Measurements of absorbance and fluorescence emission were carried out on aqueous suspensions of polystyrene (PS) microspheres with a diameter of 2.5 µm using a spectrophotometer with an integrating sphere detector. The apparatus and the principles of measurements were described in our earlier publications. Microspheres with and without green BODIPY(@) dye were measured. Placing the suspension i...

Exopolymers are thought to influence bacterial adhesion to surfaces, but the time-dependent nature of molecular-scale interactions of biopolymers with a surface are poorly understood. In this study, the adhesion forces between two proteins and a polysaccharide [Bovine serum albumin (BSA), lysozyme, or dextran] and colloids (uncoated or BSA-coated carboxylated latex microspheres) were analyzed u...

A novel room‐temperature photodetector based on a silica‐microsphere optical resonator operating from the mid‐infrared to terahertz spectral region is reported. The sensor relies free‐space visible laser whose frequency locked center of whispering‐gallery mode (WGM). devised scheme automatically tracks any small change in microresonator's size and refractive index that occurs upon illumination ...

Abstract The diffraction limit has always been a fundamental barrier in optical science and engineering. It limits the minimum feature size surface patterning technologies such as lithography laser direct writing. also restricts resolution for imaging.

Bone tissue engineering offers promising alternatives to repair and restore orthopaedic disorders. Our laboratory has employed poly(lactic acid-co-glycolic acid) (PLAGA) microspheres to develop a three dimensional (3-D) porous bioresorbable scaffold with a pore structure similar to the structure of human trabecular bone. The success of osseous healing and integration of the engineered implants ...