Nanofabrication of Double-Gyroid Thin Films

Autor:	Michael P. Tate, Ta-Chen Wei, Hugh W. Hillhouse, Vikrant N. Urade, Jonathan D. Kowalski
Rok vydání:	2007
Předmět:	Materials science business.industry Nanoporous General Chemical Engineering Nanotechnology General Chemistry Dielectric spectroscopy Semiconductor Nanolithography Photovoltaics Electrode Materials Chemistry Thin film business Gyroid
Zdroj:	Chemistry of Materials. 19:768-777
ISSN:	1520-5002 0897-4756
Popis:	Nanoporous silica films with the double-gyroid structure offer tremendous technological potential for sensors and separations because of their high surface area and potentially facile transport properties. Further, metals and semiconductors with similar structure open up new opportunities for high-surface-area electrodes, photoelectrochemical devices, photovoltaics, and thermoelectrics. Here, we report a new robust synthesis of highly ordered nanoporous silica films with the double-gyroid structure by evaporation-induced self-assembly (EISA) at room temperature and laboratory humidity using a commercially available EO17−PO12−C14 surfactant. The continuous nanoporous films are synthesized on conducting electrodes. Electrochemical impedance spectroscopy is then used to quantitatively measure the accessible surface area of the underlying electrode via transport through the pore system. It is found that the double-gyroid-structure silica films expose a much higher fraction of the electrode than other commonly...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abff3d9e935e602336f2ee714284ce7c https://doi.org/10.1021/cm062136n Zobrazit plný text záznamu