High strain-rate response of spiropyran mechanophores in PMMA Hemmer, James R. ; Smith, Patrick D. ; van Horn, Matt ; Alnemrat, Sufian ; Mason, Brian P. ; de Alaniz, Javier Read ; Osswald, Sebastian ; Hooper, Joseph P. Abstract Publication: Journal of Polymer Science B Polymer Physics Pub Date: October 2014 DOI: 10.1002/polb.23569 Bibcode: 2014JPoSB..52.1347H