– The three-dimensional optical anisotropy of photo-buffed dye-doped polymer films and the resulting orientation imparted to a liquid crystal in contact are probed using total internal reflection. Although the linearly polarized writing light generates a uniaxial distribution of dye molecules, the polymer films are biaxial, a result of symmetry breaking by the film surface. Photo-induced anisot...

Diamond-like carbon (DLC) material is used in blood contacting devices as the surface coating material because of the antithrombogenicity behavior which helps to inhibit platelet adhesion and activation. In this study, DLC films were doped with boron during pulsed plasma chemical vapor deposition (CVD) to improve the blood compatibility. The ratio of boron to carbon (B/C) was varied from 0 to 0...

Electrospinning has been proven as a highly versatile fabrication method for producing nano-structured fibres with controllable morphology, of both the themselves and void structure mats. Additionally, it is possible to use heteroatom doped polymers or include catalytic precursors in electrospinning solution control surface properties fibres. These factors make an ideal production electrodes fl...

Recent advances in surface engineering and soft lithography provide tools to fabricate patterned surfaces and microfluidic devices with dimensions comparable to the sizes of single mammalian cells. These technologies enable the studies of individual cells on spatially well-defined, patterned surfaces, and in contact with patterned liquid media. They provide information about cells impossible to...

Purpose To evaluate the polymer doped rods behavior with bioactive glass and hydroxyapatite for possible application as a fracture fixing method. Methods Twenty eight Rattus norvegicus Wistar underwent bone defect for access to the femoral medullary canal and distributed into three experimental groups: group A - doped castor bean polymer with bioactive glass; group B - castor bean polymer and; ...

The properties of molecularly doped films of conjugated polymers are explored as the crystallinity of the polymer is systematically varied. Solution sequential processing (SqP) was used to introduce 2,3,5,6-tetrafluoro-7,7,8,8tetracyanoquinodimethane (F4TCNQ) into poly(3-hexylthiophene-2,5-diyl) (P3HT) while preserving the pristine polymer’s degree of crystallinity. X-ray data suggest that F4TC...

Dielectric behavior of doped poly (methyl acrylate) (PMA) Conducting polymer has been investigated in electret state. The permittivity and loss factor have been obtained at varying temperatures from 30 to 230C and different frequencies 05,10,25 and 50 kHz for different electrode configurations of doped poly (methyl acrylate) (PMA) conducting polymer films of 25μm thickness. The capacitances are...

This work focuses on the characteristics of polymer blend electrolytes based on corn starch and chitosan doped with ammonium iodide (NH4I). The electrolytes were prepared using the solution cast method. A polymer blend comprising 80wt% starch and 20wt% chitosan was found to be the most amorphous blend and suitable to serve as the polymer host. Fourier transform infrared spectroscopy analysis pr...

We recently reported the discovery of soliton-like electrogenerated chemiluminescence (ECL) waves from pure conjugated polymer films and gold-nanoparticles-doped polymer films. In addition to a more detailed study of these polymer systems by changing the film thickness and the distribution of local leaks, we also apply the ECL wave phenomenon to polymer blends of conjugated and nonconjugated po...

Abstract Flexible sensors play an important role in collecting stimuli information and sending them to a central processing unit or cloud for analysis decision‐making. As much is needed be collected, the fabrication of multiparameter flexible becoming increasingly urgent. To this end, conducting polymer‐based composites have been proven as promising materials developing pressure‐temperature dua...