Giant Fluctuations Induced by Thermal Diffusion in Complex Liquids
文献类型：期刊论文
| 作者 | Vailati A13; Baaske P12; Bataller H11; Bolis S10; Braibanti M9; Carpineti M13; Cerbino R8; Croccolo F11; Dewandel JL10; Donev A7 |
| 刊名 | MICROGRAVITY SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2020-07-14 |
| 页码 | 15 |
| 关键词 | Thermodiffusion Microgravity Non-equilibrium fluctuations Shadowgraph Transport properties |
| ISSN号 | 0938-0108 |
| DOI | 10.1007/s12217-020-09815-x |
| 英文摘要 | The GRADFLEX experiment of ESA has shown that under microgravity conditions a stationary thermodiffusion process is accompanied by giant non-equilibrium fluctuations with size as large as the size of the sample. In the presence of small concentration gradients, the features of the non-equilibrium fluctuations can be described by means of linearized hydrodynamics. However, the linear models are not suitable to describe most cases of applicative interest, such as fluctuations induced by large gradients and under non-stationary conditions. Moreover, presently the investigation of non-equilibrium fluctuations has mainly involved single component fluids and binary mixtures, but recently transport processes in ternary mixtures have attracted increasing interest due to the experiments performed on the International Space Station in the framework of the DCMIX project of ESA. The Giant Fluctuations (NEUF-DIX) project of ESA will investigate non-equilibrium fluctuations during diffusive processes occurring in complex multi-component mixtures, where one of the components is a macromolecule, such as a polymer, a colloid or a protein. Important objectives will be the exploration of the features of the fluctuations under non-ideal conditions, such as large gradients, transient processes, and concentrated samples, and the understanding of how the fluctuations affect the interactions between macromolecules. The project involves the development of a dedicated facility, consisting of an array of shadowgraph optical instruments working in parallel, each one equipped with a thermal gradient cell. Here we outline the design concept of the facility and the results of performance tests performed on a breadboard to evaluate the suitability of the designed instrument to carry out scientific measurements of non-equilibrium concentration fluctuations in space. |
| 分类号 | 二类 |
| WOS关键词 | NONEQUILIBRIUM FLUCTUATIONS ; MIXTURES ; THERMODIFFUSION ; POLYSTYRENE ; SEMIDILUTE ; SCHLIEREN ; SORET |
| WOS研究方向 | Engineering ; Thermodynamics ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000548757300001 |
| 资助机构 | Universita degli Studi di Milano within the CRUI-CARE Agreement |
| 其他责任者 | Vailati, Alberto |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/84748]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 作者单位 | 1.Ctr Natl Etud Spatiales, Paris, France 2.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China; 3.Univ Complutense Madrid, Dept Estruct Mat Fis Term & Elect, Fac Ciencias Fis, Madrid, Spain; 4.ESA ESTEC, Noordwijk, Netherlands; 5.Univ Bayreuth, Phys Inst, Bayreuth, Germany; 6.Qinetiq Space, Kruibeke, Belgium; 7.NYU, Courant Inst Math Sci, New York, NY USA; 8.Univ Milan, Dipartimento Biotecnol Med & Med Traslaz, Segrate, MI, Italy; 9.HE Space Operat BV ESA, NL-2200 AG Noordwijk, Netherlands; 10.Lambda X, Nivelles, Belgium; |
| 推荐引用方式 GB/T 7714 | Vailati A,Baaske P,Bataller H,et al. Giant Fluctuations Induced by Thermal Diffusion in Complex Liquids[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2020:15. |
| APA | Vailati A.,Baaske P.,Bataller H.,Bolis S.,Braibanti M.,...&Zapf D.(2020).Giant Fluctuations Induced by Thermal Diffusion in Complex Liquids.MICROGRAVITY SCIENCE AND TECHNOLOGY,15. |
| MLA | Vailati A,et al."Giant Fluctuations Induced by Thermal Diffusion in Complex Liquids".MICROGRAVITY SCIENCE AND TECHNOLOGY (2020):15. |
入库方式： OAI收割
来源：力学研究所
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