&lt;title&gt;Light-scattering properties for spherical and cylindrical particles: a simple approximation derived from Mie calculations&lt;/title&gt;

Bashkatova, Tatyana A.; Bashkatov, Alexey N.; Kochubey, Vyacheslav I.; Tuchin, Valery V.

doi:10.1117/12.431529

Cited by 9 publications

(6 citation statements)

References 5 publications

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“…To quantitatively inspect the relationship, we plot μ s versus Gallyas OD in selective ROIs, which covered all the laminar layers as well as the white matter for the five brain regions. The scatter plots indicate a strong linear relationship between scattering coefficient and Gallyas OD, which is consistent with the mie theory, assuming the same myelin architecture in the tissues 30 , therefore, we fit the data with a linear model and presented the results in Figures 2.a-e.…”

Section: Resultssupporting

confidence: 83%

Scalable mapping of myelin and neuron density in the human brain with micrometer resolution

Wang

Chang

Varadarajan

et al. 2021

Preprint

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Optical Coherence Tomography (OCT) is an emerging 3D imaging technique that allows quantification of intrinsic optical properties such as scattering coefficient and back-scattering coefficient, and has proved useful in distinguishing delicate microstructures in the human brain. The origins of scattering in brain tissues are contributed by the myelin content, neuron size and density primarily; however, no quantitative relationships between them have been reported, which hampers the use of OCT in fundamental studies of architectonic areas in the human brain and the pathological evaluations of diseases. To date, histology remains the golden standard, which is prone to errors and can only work on a small number of subjects. Here, we demonstrate a novel method that uses serial sectioning OCT to quantitatively measure myelin content and neuron density in the human brain. We found that the scattering coefficient possesses a strong linear relationship with the myelin content across different regions of the human brain, while the neuron density serves as a secondary contribution that only slightly modulates the overall tissue scattering.

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Section: Resultssupporting

confidence: 83%

Scalable mapping of myelin and neuron density in the human brain with micrometer resolution

Wang

Chang

Varadarajan

et al. 2021

Preprint

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“…Mie light theory has been accurately simulated using Monte Carlo methods in previous studies. , In this study, the particle size was less than 500 nm for most cases and thus the size parameter x (defined as 2π r /λ m ) was less than 7.85. Within this size range (0 < x < 7.85, 0 < r p < 500 nm), an eighth order polynomial function was used to fit the scattering efficiency factor of Mie theory simulated by Monte Carlo methods: where the parameters p j are listed in Table .…”

Section: Modelingmentioning

confidence: 96%

Two-Stage Model Reveals Barite Crystallization Kinetics from Solution Turbidity

Dai

Zhang

Kan

et al. 2019

Ind. Eng. Chem. Res.

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The mechanistic modeling of mineral crystallization is essential for the understanding and control of many natural and industrial processes. In the past century, many mechanisms and models have been proposed to explain observations in different crystallization stages. However, most models only focus on a certain step or mechanism (e.g., nucleation, aggregation) and lack a comprehensive view. Incorporating nucleation, aggregation, and surface reaction together, this study developed an analytical two-stage crystallization model to simulate the particle size and number concentration versus time and correlate them with the measured solution turbidity. Through measuring solution turbidity in real time, this model can reproduce the crystallization process by predicting the key parameters: nucleation rate, particle size, number concentration, surface tension, induction time, and particle linear growth rate. Most of these values for barite crystallization match with literature data and our direct cryo-transmission electron microscopy (cryo-TEM) measurements. Moreover, the established relationships of these key parameters versus temperature and supersaturation enable this model to predict barite crystallization kinetics based only on the initial supersaturation and temperature. This study is a potential starting point to more quantitatively and comprehensively analyze and control mineral crystallization, important to various science and engineering applications.

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“…This behavior is as expected as the size parameter x of drops are larger at 300 GHz frequency. We checked the functionality of the Mie code against online Mie calculator [14] and by replicating results in paper [15].…”

Section: Resultsmentioning

confidence: 99%

Rain Induced Co-Channel Interference at 60 GHz and 300 GHz Frequencies

Juttula

Kokkoniemi

Lehtomäki

et al. 2019

2019 IEEE International Conference on Communications Workshops (ICC Workshops)

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Results at mm wave frequencies have shown that it is important to evaluate co-channel interference between directional beams that cross each other. Terahertz frequency bands, especially around 300 GHz, has been considered for future wireless communications. As far as we know, no work has considered the rain induced interference at THz frequencies. In this work, we evaluate the rain induced interference at 300 GHz. Results are calculated also at 60 GHz in order to make a comparison. We combined bistatic radar equation, first order multiple scattering approximation and full Mie scattering calculations to existing drop size distribution models to estimate interference due to rain. Considered effective path lengths between transmitter and receiver are 100 m and 500 m and the effect of selected drop size distribution is studied. Overall interference levels was observed to be approximately 20 dBm smaller at 300 GHz than at 60 GHz and angular dependency of interfering power was much more forward oriented for 300 GHz frequency. The results show that rain induces interference has significantly different behaviour at THz as compared to lower frequencies.

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<title>Light-scattering properties for spherical and cylindrical particles: a simple approximation derived from Mie calculations</title>

Cited by 9 publications

References 5 publications

Scalable mapping of myelin and neuron density in the human brain with micrometer resolution

Scalable mapping of myelin and neuron density in the human brain with micrometer resolution

Two-Stage Model Reveals Barite Crystallization Kinetics from Solution Turbidity

Rain Induced Co-Channel Interference at 60 GHz and 300 GHz Frequencies

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