Electric field induced macroscopic cellular phase of nanoparticles
A suspension of nanoparticles with very low volume fraction is found to assemble into a macroscopic cellular phase that is composed of particle-rich walls and particle-free voids under the collective influence of AC and DC voltages. Systematic study of this phase transition shows that it was the res...
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| Veröffentlicht in: | Soft matter 2022-03, Vol.18 (1), p.1991-1996 |
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| container_end_page | 1996 |
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| container_issue | 1 |
| container_start_page | 1991 |
| container_title | Soft matter |
| container_volume | 18 |
| creator | Rendos, Abigail Cao, Wenhan Chern, Margaret Lauricella, Marco Succi, Sauro Werner, Jörg G Dennis, Allison M Brown, Keith A |
| description | A suspension of nanoparticles with very low volume fraction is found to assemble into a macroscopic cellular phase that is composed of particle-rich walls and particle-free voids under the collective influence of AC and DC voltages. Systematic study of this phase transition shows that it was the result of electrophoretic assembly into a two-dimensional configuration followed by spinodal decomposition into particle-rich walls and particle-poor cells mediated principally by electrohydrodynamic flow. This mechanistic understanding reveals two characteristics needed for a cellular phase to form, namely (1) a system that is considered two dimensional and (2) short-range attractive, long-range repulsive interparticle interactions. In addition to determining the mechanism underpinning the formation of the cellular phase, this work presents a method to reversibly assemble microscale continuous structures out of nanoscale particles in a manner that may enable the creation of materials that impact diverse fields including energy storage and filtration.
Nanoparticles assemble into a macroscopic cellular phase upon the simultaneous application of an AC and DC voltage. First, the particles move through electrophoresis into a 2D film and then electrohydrodynamic flows cause spinodal decomposition. |
| doi_str_mv | 10.1039/d1sm01650d |
| format | Article |
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Nanoparticles assemble into a macroscopic cellular phase upon the simultaneous application of an AC and DC voltage. 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Nanoparticles assemble into a macroscopic cellular phase upon the simultaneous application of an AC and DC voltage. First, the particles move through electrophoresis into a 2D film and then electrohydrodynamic flows cause spinodal decomposition.</abstract><cop>England</cop><pub>Royal Society of Chemistry</pub><pmid>35080230</pmid><doi>10.1039/d1sm01650d</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0003-4526-0490</orcidid><orcidid>https://orcid.org/0000-0003-1398-1154</orcidid><orcidid>https://orcid.org/0000-0002-3862-5562</orcidid><orcidid>https://orcid.org/0000-0001-7845-086X</orcidid><orcidid>https://orcid.org/0000-0002-2379-2018</orcidid><orcidid>https://orcid.org/0000-0001-5759-9905</orcidid><orcidid>https://orcid.org/0000-0003-3993-5500</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1744-683X |
| ispartof | Soft matter, 2022-03, Vol.18 (1), p.1991-1996 |
| issn | 1744-683X 1744-6848 |
| language | eng |
| recordid | cdi_proquest_journals_2637279596 |
| source | MEDLINE; Alma/SFX Local Collection; Royal Society of Chemistry E-Journals |
| subjects | Electric fields Electricity Electrohydrodynamics Electrophoresis Energy storage Nanoparticles Phase Transition Phase transitions Spinodal decomposition Suspensions Walls |
| title | Electric field induced macroscopic cellular phase of nanoparticles |
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