Photothermal Signal Distribution Analysis (PhoSDA): Supplement
نویسندگان
چکیده
The amplitude Φ0, which has the units of an inverse length unit, quantifies the rel. PT signal of the particle. Thus, for small particles it scales with the volume, i.e. Φ0 ∝ R3. The maximum signal Φmax is obtained at z+ = [z0 − δpp] /2 while the minimum signal Φmin is obtained at z− = [z0 + δpp] /2 with the positive axial peak-to-peak distance δpp of the detection volume eqn (1) given as δ2 pp = z2 0 + γ 2ω2 ρ. The maximum signal is Φmax = Φ (z+) while the minimum signal is Φmin = Φ (z−). Equation 1 may be inverted to yield the radius ρ as a function of z for a given signal value Φ:
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