Evidence and modeling of mechanoluminescence in a transparent glass particulate composite

Mechanoluminescence (ML) of a transparent alkali-phosphate glass composite with SrAl2O4:Eu, Dy particles is reported. Uniaxial compression experiments show the linear dependence of the mechanoluminescence intensity with the mechanical power. A theoretical model, based on the physics of delayed processes (in analogy of viscoelasticity), is proposed. This model accurately predicts the ML intensity changes induced by a complex mechanical loading and provides a convincing description of the mechanoluminescence response.

[1]  G. Yun,et al.  A predictive mechanoluminescence transduction model for thin-film SrAl2O4:Eu2+, Dy3+ (SAOED) stress sensor , 2014 .

[2]  B. P. Chandra,et al.  Microscopic theory of elastico-mechanoluminescent smart materials , 2014 .

[3]  B. P. Chandra,et al.  Impulsive excitation of mechanoluminescence in SrAl2O4:Eu, Dy phosphors prepared by solid state reaction technique in reduction atmosphere , 2013 .

[4]  Hong-wu Zhang,et al.  Preparation and mechanoluminescent properties of SrAl2O4:Eu film grown on silicon substrate using double buffer layers , 2013 .

[5]  B. P. Chandra,et al.  Strong luminescence induced by elastic deformation of piezoelectric crystals , 2013 .

[6]  Amir H. Gandomi,et al.  Stress sensing performance using mechanoluminescence of SrAl2O4:Eu (SAOE) and SrAl2O4:Eu, Dy (SAOED) under mechanical loadings , 2013 .

[7]  B. P. Chandra,et al.  Dynamics of the mechanoluminescence induced by elastic deformation of persistent luminescent crystals , 2012 .

[8]  B. P. Chandra,et al.  Suitable materials for elastico mechanoluminescence-based stress sensors , 2011 .

[9]  Yongliang Cheng,et al.  Preparation of SrAl2O4:Eu(2+), Dy(3+) fibers by electrospinning combined with sol-gel process. , 2010, Journal of colloid and interface science.

[10]  K. Sohn,et al.  Visualization of fractures in alumina ceramics by mechanoluminescence , 2005 .

[11]  Chao-Nan Xu,et al.  Strong elasticoluminescence from monoclinic-structure SrAl2O4 , 2004 .

[12]  Chao-Nan Xu,et al.  Influence of Eu, Dy co-doped strontium aluminate composition on mechanoluminescence intensity , 2002 .

[13]  Chao-Nan Xu,et al.  Artificial skin to sense mechanical stress by visible light emission , 1999 .

[14]  K. Nonaka,et al.  Intense visible light emission from Sr3Al2O6:Eu,Dy , 1998 .

[15]  Ann L. Brown.  The Advancement of Learning , 1994 .

[16]  Jackson,et al.  Stretched-exponential relaxation arising from dispersive diffusion of hydrogen in amorphous silicon. , 1987, Physical review letters.