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Capacitive micromachined ultrasonic transducers (CMUTs) have prospective clinical applications in ultrasound diagnostics and therapy. We have modeled, fabricated, and characterized CMUT arrays suitable for intravascular and gastrointestinal use. The elements of the CMUT arrays are connected from the back side of the array by through-silicon-vias (TSVs) with a pitch of 25 μm. In the reported work,...
A deep etched 1D Distributed Bragg Reflector (DBR) cavity in GaN-AlN-Sapphire has been analytically modelled and simulated using 2D FDTD. A 3rd-order DBR has also been modelled including dye loaded polymer layer which can be used for emission enhancement characterization. A structure fabricated using a hybrid Electron Beam-Focused Ion Beam method was assessed using micro-photoluminescence.
We obtained single-mode lasing in GaN nanowires by using a limited number of cavity modes and a narrow gain spectra. The fabrication was achieved by a top-down technique in high quality GaN films.
A deep etched 1D Distributed Bragg Reflector cavity in GaN-AlN-Sapphire has been analytically modeled and simulated using 2D FDTD. A structure fabricated using a hybrid Electron Beam-Focused Ion Beam method was assessed using microphotoluminescence.
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