Excitation of triboluminescence by deformation of single crystals

Alzetta, G.; Chudáček, I.; Scarmozzino, R.

doi:10.1002/pssa.19700010417

Cited by 117 publications

(62 citation statements)

References 11 publications

(2 reference statements)

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“…Wick [3] also reported the ML emission during deformation of coloured alkali halide crystals. The linear dependence of light emission on the strain rate in -irradiated KBr, NaCl and LiF crystals was reported by Metz et al [4] and Alzetta et al [5]. The decrease in ML intensity with increasing rate of compression was reported by Pirog and Sujak [6].…”

Section: Introductionmentioning

confidence: 58%

Correlation between deformation bleaching and mechanoluminescence in coloured alkali halide crystals

et al. 2000

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The present paper reports the correlation between deformation bleaching of coloration and mechanoluminescence (ML) in coloured alkali halide crystals. When the -centre electrons captured by moving dislocations are picked up by holes, deep traps and other compatible traps, then deformation bleaching occurs. At the same time, radiative recombination of dislocation captured electrons with the holes gives rise to the mechanoluminescence. Expressions are derived for the strain dependence of the density of colour centres in deformed crystals and also for the number of colour centres bleached. So far as strain, temperature, density of colour centres, and volume dependence are concerned, there exists a correlation between the deformation bleaching and ML in coloured alkali halide crystals. From the strain dependence of the density of colour centres in deformed crystals, the value of coefficient of deformation bleaching is determined and it is found to be 1.93 and 2.00 for KCl and KBr crystals, respectively. The value of ( · ) is determined from the strain dependence of the ML intensity and it is found to be 2.6 and 3.7 for KCl and KBr crystals, respectively. This gives the value of coefficient of deformation generated compatible traps to be 0.67 and 1.7 for KCl and KBr crystals, respectively.

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Section: Introductionmentioning

confidence: 58%

Correlation between deformation bleaching and mechanoluminescence in coloured alkali halide crystals

et al. 2000

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“…These results follow Eqs. (15) and (16). The measurement of ML was done following the technique reported previously [39], in which the ML was induced by placing a load onto the crystal and the ML intensity was measured using a photomultiplier tube connected to an X-Y recorder.…”

Section: Article In Pressmentioning

confidence: 99%

“…Therefore, the materials exhibiting ML during their elastic deformation may be very useful and find applications in pressure sensors and other electronic devices. It has been reported that X or g-irradiated alkali halide crystals [14][15][16], Mn-doped zinc sulphide [16][17][18] and a few polymers [19,20] show ML when they are deformed elastically. Whereas the ML produced by the plastic deformation and fracture of coloured alkali halide crystals has been studied in detail [1][2][3], least attention has been paid to the ML induced by their elastic deformation.…”

Section: Introductionmentioning

confidence: 99%

Mechanoluminescence induced by elastic deformation of coloured alkali halide crystals using pressure steps

Chandra

2008

Journal of Luminescence

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“…Pure zinc-sulfide is a noncentric [7] and exhibit ML [8]. Yet, when zinc sulfide doped with small percentage of strongly luminescent transition metal ions such as copper, manganese [9][10][11][12][13] and even silver [14], then it become strong mechanoluminescent under deformation. ZnS doped with Cu,Cl is found drastic enhance the mechanoluminescence (ML) properties [14].…”

Section: Introductionmentioning

confidence: 99%

Study of Mechanoluminescent ZnS: Cu, Cl Phosphor for Developing Sensors

Sanodiya¹

2017

IJRASET

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Luminescence due to fracture is known as fracto-Mechanoluminescence (FML). Recently, fracto-luminescence phenomenon has enabled us to explore various advanced sensor applications such as pressure sensors, damage sensors, etc. This article reports the FML of ZnS: Cu, Cl phosphor prepared by solid state reaction method using nitrogen atmosphere. When ZnS: Cu, Cl phosphor is deformed impulsively by the impact of a moving piston then, initially mechanoluminescence (ML) intensity increases with time, attains a peak value and then decreases with time. The semi-log plot of the ML intensity versus (t-tm) gives the negative slope. The peak ML intensity increases linearly with increasing impact velocity. ML intensity is also increases linearly with increasing mass of the phosphor. The total ML intensity initially increases with increasing impact velocity and then it tends to attain a saturation value for higher values of the impact velocity of piston. The ML and photoluminescence (PL) spectra are lies at 532nm. The ZnS doped Cu; Cl is very cheap and suitable material for developing sensors.

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Excitation of triboluminescence by deformation of single crystals

Cited by 117 publications

References 11 publications

Correlation between deformation bleaching and mechanoluminescence in coloured alkali halide crystals

Correlation between deformation bleaching and mechanoluminescence in coloured alkali halide crystals

Mechanoluminescence induced by elastic deformation of coloured alkali halide crystals using pressure steps

Study of Mechanoluminescent ZnS: Cu, Cl Phosphor for Developing Sensors

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