1
|
Rafferty A, Vennes B, Bain A, Preston TC. Optical trapping and light scattering in atmospheric aerosol science. Phys Chem Chem Phys 2023; 25:7066-7089. [PMID: 36852581 DOI: 10.1039/d2cp05301b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Aerosol particles are ubiquitous in the atmosphere, and currently contribute a large uncertainty to climate models. Part of the endeavour to reduce this uncertainty takes the form of improving our understanding of aerosol at the microphysical level, thus enabling chemical and physical processes to be more accurately represented in larger scale models. In addition to modeling efforts, there is a need to develop new instruments and methodologies to interrogate the physicochemical properties of aerosol. This perspective presents the development, theory, and application of optical trapping, a powerful tool for single particle investigations of aerosol. After providing an overview of the role of aerosol in Earth's atmosphere and the microphysics of these particles, we present a brief history of optical trapping and a more detailed look at its application to aerosol particles. We also compare optical trapping to other single particle techniques. Understanding the interaction of light with single particles is essential for interpreting experimental measurements. In the final part of this perspective, we provide the relevant formalism for understanding both elastic and inelastic light scattering for single particles. The developments discussed here go beyond Mie theory and include both how particle and beam shape affect spectra. Throughout the entirety of this work, we highlight numerous references and examples, mostly from the last decade, of the application of optical trapping to systems that are relevant to the atmospheric aerosol.
Collapse
Affiliation(s)
| | - Benjamin Vennes
- Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Quebec, Canada.
| | - Alison Bain
- School of Chemistry, University of Bristol, Bristol, UK
| | - Thomas C Preston
- Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Quebec, Canada. .,Department of Chemistry, McGill University, Montreal, Quebec, Canada
| |
Collapse
|
2
|
Logozzo A, Preston TC. Temperature-Controlled Dual-Beam Optical Trap for Single Particle Studies of Organic Aerosol. J Phys Chem A 2021; 126:109-118. [PMID: 34964637 DOI: 10.1021/acs.jpca.1c09363] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An optical trapping cell that is capable of suspending particles using two counter-propagating beams in a temperature-controlled environment is reported here. With this dual-beam optical trap, we are able to hold single micron-sized droplets at temperatures down to 253 K (-20 °C) for hours at a time and in metastable (supercooled) states. As particles are trapped at the shared focal points of two intense beams, strong cavity-enhanced Raman scattering (CERS) is observed and allows for high precision measurements of physical properties. Here, the evaporation of highly oxygenated organic systems was monitored using CERS and was used to determine temperature-dependent vapor pressures and enthalpies of vaporization. The wavelength- and temperature-dependent optical properties were also simultaneously retrieved using CERS.
Collapse
Affiliation(s)
- Alexander Logozzo
- Department of Atmospheric and Oceanic Sciences and Department of Chemistry, McGill University, 805 Sherbrooke Street West, Montreal, Quebec, Canada H3A 0B9
| | - Thomas C Preston
- Department of Atmospheric and Oceanic Sciences and Department of Chemistry, McGill University, 805 Sherbrooke Street West, Montreal, Quebec, Canada H3A 0B9
| |
Collapse
|
3
|
Advancing the science of dynamic airborne nanosized particles using Nano-DIHM. Commun Chem 2021; 4:170. [PMID: 36697661 PMCID: PMC9814397 DOI: 10.1038/s42004-021-00609-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 11/23/2021] [Indexed: 01/28/2023] Open
Abstract
In situ and real-time characterization of aerosols is vital to several fundamental and applied research domains including atmospheric chemistry, air quality monitoring, or climate change studies. To date, digital holographic microscopy is commonly used to characterize dynamic nanosized particles, but optical traps are required. In this study, a novel integrated digital in-line holographic microscope coupled with a flow tube (Nano-DIHM) is demonstrated to characterize particle phase, shape, morphology, 4D dynamic trajectories, and 3D dimensions of airborne particles ranging from the nanoscale to the microscale. We demonstrate the application of Nano-DIHM for nanosized particles (≤200 nm) in dynamic systems without optical traps. The Nano-DIHM allows observation of moving particles in 3D space and simultaneous measurement of each particle's three dimensions. As a proof of concept, we report the real-time observation of 100 nm and 200 nm particles, i.e. polystyrene latex spheres and the mixture of metal oxide nanoparticles, in air and aqueous/solid/heterogeneous phases in stationary and dynamic modes. Our observations are validated by high-resolution scanning/transmission electron microscopy and aerosol sizers. The complete automation of software (Octopus/Stingray) with Nano-DIHM permits the reconstruction of thousands of holograms within an hour with 62.5 millisecond time resolution for each hologram, allowing to explore the complex physical and chemical processes of aerosols.
Collapse
|
4
|
Schneider V, Kersten H. An optical trapping system for particle probes in plasma diagnostics. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2018; 89:103505. [PMID: 30399761 DOI: 10.1063/1.5051065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 09/19/2018] [Indexed: 06/08/2023]
Abstract
We present one of the first experiments for optically trapping of single microparticles as probes for low temperature plasma diagnostics. Based on the dual laser beam, counter-propagating technique, SiO2 microparticles are optically trapped at very large distances in low-temperature, low-pressure rf plasma. External forces on the particle are measured by means of the displacement of the probe particle in the trap. Measurements can be performed during plasma operation as well as without plasma. The paper focuses on the optical setup and the verification of the system and its principle. Three examples for the particle behavior in the trapping system are presented: First, we measured the neutral gas damping as a verification of the technique. Second, an experiment without a plasma studies the changing particle charge by UV light radiation, and third, by moving the probe particle in the vertical direction into the sheath or into the plasma bulk, respectively, the acting forces on the probe particle are measured.
Collapse
Affiliation(s)
- Viktor Schneider
- Institute of Experimental and Applied Physics, Christian-Albrechts-University Kiel, D-24098 Kiel, Germany
| | - Holger Kersten
- Institute of Experimental and Applied Physics, Christian-Albrechts-University Kiel, D-24098 Kiel, Germany
| |
Collapse
|
5
|
|
6
|
Esat K, David G, Poulkas T, Shein M, Signorell R. Phase transition dynamics of single optically trapped aqueous potassium carbonate particles. Phys Chem Chem Phys 2018; 20:11598-11607. [DOI: 10.1039/c8cp00599k] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This study reveals that complex multiple processes occur during efflorescence and deliquescence in unsupported, submicron sized particles.
Collapse
Affiliation(s)
- Kıvanç Esat
- Laboratory of Physical Chemistry
- ETH Zürich
- Zürich
- Switzerland
| | - Grégory David
- Laboratory of Physical Chemistry
- ETH Zürich
- Zürich
- Switzerland
| | | | - Mikhail Shein
- Laboratory of Physical Chemistry
- ETH Zürich
- Zürich
- Switzerland
| | - Ruth Signorell
- Laboratory of Physical Chemistry
- ETH Zürich
- Zürich
- Switzerland
| |
Collapse
|
7
|
Cremer JW, Covert PA, Parmentier EA, Signorell R. Direct Measurement of Photoacoustic Signal Sensitivity to Aerosol Particle Size. J Phys Chem Lett 2017; 8:3398-3403. [PMID: 28682623 DOI: 10.1021/acs.jpclett.7b01288] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Continuing efforts to quantify the influence of aerosol light absorption upon global heat budgets rely on high-quality measurements of aerosol optical properties. Of the available methods, photoacoustic spectroscopy stands out as a sensitive method for measurements of aerosol absorption with minimal sample modification. Theoretical treatments of photoacoustic aerosol detection have predicted size-dependent damping of the photoacoustic signal as a result of particle thermal inertia. We provide experimental confirmation of this prediction using a single-particle photoacoustic spectrometer, which allows us to measure photoacoustic signals with high sensitivity and size-specificity. Both the magnitude and phase of the photoacoustic response follow the linearized description of the heat flux. The quantification of this effect provides a basis for future, system-specific case studies.
Collapse
Affiliation(s)
- Johannes W Cremer
- Department of Chemistry and Applied Biosciences, Laboratory of Physical Chemistry, ETH Zürich , Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Paul A Covert
- Department of Chemistry and Applied Biosciences, Laboratory of Physical Chemistry, ETH Zürich , Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Evelyne A Parmentier
- Department of Chemistry and Applied Biosciences, Laboratory of Physical Chemistry, ETH Zürich , Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Ruth Signorell
- Department of Chemistry and Applied Biosciences, Laboratory of Physical Chemistry, ETH Zürich , Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| |
Collapse
|
8
|
Ault AP, Axson JL. Atmospheric Aerosol Chemistry: Spectroscopic and Microscopic Advances. Anal Chem 2016; 89:430-452. [DOI: 10.1021/acs.analchem.6b04670] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Andrew P. Ault
- Department
of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department
of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jessica L. Axson
- Department
of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan 48109, United States
| |
Collapse
|
9
|
Davis RD, Lance S, Gordon JA, Tolbert MA. Long Working-Distance Optical Trap for in Situ Analysis of Contact-Induced Phase Transformations. Anal Chem 2015; 87:6186-94. [DOI: 10.1021/acs.analchem.5b00809] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ryan D. Davis
- Cooperative
Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, Colorado 80309, United States
- Department
of Chemistry and Biochemistry, University of Colorado, UCB 216, Boulder, Colorado 80309, United States
| | - Sara Lance
- Cooperative
Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, Colorado 80309, United States
| | - Joshua A. Gordon
- National Institute of Standards and Technology (NIST), Communications Technology
Lab, Boulder, Colorado 80305, United States
| | - Margaret A. Tolbert
- Cooperative
Institute for Research in Environmental Sciences (CIRES), University of Colorado, Boulder, Colorado 80309, United States
- Department
of Chemistry and Biochemistry, University of Colorado, UCB 216, Boulder, Colorado 80309, United States
| |
Collapse
|
10
|
David G, Esat K, Hartweg S, Cremer J, Chasovskikh E, Signorell R. Stability of aerosol droplets in Bessel beam optical traps under constant and pulsed external forces. J Chem Phys 2015; 142:154506. [DOI: 10.1063/1.4917202] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Grégory David
- Laboratory of Physical Chemistry, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Kıvanç Esat
- Laboratory of Physical Chemistry, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Sebastian Hartweg
- Laboratory of Physical Chemistry, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Johannes Cremer
- Laboratory of Physical Chemistry, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Egor Chasovskikh
- Laboratory of Physical Chemistry, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Ruth Signorell
- Laboratory of Physical Chemistry, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| |
Collapse
|
11
|
Cotterell MI, Mason BJ, Preston TC, Orr-Ewing AJ, Reid JP. Optical extinction efficiency measurements on fine and accumulation mode aerosol using single particle cavity ring-down spectroscopy. Phys Chem Chem Phys 2015; 17:15843-56. [DOI: 10.1039/c5cp00252d] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We report a new single aerosol particle approach using cavity ringdown spectroscopy to accurately determine optical extinction cross sections at multiple wavelengths.
Collapse
Affiliation(s)
| | | | - Thomas C. Preston
- Department of Atmospheric and Oceanic Sciences and Department of Chemistry
- McGill University
- Montreal
- Canada
| | | | | |
Collapse
|