The use of ultrasound in textile wet processing offers many potential advantages. Previous work has shown that the use of ultrasonics in dyeing provides the following benefits: (1) energy savings and reduced processing times, (2) environmental improvements, (3) process enhancement, and (4) lower overall processing costs. A fundamental understanding of the operative processes are needed so that ...

This paper describes the fabrication and operation of fluidic broadband light sources for use "on-chip" in integrated microanalytical systems. These light sources consist of liquid-core, liquid-cladding (L2) microchannel waveguides with liquid cores containing fluorescent dyes, excited by incident light from an external halogen bulb. Simultaneous use of multiple fluorophores in a common solutio...

HIGHLIGHTS Peanut shell waste is an alternative adsorbent for the removal dyes. Ultrastructural visualization of peanut fiber structure shell, multi-layers and many linkages among fibers which could create to various pores with different sizes. The best eosin Y percentage had 87.7% in 25 g L-1 at 30 minute.

We have implemented continuous-wave two-photon excitation of near-UV absorbing fluorophores in a scanning near-field optical microscope (SNOM). The 647-nm emission of an Ar-Kr mixed gas laser was used to excite the UV-absorbing DNA dyes DAPI, the bisbenzimidazole Hoechst 33342, and ethidium bromide in a shared aperture SNOM with uncoated fiber tips. Polytene chromosomes of Drosophila melanogast...

Polymeric dyes are composed of optically chromophoric groups bound to or into polymers 1 which offer the advantage of allowing a range of physical properties, such as solubility, absorption, migration, and viscosity, that are tunable. They do not sublime, are nonabrasive,and generally have low toxicity. The range of products possible offered by the joining of the fields of polymer chemistry and...

Fluorescent materials emit light of higher wavelength, in case illumination with exhibiting lower wavelength. In many commercial applications, fluorescent transfer non-visible ultraviolet (UV) into visible light. By this an additional color effect and visibility is reached. One typical field for application fluorescence dyes the textile area. Here, products are manifold used offered, e.g. brigh...

We have studied the structure of nuclease-solubilized chromatin from Ehrlich ascites cells by flow linear dichroism (LD) using the anisotropic absorption of the DNA bases and of two intercalated dyes, ethidium bromide and methylene blue. It is confirmed that intercalation occurs preferentially in the linker part of the chromatin fiber, at binding ratios (dye/base) below 0.020. Using this inform...