Investigation of temperature response of photopolymer material used for holographic sensor

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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 N-isopropylacrylamide (NIPA) which under photopolymerisation forms a temperature sensitive polymer - Poly(N-isopropylacrylamide) (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°C. It was observed that the DE increased with increasing temperature at 10°C min-1 and started to drop by reversing the temperature at 5°C 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.

Original languageEnglish
Title of host publicationProceedings of 2018 15th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages22-27
Number of pages6
ISBN (Electronic)9781538635643
DOIs
Publication statusPublished - 9 Mar 2018
Event15th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2018 - Islamabad, Pakistan
Duration: 9 Jan 201813 Jan 2018

Publication series

NameProceedings of 2018 15th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2018
Volume2018-January

Conference

Conference15th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2018
Country/TerritoryPakistan
CityIslamabad
Period9/01/1813/01/18

Keywords

  • Holographic sensor
  • Photopolymer
  • Volume phase transmission gratings

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