Table 1. Number of AuNRs per Unit Volume ν Estimated by Eq 18, and Average Number of AuNRs per μm³ Measured by ICP–AES for Different Weight Concentration^a.

cAuNR [mg mL–1]b	ν [m–3]c	NAuNRs [μm–3]a
0.1	3.1 × 1023	0.7
1	3.1 × 1024	7
1.3b	4.03 × 1024b	9
50	15.5 × 1025	345

^aThe As-Prepared AuNRs have the Concentration c_AuNR = 1.3 mg mL^–1.

^bAs-prepared AuNRs–CTAB dispersion measured by ICP–AES.

^cCalculated by eq 18, rod dimensions measured by TEM (V_AuNR = 17 220.16 nm³), gold density ρ_Au = 19.3 g/cm³, and M_n^Au = 196.96 g mol^–1.