We study the indentation of a thin elastic film floating at the surface of a liquid. We focus on the onset of radial wrinkles at a threshold indentation depth and the evolution of the wrinkle pattern as indentation progresses far beyond this threshold. Comparison between experiments on thin polymer films and theoretical calculations shows that the system very quickly reaches the far from thresh...

An approach for the intelligent determination of the appeared wrinkles in the robotized handling of non-rigid materials such as fabrics is presented. A machine vision system reads the wrinkles and a robotic manipulator controller is used to eliminate the wrinkles of a fabric. The machine vision system is used in order to capture an image of the wrinkled or wrinkle-free fabric. The direction of ...

Wrinkle simulation with skin modeling and deformation are extremely important in enhancing the realism of human figure models. In this paper we present a model which simulates the skin deformation based on a biomechanic model and generates dynamic wrinkles rendered with texture image. The biomechanical model considers the skin as a membrane undergoing large deformations and puts the local coord...

Facial deformity in Crouzon syndrome is characterized by exophthalmos, exorbitism, mild hypertelorism, and maxillary hypoplasia with a Class III occlusion. The Göteborg craniofacial unit corrects this deformity in selected patients by the 2-stage procedure of "spectaclesplasty" followed by a Le Fort I maxillary osteotomy at skeletal maturity. "Spectacles" is a reference to the bilateral circumf...

PURPOSE To report a rare case of periorbital emphysema concurrent with cervicofacial and mediastinal emphysema in an elderly woman who underwent upper gastrointestinal endoscopy for chronic liver disease. CASE REPORT An elderly woman with decompensated chronic liver disease presented with features of periorbital, facial, and mediastinal emphysema, characterized with crepitant swelling over th...

BACKGROUND There exists some ambiguity regarding the exact anatomical limits of the orbicularis retaining ligament, particularly its medial boundary in both the superior and inferior orbits. Precise understanding of this anatomy is necessary during periorbital rejuvenation. METHODS Sixteen fresh hemifacial cadaver dissections were performed in the anatomy laboratory to evaluate the anatomy of...

On length scales from nanometres to metres, partial adhesion of thin films with substrates generates a fascinating variety of patterns, such as 'telephone cord' buckles, wrinkles, and labyrinth domains. Although these patterns are part of everyday experience and are important in industry, they are not completely understood. Here, we report simulation studies of a previously-overlooked phenomeno...

Previous work has demonstrated the correlation of periorbital perfusion and stress levels in human beings. It has also been suggested that periorbital perfusion can be quantified through processing of thermal video. The idea has been based on the fact that skin temperature is heavily modulated by superficial blood perfusion. Proof of this concept was established for two different types of stres...