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Ultrastable vapor-deposited glasses display uncommon material properties. Most remarkably, upon heating they are believed to melt via a liquid front that originates at the free surface and propagates over a mesoscopic crossover length, before crossing over to bulk melting. We combine swap Monte Carlo with molecular dynamics simulations to prepare and melt isotropic amorphous films of unprecedendtly high kinetic stability. We are able to directly observe both bulk and front melting, and the crossover between them. We measure the front velocity over a broad range of conditions, and a crossover length scale that grows to nearly 400 particle diameters in the regime accessible to simulations. Our results disentangle the relative roles of kinetic stability and vapor deposition in the physical properties of stable glasses.
This article was published in the following journal.
Name: Physical review letters
Thin film stable glasses transform into a liquid by a moving front that propagates from surfaces or interfaces with higher mobility. We use calorimetric data of vapor-deposited glasses of different th...
To measure myopia, glasses wear and free glasses acceptance among minority and Han children in China.
Liquid crystal glasses use an intermittent occlusion technique and may improve compliance compared to adhesive patches. Previous studies support the effectiveness of intermittent occlusion therapy (IO...
The aim of the study was to estimate occupational radiation dose to the eye lens of radiologists and the dose reduction ratio of lead glasses during interventional radiology. Three interventional radi...
Stable glasses are formed during physical vapor deposition (PDV), through the surface-mediated equilibration process. Understanding surface relaxation dynamics is important in understanding the detail...
Two-month randomized trial comparing three groups: (November 2015 - January 2016).
Purpose of this study is to compare the ocular functional changes including pupil size, visual acuity, depth of focus, accommodative amplitude, visual field, contrast sensitivity, and ster...
This study is designed to evaluate the effectiveness of a novel amblyopia treatment - Intermittent occlusion therapy (IO-therapy) glasses (AmblyzTM) in treating severe amblyopia. Children...
This project is designed to test a lightweight, portable, computerized pair of glasses that will help reduce some of the cognitive deficits seen in patients who have suffered damage to the...
Purpose: To determine whether the use of reading glasses blocks the near work mediated increased incidence of myopia in healthy school children. Methods: SMART enrolled 115 ...
The front third of the eyeball that includes the structures between the front surface of the cornea and the front of the VITREOUS BODY.
A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness.
A genus of SPONGES in the family Petrosiidae, characterized by an ectosomal skeleton consisting only of an isotropic reticulation of single spicules or spicule tracts.
A pair of ophthalmic lenses in a frame or mounting which is supported by the nose and ears. The purpose is to aid or improve vision. It does not include goggles or nonprescription sun glasses for which EYE PROTECTIVE DEVICES is available.
The professional practice of primary eye and vision care that includes the measurement of visual refractive power and the correction of visual defects with lenses or glasses.