Table 1 Effects of the surrounding medium and morphology of NPs on intracellular plasmonics

From: Using intracellular plasmonics to characterize nanomorphology in human cells

Cell line

Nanospheres

Nanostars

Swarna Bhasma

Spherical

Branched

Nonuniform

A549 cells

Plasmonic shift (Δλ)a

~44 ± 9 nm

~41 ± 7 nm

~90 ± 14 nm

Broadness changeb

+13.6%

−8.9%

+19.1%

Q-factor (inside cells)c

4.55

2.68

4.45

HepG2 Cells

Plasmonic shift

~57 ± 8 nm

~48 ± 10 nm

~54 ± 10 nm

Broadness change

+9.1%

+19.6%

+4.3%

Q-factor

4.72

2.46

3.82

  1. a\(\Delta \lambda = \lambda _{{\mathrm{inside}}} - \lambda _{{\mathrm{outside}}}\)
  2. b\(\Delta w = 100 \times \frac{{w_{{\mathrm{inside}}\,{\mathrm{cytoplasm}}} - w_{{\mathrm{periphery}}\,{\mathrm{of}}\,{\mathrm{cells}}}}}{{w_{{\mathrm{periphery}}\,{\mathrm{of}}\,{\mathrm{cells}}}}}\) (\(w\): full width at half maximum)
  3. c\(Q = \frac{\lambda }{w}\) (λ: peak frequency, \(w\): full width at half maximum)
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