Page 152 - Bio Engineering Approaches to Cancer Diagnosis and Treatment

150 CHAPTER 6 Laser-assisted cancer treatment

FIGURE 6.6 Schematic of set up to measure absorption cross-section.
Scattering profile of (GO at different concentration, (C) black absorber [75].

where Q is the heat generated during laser emission (J), m is the mass of the nanopar-
/
(J/kg K)
ϕ
dQ/dtV=µa × ticle (kg)], C is the specific heat capacity (J/kgK). By substituting dQ dt = µ × and
a
/
m/V=ρ mV = ρ in the equation above: V
dT t () = µ × () (6.21)
ϕ t
a
dT(t)dt=µa ×(t)ρC dt ρC
−1
2
−1
µa  where µ is the absorption coefficient (L mol cm ), ϕ is laser beam fluency (W/m ),
a
3
ρ ρ is material density (kg/m ). By substituting analytic signals for laser fluency and