We demonstrate three-dimensional trapping of low-index particles (20-microm-diameter hollow glass spheres in water) by using a single, strongly focused, stationary dark optical vortex laser beam. The holographically generated vortex, which is similar to a TEM(01)* mode beam, was also used to trap and form ring patterns of high-index particles.

We studied the dynamic behavior of a single semiflexible ring in linear chain matrix based on coarse-grained model using molecular dynamics simulation approach. found that chains’ hollow centers are frequently filled with chains. However, as rigidity chains increases, arranged parallel to each other and temporary caged. As result, swing movement normal direction is significantly limited, relaxa...

This paper is related to textile industry especially to Yarn manufacturing process. Textile is one of the biggest manufacturing industries in India.Defects rate of product plays a very important role for the improvement of yield and financial conditions of any company. Actually defects rate causes a direct effect on the profit margin of the product and decrease the quality cost during the manuf...

We report the first supercontinuum generated in a gas-filled single-ring hollow-core PCF. When pumped with ultrashort pulses at 1500 nm, the emitted spectrum spans three octaves from the deep ultraviolet to the mid-infrared. OCIS codes: (060.0060) Fiber optics and optical communications; (190.0190) Nonlinear optics (320.0320) Ultrafast optics

Spyn is a system for knitters to record, recall, and share information surrounding the process of handcraft. Using the yarn as a timeline of a knit's creation, Spyn allows knitters to associate digital annotations to knit yarn. The current prototype uses patterns of infrared ink printed on yarn in combination with computer vision techniques to associate locations in knit fabric with audio and v...

Physical properties of cotton yarns are affected by the characteristics of cotton fibers such as fineness, length, maturity and strength. This relationship has been worked out by means of multivariable regression and stepwise method for an open-end spun (NeC 20) cotton yarn. Moreover, with the help of linear programming, it was made possible to determine the percentage of different cottons in t...