Table 1. Comparison of beads’ diffusion, diameter, and aggregate fraction.

Bead type	Quoted diameter	DTheory	DExp		Estimated diameter		Aggregate fraction
	(nm)	(µm2/sec)	(µm2/sec)		(nm)		(%)
			Water	PBS	Water	PBS	PBS
B450	100	4.39	4.45 ± 0.06	0.71 ± 0.05	98.7 ± 1.2	618.7 ± 40	99.9
B515	100	4.39	2.86 ± 0.03	0.92 ± 0.07	153.9 ± 1.4	477.5 ± 30	99.7
B561	100	4.39	3.44 ± 0.02	0.80 ± 0.06	127.7 ± 0.6	547.7 ± 40	94.4
B635	40	10.98	7.09 ± 0.06	1.00 ± 0.06	61.9 ± 0.5	439.3 ± 20	97.5