This report presents a 55-year-old woman who underwent 2 Teflon injections in 1971 for a patulous eustachian tube. The patient returned in 2006 with a bloody left otorrhea. A positron-emission tomography-CT scan demonstrated a 2-cm hypermetabolic parapharyngeal mass, initially interpreted as a skull base tumor. Repeat neck CT confirmed a 2-cm hyperattenuated left parapharyngeal granulomatous ma...

We fabricated a novel hyperspectral Raman imaging spectrometer that, for the first time, uses a photonic-crystal wavelength-selecting device to select a narrow-wavelength spectral interval. The photonic crystal consists of an array of highly charged, monodisperse polystyrene particles that self-assemble into a face-centered cubic crystal. The photonic crystal Bragg-diffracts a narrow spectral i...

Fourier transform infrared spectroscopy (FTIR) is widely used in gas detection of SF6 decomposition components. A cell an important element the system, which can directly affect accuracy and sensitivity detection. During long-term use cell, components may be adsorbed on inner wall affects results life cell. Therefore, study adsorption between material component great significance for improving ...

An antireflection overcoat for opaque baffle coatings in the FIRlsubmillimeter region has been made from a simple Teflon spray-on lubJricant. The Teflon overcoat reduced the specular reflectance of four different c,paque coatings by nearly a factor of two. Analysis, based on the interfElrence term of a reflecting-layer model, indicates that in the submillimeter region the reduced reflectance de...