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In this work, we investigated the effects of drift region resistance on the temperature behaviors of RF power LDMOS transistors. Devices with various implant doses in the drift region were fabricated. Owing to the quasi-saturation effect, the transconductances at high gate voltages are less dependent on the temperature for low-drift-dose device. In addition, the maximum oscillation frequency exhibits...
Near-field images of Ag nanoparticles are studied using a near-field scanning optical microscopy (NSOM) operating at illumination mode with blue, green, and red probing lights. The obtained far-field intensity contrast between the nanoparticle and background strongly depends on the sizes of nanoparticles and the wavelength of probing light. Experimental NSOM images supported by theoretical 3-D finite-difference...
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