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Molecules
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Recent Advancements in the Research of Aerosol Science & Technology
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Recent Advancements in the Research of Aerosol Science & Technology

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Physical Chemistry".

Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 6389

Special Issue Editors

Dr. Yongle Pan

E-Mail Website
Guest Editor
CCDC-US Army Research Laboratory, Adelphi, MD 20783, USA
Interests: nano-, micron-sized particle; atmospheric, biologic, and chemical aerosols; microcavities; laser spectroscopies; atmospheric processes of aerosol particles; technologies for aerosol study
Prof. Dr. Chuji Wang

E-Mail Website
Guest Editor
Department of Physics and Astronomy, Mississippi State University, Starkville, MS 39759, USA
Interests: single particle studies; optical trapping; laser spectroscopy; low-temperature plasma; atmospheric and environmental mercury; breath biomarkers
Prof. Dr. Matthew Berg

E-Mail Website
Guest Editor
Department of Physics, Kansas State University, 1228 North 17th Street, Manhattan, KS 66506-2601, USA
Interests: electromagnetic scattering; light scattering; optics; digital holography; technologies for aerosol study

Special Issue Information

Dear Colleagues,

Aerosols are the suspension of solid or liquid particles in a gas, usually in air. We live with aerosols at all times and everywhere—they are ubiquitous. Their diversity is vast, and in the atmosphere, particles include smoke, dust, viruses, marine salt, fungus, bacteria, pollen, etc. The size of these particles ranges from a few tens of nanometers to a few hundred micrometers. Aerosols play an essential role in human health and climate, such as the spread and outbreak of a pandemic disease, precipitation-related hydrologic cycles, and global warming. Such examples underscore their importance and motivate the large record of research that has been undertaken. Such studies range from a fundamental understanding of aerosol characteristics from both theoretical and experimental points of view to applied aerosol science and technology, which includes the instrumentation and measurement campaigns used to examine and monitor atmospheric aerosol in the field.

This Special Issue aims to cover the important recent advances in aerosol science and technology. Submissions are welcome but not limited to the topics listed below. The types of contributions sought may be full research articles, short communications, and reviews focusing on new developments in aerosol science and technology. However, unless new methodologies or new findings are involved, contributions that focus on data collection, e.g., environmental measurements from specific geographical areas, are not sought in this issue.

(1) Aerosol preparation, generation, transportation, detection, and characterization;

(2) Maintaining aerosol particles’ suspension in particular environmental conditions in which particles can freely interact with the surrounding air, such as in the atmosphere;

(3) Techniques for detecting and characterizing the physical, chemical, and biological properties of aerosol particles;

(4) Aerosol particle–particle, particle–liquid, and particle–air interactions;

(5) Drug delivery and medical applications of aerosols;

(6) Hazard detection and characterization, e.g., bioaerosol, chemical aerosol, biomass burning;

(7) Innovative instruments and experimental techniques in aerosol studies;

(8) Smart data analysis methods and theoretical models, e.g., machine learning and AI technologies.

Dr. Yongle Pan
Prof. Dr. Chuji Wang
Prof. Dr. Matthew Berg
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • physical, chemical, and biological properties
  • detection and characterization
  • bioaerosols
  • aerosol and health
  • atmospheric interactions
  • instrumentation and experimental skills
  • spectroscopies in aerosols
  • molecular compositions
  • single aerosol particles

Published Papers (3 papers)

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Research

14 pages, 4922 KiB  
Article
Classification of Aggregates Using Multispectral Two-Dimensional Angular Light Scattering Simulations
by Jaeda M. Mendoza, Kenzie Chen, Sequoyah Walters, Emily Shipley, Kevin B. Aptowicz and Stephen Holler
Molecules 2022, 27(19), 6695; https://doi.org/10.3390/molecules27196695 - 08 Oct 2022
Cited by 1 | Viewed by 1367
Abstract
Airborne particulate matter plays an important role in climate change and health impacts, and is generally irregularly shaped and/or forms agglomerates. These particles may be characterized through their light scattering signals. Two-dimensional angular scattering from such particles produce a speckle pattern that is [...] Read more.
Airborne particulate matter plays an important role in climate change and health impacts, and is generally irregularly shaped and/or forms agglomerates. These particles may be characterized through their light scattering signals. Two-dimensional angular scattering from such particles produce a speckle pattern that is influenced by their morphology (shape and material composition). In what follows, we revisit morphological descriptors obtained from computationally generated light scattering patterns from aggregates of spherical particles. These descriptors are used as inputs to a multivariate statistical algorithm and then classified via supervised machine learning algorithms. The classification results show improved accuracy over previous efforts and demonstrate the utility of the proposed morphological descriptors. Full article
(This article belongs to the Special Issue Recent Advancements in the Research of Aerosol Science & Technology)
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18 pages, 4701 KiB  
Article
A Highly Efficient Biomass Compound Aerosol Suppressant in Purifying Radioactive Cesium Droplet Aerosols
by Lang Wu, Shuchang Lei, Yixia Wang, Shiyu Yang, Xiaoyan Lin and Haijun Wang
Molecules 2022, 27(19), 6480; https://doi.org/10.3390/molecules27196480 - 01 Oct 2022
Cited by 2 | Viewed by 1489
Abstract
Nuclear accidents and decommissioning in the nuclear industry would release a large number of radioactive aerosols which endangers the natural environment and the health of workers. Therefore, there is an urgent need for environment-friendly aerosol suppressants to control and handle environmental pollution problems [...] Read more.
Nuclear accidents and decommissioning in the nuclear industry would release a large number of radioactive aerosols which endangers the natural environment and the health of workers. Therefore, there is an urgent need for environment-friendly aerosol suppressants to control and handle environmental pollution problems caused by radioactive aerosols. In this paper, sodium alginate (SA), a type of polyphenol material (TP), and alkyl glycosides (APGs) were selected as the components of the compound aerosol suppressant and the optimal proportion was generated via the method of D-optimal mixture design. Furthermore, the cesium aerosol sedimentation effect of the optimized compound aerosol suppressants was evaluated via sedimentation efficiency, the change in particle concentration cumulative concentration fraction of the cesium aerosol sedimentation process. The results showed that the aerosol sedimentation efficiency was 99.82% which was much higher than nature settlement, 18.6% and water spraying sedimentation, 43.3%. Moreover, after spraying the compound suppressant, it displayed a good effect on settling the cesium aerosol particles with a diameter of less than 1 µm, as the concentration of particles was reduced from 55.49% to 44.53%. Finally, the sedimentation mechanism of the compound aerosol suppressant and cesium aerosol particles, such as the coagulation effect, was analyzed using the particle size distribution. Full article
(This article belongs to the Special Issue Recent Advancements in the Research of Aerosol Science & Technology)
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23 pages, 2961 KiB  
Article
A Collection of Molecular Fingerprints of Single Aerosol Particles in Air for Potential Identification and Detection Using Optical Trapping-Raman Spectroscopy
by Haifa Alali, Yukai Ai, Yong-Le Pan, Gorden Videen and Chuji Wang
Molecules 2022, 27(18), 5966; https://doi.org/10.3390/molecules27185966 - 14 Sep 2022
Cited by 6 | Viewed by 2074
Abstract
Characterization, identification, and detection of aerosol particles in their native atmospheric states remain a challenge. Recently, optical trapping-Raman spectroscopy (OT-RS) has been developed and demonstrated for characterization of single, airborne particles. Such particles in different chemical groups have been characterized by OT-RS in [...] Read more.
Characterization, identification, and detection of aerosol particles in their native atmospheric states remain a challenge. Recently, optical trapping-Raman spectroscopy (OT-RS) has been developed and demonstrated for characterization of single, airborne particles. Such particles in different chemical groups have been characterized by OT-RS in recent years and many more are being studied. In this work, we collected single-particle Raman spectra measured using the OT-RS technique and began construction of a library of OT-RS fingerprints that may be used as a reference for potential detection and identification of aerosol particles in the atmosphere. We collected OT-RS fingerprints of aerosol particles from eight different categories including carbons, bioaerosols (pollens, fungi, vitamins, spores), dusts, biological warfare agent surrogates, etc. Among the eight categories, spectral fingerprints of six groups of aerosol particles have been published previously and two other groups are new. We also discussed challenges, limitations, and advantages of using single-particle optical trapping-Raman spectroscopy for aerosol-particle characterization, identification, and detection. Full article
(This article belongs to the Special Issue Recent Advancements in the Research of Aerosol Science & Technology)
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