Abstract A fiber-optic temperature sensor based on fiber tip polystyrene microsphere is proposed. The structure can be formed simply by placing and fixing a the center of an optical tip. Since has much larger thermal expansivity, used for high-sensitive measurement. By illuminating with broadband light source through Fabry-Perot interference between front back surfaces microsphere, phase differ...

A porous-wall hollow glass microsphere (PW-HGM) was investigated as an optical resonator for chemical vapor sensing. A single mode optical fiber taper was used to interrogate the microresonator. Adsorption of chemical molecules into the nanosized pores induced a refractive index change of the thin wall and thus a shift in its resonance spectrum. The PW-HGM resonator had shown higher vapor detec...

Doppler cooling the center-of-mass motion of an optically levitated microsphere via the velocity-dependent scattering force from narrow whispering gallery mode resonances is described. Light that is red detuned from the whispering gallery mode resonance can be used to damp the center-of-mass motion in a process analogous to the Doppler cooling of atoms. The scattering force is not limited by sa...

A new method for studying the dynamics of a sessile drop by atomic force microscopy (AFM) is demonstrated. A hydrophobic microsphere (radius, r ∼ 20-30 μm) is brought into contact with a small sessile water drop resting on a polytetrafluoroethylene (PTFE) surface. When the microsphere touches the liquid surface, the meniscus rises onto it because of capillary forces. Although the microsphere vo...

The purpose of this study was to develop a more efficient fluorescent microsphere method to facilitate the rapid use of the histological technique and to enable its use in large tissue regions. Using fluorescent plate/slide imaging technology and automated detection and analysis software, we were able to rapidly image, detect, and count 3 separate microsphere colors in 200 microm thick tissue s...