High resolution deformation and damage detection using fluorescent dyes

Samuel, B. A.; Demirel, Melik C.; Haque, Aman

doi:10.1088/0960-1317/17/11/020

Cited by 10 publications

(7 citation statements)

References 15 publications

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“…The molecular fluorescent probes are originally used in molecular biology, the pre -dispersed probes in the matrix are subjected to changes in the fluorescent intensity as a result of any topological changes in the matrix, it has been suggested that it can detect nanoscale cracks in polymers [158]. The major limitations of this technique are that it requires a uniform pre dispersion of the die and transparent polymer specimen in addition to geometry limitation of the specimen due to use of the fluorescent microscope.…”

Section: Microcracking Due To Hygrothermal Ageingmentioning

confidence: 99%

“…Furthermore, the signal measuring techniques require a highly trained operator to acquire and interpret the data, the signals are also corrupted by the structural and electrical noise in addition to attenuation and scattering.The uses of high resolution inspection techniques such as electron microscopy and electron probing are suitable only for certain specimen type and size and they are in general expensive to use. Another class of cracks monitoring techniques are based on employing fiber optic probe or fluorescent probe[4,151,158].…”

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confidence: 99%

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Cracks, microcracks and fracture in polymer structures: Formation, detection, autonomic repair

Awaja

Zhang

Tripathi

et al. 2016

Progress in Materials Science

262

116

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Polymers and polymer composites are susceptible to premature failure due to the formation of cracks and microcracks during their service time. Evolution of cracks and microcracks could induce catastrophic material failure. Therefore, the detection/diagnostics and effective repair of cracks and microcracks are vital for ensuring the performance reliability, cost effectiveness and safety for polymer structures. Cracks and microcracks, however, are difficult to detect and often repair processes are complex. Biologically inspired self-healing polymer systems with inherent ability to repair damage have the potential to autonomically repair cracks and microcracks. This article is a review on the latest developments on the topics of cracks and microcracks initiation and propagation in polymer structures and it discusses the current techniques for detection and 2 observation. Furthermore, cracks and microcrack repair through bio-mimetic self-healing techniques is discussed along with surface active protection. A separate section is dedicated to fracture analysis and discusses in details Fracture mechanics and formation.

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Section: Microcracking Due To Hygrothermal Ageingmentioning

confidence: 99%

mentioning

confidence: 99%

Cracks, microcracks and fracture in polymer structures: Formation, detection, autonomic repair

Awaja

Zhang

Tripathi

et al. 2016

Progress in Materials Science

262

116

View full text Add to dashboard Cite

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“…For such experimental systems, information from multiple optical indicators can be mathematically combined to further reduce the uncertainty of a position measurement and to enable an orientation measurement with low uncertainty. Related measurements have diverse applications in microtechnology, nanotechnology, biology, materials and metrology (Freeman, 2001;Ropp et al, 2013;Berfield et al, 2006Berfield et al, , 2007McGray et al, 2013;Samuel et al, 2007;Yoshida et al, 2011;Teyssieux et al, 2011;Ueno et al, 2010). Recently, constellations of fluorescent nanoparticles indicating the motion of microscopic actuators were localized and tracked, demonstrating the utility of the measurement method (McGray et al, 2013;Copeland et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Centroid precision and orientation precision of planar localization microscopy

McGray

Copeland

Stavis

et al. 2016

Journal of Microscopy

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The concept of localization precision, which is essential to localization microscopy, is formally extended from optical point sources to microscopic rigid bodies. Measurement functions are presented to calculate the planar pose and motion of microscopic rigid bodies from localization microscopy data. Physical lower bounds on the associated uncertainties - termed centroid precision and orientation precision - are derived analytically in terms of the characteristics of the optical measurement system and validated numerically by Monte Carlo simulations. The practical utility of these expressions is demonstrated experimentally by an analysis of the motion of a microelectromechanical goniometer indicated by a sparse constellation of fluorescent nanoparticles. Centroid precision and orientation precision, as developed here, are useful concepts due to the generality of the expressions and the widespread interest in localization microscopy for super-resolution imaging and particle tracking.

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“…Resembling these biological systems, optical mechanotransducers emerge as valuable engineered materials capable of converting mechanical events, either tension or pressure, into readable and processable optical outputs. Indeed, smart materials that tune their optical properties upon deformation or compression are of great interest within actual technology since they allow easy access to unique applications, from damage sensing to security inks to rewritable paper …”

Section: Introductionmentioning

confidence: 99%

“…

Indeed, smart materials that tune their optical properties upon deformation or compression are of great interest within actual technology since they allow easy access to unique applications, from damage sensing [2][3][4][5] to security inks [ 6,7 ] to rewritable paper. [ 8 ] Switching the material luminescence between two different emitting states, with either distinct color or intensity, by altering mechanically-shearing, grinding or rubbing-the microenvironment of fl uorophores within solid materials can serve as a general protocol for optical mechanotransduction.

…”

mentioning

confidence: 99%

Optical Mechanotransduction with Carbazole‐Based Luminescent Liquid Single‐Crystal Elastomers

García-Amorós

Velasco

2015

Macromol. Rapid Commun.

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Carbazole-based liquid single-crystal elastomers (LSCEs) are valuable fluorescent flexible materials to perform optical mechanotransduction under ambient conditions. Indeed, the covalent incorporation of carbazole derivatives into nematic LSCEs allows to tune their luminescence on demand under mechanical control in a quick and reversible fashion. Specifically, the fluorescence intensity for these materials can be switched back and forth in less than a second. Moreover, such a process can be performed several times without detecting any sign of fatigue in the system. In addition, these materials show excellent resistance to aging; 2 years after their preparation they exhibit the very same mechanofluorescent behavior as when freshly prepared. In fact, the here reported fluorescent systems are highly sensitive; the application of a force of 70 mN decreases the fluorescence in the elastomeric material by 7%. Thus, mechanical forces are attractive external stimuli to modulate the fluorescence of nematic elastomers rapidly and reversibly enabling thereby mechanotransduction.

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High resolution deformation and damage detection using fluorescent dyes

Cited by 10 publications

References 15 publications

Cracks, microcracks and fracture in polymer structures: Formation, detection, autonomic repair

Cracks, microcracks and fracture in polymer structures: Formation, detection, autonomic repair

Centroid precision and orientation precision of planar localization microscopy

Optical Mechanotransduction with Carbazole‐Based Luminescent Liquid Single‐Crystal Elastomers

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