Use este identificador para citar ou linkar para este item:
http://hdl.handle.net/1843/46566| Tipo: | Artigo de Periódico |
| Título: | Few-wall carbon nanotube coils |
| Autor(es): | Dekel Nakar Stephanie Reich Ernesto Joselevich Leonardo Dantas Machado Ronit Popovitz-Biro Katya Rechav Eliezer Fernando de Oliveira Patryk Kusch Ado Jorio de Vasconcelos Douglas Soares Galvão |
| Resumo: | While various electronic components based on carbon nanotubes (CNTs) have already been demonstrated, the realization of miniature electromagnetic coils based on CNTs remains a challenge. Coils made of single-wall CNTs with accessible ends for contacting have been recently demonstrated but were found unsuitable to act as electromagnetic coils because of electrical shorting between their turns. Coils made of a few-wall CNT could in principle allow an insulated flow of current and thus be potential candidates for realizing CNT-based electromagnetic coils. However, no such CNT structure has been produced so far. Here, we demonstrate the formation of few-wall CNT coils and characterize their structural, optical, vibrational, and electrical properties using experimental and computational tools. The coils are made of CNTs with 2, 3, or 4 walls. They have accessible ends for electrical contacts and low defect densities. The coil diameters are on the order of one micron, like those of single-wall CNT coils, despite the higher rigidity of few-wall CNTs. Coils with as many as163 turns were found, with their turns organized in a rippled raft configuration. These coils are promising candidates for a variety of miniature devices based on electromagnetic coils, such as electromagnets, inductors, transformers, and motors. Being chirally and enantiomerically pure few-wall CNT bundles, they are also ideal for fundamental studies of interwall coupling and superconductivity in CNTs. |
| Assunto: | Nanotubos de carbono Nanotubos de carbono de paredes múltiplas Transmission electron microscopes Espectroscopia de Raman |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | ICX - DEPARTAMENTO DE FÍSICA |
| Tipo de Acesso: | Acesso Restrito |
| Identificador DOI: | https://doi.org/10.1021/acs.nanolett.9b03977 |
| URI: | http://hdl.handle.net/1843/46566 |
| Data do documento: | 23-Dez-2019 |
| metadata.dc.url.externa: | https://pubs.acs.org/doi/10.1021/acs.nanolett.9b03977 |
| metadata.dc.relation.ispartof: | Nano Letters |
| Aparece nas coleções: | Artigo de Periódico |
Arquivos associados a este item:
Não existem arquivos associados a este item.
Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.