“Electro-Typing” on a Carbon-Nanoparticles-Filled Polymeric Film using Conducting Atomic Force Microscopy

Sumita Goswami, Suman Nandy, Arghya Narayan Banerjee, Asal Kiazadeh, Gowra Raghupathy Dillip, Joana Vaz Pinto, Sang Woo Joo, Rodrigo Martins, Elvira Fortunato

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Next-generation electrical nanoimprinting of a polymeric data sheet based on charge trapping phenomena is reported here. Carbon nanoparticles (CNPs) (waste carbon product) are deployed into a polymeric matrix (polyaniline) (PANI) as a charge trapping layer. The data are recorded on the CNPs-filled polyaniline device layer by “electro-typing” under a voltage pulse (VET, from ±1 to ±7 V), which is applied to the device layer through a localized charge-injection method. The core idea of this device is to make an electrical image through the charge trapping mechanism, which can be “read” further by the subsequent electrical mapping. The density of stored charges at the carbon–polyaniline layer, near the metal/polymer interface, is found to depend on the voltage amplitude, i.e., the number of injected charge carriers. The relaxation of the stored charges is studied by different probe voltages and for different devices, depending on the percolation of the CNPs into the PANI. The polymeric data sheet retains the recorded data for more than 6 h, which can be refreshed or erased at will. Also, a write–read–erase–read cycle is performed for the smallest “bit” of stored information through a single contact between the probe and the device layer.

Original languageEnglish
Article number1703079
JournalAdvanced Materials
Volume29
Issue number47
DOIs
Publication statusPublished - 20 Dec 2017

Keywords

  • carbon nanoparticles
  • charge trapping
  • conducting atomic force microscopy
  • CV
  • polymer composites

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