Fluorescent silica colloids for study and visualization of skin care products.

Synthesis of Cone-Shaped Colloids from Rod-Like Silica Colloids with a Gradient in the Etching Rate.

We present the synthesis of monodisperse cone-shaped silica colloids and their fluorescent labeling. Rod-like silica colloids prepared by ammonia-catalyzed hydrolysis and condensation of tetraethyl orthosilicate in water droplets containing polyvinylpyrrolidone cross-linked by citrate ions in pentanol were found to transform into cone-shaped particles upon mild etching by NaOH in water. The dia...

Visualization of Horse Sickness virus by the Fluorescent antibody technique

Anatomy and physiology of newborns and introduction of various and specific skin care products

Full term newborns have a skin that rapidly develops towards adult skin. From the anatomical point of view, the differences are limited, but some changes at birth are responsible for the physiological differences between the skin of infants and adults. Newborns skin exhibits the same barrier function and absorption properties as adults, but external conditions for newborns may be different from...

Synthesis of monodisperse high-aspect-ratio colloidal silicon and silica rods.

We describe the synthesis and the physical properties of suspensions of colloidal silicon and silica rodlike particles. In addition to pure silicon and pure silica rods, we have also synthesized silicon rods with a silica shell and silica rods with a fluorescent silica layer. Pre-patterned p-type (100) silicon wafers were electrochemically etched in electrolyte solutions containing hydrogen flu...

Modification of mesoporous silica SBA-15 with different organic molecules to gain chemical sensors: a review

The recognition of the biologically and environmentally important ions is of great interest in the field of chemical sensors in recent years. The fluorescent sensors as a powerful optical analytical technique for the detection of low level of various analytes such as anions and metal cations have been progressively developed due to the simplicity, cost effective, and selectivity for monitoring ...