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   https://doi.org/10.1038/s41598-023-28823-6  

   Giri, Ramesh; Berg, Matthew J. (December 2023, Scientific Reports)

   Abstract Digital in-line holography (DIH) is an established method to image small particles in a manner where image reconstruction is performed computationally post-measurement. This ability renders it ideal for aerosol characterization, where particle collection or confinement is often difficult, if not impossible. Conventional DIH provides a gray-scale image akin to a particle’s silhouette, and while it gives the particle size and shape, there is little information about the particle material. Based on the recognition that the spectral reflectance of a surface is partly determined by the material, we demonstrate a method to image free-flowing particles with DIH in color with the eventual aim to differentiate materials based on the observed color. Holograms formed by the weak backscattered light from individual particles illuminated by red, green, and blue lasers are recorded by a color sensor. Images are reconstructed from the holograms and then layered to form a color image, the color content of which is quantified by chromaticity analysis to establish a representative signature. A variety of mineral dust aerosols are studied where the different signatures suggest the possibility to differentiate particle material. The ability of the method to resolve the inhomogeneous composition within a single particle in some cases is shown as well. 

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2. Aerosol Hygroscopicity and Surface-Active Coverage for the Droplet Growth of Aerosol Mixtures

   https://doi.org/10.1021/acsestair.4c00303  

   Ferdousi-Rokib, Nahin; A_Malek, Kotiba; Mitchell, Ian; M_Fierce, Laura; Asa-Awuku, Akua_A (July 2025, ACS ES&T Air)
3. The state of the aerosol: Musings on mixing state

   https://doi.org/10.1080/02786826.2024.2346220  

   Riemer, Nicole; West, Matthew (July 2024, Aerosol Science and Technology)
4. The Old and the New: Aging of Sea Spray Aerosol and Formation of Secondary Marine Aerosol through OH Oxidation Reactions

   https://doi.org/10.1021/acsearthspacechem.9b00087  

   Trueblood, Jonathan V.; Wang, Xiaofei; Or, Victor W.; Alves, Michael R.; Santander, Mitchell V.; Prather, Kimberly A.; Grassian, Vicki H. (August 2019, ACS Earth and Space Chemistry)
5. Observation of Organic Molecules at the Aerosol Surface

   https://doi.org/10.1021/acs.jpclett.6b00872  

   Wu, Yajing; Li, Wanyi; Xu, Bolei; Li, Xia; Wang, Han; McNeill, V. Faye; Rao, Yi; Dai, Hai-Lung (June 2016, The Journal of Physical Chemistry Letters)