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The purpose of this study was to use thermal imaging camera to investigate the localised heating effect of high intensity focused ultrasound (HIFU), to monitor temperature rise in real time and accurately. In order to visualise thermally induced protein coagulation, a phantom of polyacrylamide (PAA) gel containing fresh egg albumin was used as tissue mimicking material. A high resolution thermal camera...
An effective means of achieving a portable, ultrafast blue-light source using a variety of nonlinear media is demonstrated. We investigate the relative merits of aperiodically-poled bulk and waveguide nonlinear crystals in comparison to periodically-poled structures.
Mie regime tweezing of 400 nm diameter particles is demonstrated for the first time using a violet laser-diode. Simultaneous tweezing and fluorescence of chromosomes dyed with DAPI is also described.
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