Author ORCID Identifier

https://orcid.org/0000-0003-1363-390X

Document Type

Conference Paper

Disciplines

1. NATURAL SCIENCES, 1.3 PHYSICAL SCIENCES, Optics, Polymer science

Publication Details

Proceedings of IEEE,

Conference: 2018 15th International Bhurban Conference on Applied Sciences and Technology (IBCAST), Islamabad, Pakistan, 9th-13th January 2018.

Abstract

Recently, functionalised photopolymer has emerged as a versatile recording material in the field of optical holography due to its novel characteristics and potential use in the development of holographic based sensors, and optical elements. This work describes the temperature response of a newly developed photopolymer, containing of a monomer Nisopropylacrylamide (NIPA) which under photopolymerisation forms a temperature sensitive polymer - Poly(Nisopropylacrylamide) (PNIPA). The photonic sensor was developed by holographic recording of volume phase transmission gratings in a self-processing NIPA-based polymer with a 532 nm laser beam. A 633 nm probe beam was used to monitor real time diffraction efficiency (DE) growth curve and the temperature dependent response of DE in the temperature range 22-50 oC. It was observed that the DE increased with increasing temperature at 10 oC min-1 and started to drop by reversing the temperature at 5 oC min-1. It was also observed that the response depends on the rate of heating/cooling and the time spent at elevated temperature. The observed response to temperature could be used to design an indicator for packaging, showing that the content of the package has been exposed to a temperature that was above a predetermined temperature limit.

DOI

DOI: 10.1109/IBCAST.2018.8312179

Funder

TU Dublin Fiosraigh Dean of Graduate Students Award

Creative Commons License

Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.

Download
Contact the Author


Share

COinS