نتایج جستجو برای: silica microsphere
تعداد نتایج: 40337 فیلتر نتایج به سال:
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...
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...
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