| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | plutao.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 8JMKD3MGP3W/474P6US |
| Repository | sid.inpe.br/plutao/2022/06.15.13.43 (restricted access) |
| Last Update | 2022:06.20.13.04.36 (UTC) lattes |
| Metadata Repository | sid.inpe.br/plutao/2022/06.15.13.43.14 |
| Metadata Last Update | 2023:01.03.16.52.56 (UTC) administrator |
| DOI | 10.1016/j.sna.2022.113626 |
| ISSN | 0924-4247 |
| Label | lattes: 0560039556461253 5 BragaVieAntDonCor:2022:EvCoPi |
| Citation Key | BragaVieAntDonCor:2022:EvCoPi |
| Title | Evaluation of conductivity and piezo-impedance response of VACNTs/PDMS nanocomposite-based strain sensors under small deformations  |
| Year | 2022 |
| Access Date | 2024, May 19 |
| Type of Work | journal article |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 8522 KiB |
| 2. Context | |
| Author | 1 Braga, Thyago Santos 2 Vieira, Nirton C. S. 3 Antonelli, Eduardo 4 Donadon, Mauricio 5 Corat, Evaldo José |
| Resume Identifier | 1 2 3 4 5 8JMKD3MGP5W/3C9JH33 |
| Group | 1 2 3 4 5 COPDT-CGIP-INPE-MCTI-GOV-BR |
| Affiliation | 1 Instituto Tecnológico da Aeronáutica (ITA) 2 Universidade Federal de São Paulo (UNIFESP) 3 Universidade Federal de São Paulo (UNIFESP) 4 Instituto Tecnológico da Aeronáutica (ITA) 5 Instituto Nacional de Pesquisas Espaciais (INPE) |
| Author e-Mail Address | 1 guitar.thyago@gmail.com 2 3 4 5 evaldo.corat@inpe.br |
| Journal | Sensors and Actuators A-Physical |
| Volume | 342 |
| Pages | e113626 |
| History (UTC) | 2022-06-20 13:04:38 :: lattes -> administrator :: 2022 2023-01-03 16:52:56 :: administrator -> simone :: 2022 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | publisher |
| Keywords | Carbon nanotubes Sensor de deformação Vertically aligned multi-walled carbon nanotubes Stretchable sensors Tunneling effect Dielectric impedance Cut-off frequency |
| Abstract | The vertically aligned multi-walled carbon nanotubes (VACNTs) / polydimethylsiloxane (PDMS) nanocompositebased strain sensors presented in this study show different behavior depending on catalyst concentrations for VACNT growth. Under static tensile load, the sensor with lower catalyst concentration shows a high gauge factor (GF~1400), whereupon tunneling effect is the mechanism that dictates the sensitivity. For higher concentrations, the GF decreases (GF~40) and shows an ohmic conduction. Morphological examinations showed VACNTs are homogeneously and randomly distributed as clusters with CNT bridging in the PDMS polymer matrix. Based on dielectric impedance (DI) and direct current (DC) electrical analysis, it was possible to identify that cut-off frequency (fc) increases with VACNTs concentration. Cut-off frequency can also define high sensitivity VACNT sensors with lower VACNT density. When compared with dispersed MWCNT sensors, VACNTs have a reduced fc due to the larger internal resistance variation associated with the high tunneling effect. This effect associated with the high sensitivity of the VACNT/PDMs sensors makes it a key factor to understand the mechanisms responsible for increasing the sensitivity and manufacturing of high GF nanocomposite stretchable sensors. |
| Area | FISMAT |
| Arrangement | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGIP > Evaluation of conductivity... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | Braga_2022_evaluation.pdf |
| User Group | lattes |
| Reader Group | administrator lattes |
| Visibility | shown |
| Read Permission | deny from all and allow from 150.163 |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/46KUES5 |
| Citing Item List | sid.inpe.br/bibdigital/2022/04.03.23.11 2 |
| Dissemination | WEBSCI; PORTALCAPES; SCOPUS. |
| Host Collection | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notes | |
| Notes | Setores de Atividade: Pesquisa e desenvolvimento científico. |
| Empty Fields | alternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn lineage mark mirrorrepository month nextedition number orcid parameterlist parentrepositories previousedition previouslowerunit progress project rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url |
| 7. Description control | |
| e-Mail (login) | simone |
| update | |