toldrà, Raquel (Institut Català de Nanociència i Nanotecnologia) ; Vásquez Sancho, Fabián (Institut Català de Nanociència i Nanotecnologia) ; Barroca, Nathalie (Institut Català de Nanociència i Nanotecnologia) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia)
The recent discovery of bone flexoelectricity (strain-gradient-induced electrical polarization) suggests that flexoelectricity could have physiological effects in bones, and specifically near bone fractures, where flexoelectricity is theoretically highest. [...]
2020 - 10.1038/s41598-019-57121-3
Scientific reports, Vol. 10 (January 2020) , art. 254  
5.
Ferroelectric Domain Walls in PbTiO3 Are Effective Regulators of Heat Flow at Room Temperature / Langenberg, Eric (Universidade de Santiago de Compostela. Departmento de Química-Física) ; Saha, Dipanjan (Carnegie Mellon University. Mechanical Engineering Department) ; Holtz, Megan E. (Cornell University) ; Wang, Jian-Jun (Pennsylvania State University. Department of Materials Science and Engineering) ; Bugallo, David (Universidade de Santiago de Compostela. Departmento de Química-Física) ; Ferreiro Vila, Elias (Universidade de Santiago de Compostela. Departmento de Química-Física) ; Paik, Hanjong (Cornell University. Department of Materials Science and Engineering) ; Hanke, Isabelle (Leibniz-Institut für Kristallzüchtung) ; Ganschow, Steffen (Leibniz-Institut für Kristallzüchtung) ; Muller, David A. (Cornell University) ; Chen, Long-Qing (Pennsylvania State University. Department of Materials Science and Engineering) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia) ; Domingo Marimon, Neus (Institut Català de Nanociència i Nanotecnologia) ; Malen, Jonathan (Carnegie Mellon University. Mechanical Engineering Department) ; Schlom, Darrell G. (Kavli Institute at Cornell for Nanoscale Science) ; Rivadulla, Francisco (Universidade de Santiago de Compostela. Departmento de Química-Física)
Achieving efficient spatial modulation of phonon transmission is an essential step on the path to phononic circuits using "phonon currents". With their intrinsic and reconfigurable interfaces, domain walls (DWs), ferroelectrics are alluring candidates to be harnessed as dynamic heat modulators. [...]
2019 - 10.1021/acs.nanolett.9b02991
Nano letters, Vol. 19, Issue 11 (November 2019) , p. 7901-7907  
6.
16 p, 4.3 MB Disentangling Highly Asymmetric Magnetoelectric Effects in Engineered Multiferroic Heterostructures / Menéndez Dalmau, Enric (Universitat Autònoma de Barcelona. Departament de Física) ; Sireus, Verònica (Universitat Autònoma de Barcelona. Departament de Física) ; Quintana Romero, Alberto (Universitat Autònoma de Barcelona. Departament de Física) ; Fina Martínez, Ignasi (Institut de Ciència de Materials de Barcelona) ; Casals Montserrat, Blai (Institut de Ciència de Materials de Barcelona) ; Cichelero, Rafael (Institut de Ciència de Materials de Barcelona) ; Kataja, Mikko (Institut de Ciència de Materials de Barcelona) ; Stengel, Massimiliano (Institut de Ciència de Materials de Barcelona) ; Herranz Casabona, Gervasi (Institut de Ciència de Materials de Barcelona) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia) ; Baró, M. D. (Universitat Autònoma de Barcelona. Departament de Física) ; Suriñach, Santiago (Suriñach Cornet) (Universitat Autònoma de Barcelona. Departament de Física) ; Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
One of the main strategies to control magnetism by voltage is the use of magnetostrictive-piezoelectric hybrid materials, such as ferromagnetic-ferroelectric heterostructures. When such heterostructures are subjected to an electric field, piezostrain-mediated effects, electronic charging, and voltage-driven oxygen migration (magnetoionics) may simultaneously occur, making the interpretation of the magnetoelectric effects not straightforward and often leading to misconceptions. [...]
2019 - 10.1103/PhysRevApplied.12.014041
Physical review applied, Vol. 12, Issue 1 (July 2019) , art. 14041  
7.
36 p, 830.9 KB Giant bulk photovoltaic effect in solar cell architectures with ultra-wide bandgap Ga2O3 transparent conducting electrodes / Pérez Tomàs, Amador (Institut Català de Nanociència i Nanotecnologia) ; Chikoidze, Ekaterine (Université de Versailles Saint Quentin en Yvelines - CNRS) ; Dumont, Yves (Université de Versailles Saint Quentin en Yvelines - CNRS) ; Jennings, M.R. (Swansea University) ; Russell, Stephen A. O. (University of Warwick) ; Vales Castro, Pablo (Institut Català de Nanociència i Nanotecnologia) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia) ; Lira Cantú, Mónica (Institut Català de Nanociència i Nanotecnologia) ; Ton-That, C. (University of Technology Sydney) ; Teherani, Féréchteh Hosseini (Nanovation) ; Sandana, Vinod E. (Nanovation) ; Bove, Philippe (Nanovation) ; Rogers, David J. (Nanovation)
The use of ultra-wide bandgap transparent conducting beta gallium oxide (β-GaO) thin films as electrodes in ferroelectric solar cells is reported. In a new material structure for energy applications, we report a solar cell structure (a light absorber sandwiched in between two electrodes - one of them - transparent) which is not constrained by the Shockley-Queisser limit for open-circuit voltage (V) under typical indoor light. [...]
2019 - 10.1016/j.mtener.2019.100350
Materials today energy, Vol. 14 (December 2019) , art. 100350  
8.
17 p, 1.1 MB Flexoelectricity in antiferroelectrics / Vales Castro, Pablo (Institut Català de Nanociència i Nanotecnologia) ; Roleder, Krystian (University of Silesia in Katowice. Institute of Physics) ; Zhao, Lei (Tsinghua University) ; Li, Jing-Feng (Tsinghua University) ; Kajewski, Dariusz (University of Silesia in Katowice. Institute of Physics) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia)
Flexoelectricity (coupling between polarization and strain gradients) is a property of all dielectric materials that has been theoretically known for decades, but only relatively recently it has begun to attract experimental attention. [...]
2018 - 10.1063/1.5044724
Applied physics letters, Vol. 113, Issue 13 (September 2018) , art. 132903  
9.
8 p, 3.4 MB Periodicity-doubling cascades : direct observation in ferroelastic materials / Everhardt, Arnoud S. (Zernike Institute for Advanced Materials) ; Damerio, Silvia (Zernike Institute for Advanced Materials) ; Zorn, Jacob A. (Pennsylvania State University. Department of Materials Science and Engineering) ; Zhou, Silang (Zernike Institute for Advanced Materials) ; Domingo Marimon, Neus (Institut Català de Nanociència i Nanotecnologia) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia) ; Salje, Ekhard K. H. (University of Cambridge) ; Chen, Long-Qing (Pennsylvania State University. Department of Materials Science and Engineering) ; Noheda, Beatriz (Rijksuniversiteit Groningen. CogniGron Center)
Very sensitive responses to external forces are found near phase transitions. However, transition dynamics and preequilibrium phenomena are difficult to detect and control. We have observed that the equilibrium domain structure following a phase transition in ferroelectric and ferroelastic BaTiO3 is attained by halving of the domain periodicity multiple times. [...]
2019 - 10.1103/PhysRevLett.123.087603
Physical review letters, Vol. 123, issue 8 (August 2019) , art. 87603  
10.
22 p, 452.7 KB A solar transistor and photoferroelectric memory / Pérez Tomàs, Amador (Institut Català de Nanociència i Nanotecnologia) ; Lima, F. Anderson S. (Institut Català de Nanociència i Nanotecnologia) ; Billon, Quentin (Institut Català de Nanociència i Nanotecnologia) ; Shirley, Ian (Institut Català de Nanociència i Nanotecnologia) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia) ; Lira Cantú, Mónica (Institut Català de Nanociència i Nanotecnologia)
This study presents a new self-powered electronic transistor concept "the solar transistor. " The transistor effect is enabled by the functional integration of a ferroelectric-oxide thin film and an organic bulk heterojunction. [...]
2018 - 10.1002/adfm.201707099
Advanced functional materials, Vol. 28, issue 17 (April, 2018) , art. 1707099  

Artículos : Encontrados 23 registros   1 - 10siguientefinal  ir al registro:
Documentos de investigación Encontrados 3 registros  
1.
129 p, 3.7 MB Flexoelectricity in biomaterials / Vásquez Sancho, Fabián, autor. ; Catalan Bernabé, Gustau, supervisor acadèmic. ; Sort Viñas, Jordi, supervisor acadèmic. ; Universitat Autònoma de Barcelona. Departament de Física. ; Universitat Autònoma de Barcelona. Institut Català de Nanociència i Nanotecnologia (ICN2)
La flexoelectricidad es la capacidad de los materiales para generar electricidad al deformarse de forma no homogénea. Es una propiedad de todos los materiales y, en principio, posible que existiera en biomateriales. [...]
Flexoelectricity is the ability of materials to generate electricity upon being bent, or, more generally, upon being inhomogeneously deformed. It is a property that is allowed by symmetry in all materials and, therefore, it was in principle possible that it existed in biomaterials -one precedent existed for their observation in inner-ear stereocilia, in fact, pointing to its importance for acousto-electric transduction in mammalian hearing. [...]

[Bellaterra] : Universitat Autònoma de Barcelona, 2018.  
2.
117 p, 2.0 MB Effect of flexoelectricity on the nano-mechanical properties of ferroelectrics / Kumara Cordero, Edwards, autor. ; Catalan Bernabe, Gustau, supervisor acadèmic. ; Domingo Marimon, Neus, supervisor acadèmic. ; Sort Viñas, Jordi, supervisor acadèmic. ; Universitat Autònoma de Barcelona. Departament de Física. ; Universitat Autònoma de Barcelona. Institut Català de Nanociència i Nanotecnologia (ICN2)
Los materiales ferroeléctricos pueden tener diferentes respuestas electromecánicas, por ejemplo la piezoelectricidad, polarización inducida cuando hay deformación homogénea, y la flexoelectricidad, polarización inducida cuando hay deformación inhomogénea. [...]
Ferroelectric materials can present various electromechanical responses. These include electrostriction (strain proportional to the square of the electric field) piezoelectricity (polarization induced by a strain), and flexoelectricity (polarization induced by a strain gradient). [...]

[Barcelona] : Universitat Autònoma de Barcelona, 2018.  
3.
110 p, 3.0 MB Flexoelectricity in single crystals / Narvaez Morales, Jackeline ; Catalan Bernabé, Gustau, dir. ; Domingo, Neus ; Universitat Autònoma de Barcelona. Departament de Física
En términos generales, la flexoelectricidad es la respuesta de la polarización a un gradiente de deformación. A diferencia del efecto piezoeléctrico, este efecto está presente en todos los materiales independientemente de su estructura cristalina. [...]
In general terms, flexoelectricity is the response of polarization to a strain gradient. In contrast to the piezoelectric effect, this effect is present in all materials regardless of their crystal structure. [...]

[Barcelona] : Universitat Autònoma de Barcelona, 2016  

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