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Photoacoustic imaging systems are now commercially available and built into traditional ultrasound hardware. However, unlike ultrasound imaging, the choice of coupling gel may potentially alter attenuation and fluency of the laser transmission. Hence, the objective of this study was to determine the attenuating effects of various ultrasound coupling gels on photoacoustic signals. Signals from 3 tissue...
We propose a nanoparticle trapping approach using a plasmonic nanostructure with inhomogeneous temperature fields. Results show that the thermal force, together with the near-field optical force, makes plasmonic nanostructures a flexible and wide-range manipulation strategy for nanoparticles. The thermal effect becomes important for trapping small nanoparticles and holding nanoparticles in a wider...
A new method based on spectrophotometry was established for detecting the trace arsenic in water. With the existence of strong acid, the trace concentrations of arsenic after concentrating by JM-33 resin reacted with disulfoantipyl methane to form a 1:2 complex which the maximum absorption wave lied at 325nm with an apparent molar absorptivity of 1.74×1041/(mol·cm). When the concentration of arsenic...
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