A force-feedback Phantom device, a custom-built vibrotactile dataglove, and embossed paper sheets are compared to detect different textures. Two types of patterns are used, one formed by different geometrical shapes, and the other with different grooves width. Evaluation shows that the vibrotactile dataglove performs better in the detection of textures where the frequency of tactile stimuli var...

the aim of this study was to find any structural differences between the digital pads of forelimbs and hind limbs as well as more careful investigation of the internal and external structures of the toe-pad. in this study, pad morphology and cytology in litoria caerulea is described using sem, tem and light microscopy. at the gross anatomical level, toe-pads in hind limbs were subdivided into m...

This study identifies a method for detection of irregularities such as open cracks or grooves on rotating stepped shaft with multiple discs, based the wavelet transforms. Cracks are represented reduction in diameter (groove) small width. Single well considered at locations stress concentration. Translational rotational response curves/mode shapes extracted from finite element analysis rotors an...

BACKGROUND The B-DNA major and minor groove dimensions are crucial for DNA-protein interactions. It has long been thought that the groove dimensions depend on the DNA sequence, however this relationship has remained elusive. Here, our aim is to elucidate how the DNA sequence intrinsically shapes the grooves. METHODOLOGY/PRINCIPAL FINDINGS The present study is based on the analysis of datasets...

In this paper are assumed micro-ridges and micro-grooves on t he journal and bearing sleeve surfaces. Friction on the boundary layer of the body moving in the oil at high Reynolds numbers may be decreased due to su ch a sculpturing of the surface. The grooved scale of the shark skin is an example of such tribological systems. There size ranges of the grooves are from 200 m to 400 m. The surface...

In order to analysis the difference in pollen morphological characteristics of hydrangea varieties and fertility, scanning electron microscope was used observe 10 hydrangea, parameters grains such as shape, ratio long short axes, germination groove, ornamentation polar surface characteristics. Observe grain aspect ratio, ornamentation, other 10  Hydrangea  macrophylla through analyze ...

To obtain a higher heat transfer in the low Reynolds number flows, wavy channels are often employed in myriad engineering applications. In this study, the geometry of grooves shapes is parameterized by means of four angles. By changing these parameters new geometries are generated and numerical simulations are carried out for internal fully developed flow and heat transfer. Results are compared...

The Toolbox approach to the automated design of microfluidic components is extended to include a genetic algorithm search of candidate designs. Performance metrics for characterizing surface delivery are described, and the software is applied to choose sequences of grooves to add to a rectangular microchannel in order to optimize surface delivery for pressure-driven flow. Initial searches using...

We present an approach for haptic exploration of unknown objects with dextrous robotic hands. The emphasis is on developing a robust manipulation process that allows fingers to traverse the surface of an object. The process consists of a sequence of phases in which some fingers are responsible for grasping and manipulating the object while others roll and slide over the object surface. The roll...