Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/137537
COMPARTIR / EXPORTAR:
SHARE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | On the mechanical and electronic properties of alkylthiolated Au nanoelectrode molecular junctions |
Autor: | Smaali, K.; Foti, Giuseppe CSIC ORCID; Sánchez-Portal, Daniel CSIC ORCID ; Arnau, Andrés CSIC ORCID; Vuillaume, D.; Clément, N. | Fecha de publicación: | 2015 | Citación: | SYMOLESCO Workshop (2015) | Resumen: | Due to their exceptional chemical, physical, and electric properties, gold nanoparticles (NPs) are applied in many fields, ranging from nanoelectronics, nanotechnology, and catalysis to biomedicine. Furthermore, electronic properties can be tuned by functionalization with different capping layers. Here, we present a quantitative exploration, combining experiment and simulation, of the mechanical and electronic properties, as well as the modifications induced by an alkylthiolated coating, at the single NP level. We determine the response of the NPs to external pressure in a controlled manner by using an atomic force microscope tip (peak-force TUNA). We find a strong reduction of their Young modulus, as compared to bulk gold, and a significant influence of strain in the electronic properties of the alkylthiolated NPs. Electron transport measurements of tiny molecular junctions (NP/alkylthiol/CAFM tip) show that the effective tunneling barrier through the adsorbed monolayer strongly decreases with increasing the applied load, which translates in a remarkable and unprecedented increase of the tunnel current. These observations are successfully explained using simulations based on finite element analysis (FEA) and first-principles calculations that permit to consider the coupling between the mechanical response of the system and the electric dipole variations at the interface. | Descripción: | Resumen del trabajo presentado al 1st Annual Meeting and Joint MOLESCO-SYMONE Workshop, celebrado en Engelberg (Suiza) del 8 al 11 de febrero de 2015. | URI: | http://hdl.handle.net/10261/137537 |
Aparece en las colecciones: | (CFM) Comunicaciones congresos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
Page view(s)
135
checked on 18-mar-2024
Download(s)
37
checked on 18-mar-2024
Google ScholarTM
Check
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.