Proceedings of ISAF-ECAPD-PFM 2012最新文献_第2页

Stem cells differentiation induced by physical stimulation using piezoelectric nanocomposite material 压电纳米复合材料物理刺激诱导干细胞分化

Proceedings of ISAF-ECAPD-PFM 2012 Pub Date : 2012-07-09 DOI: 10.1109/ISAF.2012.6297810

D. Rouxel, A. Thouvenin, F. Courtout, V. Nguyen, B. Vincent, G. Prieur, É. Velot, N. Merakchi, P. Menu

{"title":"Stem cells differentiation induced by physical stimulation using piezoelectric nanocomposite material","authors":"D. Rouxel, A. Thouvenin, F. Courtout, V. Nguyen, B. Vincent, G. Prieur, É. Velot, N. Merakchi, P. Menu","doi":"10.1109/ISAF.2012.6297810","DOIUrl":"https://doi.org/10.1109/ISAF.2012.6297810","url":null,"abstract":"Bioengineering has become one of the most promising fields in regenerative medicine. Many of its applications have been settled through stem cell research in order to develop innovative stimuli to differentiate the cells into a specific lineage via physical stimulation such as thermal, mechanical or electrical stimuli to avoid the use of biochemical products. Many examples are found in literature, however none of them could provide conclusive answers in this research field. Piezoelectric materials are able to combine mechanical and electrical stimulation. Environments mimicking in vivo conditions are supposed to be the best to induce differentiation process, but these mechanisms are still not fully mastered and very much dependent on cell type. In this poster, we will introduce the experimental setup used to study the effects of physical (i.e. electrical and/or mechanical) stimulation on human mesenchymal stem cells. An overview of the thought process leading to our project is exposed, as well as a brief bibliographical study of electrical stimulation effects on cells. The emphasis will be focused on the piezoelectric materials used in this project. We selected a nanocomposite material, a copolymer P(VDF-TrFE) matrix charged with ZnO nanoparticles, in order to modulate the mechanical and piezoelectric properties of the matrix as well as to provide a better sticking surface favouring cell adhesion.","PeriodicalId":20497,"journal":{"name":"Proceedings of ISAF-ECAPD-PFM 2012","volume":"32 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2012-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87924038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetodielectric properties of (1−x)PMN-PT/xCFO particulate composites (1−x)PMN-PT/xCFO颗粒复合材料的磁介电性能

Proceedings of ISAF-ECAPD-PFM 2012 Pub Date : 2012-07-09 DOI: 10.1109/ISAF.2012.6297850

F. Zabotto, A. Gualdi, A. D. de Oliveira, J. Eiras, D. Garcia

引用次数: 1

XRD, dielectric and magnetic studies of Cd2Nb2O7 ceramics obtained from mechano-synthesized nanopowders 机械合成纳米粉末制备的Cd2Nb2O7陶瓷的XRD、介电和磁性研究

Proceedings of ISAF-ECAPD-PFM 2012 Pub Date : 2012-07-09 DOI: 10.1109/ISAF.2012.6297742

M. Połomska, B. Hilczer, Ewa Markiewicz, Zbigniew Trybuła, Bartłomiej Andrzejewski, I. S. Wiza, Adam Pietraszko

引用次数: 0

Magnetoelectric properties of 0.2CoFe2O4-0.8BaTiO3 composite prepared by organic method 有机法制备0.2CoFe2O4-0.8BaTiO3复合材料的磁电性能

Proceedings of ISAF-ECAPD-PFM 2012 Pub Date : 2012-07-09 DOI: 10.1109/ISAF.2012.6297820

Morad Etier, Yaling Gao, V. Shvartsman, D. Lupascu, J. Landers, Heiko Wende

引用次数: 7

Ferroelectric and magnetic phase transitions in multiferroic PbFe0.5Ta0.5O3-PbTiO3 solid solutions 多铁质PbFe0.5Ta0.5O3-PbTiO3固溶体中的铁电相变和磁相变

Proceedings of ISAF-ECAPD-PFM 2012 Pub Date : 2012-07-09 DOI: 10.1109/ISAF.2012.6297783

A. V. Blazhevich, I. Raevski, S. P. Kubrin, E. Sitalo, S. I. Raevskaya, V. V. Titov, D. Sarychev, M. A. Malitskaya, I. Zakharchenko

引用次数: 1

Highly oriented La doped (K, Na)NbO3 ferroelectric thin films 高取向La掺杂(K, Na)NbO3铁电薄膜

Proceedings of ISAF-ECAPD-PFM 2012 Pub Date : 2012-07-09 DOI: 10.1109/ISAF.2012.6297793

X. Vendrell, L. Mestres, O. Raymond, D. A. Ochoa, J. García

引用次数: 0

Rectifier and structural design for efficient energy harvesting system from impact-based piezoelectric array 冲击式压电阵列高效能量采集系统整流器及结构设计

Proceedings of ISAF-ECAPD-PFM 2012 Pub Date : 2012-07-09 DOI: 10.1109/ISAF.2012.6297750

K. H. Baek, S. Hong, Se Bin Kim, Jeong Hun Kim, T. Sung

引用次数: 2

Synchrotron texture analysis of thick BiFeO3-PbTiO3 layers synthesised by tape casting using Aurivillius and non-Aurivillius templates 用Aurivillius和非Aurivillius模板胶带铸造合成BiFeO3-PbTiO3厚层的同步加速器织构分析

Proceedings of ISAF-ECAPD-PFM 2012 Pub Date : 2012-07-09 DOI: 10.1109/ISAF.2012.6297816

M. Palizdar, T. Comyn, S. Poterala, G. Messing, E. Suvacı, A. Kleppe, A. J. Jephcoat, A. Bell

{"title":"Synchrotron texture analysis of thick BiFeO3-PbTiO3 layers synthesised by tape casting using Aurivillius and non-Aurivillius templates","authors":"M. Palizdar, T. Comyn, S. Poterala, G. Messing, E. Suvacı, A. Kleppe, A. J. Jephcoat, A. Bell","doi":"10.1109/ISAF.2012.6297816","DOIUrl":"https://doi.org/10.1109/ISAF.2012.6297816","url":null,"abstract":"The solid solution between bismuth ferrite and lead titanate (xBiFeO3-(1-x)PbTiO3 or BFPT) possesses a morphotropic phase boundary (MPB) between the rhombohedral and tetragonal forms at x=0.7. It is of interest to investigate the influence of field-driven rhombohedral-tetragonal phase transitions across the MPB, to determine whether correctly oriented BFPT can provide both giant piezoelectric properties and significant magnetoelectric coupling. Here, we used the reactive templated grain growth (RTGG) technique to prepare crystallographically textured 0.6BiFeO3-0.4PbTiO3 (60:40 BFPT) ceramics. Both Aurivillius structure templates (Bi4Ti3O12 and PbBi4Ti4O15) and perovskite templates (BaTiO3 and SrTiO3) were used to prepare textured 60:40BFPT. Synchrotron radiation experiments were used to determine the degree of texture. A current data suggests that only BaTiO3 templates survive the sintering process, and other candidate template materials reacted with the 60:40BFPT matrix at high temperature. In the case of SrTiO3, this reaction results in a low Curie temperature (Tc = 350°C) due to the substitution of Sr2+. Aurivillius templates resulted in high Curie temperatures (610°C) and may be chemically suitable if they could be stabilized during the sintering process. However, the resulting ceramics show low remanent polarization (Pr = 3 μc/cm2), while SrTiO3 and BaTiO3 templated ceramics show higher remanent polarizations of 36 and 30 μc/cm2, respectively. Because of their high chemical stability in this system, BaTiO3 templates appear to be the best candidate for fabricating textured BFPT by the TGG method, displaying a high degree of crystallographic texture.","PeriodicalId":20497,"journal":{"name":"Proceedings of ISAF-ECAPD-PFM 2012","volume":"44 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2012-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84120142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Dielectric properties of grainy composites studied by finite element method 用有限元法研究了颗粒状复合材料的介电性能

Proceedings of ISAF-ECAPD-PFM 2012 Pub Date : 2012-07-09 DOI: 10.1109/ISAF.2012.6297860

I. Rychetský, A. Klíč

引用次数: 0

Design of vibration exciter by using permanent magnets for application to piezoelectric energy harvesting 用于压电能量收集的永磁体激振器的设计

Proceedings of ISAF-ECAPD-PFM 2012 Pub Date : 2012-07-09 DOI: 10.1109/ISAF.2012.6297748

C. Yang, D. Song, M. S. Woo, S. Hong, K. H. Baek, T. Sung

引用次数: 5