Brightness calibrates particle size in single particle fluorescence imaging

Abstract. A major challenge for in situ observations in mixed-phase clouds remains the phase discrimination and sizing of cloud hydrometeors. In this work, we present a new method for determining the phase of individual cloud hydrometeors based on their angular-light-scattering behavior employed by the PHIPS (Particle Habit Imaging and Polar Scattering) airborne cloud probe. The phase discrimination algorithm is based on the difference of distinct features in the angular-scattering function of spherical and aspherical particles. The algorithm is calibrated and evaluated using a large data set gathered during two in situ aircraft campaigns in the Arctic and Southern Ocean. Comparison of the algorithm with manually classified particles showed that we can confidently discriminate between spherical and aspherical particles with a 98 % accuracy. Furthermore, we present a method for deriving particle size distributions based on single-particle angular-scattering data for particles in a size range from 100 µm ≤ D ≤ 700 µm and 20 µm ≤ D ≤ 700 µm for droplets and ice particles, respectively. The functionality of these methods is demonstrated in three representative case studies.

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Establishment of a Laminated Crushed Products Function and Numerical Analysis

Energies ◽

10.3390/en12050819 ◽

2019 ◽

Vol 12 (5) ◽

pp. 819 ◽

Cited By ~ 1

Author(s):

Guochen Duan ◽

Boqiang Shi ◽

Yanhua Shen ◽

Guoqing Yu

Keyword(s):

Particle Size ◽

Numerical Analysis ◽

Compression Ratio ◽

Single Particle ◽

Functional Relationship ◽

Distinct Element ◽

Confining Pressure ◽

Ratio Model ◽

Relative Compression ◽

Granular Particles

A model of the relative compression ratio for single-particle crushed products, based on the distinct element method (DEM) and numerical analysis, was established to describe precisely the crushed products of granular particles during laminated crushing. The relative compression ratio model was used to describe the functional relationship between the total compression ratio and the single-particle compression ratio, which can be described by lognormal distribution. The single-particle crushed products model was used to describe the functional relationship between the single-particle compression ratio and the distribution of single-particle crushed products. The distribution of single-particle crushed products was described by a three-parameter beta distribution. On the basis of the above model, the function of laminated crushed products of granular particles was established. According to the simulation results of EDEM under confining pressure, a functional relationship between total compression ratio, particle size, and height of the granular particles for laminated crushed products of granular particles was built. It was proved that the function of the theoretical particle size distribution coefficient of laminated crushed products of granular particles was not too different from the actual value determined by simulation. The function is universal and can be used to provide a theoretical basis and a design reference for the design of cone crushers, high-pressure roller mills, and other crushing equipment.

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Progress on the labeling and single-particle tracking technologies of viruses

The Analyst ◽

10.1039/c4an00038b ◽

2014 ◽

Vol 139 (13) ◽

pp. 3336-3346 ◽

Cited By ~ 20

Author(s):

Li-Li Huang ◽

Hai-Yan Xie

Keyword(s):

Fluorescence Imaging ◽

Particle Tracking ◽

Single Particle ◽

Single Particle Tracking ◽

Imaging Technologies ◽

Recent Advances

We review recent advances in virus labeling and the emerging fluorescence imaging technologies used in the imaging and tracking of viruses.

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A single, particle-size model for sulfur retention in fluidized bed coal combustors

AIChE Journal ◽

10.1002/aic.690270317 ◽

1981 ◽

Vol 27 (3) ◽

pp. 472-481 ◽

Cited By ~ 40

Author(s):

D. C. Lee ◽

Christos Georgakis

Keyword(s):

Particle Size ◽

Fluidized Bed ◽

Single Particle ◽

Size Model

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Pore selectivity and electron transfers in HZSM-5 single crystals: a Raman microspectroscopy mapping and confocal fluorescence imaging combined study

Physical Chemistry Chemical Physics ◽

10.1039/d0cp02018d ◽

2020 ◽

Vol 22 (22) ◽

pp. 12745-12756

Author(s):

A. Moissette ◽

M. Hureau ◽

M. Moreau ◽

J. P. Cornard

Keyword(s):

Single Crystals ◽

Fluorescence Imaging ◽

Single Particle ◽

Raman Microspectroscopy ◽

Single Particle Level ◽

Confocal Fluorescence ◽

Particle Level ◽

Confocal Fluorescence Imaging ◽

Electron Transfers

Electron transfers at the single particle level in HZSM-5 zeolite are followed by combining Raman microspectroscopy mapping and confocal fluorescence imaging. The effects of pore accessibility and guest diffusion on reactivity are investigated.

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Particle Size Dependence of Carrier Dynamics and Reactivity of Photocatalyst BiVO4 Probed with Single-Particle Transient Absorption Microscopy

The Journal of Physical Chemistry C ◽

10.1021/acs.jpcc.7b06230 ◽

2017 ◽

Vol 121 (40) ◽

pp. 22060-22066 ◽

Cited By ~ 13

Author(s):

Mitsunori Yabuta ◽

Atsuhiro Takeda ◽

Toshiki Sugimoto ◽

Kazuya Watanabe ◽

Akihiko Kudo ◽

...

Keyword(s):

Particle Size ◽

Single Particle ◽

Size Dependence ◽

Transient Absorption ◽

Carrier Dynamics

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Influence of Different Gradation Carbonyl Iron Particles on the Properties of Magneto-Rheological Fluids

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.452-453.623 ◽

2012 ◽

Vol 452-453 ◽

pp. 623-627

Author(s):

Cheng Bin Du ◽

Guo Jun Yu ◽

Zhi Wei Gong

Keyword(s):

Mechanical Properties ◽

Particle Size ◽

Shear Stress ◽

Single Particle ◽

Carbonyl Iron ◽

Iron Particle ◽

Iron Particles ◽

Carbonyl Iron Particle ◽

Magneto Rheological ◽

Multiple Particle

The influence of carbonyl iron particles sizes on the properties of magneto-rheological fluids (MRFs) were studied. Different-sized carbonyl iron magnetic particles were prepared by ball milling with different milling times. On this basis, different particle MRF were prepared The off-state viscosity and the shear stress of the above MRFs were characterised and studied by an advanced rotational rheometer system. The test results show that the off-state viscosity and the shear stress of single-particle MRFs were enhanced with increasing average carbonyl iron particle size at a constant magnetic field. The shear stresses of MRFs containing two or three different particle sizes were significantly improved compared with the MRFs containing only a single particle size. At a reasonable level of medium and small size carbonyl iron particle spread throughout the structure of the multiple-particle MRFs, the defects in the chain structure were remedied when a chain reaction occurred, and the mechanical properties of MRFs were enhanced. Meanwhile, increased mass fractions of the small size carbonyl iron particle resulted in a reduction in overall average particle size of MRFs, and the mechanical properties of MRFs were also reduced. The mechanical properties of multiple-particle MRFs were observed to be strongly dependent on the size and mass fraction of the medium and small carbonyl iron particles.

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