We study fracturelike flow instabilities that arise when water is injected into a Hele-Shaw cell filled with aqueous solutions of associating polymers. We explore various polymer architectures, molecular weights, and solution concentrations. Simultaneous measurements of the finger tip velocity and of the pressure at the injection point allow us to describe the dynamics of the finger in terms of...

The finger motions and quickness of braille reading were investigated by way of recording the finger tip pressure on the braille and its time process. Subjects were separated into two groups. One group consisted of 5 experienced blinds and the other group consisted of 5 blinds who were beginners in braille reading. The comparison of obtained results from two groups gave some evidence for the fo...

Zinc oxide tape has been used successfully in 40 patients to treat finger-tip and soft-tissue injuries which had not healed with conventional dressings. It is easy to apply, cheap and readily accepted by both patients and staff. The authors strongly recommend this simple dressing for the slow-to-heal finger-tip injury.

For this experiment a visual illusion was created in which the participant's finger looked and felt as though it was being stretched to twice its normal length until it snapped and the tip came off. It was then stabbed with virtual weapons while skin conductance was measured. Sometimes the fingertip moved under the participant's own control and sometimes it moved independently. Curiously, detac...

We make a numerical study of the effect that spatial perturbations have in normal Saffman-Taylor fingers driven at constant pressure gradients. We use a phase field model that allows for spatial variations in the Hele-Shaw cell. We find that, regardless of the specific way in which spatial perturbations are introduced, a lateral instability develops on the sides of the propagating Saffman-Taylo...

This paper proposes a method to recognize the tip of a finger and space touch hand gesture using an infrared camera in a smart device environment. The proposed method estimates the tip of a finger with a curvature-based ellipse fitting algorithm, and verifies that the estimated object is indeed a finger with an ellipse fitting rectangular area. The feature extracted from the verified finger tip...