How single plasmon resonance band indicates spherical shape of nanoparticles?
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Answer:
· This absorption strongly depends on the particle size, dielectric medium and chemical surroundings [21, 22]. Small spherical nanoparticles (<20 nm) exhibit a single surface plasmon band [23]. ... The typical peak around 415 nm corresponds to the characteristic surface plasmon resonance of silver nanoparticles....................
Answer:
Easily determine individual particle size and your real size distribution, with similar accuracy to TEM, in a fraction of the time. You can measure the true sizes of your particles, not the hydro-dynamic diameter that laser based systems measure. The true distribution is automatically provided because a large number of particles are individually measured with high precision and directly compared with traceable calibration particles. There is no subjectivity in TRPS, no software guesstimates and no pre-determined distribution profile. Unlike DLS or NTA, you can have complete confidence that your particles sizes and profile are what the instrument provides. TRPS is simple to understand and to apply.