Publisher’s Note: Glassy Dynamics in Disordered Electronic Systems Reveal Striking Thermal Memory Effects [Phys. Rev. Lett.<b>117</b>, 116601 (2016)]

Eisenbach, Ariel; Havdala, T.; Delahaye, Julien; Grenet, T.; Amir, Ariel; Frydman, A.

doi:10.1103/physrevlett.117.139901

Cited by 4 publications

(5 citation statements)

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“…Под действием внешних воздействий часть электронов может переходить из одного состояния в другое. Экспериментальное изучение электропроводности разупорядоченных металлов показало, что времена её релаксации могут существенно превышать времена релаксации электронов в чистых металлах [12].…”

Section: механикаunclassified

“…где t -время релаксации электрона между связанным и свободным состояниями, S -некоторый генерационный источник, стимулирующий переход электронов из связанного состояния в свободное. Переход электронов между связанным и свободным состояниями носит активационный характер [12]. В соответствии с результатами работы по электропроводности разупорядоченных металлов [12] будем считать, что процессы перехода электронов происходят в соответствии с законом Аррениуса.…”

Section: механикаunclassified

“…Переход электронов между связанным и свободным состояниями носит активационный характер [12]. В соответствии с результатами работы по электропроводности разупорядоченных металлов [12] будем считать, что процессы перехода электронов происходят в соответствии с законом Аррениуса. Тогда для источника S можно использовать выражение…”

Section: механикаunclassified

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On the problem of thermoacoustics of conductive materials under laser irradiation

Морозов

Muratikov

Semenov

et al. 2019

Доклады Академии наук

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Within the framework of the one-temperature model of thermoelasticity, the analysis of the effect of electon localization processes on the thermoelastic response of conductors under pulsed laser irradiation is performed. It is shown that the localization of electrons can lead to a significant tightening of the deformation processes in conductors compared with the processes that develop according to the usual thermoelastic mechanism.

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Section: механикаunclassified

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On the problem of thermoacoustics of conductive materials under laser irradiation

Морозов

Muratikov

Semenov

et al. 2019

Доклады Академии наук

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“…21 Similar slow relaxations have been observed in a wide variety of out-of-equilibrium disordered systems such as glassy polymers below the glass transition temperature, 22,23 amorphous metals, [24][25][26] granular media, 27,28 frictional interfaces, 29 crumpled sheets 11,30 and electron glasses. 31 Apart from theoretical implications, due to their vast use in technology, slow timedependent structural or geometrical changes are particularly important in the case of polymer glasses. Usually, the time-scale of relaxation of such systems is much larger than those of changes in the external constraints on the system.…”

mentioning

confidence: 99%

Relaxation Constant in the Folding of Thin Viscoelastic Sheets

Farain

2020

Phys. Rev. Applied

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If one folds a thin viscoelastic sheet under an applied force, a line of plastic deformation is formed which shapes the sheet into an angle. We determine the parameters that define this angle experimentally and show that no matter how much load one applies or what is the thickness of the sheet, it is impossible to make angles less than a certain minimum angle in a definite time. Moreover, it is shown that regardless of whether the sheet is released freely afterward or kept under the load, a robust logarithmic relaxation follows the first deformation immediately. The slope of this logarithmic process is the same in both cases and depends neither on the applied force nor on the thickness of the sheet, which indicates it is directly a probe of molecular mobility of the material. We measure this intrinsic relaxation constant ~0.01 and ~5.7 for Mylar and paper sheets, respectively. We also suggest that the observed minimum angle of folding can be defined as a characteristic index for the plasticity of different materials.Folding, as a seemingly trivial way of making multilayer stacks or three-dimensional objects from thin sheets, is an everyday experience. While simple at first glance, folding problems arise in a variety of living organisms such as biological membranes, insect wings, and the cortical brain structure; as well as in artistic and technological applications ranging from decorative art and fashion to space solar panels. For instances, the shape of viral shells are determined by the energies of folding; 1, 2 the cerebral cortex expansion occurs with increasing degrees of folding of the cortical surface; 3 creasing properties of fabrics like crease-resistance and recovery are very important for designing skirts, suits, trousers, and ladies' dresses; and engineers seek to design series of solar panels which can change between folded stowed and planar configurations. 4 Other examples which require a better understanding of folding and have recently attracted a great deal of attention are origami designed structures 5-9 and crumpled sheets, 10-12 consisting respectively of ordered and random networks of creases created in a sheet. Mechanical properties of such systems are determined by not only the network but also by the response of each of the building block creases which can be considered as an elastic hinge of specific stiffness connecting flexible panels. 13 Furthermore, next-generation soft robots 14, 15 and wearable electronics 16 include thin 2D elastomeric parts that undergo continual bending and folding during use. Understanding the structural and geometrical changes, force production, as well as non-linear and time-

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“…2, b), полученном при сжимающем напряжении 57 ± 3 MPa, видны диаметрально расположенные светлые и темные области, соответствующие известному распределению внутренних напряжений в пластине с отверстием радиуса a при одноосном нагружении. Такое распределение в полярных координатах r и ϑ описывается в соответствии с решением задачи Кирша [12] В реальных металлах при наличии дефектов и неупорядоченных областей при внешних воздействиях может происходить существенная обратимая перестройка их электрон-решеточной структуры [14]. В этом случае концентрация свободных электронов в металле не остается неизменной, что приводит к изменению давления электронного газа δ p e .…”

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Влияние Механических Напряжений В Пластине Из Алюминиевого Сплава Д16 На Генерацию Акустических Колебаний Лазерным Излучением

Глазов¹,

Муратиков²

2019

Письма В Журнал Технической Физики

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The process of laser generation of ultrasound in metals with internal mechanical stresses is analyzed. The features of the photoacoustic signal behavior near the hole in the D16 alloy plate when subjected to mechanical stresses are investigated. The discrepancy between the experimental results and the predictions of the thermodynamic model of the dependence of the coefficient of thermal expansion on mechanical stresses has been revealed. To correctly describe the features of the signal behavior in real metals, it was proposed to take into account the effect of the electronic subsystem on the laser generation of acoustic vibrations.

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Publisher’s Note: Glassy Dynamics in Disordered Electronic Systems Reveal Striking Thermal Memory Effects [Phys. Rev. Lett.117, 116601 (2016)]

Abstract: This corrects the article DOI: 10.1103/PhysRevLett.117.116601.

Cited by 4 publications

References 0 publications

On the problem of thermoacoustics of conductive materials under laser irradiation

On the problem of thermoacoustics of conductive materials under laser irradiation

Relaxation Constant in the Folding of Thin Viscoelastic Sheets

Влияние Механических Напряжений В Пластине Из Алюминиевого Сплава Д16 На Генерацию Акустических Колебаний Лазерным Излучением

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