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Published on: August 19, 2015
A novel ionic polymer metal ZnO composite (IPMZC)
Sang-Mun Kim1, Rashi Tiwari, Kwang J Kim
1Active Materials and Processing Laboratory, Department of Mechanical Engineering, University of Nevada, Reno, NV 89557, USA. sangmunk@unr.edu
Sensors (Basel, Switzerland)
|December 14, 2011
Summary
A new Ionic Polymer-Metal-ZnO Composite (IPMZC) shows photoluminescence (PL) quenching when bent or electrified. This material enables non-contact monitoring of Ionic Polymer Metal Composite (IPMC) responses, improving transduction.
Area of Science:
- Materials Science
- Nanotechnology
- Optoelectronics
Background:
- Ionic Polymer Metal Composites (IPMCs) are electroactive materials.
- ZnO is known for its optical properties.
- Integrating optical and electroactive materials can lead to novel sensor applications.
Purpose of the Study:
- To develop a new Ionic Polymer-Metal-ZnO Composite (IPMZC).
- To investigate the photoluminescence (PL) quenching behavior of IPMZC under mechanical and electrical stimuli.
- To establish a non-contact method for reading out IPMC responses.
Main Methods:
- Fabrication of the IPMZC by integrating ZnO with IPMC.
- Measurement of PL spectra under varying mechanical bending and applied electric fields.
- Analysis of the relationship between PL quenching and stimuli intensity.
Main Results:
- The IPMZC exhibited PL quenching in response to mechanical bending and electric fields.
- PL quenching was proportional to curvature and applied field at specific wavelengths (384 nm and 468 nm).
- Maximum quenching achieved was 53.4% with membrane curvature and 3.01% with an electric field.
Conclusions:
- The developed IPMZC shows a measurable electro-mechano-optical response.
- Coating IPMC with crystalline ZnO enhances its transduction capabilities.
- IPMZC offers a promising platform for non-contact sensing applications.
