VTechWorks staff will be away for the Thanksgiving holiday beginning at noon on Wednesday, November 27, through Friday, November 29. We will resume normal operations on Monday, December 2. Thank you for your patience.
 

Nanoimprinted conducting nanopillar arrays made of MWCNT/polymer nanocomposites: a study by electrochemical impedance spectroscopy

Simple item page
dc.contributor.authorXiao, Chuanen
dc.contributor.authorZhao, Yumingen
dc.contributor.authorZhou, Weien
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2021-06-01T14:49:03Zen
dc.date.available2021-06-01T14:49:03Zen
dc.date.issued2021-01-21en
dc.description.abstractConducting vertical nanopillar arrays can serve as three-dimensional nanostructured electrodes with improved electrical recording and electrochemical sensing performance in bio-electronics applications. However, vertical nanopillar-array electrodes made of inorganic conducting materials by the conventional nanofabrication approach still face challenges in terms of high manufacturing costs, poor scalability, and limited carrier substrates. Here, we report a new type of conducting nanopillar array composed of multi-walled carbon nanotube (MWCNT) doped polymeric nanocomposites, which are manufactured on the wafer-scale on both rigid and flexible substrates by direct nanoimprinting of perfluoropolyether nanowell-array templates into uncured MWCNT/polymer mixtures. By controlling the MWCNT ratios and the annealing temperatures during the fabrication process, MWCNT/polymer nanopillar arrays can be endowed with outstanding electrical properties with high DC conductivity (similar to 4 S m(-1)) and low AC electrochemical impedance (similar to 10(4) omega at 1000 Hz). Moreover, by electrochemical impedance spectroscopy (EIS) measurements and equivalent circuit modeling analysis, we can decompose the overall impedance of the MWCNT/polymer nanopillar arrays in the electrolyte into multiple bulk and interfacial circuit components, and can thus illustrate their different dependences on the MWCNT ratios and the annealing temperatures. In particular, we find that an appropriate annealing process can significantly reduce the anomalous ion diffusion impedance and improve the MWCNT/polymer nanopillars' impedance properties in the electrolyte.en
dc.description.notesThis work was supported by AFOSR Young Investigator Award FA9550-18-1-0328.en
dc.description.sponsorshipAFOSR Young Investigator Award [FA9550-18-1-0328]en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1039/d0na00200cen
dc.identifier.issn2516-0230en
dc.identifier.issue2en
dc.identifier.urihttp://hdl.handle.net/10919/103555en
dc.identifier.volume3en
dc.language.isoenen
dc.rightsCreative Commons Attribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en
dc.titleNanoimprinted conducting nanopillar arrays made of MWCNT/polymer nanocomposites: a study by electrochemical impedance spectroscopyen
dc.title.serialNanoscale Advancesen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
d0na00200c.pdf
Size:
963.77 KB
Format:
Adobe Portable Document Format
Description:
Published version
Download

Collections

Scholarly Works, Electrical and Computer Engineering