Miniatura

Fitxers

692294.pdf (4.33 MB)

Tipus de document

Article

Versió

Versió publicada

Data de publicació

2019-10-02

Llicència de publicació

cc-by (c) Lozano Caballero, Helena et al., 2019
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/176730

Sizing single nanoscale objects from polarization forces

Títol de la revista

Autors

Director/Tutor

ISSN de la revista

Títol del volum

Recurs relacionat

https://doi.org/10.1038/s41598-019-50745-5

Resum

Sizing natural or engineered single nanoscale objects is fundamental in many areas of science and technology. To achieve it several advanced microscopic techniques have been developed, mostly based on electron and scanning probe microscopies. Still for soft and poorly adhered samples the existing techniques face important challenges. Here, we propose an alternative method to size single nanoscale objects based on the measurement of its electric polarization. The method is based on Electrostatic Force Microscopy measurements combined with a specifically designed multiparameter quantification algorithm, which gives the physical dimensions (height and width) of the nanoscale object. The proposed method is validated with ~50 nm diameter silver nanowires, and successfully applied to ~10 nm diameter bacterial polar flagella, an example of soft and poorly adhered nanoscale object. We show that an accuracy comparable to AFM topographic imaging can be achieved. The main advantage of the proposed method is that, being based on the measurement of long-range polarization forces, it can be applied without contacting the sample, what is key when considering poorly adhered and soft nanoscale objects. Potential applications of the proposed method to a wide range of nanoscale objects relevant in Material, Life Sciences and Nanomedicine is envisaged.

Matèries

Microscòpia electrònica d'escombratge, Polarització (Electricitat), Nanoelectrònica

Matèries (anglès)

Scanning electron microscopy, Polarization (Electricity), Nanoelectronics

Citació

Col·leccions

Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)
<b>Publicacions de projectes de recerca finançats per la UE</b>
Articles publicats en revistes (Institut de Bioenginyeria de Catalunya (IBEC))

Citació

LOZANO CABALLERO, Helena, MILLÁN SOLSONA, Rubén, FABREGAS, Rene, GOMILA LLUCH, Gabriel. Sizing single nanoscale objects from polarization forces. _Scientific Reports_. 2019. Vol. 9, núm. 1, pàgs. 14142. [consulta: 23 de gener de 2026]. ISSN: 2045-2322. [Disponible a: https://hdl.handle.net/2445/176730]

Exportar metadades

JSON - METS

Compartir registre