Thermoplastic polyurethane as a mechanochromic strain sensor

Filippo Cellini, Sachin Khapli, Sean D. Peterson, Maurizio Porfiri

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Mechanochromism of polymer-dye blends can be used to formulate novel pressure sensors for fluid mechanics and hydrology, where the use of traditional electromechanical transducers may be limited by environmental factors. Here, we investigate optomechanical properties of a mechanochromic blend of thermoplastic polyurethane and 0.5 wt% bis(benzoxazolyl)stilbene fluorescent dye. We characterize the response of this soft active material in a stress relaxation test by simultaneous acquisition of the tensile load, the mechanical deformation, and the fluorescence emission.

Original languageEnglish (US)
Title of host publicationBehavior and Mechanics of Multifunctional Materials and Composites 2015
EditorsNakhiah C. Goulbourne
ISBN (Electronic)9781628415353
StatePublished - 2015
EventBehavior and Mechanics of Multifunctional Materials and Composites 2015 - San Diego, United States
Duration: Mar 9 2015Mar 11 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherBehavior and Mechanics of Multifunctional Materials and Composites 2015
Country/TerritoryUnited States
CitySan Diego


  • Fluorescent Material
  • Mechanochromism
  • Polyurethane Elastomers
  • Strain Sensor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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