Please use this identifier to cite or link to this item:
http://hdl.handle.net/1843/64141| Type: | Artigo de Periódico |
| Title: | Graphene nanoencapsulation action at an air/lipid interface |
| Authors: | Gustavo Arrighi Ferrari Rodrigo Gribel Lacerda Helio Chacham Alan Barros de Oliveira Matheus Josué de Souza Matos Ronaldo Junio Campos Batista Leonel Muniz Meireles Ana Paula Moreira Barboza Ive Silvestre de Almeida Bernardo Ruegger Almeida Neves |
| Abstract: | In the present work, we apply a microfluidic channel platform to study mechanical and adhesion properties of suspended graphene in contact with oleic acid (a lipid). In the platform, one side of the suspended graphene, atop a window in a fluidic channel, is placed in contact with the lipid, and the mechanical response of graphene is experimentally accessed with an atomic force microscope probe. We observe a strong effect arising from the presence of oleic acid: the probe undergoes a large jump-to-contact effect, being pulled and partially encapsulated by graphene, in a phagocytosis-like phenomenon, until it penetrates 0.2 µm into graphene. In contrast, such encapsulation effect is negligible in the absence of oleic acid in the channel, with probe penetration of less than 0.02 µm. The lipid-induced encapsulation effect is observed to occur concurrently with graphene delamination from the window walls. Molecular dynamics simulations and continuum mechanics analytical modeling are also performed, the latter allowing quantitative fittings to the experiments. |
| Subject: | Grafeno Lipídios |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE FÍSICA |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1007/s10853-022-07030-0 |
| URI: | http://hdl.handle.net/1843/64141 |
| Issue Date: | 2022 |
| metadata.dc.url.externa: | https://link.springer.com/article/10.1007/s10853-022-07030-0 |
| metadata.dc.relation.ispartof: | Journal of Materials Science |
| Appears in Collections: | Artigo de Periódico |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.