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Multilayered gold/silica nanoparticulate bilayer devices using layer-by-layer self organisation for flexible bending and pressure sensing applications
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Functional Materials, FNM. Center of Excellence in Nanotechnology, Asian Institute of Technology, 12120 Pathumthani, Thailand.ORCID iD: 0000-0002-0074-3504
2014 (English)In: Applied Physics Letters, Vol. 104, no 7Article in journal (Refereed) Published
Abstract [en]

A pressure and bending sensor was fabricated using multilayer thin films fabricated on a flexible substrate based on layer-by-layer self-organization of 18 nm gold nanoparticles separated by a dielectric layer of 30 nm silica nanoparticles. 50, 75, and 100 gold-silica bi-layered films were deposited and the device characteristics were studied. A threshold voltage was required for electron conduction which increases from 2.4 V for 50 bi-layers to 3.3 V for 100 bi-layers. Upon bending of the device up to about 52°, the threshold voltage and slope of the I-V curves change linearly. Electrical characterization of the multilayer films was carried out under ambient conditions with different pressures and bending angles in the direct current mode. This study demonstrates that the developed multilayer thin films can be used as pressure as well as bending sensing applications.

Place, publisher, year, edition, pages
2014. Vol. 104, no 7
National Category
Nano Technology
URN: urn:nbn:se:kth:diva-175184DOI: 10.1063/1.4866003ISI: 000332038500058ScopusID: 2-s2.0-84897417895OAI: diva2:914264

QC 20160329

Available from: 2016-03-23 Created: 2015-10-10 Last updated: 2016-03-29Bibliographically approved

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Dutta, Joydeep
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