A transparent flexible z-axis sensitive multi-touch panel based on colloidal ITO nanocrystals

Bottom-up fabrication of a flexible multi-touch panel prototype based on transparent colloidal indium tin oxide (ITO) nanocrystal (NC) films is presented. A series of 7% Sn(4+) doped ITO NCs protected by oleate, octanoate and butanoate ligands are synthesized and characterized by a battery of techni...

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Published in:Nanoscale 2015-08, Vol.7 (29), p.12631-12640
Main Authors: Sangeetha, N M, Gauvin, M, Decorde, N, Delpech, F, Fazzini, P F, Viallet, B, Viau, G, Grisolia, J, Ressier, L
Format: Article
Language:English
Subjects:
Chemical Sciences
Colloids
Indium tin oxide
Ligands
Nanocrystals
Nanostructure
Panels
Physics
Self assembly
Spectroscopy
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cited_by cdi_FETCH-LOGICAL-c354t-2b0497ef68e106ddeafcc7b7a159976d7d9a34d6eb2807bf82375a0ba260f1283
cites cdi_FETCH-LOGICAL-c354t-2b0497ef68e106ddeafcc7b7a159976d7d9a34d6eb2807bf82375a0ba260f1283
container_end_page 12640
container_issue 29
container_start_page 12631
container_title Nanoscale
container_volume 7
creator Sangeetha, N M
Gauvin, M
Decorde, N
Delpech, F
Fazzini, P F
Viallet, B
Viau, G
Grisolia, J
Ressier, L
description Bottom-up fabrication of a flexible multi-touch panel prototype based on transparent colloidal indium tin oxide (ITO) nanocrystal (NC) films is presented. A series of 7% Sn(4+) doped ITO NCs protected by oleate, octanoate and butanoate ligands are synthesized and characterized by a battery of techniques including, high resolution transmission electron microscopy, X-ray diffraction, (1)H, (13)C and (119)Sn nuclear magnetic resonance spectroscopy, and the related diffusion ordered spectroscopy. Electrical resistivities of transparent films of these NCs assembled on flexible polyethylene terephthalate substrates by convective self-assembly from their suspension in toluene decrease with the ligand length, from 220 × 10(3) for oleate ITO to 13 × 10(3)Ω cm for butanoate ITO NC films. A highly transparent, flexible touch panel based on a matrix of strain gauges derived from the least resistive film of 17 nm butanoate ITO NCs sensitively detects the lateral position (x, y) of the touch as well as its intensity over the z-axis. Being compatible with a stylus or bare/gloved finger, a larger version of this module may be readily implemented in upcoming flexible screens, enabling navigation capabilities over all three axes, a feature highly desired by the display industry.
doi_str_mv 10.1039/c5nr02043c
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source Royal Society of Chemistry:Jisc Collections:Royal Society of Chemistry Read and Publish 2022-2024 (reading list)
subjects Chemical Sciences
Colloids
Indium tin oxide
Ligands
Nanocrystals
Nanostructure
Panels
Physics
Self assembly
Spectroscopy
title A transparent flexible z-axis sensitive multi-touch panel based on colloidal ITO nanocrystals
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