In Situ Quantitative Observation of Hygroscopic Growth of Single Nanoparticle Aerosol by Surface Plasmon Resonance Microscopy

Comparison of the predicted and measured hygroscopic growth factors of (a) NaCl, (b) NaNO3, (c) glucose, and (d) oxalic acid (OA) particles with a dry diameter of 90 nm. Hygroscopic growth and deliquescence of bicomponent nanoparticles (90 nm in size) with the NaCl-to-NaNO3 mass ratios of (a) 3:1, (b) 1:1, and (c) 1:3. Hygroscopic growth and deliquescence of NaCl + glucose bicomponent nanoparticles (90 nm in size) with the NaCl-to-glucose mass ratios of (a) 3:1, (b) 1:1, and (c) 1:3. Hygroscopic growth and deliquescence of NaCl + OA nanoparticles (90 nm in the size) with the NaCl-to-OA mass ratios of (a) 3:1, (b) 1:1, and (c) 1:3. Comparison of water contents in nanoparticles (90 nm in size)