Mechanoluminescence

Chandra, B. P.

doi:10.1007/978-1-4615-5361-8_10

Cited by 110 publications

(94 citation statements)

References 73 publications

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“…It can be excited by the mechanical or electrostatic interaction of dislocations with defect centers; electrification of crystal surfaces by the movement of charged dislocations; or thermal excitation in the stressed regions of solids such as colored alkali halides, II-VI compounds, alkaline-earth oxides, and metals [45]. Chandra et al [58] reported on the luminescence arising from the plastic deformation of colored alkali halides using pressure steps.…”

Section: Plastico-triboluminescencementioning

confidence: 98%

“…This can be by mechanical or electrostatic interaction of dislocations with defect centers, or by thermal excitation in the stressed regions of solids [45]. Examples of crystals that exhibit elastic-TL include X-or g-irradiated alkali halides and ZnS:Mn [45].…”

Section: Elastico-triboluminescencementioning

confidence: 99%

“…During fracto-TL, there is creation of charged surfaces at fracture (Fig. 5) due to processes such as piezoelectrification, movements of charged dislocations, and charged defect barodiffusion [45,65]. There is neutralization of these surface charges by the charge carriers or ions produced from the dielectric breakdown of the intervening gases and solids.…”

Section: Fracto-triboluminescencementioning

confidence: 99%

“…Interacting F centers hv Holes V 2 including strain rate, stress, density of F-centers, size of crystals, temperature, and luminescence efficiency [7,45,[60][61][62][63][64]. The following relationships show the effect of temperature on the TL response [58]:…”

Section: Shallow Trapsmentioning

confidence: 99%

“…Triboluminescence is a form of luminescence due to mechanical action or forces acting on a material. Triboluminescence may be divided into three types: namely (1) elastico-, (2) plastico-, and (3) fracto-triboluminescence [45].…”

Section: Light Emission By Tlmentioning

confidence: 99%

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Progress in triboluminescence-based smart optical sensor system

Olawale

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Sullivan

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Section: Plastico-triboluminescencementioning

confidence: 98%

Section: Elastico-triboluminescencementioning

confidence: 99%

Section: Fracto-triboluminescencementioning

confidence: 99%

Section: Shallow Trapsmentioning

confidence: 99%

Section: Light Emission By Tlmentioning

confidence: 99%

See 3 more Smart Citations

Progress in triboluminescence-based smart optical sensor system

Olawale

Dickens

Sullivan

et al. 2011

Journal of Luminescence

150

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Coatings

2002

Encyclopedia of Smart Materials

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Many materials emit light during the application of a mechanical energy. This phenomenon is usually referred to as mechanoluminescence (ML) or triboluminescence. The more historical term is “triboluminescence.” It stands for tribo‐induced luminescence, and this was the term used for more than a century to refer to light emission induced by any type of mechanical energy. The term “mechanoluminescence” was not proposed until 1978. The prefix “mechano” is correlated to the general mechanical way used for exciting luminescence, including concepts such as deformation, piezo, tribo, stress, cutting, grinding, rubbing, and fracto. In recent years mechanoluminescence (ML) has become the preferred nomenclature. Although the transfer of mechanical stress into light radiation is very complex, successes in experimental applications suggest possible uses of the ML phenomena in stress sensors, mechanical displays, and various smart systems. In general, ML can be divided into fractoluminescence (destructive ML) and deformation luminescence (nondestructive ML); these correspond to the luminescence induced by fracture and mechanical deformation of solid, respectively. Roughly 50% of solid materials gives fractoluminescence by fracture: the well‐known materials include sugar, molecular crystals, alkali halides, quartz, silica glass, phosphors, piezoelectric complex, metals, various minerals, and biomaterials. Recently, the fractoluminescence of rare‐earth complexes was investigated in order to build smart damage sensors capable of simple real‐time detection of the magnitude and location of structural damage within materials. Deformation luminescence can be induced by mechanical deformation without fracture, and this is of interest in nondestructive evaluation. Deformation luminescence can be further divided into plasticoluminescence and elasticoluminescence. The former is produced during plastic deformation of solids, where fracture is not required, and the later is produced during the elastic deformation of solids where neither plastic deformation nor fracture is required. Nondestructive ML due to plastic deformation has been observed in several materials such as colored alkali halides, II–VI semiconductors, and rubbers. However, ML in the elastic region has been observed only for the irradiated alkali halides, and some piezoelectric materials. So far nondestructive luminescence intensities of materials have been reported to be too weak and difficult to repeat, and this has deferred any practical application of the phenomenon. For application of ML in developing new materials, repetitive ML must occur with undiminished intensity.

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Color Manipulation of Mechanoluminescence from Stress‐Activated Composite Films

et al. 2013

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The prospective application of luminescence to imaging devices is shown using a combination of color-tunable and patternable mechanoluminescent materials. A white light source is demonstrated by using an alternative color tuning method, induced under high vibration conditions. As the implementation is fairly straightforward, it is expected that the present results will find a number of potential uses in current industrial applications.

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Mechanoluminescence

Cited by 110 publications

References 73 publications

Progress in triboluminescence-based smart optical sensor system

Progress in triboluminescence-based smart optical sensor system

Coatings

Color Manipulation of Mechanoluminescence from Stress‐Activated Composite Films

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