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For the first time, an integrated thermal characterization scheme that generates a full two-dimensional temperature map of GaN lateral devices has been developed. Through calibration and integration of micro-Raman thermometry, thermoreflectance thermal imaging, and infrared thermography, the accuracy of these techniques has been demonstrated to significantly improve, in addition to the complete thermal...
In this study, pioneering research was performed on GaN p-i-n diodes for the first ever assessment of surface temperature distribution by incorporating the use of infrared (IR) thermography, thermoreflectance thermal imaging, Raman thermometry, and thermal simulations. Each technique was advanced in order to obtain self-consistent results with higher accuracy. A two-temperature emissivity calibration...
We report a simple low-cost gold nanoparticle (AuNP)-loaded surface-enhanced Raman spectroscopy (SERS) paper substrate. With 1 mM Rhodamine B, five 2.0 wt% sodium carboxymethyl cellulose (CMC)-AuNP printing cycles resulted in higher SERS intensities and reproducibility compared to commercial SERS substrate.
Local density of states of plasmons in a cylindrical silicon-SiO2-silver system induced by different polarization electric fields is analyzed numerically. Open source finite-difference time-domain method code is used. The result shows TMz polarization induces more plasmons than TEz polarization.
We have measured polarized Raman spectra of MnWO4 single crystals at low temperatures, and studied the temperature dependence of the various phonon modes. From our Raman studies of the MnWO4, a new transition temperature, ∼180 K, was found. We have completely assigned the symmetries of the 18 observed Raman modes of the MnWO4, as expected from a group theoretical analysis. These Raman modes have been...
We demonstrate the first 10 GHz clock-rate, differential-phase-shift-keyed quantum key distribution system on a 10 Gb/s multi-user WDM-PON network. A dual feeder fiber scheme is used to reduce spontaneous Raman scattering-induced inter-channel cross-talk.
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