Log in

Relevant bibliographies by topics / Particle measurements / Journal articles

To see the other types of publications on this topic, follow the link: Particle measurements.

Journal articles on the topic 'Particle measurements'

Author: Grafiati

Published: 4 June 2021

Last updated: 20 June 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Particle measurements.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Liu, Yiliang, Arttu Yli-Kujala, Fabian Schmidt-Ott, et al. "Direct calibration using atmospheric particles and performance evaluation of Particle Size Magnifier (PSM) 2.0 for sub-10 nm particle measurements." Atmospheric Measurement Techniques 18, no. 2 (2025): 431–42. https://doi.org/10.5194/amt-18-431-2025.

Full text

Abstract:

Abstract. The Particle Size Magnifier is widely used for measuring nano-sized particles. Here we calibrated the newly developed Particle Size Magnifier version 2.0 (PSM 2.0). We used 1–10 nm particles with different compositions, including metal particles, organic particles generated in the laboratory, and atmospheric particles collected in Helsinki and Hyytiälä. A noticeable difference among the calibration curves was observed. Atmospheric particles from Hyytiälä required higher diethylene glycol (DEG) supersaturation to be activated compared to metal particles (standard calibration particles

APA, Harvard, Vancouver, ISO, and other styles

2

Wu, Jin, Robert Miller, Douglas Cooper, James Flynn, Douglas Delson, and Robert Teagle. "Deposition of Submicron Aerosol Particles During Integrated Circuit Manufacturing: Experiments." Journal of the IEST 32, no. 1 (1989): 27–45. http://dx.doi.org/10.17764/jiet.1.32.1.m52036842044n049.

Full text

Abstract:

Measurements of airborne concentrations and surface concentrations of submicron particles were made in two different semiconductor manufacturing cleanrooms. These measurements, made with an optical particle counter, a condensation nucleus counter, and a surface contamination optical monitor were used to determine the particle fluxes and the particle deposition velocities. The measurement data were compared with theoretical predictions of deposition due to gravity, diffusion, and electrostatic effects.

APA, Harvard, Vancouver, ISO, and other styles

3

Tee, Yi Hui, James R. Dawson, and R. Jason Hearst. "Volumetric Measurements Of Particle-Wake Interactions." Proceedings of the International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics 21 (July 8, 2024): 1–12. http://dx.doi.org/10.55037/lxlaser.21st.80.

Full text

Abstract:

Research on freely falling particles has primarily focused on wake dynamics and vortex shedding of individual particles in quiescent flow. When these particles fall collectively, the wakes of surrounding particles alter the flow fields. Hence, we conducted volumetric experiments to investigate how the settling and wake dynamics of particles are affected by the wakes of other settling particles. Negatively buoyant 12 mm particles of (sphere, flat cuboid, circular and square cylinders) are first released individually into quiescent water. Then, the particles are released individually into the bu

APA, Harvard, Vancouver, ISO, and other styles

4

Trieu, Hang, Per Bergström, Mikael Sjödahl, J. Gunnar I. Hellström, Patrik Andreasson, and Henrik Lycksam. "Photogrammetry for Free Surface Flow Velocity Measurement: From Laboratory to Field Measurements." Water 13, no. 12 (2021): 1675. http://dx.doi.org/10.3390/w13121675.

Full text

Abstract:

This study describes a multi-camera photogrammetric approach to measure the 3D velocity of free surface flow. The properties of the camera system and particle tracking velocimetry (PTV) algorithm were first investigated in a measurement of a laboratory open channel flow to prepare for field measurements. The in situ camera calibration methods corresponding to the two measurement situations were applied to mitigate the instability of the camera mechanism and camera geometry. There are two photogrammetry-based PTV algorithms presented in this study regarding different types of surface particles

APA, Harvard, Vancouver, ISO, and other styles

5

Tallon, S., C. E. Davies, and M. Kirkegaard. "An acoustic method for in-line particle size measurement in flowing bulk solids." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 217, no. 1 (2003): 33–40. http://dx.doi.org/10.1243/09544080360562963.

Full text

Abstract:

The propagation velocity of acoustic waves through a packed bed of particles depends on, among other things, the wave frequency and the size of the particles. In this paper, theory is developed to describe the propagation velocity based on consideration of viscous interactions between the gas and solid phases. Experimental measurements in the frequency range 50–10 000Hz, and for particles ranging in mean size from 65 to 6000μm, agree well with the theory, particularly at low frequencies. The propagation velocity also correlates strongly with measurements of the surface mean particle diameter,

APA, Harvard, Vancouver, ISO, and other styles

6

Ruuskanen, T. M., M. Kaasik, P. P. Aalto, et al. "Concentrations and fluxes of aerosol particles during the LAPBIAT measurement campaign at Värriö field station." Atmospheric Chemistry and Physics 7, no. 14 (2007): 3683–700. http://dx.doi.org/10.5194/acp-7-3683-2007.

Full text

Abstract:

Abstract. The LAPBIAT measurement campaign took place in the Värriö SMEAR I measurement station located in Eastern Lapland in the spring of 2003 between 26 April and 11 May. In this paper we describe the measurement campaign, concentrations and fluxes of aerosol particles, air ions and trace gases, paying special attention to an aerosol particle formation event broken by a air mass change from a clean Arctic air mass with new particle formation to polluted one approaching from industrial areas of Kola Peninsula, Russia, lacking new particle formation. Aerosol particle number flux measurements

APA, Harvard, Vancouver, ISO, and other styles

7

Zhang, Jiaoshi, Steven Spielman, Yang Wang, et al. "Rapid measurement of RH-dependent aerosol hygroscopic growth using a humidity-controlled fast integrated mobility spectrometer (HFIMS)." Atmospheric Measurement Techniques 14, no. 8 (2021): 5625–35. http://dx.doi.org/10.5194/amt-14-5625-2021.

Full text

Abstract:

Abstract. The ability of aerosol particles to uptake water (hygroscopic growth) is an important determinant of aerosol optical properties and radiative effects. Aerosol hygroscopic growth is traditionally measured by humidified tandem differential mobility analyzers (HTDMA), in which size-selected dry particles are exposed to elevated relative humidity (RH), and the size distribution of humidified particles is subsequently measured using a scanning mobility particle sizer. As a scanning mobility particle sizer can measure only one particle size at a time, HTDMA measurements are time consuming,

APA, Harvard, Vancouver, ISO, and other styles

8

HUANG, PETER, JEFFREY S. GUASTO, and KENNETH S. BREUER. "The effects of hindered mobility and depletion of particles in near-wall shear flows and the implications for nanovelocimetry." Journal of Fluid Mechanics 637 (September 17, 2009): 241–65. http://dx.doi.org/10.1017/s0022112009990656.

Full text

Abstract:

The behaviour of spherical Brownian particles in a near-wall shear flow is explored using Langevin simulations and experimental measurements, focusing on the effects of anisotropic hindered particle mobility and the formation of a particle depletion layer due to repulsive forces. The results are discussed in the context of particle velocity distributions obtained by near-wall image-based velocimetry. It is observed that the shear force and dispersion dominate at high Péclet number (Pe > 3), and the asymmetric shapes of particle velocity distributions are attributed to broken symmetry due to

APA, Harvard, Vancouver, ISO, and other styles

9

Sulo, Juha, Joonas Enroth, Aki Pajunoja, et al. "Pushing nano-aerosol measurements towards a new decade – technical note on the Airmodus particle size magnifier 2.0." Aerosol Research 2, no. 1 (2024): 13–20. http://dx.doi.org/10.5194/ar-2-13-2024.

Full text

Abstract:

Abstract. Accurate measurement of the size distribution of sub-10 nm aerosol particles is still a challenge. Here we introduce a novel version of the Airmodus particle size magnifier (PSM 2.0), which is a condensation-particle-counter-based instrument with a sizing range of 1–12 nm. The extended size range compared to the earlier PSM version enables the direct detection of forming clusters and particles as well as the study of their growth processes without the challenges related to particle charging. It also gives an overlap between the activation size distribution measurements with the PSM a

APA, Harvard, Vancouver, ISO, and other styles

10

Bagdun, A. A., and V. L. Solomakho. "Methods and Technical Means for Ensuring Uniformity of Nanoparticle Size Measurements." Science & Technique 21, no. 6 (2022): 473–79. http://dx.doi.org/10.21122/2227-1031-2022-21-6-473-479.

Full text

Abstract:

The paper proposes a set of technical tools for solving the problem of ensuring the uniformity of measurements of micro- and nanoparticles. To do this, it is necessary to ensure the traceabilityof particle size measurements to a unit of length – a meter, as well as equivalent diameters used in measurements in various dispersed media (aerosols and suspensions). To ensure traceability of particle diameter measurements to the meter, it is proposed to use a nanomeasuring machine with an atomic force microscope as a probing system. The paper presents a diagram of the measuring system, describes the

APA, Harvard, Vancouver, ISO, and other styles

11

Ruuskanen, T. M., M. Kaasik, P. P. Aalto, et al. "Concentrations and fluxes of aerosol particles during the LAPBIAT measurement campaign in Värriö field station." Atmospheric Chemistry and Physics Discussions 7, no. 1 (2007): 709–51. http://dx.doi.org/10.5194/acpd-7-709-2007.

Full text

Abstract:

Abstract. The LAPBIAT measurement campaign took place in the SMEAR I measurement station located in Eastern Lapland in the spring of 2003 between 26 April and 11 May. In this paper we describe the measurement campaign, concentrations and fluxes of aerosol particles, air ions and trace gases, paying special attention to an aerosol particle formation event broken by a polluted air mass approaching from industrial areas of Kola Peninsula, Russia. Aerosol particle number flux measurements show strong downward fluxes during that time. Concentrations of coarse aerosol particles were high for 1–2 day

APA, Harvard, Vancouver, ISO, and other styles

12

Orea, D., R. Chavez, D. T. Nguyen, et al. "PARTICLE DEPOSITION STUDY IN A HORIZONTAL SQUARE CHANNEL USING HIGH-RESOLUTION IMAGING." EPJ Web of Conferences 247 (2021): 10011. http://dx.doi.org/10.1051/epjconf/202124710011.

Full text

Abstract:

The ongoing research at Texas A&M University (TAMU) aims to develop and implement measurement techniques to quantify fission product transport and related phenomena in a Gas-Cooled Fast Reactor (GCFR). This study summarizes the experimental measurements performed in a Proof-of-Concept Facility (PCF) to understand particle transport under various Reynolds numbers. Using high-resolution high-magnification optical measurement techniques, surrogate particle deposition was measured on the bottom wall surface of the PCF. The particle deposition over time was observed to decrease as the Reynolds

APA, Harvard, Vancouver, ISO, and other styles

13

Liu, S., L. M. Russell, D. T. Sueper, and T. B. Onasch. "Organic particle types by single-particle measurements using a time-of-flight aerosol mass spectrometer coupled with a light scattering module." Atmospheric Measurement Techniques 6, no. 2 (2013): 187–97. http://dx.doi.org/10.5194/amt-6-187-2013.

Full text

Abstract:

Abstract. Chemical and physical properties of individual ambient aerosol particles can vary greatly, so measuring the chemical composition at the single-particle level is essential for understanding atmospheric sources and transformations. Here we describe 46 days of single-particle measurements of atmospheric particles using a time-of-flight aerosol mass spectrometer coupled with a light scattering module (LS-ToF-AMS). The light scattering module optically detects particles larger than 180 nm vacuum aerodynamic diameter (130 nm geometric diameter) before they arrive at the chemical mass spect

APA, Harvard, Vancouver, ISO, and other styles

14

Li, Yixu, Wenjun Yang, Haili Lin, et al. "Research on Suspended Particle Size Measurement Based on Ultrasonic Backscattered Amplitude Analysis." Water 16, no. 14 (2024): 1973. http://dx.doi.org/10.3390/w16141973.

Full text

Abstract:

Measuring the size of suspended particles in water is crucial in related fields such as environmental engineering, marine engineering, and hydraulic engineering. Considering the size distribution of suspended particles in real rivers, the amplitude (Amp) of the backscattering of particles with sizes ranging from 0.006 mm to 0.030 mm was analysed in this research using a lightweight ultrasonic meter developed by the authors and four probes with bandwidths ranging from 3.0 MHz to 30.0 MHz. In the analysis of Amp measurements for different particle sizes, using 0.008 mm as the reference particle

APA, Harvard, Vancouver, ISO, and other styles

15

Zobov, Konstantin, Vyacheslav Syzrantsev, and Sergey Bardakhanov. "Features Of Particle Size Measurements In The Nanosilica Hydrosol By The Optical Methods." Siberian Journal of Physics 11, no. 4 (2016): 68–77. http://dx.doi.org/10.54362/1818-7919-2016-11-4-68-77.

Full text

Abstract:

The current level of study and application of nanoparticles raises the question of their classification. One of the main parameters in this case is the particle size. However, its measurement on such a small scale is a valuable problem as usual models are not correct. The article presents the results of measurements of the light attenuation in the hydrosols (dispersions of nanoparticles in water). The Rayleigh scattering theory was applied to the experimental data for obtaining the average size of nanoparticles with various specific surfaces. The obtained values were compared with the results

APA, Harvard, Vancouver, ISO, and other styles

16

Takeyama, Mao, Kota Fujiwara, and Yasuo Hattori. "Improvement in the Number of Velocity Vector Acquisitions Using an In-Picture Tracking Method for 3D3C Rainbow Particle Tracking Velocimetry." Fluids 9, no. 10 (2024): 226. http://dx.doi.org/10.3390/fluids9100226.

Full text

Abstract:

Particle image velocimetry and particle tracking velocimetry (PTV) have developed from two-dimensional two-component (2D2C) velocity vector measurements to 3D3C measurements. Rainbow particle tracking velocimetry is a low-cost 3D3C measurement technique adopting a single color camera. However, the vector acquisition rate is not so high. To increase the number of acquired vectors, this paper proposes a high probability and long-term tracking method. First, particles are tracked in a raw picture instead of in three-dimensional space. The tracking is aided by the color information. Second, a part

APA, Harvard, Vancouver, ISO, and other styles

17

Chan, T. W., J. R. Brook, G. J. Smallwood, and G. Lu. "Time-resolved measurements of black carbon light absorption enhancement in urban and near-urban locations of Southern Ontario, Canada." Atmospheric Chemistry and Physics Discussions 10, no. 8 (2010): 19939–80. http://dx.doi.org/10.5194/acpd-10-19939-2010.

Full text

Abstract:

Abstract. In this study a photoacoustic spectrometer (PA), a laser-induced incandescence instrument system (LII) and an aerosol mass spectrometer were operated in parallel for in situ measurements of black carbon (BC) light absorption enhancement. Results of a thermodenuder experiment using ambient particles in Toronto are presented first to show that LII measurements of BC are not influenced by particle coating while the PA response is enhanced and also that the nature of this enhancement is influenced by particle morphology. Comparisons of ambient PA and LII measurements at four different lo

APA, Harvard, Vancouver, ISO, and other styles

18

Stockwell, Chelsea E., Agnieszka Kupc, Bartłomiej Witkowski, et al. "Characterization of a catalyst-based conversion technique to measure total particulate nitrogen and organic carbon and comparison to a particle mass measurement instrument." Atmospheric Measurement Techniques 11, no. 5 (2018): 2749–68. http://dx.doi.org/10.5194/amt-11-2749-2018.

Full text

Abstract:

Abstract. The chemical composition of aerosol particles is a key aspect in determining their impact on the environment. For example, nitrogen-containing particles impact atmospheric chemistry, air quality, and ecological N deposition. Instruments that measure total reactive nitrogen (Nr = all nitrogen compounds except for N2 and N2O) focus on gas-phase nitrogen and very few studies directly discuss the instrument capacity to measure the mass of Nr-containing particles. Here, we investigate the mass quantification of particle-bound nitrogen using a custom Nr system that involves total conversio

APA, Harvard, Vancouver, ISO, and other styles

19

Yu, Baoguo, Hongjuan Zhang, Wenzhuo Li, Chuang Qian, Bijun Li, and Chaozhong Wu. "Ego-Lane Index Estimation Based on Lane-Level Map and LiDAR Road Boundary Detection." Sensors 21, no. 21 (2021): 7118. http://dx.doi.org/10.3390/s21217118.

Full text

Abstract:

Correct ego-lane index estimation is essential for lane change and decision making for intelligent vehicles, especially in global navigation satellite system (GNSS)-challenged environments. To achieve this, we propose an ego-lane index estimation approach in an urban scenario based on particle filter (PF). The particles are initialized and propagated by dead reckoning with inertial measurement unit (IMU) and odometry. A lane-level map is used to navigate the particles taking advantage of topologic and geometric information of lanes. GNSS single-point positioning (SPP) can provide position esti

APA, Harvard, Vancouver, ISO, and other styles

20

Hiraoka, Yuki, Yoshiharu Murase, Hideki Katayama, et al. "Multimodal Analysis of Corrosion for AA6016 Alloy at the Boundaries between Aluminum Matrix/Intermetallic Particles." ECS Meeting Abstracts MA2024-02, no. 67 (2024): 4568. https://doi.org/10.1149/ma2024-02674568mtgabs.

Full text

Abstract:

Aluminum alloys are attracting attention as lightweight materials for automobiles, and the fact that intermetallic particles indispensable for improving strength of the alloys can be harmful to the corrosion resistance has become an issue. However, the initial corrosion behavior at the interface of intermetallic particles for aluminum alloys has been hardly examined using a comprehensive analysis method. In this study, a nano-micro scale multimodal analysis of Energy Dispersive X-ray Analysis (EDS), Electron Backscatter Diffraction (EBSD), and Kelvin Force Microscopy (KFM) was performed to cla

APA, Harvard, Vancouver, ISO, and other styles

21

Clemen, Hans-Christian, Johannes Schneider, Thomas Klimach, et al. "Optimizing the detection, ablation, and ion extraction efficiency of a single-particle laser ablation mass spectrometer for application in environments with low aerosol particle concentrations." Atmospheric Measurement Techniques 13, no. 11 (2020): 5923–53. http://dx.doi.org/10.5194/amt-13-5923-2020.

Full text

Abstract:

Abstract. The aim of this study is to show how a newly developed aerodynamic lens system (ALS), a delayed ion extraction (DIE), and better electric shielding improve the efficiency of the Aircraft-based Laser ABlation Aerosol MAss spectrometer (ALABAMA). These improvements are applicable to single-particle laser ablation mass spectrometers in general. To characterize the modifications, extensive size-resolved measurements with spherical polystyrene latex particles (PSL; 150–6000 nm) and cubic sodium chloride particles (NaCl; 400–1700 nm) were performed. Measurements at a fixed ALS position sho

APA, Harvard, Vancouver, ISO, and other styles

22

Xu, Mindi, and Hwa-Chi Wang. "Minimum Sampling Time/Volume for Liquid-Borne Particle Counters and Monitors." Journal of the IEST 40, no. 6 (1997): 29–34. http://dx.doi.org/10.17764/jiet.2.40.6.uh6153l0661882v5.

Full text

Abstract:

A particle counter is an instrument that measures particles in all the fluid passing through its sensor, and a particle monitor measures particles only in a portion of the fluid. For liquid with an ultralow particle concentration, particles may not disperse uniformly in the liquid. Therefore, the concentrations may vary significantly from measurement to measurement if the sample volume is not large enough. To achieve the same precision, a minimum sampling time or minimum sample volume for a particle instrument needs to be specified. A Poisson distribution was used to describe the distribution

APA, Harvard, Vancouver, ISO, and other styles

23

KAWASAKI, Yousuke, Haruzou MIYASITA, and Tosio KIKUCHI. "Particles. Particle Measurements in Vacuum by In Situ Particle Monitor Sensor." SHINKU 41, no. 9 (1998): 771–75. http://dx.doi.org/10.3131/jvsj.41.771.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Healy, R. M., N. Riemer, J. C. Wenger, et al. "Single particle diversity and mixing state measurements." Atmospheric Chemistry and Physics Discussions 14, no. 3 (2014): 3973–4005. http://dx.doi.org/10.5194/acpd-14-3973-2014.

Full text

Abstract:

Abstract. A newly developed framework for quantifying aerosol particle diversity and mixing state based on information-theoretic entropy is applied for the first time to single particle mass spectrometry field data. Single particle mass fraction estimates for black carbon, organic aerosol, ammonium, nitrate and sulphate, derived using single particle mass spectrometer, aerosol mass spectrometer and multi-angle absorption photometer measurements are used to calculate single particle species diversity (Di). The average single particle species diversity (Dα) is then related to the species diversi

APA, Harvard, Vancouver, ISO, and other styles

25

Liu, S., L. M. Russell, D. T. Sueper, and T. B. Onasch. "Organic particle types by single-particle measurements using a time-of-flight aerosol mass spectrometer coupled with a light scattering module." Atmospheric Measurement Techniques Discussions 5, no. 2 (2012): 3047–77. http://dx.doi.org/10.5194/amtd-5-3047-2012.

Full text

Abstract:

Abstract. Chemical and physical properties of individual ambient aerosol particles can vary greatly, so measuring the chemical composition at the single-particle level is essential for understanding atmospheric sources and transformations. Here we describe 46 days of single-particle measurements of atmospheric particles using a time-of-flight aerosol mass spectrometer coupled with a light scattering module (LS-ToF-AMS). The light scattering module optically detects particles larger than 180 nm vacuum aerodynamic diameter (130 nm geometric diameter) (with size resolution of 5–10 defined as dΔd

APA, Harvard, Vancouver, ISO, and other styles

26

Su, H., D. Rose, Y. F. Cheng, et al. "Hygroscopicity distribution concept for measurement data analysis and modeling of aerosol particle mixing state with regard to hygroscopic growth and CCN activation." Atmospheric Chemistry and Physics 10, no. 15 (2010): 7489–503. http://dx.doi.org/10.5194/acp-10-7489-2010.

Full text

Abstract:

Abstract. This paper presents a general concept and mathematical framework of particle hygroscopicity distribution for the analysis and modeling of aerosol hygroscopic growth and cloud condensation nucleus (CCN) activity. The cumulative distribution function of particle hygroscopicity, H(κ, Dd) is defined as the number fraction of particles with a given dry diameter, Dd, and with an effective hygroscopicity parameter smaller than the parameter κ. From hygroscopicity tandem differential mobility analyzer (HTDMA) and size-resolved CCN measurement data, H(κ, Dd) can be derived by solving the κ-Kö

APA, Harvard, Vancouver, ISO, and other styles

27

Mendes, Luís, Konstantinos Eleftheriadis, and George Biskos. "Performance comparison of two thermodenuders in Volatility Tandem DMA measurements." Journal of Aerosol Science 92, no. 2016 (2015): 38–52. https://doi.org/10.1016/j.jaerosci.2015.10.002.

Full text

Abstract:

Volatility Tandem Differential Mobility Analysers (VTDMAs) are widely used for determining the volatile and refractory fractions and thus the mixing state of aerosols particles. A three-channel VTDMA consisting of two thermodenuders (TDs) with distinct designs (i.e., the NanoTD, having a straight tube design, and a coiled TD; cTD) and a by-pass line was built and fully characterized. Both TDs were tested using laboratory-generated aerosol particles (single compound and core–shell particles) as well as atmospheric aerosols observed at an urban background station. The NanoTD exhibited high

APA, Harvard, Vancouver, ISO, and other styles

28

Kezoudi, Maria, Matthias Tesche, Helen Smith, et al. "Measurement report: Balloon-borne in situ profiling of Saharan dust over Cyprus with the UCASS optical particle counter." Atmospheric Chemistry and Physics 21, no. 9 (2021): 6781–97. http://dx.doi.org/10.5194/acp-21-6781-2021.

Full text

Abstract:

Abstract. This paper presents measurements of mineral dust concentration in the diameter range from 0.4 to 14.0 µm with a novel balloon-borne optical particle counter, the Universal Cloud and Aerosol Sounding System (UCASS). The balloon launches were coordinated with ground-based active and passive remote-sensing observations and airborne in situ measurements with a research aircraft during a Saharan dust outbreak over Cyprus from 20 to 23 April 2017. The aerosol optical depth at 500 nm reached values up to 0.5 during that event over Cyprus, and particle number concentrations were as high as 5

APA, Harvard, Vancouver, ISO, and other styles

29

Ahmadzadegan, Adib, Harsa Mitra, Pavlos P. Vlachos, and Arezoo M. Ardekani. "Particle Image micro-Rheology (PIR) using displacement probability density function." Journal of Rheology 67, no. 4 (2023): 823. http://dx.doi.org/10.1122/8.0000629.

Full text

Abstract:

We present a novel approach to perform passive microrheology. A method to measure the rheological properties of fluids from the Brownian motion of suspended particles. Rheological properties are found from the particles' mean square displacements (MSDs) as a function of measurement time lag. Current state-of-the-art approaches find the MSD by tracking multiple particles' trajectories. However, particle tracking approaches face many limitations, including low accuracy and high computational cost, and they are only applicable to low particle seeding densities. Here, we present a novel method, te

APA, Harvard, Vancouver, ISO, and other styles

30

Ma, Peng-Cheng, Gui-Bin Chen, Xiao-Wei Li, and You-Bang Zhan. "Efficient scheme for remote preparation of an arbitrary tripartite four-particle entangled state." International Journal of Modern Physics B 32, no. 03 (2018): 1850023. http://dx.doi.org/10.1142/s0217979218500236.

Full text

Abstract:

We propose a novel scheme to realize remote preparation of an arbitrary tripartite four-particle entangled state via two three-particle GHZ states as the quantum channel. In this scheme, the sender should employ several novel two-particle projective measurements on her particles. According to the sender’s measurement outcome, the receiver will carry out local unitary operations and suitable C-NOT gates on his particles to recover the desired state. It is shown that, in our scheme, the total successful probability of the RSP can reach 1.

APA, Harvard, Vancouver, ISO, and other styles

31

Castellini, Alessia, Rosario Franco, and Giuseppe Compagno. "Effects of Indistinguishability in a System of Three Identical Qubits." Proceedings 12, no. 1 (2019): 23. http://dx.doi.org/10.3390/proceedings2019012023.

Full text

Abstract:

Quantum correlations of identical particles are important for quantum-enhanced technologies. The recently introduced non-standard approach to treat identical particles is here exploited to show the effect of particle indistinguishability on the characterization of entanglement of three identical qubits. We show that, by spatially localized measurements in separated regions, three independently-prepared separated qubits in a pure elementary state behave as distinguishable ones, as expected. On the other hand, delocalized measurements make it emerge a measurement-induced entanglement. We then fi

APA, Harvard, Vancouver, ISO, and other styles

32

Healy, R. M., N. Riemer, J. C. Wenger, et al. "Single particle diversity and mixing state measurements." Atmospheric Chemistry and Physics 14, no. 12 (2014): 6289–99. http://dx.doi.org/10.5194/acp-14-6289-2014.

Full text

Abstract:

Abstract. A newly developed framework for quantifying aerosol particle diversity and mixing state based on information-theoretic entropy is applied for the first time to single particle mass spectrometry field data. Single particle mass fraction estimates for black carbon, organic aerosol, ammonium, nitrate and sulfate, derived using single particle mass spectrometer, aerosol mass spectrometer and multi-angle absorption photometer measurements are used to calculate single particle species diversity (Di). The average single particle species diversity (Dα) is then related to the species diversit

APA, Harvard, Vancouver, ISO, and other styles

33

Straaten, Agnes, and Stephan Weber. "Measurement report: Three years of size-resolved eddy-covariance particle number flux measurements in an urban environment." Atmospheric Chemistry and Physics 21, no. 24 (2021): 18707–26. http://dx.doi.org/10.5194/acp-21-18707-2021.

Full text

Abstract:

Abstract. Size-resolved particle number fluxes in the size range of 10 nm < particle diameter (Dp) < 200 nm were measured over a 3-year period (April 2017–March 2020) using the eddy-covariance technique at an urban site in Berlin, Germany. The observations indicated the site as a net source of particles with a median total particle number flux of FTNC=0.86 × 108 m−2 s−1. The turbulent surface–atmosphere exchange of particles was clearly dominated by ultrafine particles (Dp < 100 nm) with a share of 96 % of total particle number flux (FUFP=0.83 × 108 m−2 s−1). Annual estimates of media

APA, Harvard, Vancouver, ISO, and other styles

34

McMillin, Brian K., Pratim Biswas, and Michael R. Zachariah. "In situ characterization of vapor phase growth of iron oxide-silica nanocomposites: Part I. 2-D planar laser-induced fluorescence and Mie imaging." Journal of Materials Research 11, no. 6 (1996): 1552–61. http://dx.doi.org/10.1557/jmr.1996.0194.

Full text

Abstract:

Planar laser-based imaging measurements of fluorescence and particle scattering have been obtained during flame synthesis of iron-oxide/silica superparamagnetic nanocomposites. The theory and application of laser-induced fluorescence, the spectroscopy of FeO(g), and the experimental approach for measurement of gas phase precursors to particle formation are discussed. The results show that the vapor phase FeO concentration rapidly rises at the primary reaction front of the flame and is very sensitive to the amount of precursor added, suggesting nucleation-controlled particle growth. The FeO vap

APA, Harvard, Vancouver, ISO, and other styles

35

Ferguson, J. R., and D. E. Stock. "“Heavy” Particle Dispersion Measurements With Mono- and Polydisperse Particle Size Distributions." Journal of Fluids Engineering 115, no. 3 (1993): 523–26. http://dx.doi.org/10.1115/1.2910170.

Full text

Abstract:

A method is presented to estimate the effects of a polydisperse particle size distribution on the measured turbulent dispersion of particles. In addition, the analysis provides a means to estimate the standard deviation of the size distribution for which a class of particles may be considered monodisperse. If monodisperse particles are unavailable because of practical considerations (e.g., the required standard deviation of particle size is too small to obtain a sufficient quantity) then the method provides a means to correct the data of near monodisperse size distributions to reflect the disp

APA, Harvard, Vancouver, ISO, and other styles

36

Teinilä, Kimmo, Sanna Saarikoski, Henna Lintusaari, et al. "Measurement report: Wintertime aerosol characterization at an urban traffic site in Helsinki, Finland." Atmospheric Chemistry and Physics 25, no. 9 (2025): 4907–28. https://doi.org/10.5194/acp-25-4907-2025.

Full text

Abstract:

Abstract. Physical and chemical properties of particulate matter and concentrations of trace gases were measured at an urban site in Helsinki, Finland, for 5 weeks to investigate the effect of wintertime conditions on pollutants. The measurement took place in a street canyon (traffic supersite) in January–February 2022. In addition, measurements were conducted in an urban background station (UB supersite, SMEAR III, located approx. 0.9 km from the traffic supersite). Measurements were also made using the mobile laboratory. The measurements were made driving the adjacent side streets and the st

APA, Harvard, Vancouver, ISO, and other styles

37

Kontush, S. M., S. A. Tshekatolina, A. Y. Gugva, and T. V. Burlaka. "Laser particle counters for environmental aerosol measurements." Physics of Aerodisperse Systems, no. 51 (March 19, 2014): 109–14. http://dx.doi.org/10.18524/0367-1631.2014.51.160105.

Full text

Abstract:

Operation mechanism of developed laser particle counter, allowing to determine aerosol particles mass distribution, is described. Comparison is made with results, obtained via standard setup for deposition of particles on filter.

APA, Harvard, Vancouver, ISO, and other styles

38

Manninen, H. E., T. Nieminen, E. Asmi, et al. "EUCAARI ion spectrometer measurements at 12 European sites – analysis of new-particle formation events." Atmospheric Chemistry and Physics Discussions 10, no. 4 (2010): 11251–313. http://dx.doi.org/10.5194/acpd-10-11251-2010.

Full text

Abstract:

Abstract. We present comprehensive results on continuous atmospheric cluster and particle measurements in the size range ~1–42 nm within the European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) project. We focused on characterizing the spatial and temporal variation of new-particle formation events and relevant particle formation parameters across Europe. Different types of air ion and cluster mobility spectrometers were deployed at 12 field sites across Europe from March 2008 to May 2009. The measurements were conducted in a wide variety of environments,

APA, Harvard, Vancouver, ISO, and other styles

39

Manninen, H. E., T. Nieminen, E. Asmi, et al. "EUCAARI ion spectrometer measurements at 12 European sites – analysis of new particle formation events." Atmospheric Chemistry and Physics 10, no. 16 (2010): 7907–27. http://dx.doi.org/10.5194/acp-10-7907-2010.

Full text

Abstract:

Abstract. We present comprehensive results on continuous atmospheric cluster and particle measurements in the size range ~1–42 nm within the European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) project. We focused on characterizing the spatial and temporal variation of new particle formation events and relevant particle formation parameters across Europe. Different types of air ion and cluster mobility spectrometers were deployed at 12 field sites across Europe from March 2008 to May 2009. The measurements were conducted in a wide variety of environments,

APA, Harvard, Vancouver, ISO, and other styles

40

Kupper, Martin, Ludwig Schubert, Manfred Nachtnebel, et al. "Measurement and Analysis of Brake and Tyre Particle Emissions from Automotive Series Components for High-Load Driving Tests on a Wheel and Suspension Test Bed." Atmosphere 15, no. 4 (2024): 430. http://dx.doi.org/10.3390/atmos15040430.

Full text

Abstract:

A current challenge in realising clean road transport is non-exhaust emissions. Important advances regarding measurement systems, including well-defined characterisation techniques, as well as regulation, will be made in the next few years. In this work, we present the detailed results of particle emission analyses, consisting of aerosol (size distribution, particle number (PN), and mass (PM)) and electron microscopy (EM) measurements, under different load conditions on a test bed for a wheel suspension and brakes. Standard tyres and brakes from serial production were tested with a high-load d

APA, Harvard, Vancouver, ISO, and other styles

41

Flinn, John E. "Particle size measurements." Materials Science and Engineering: A 161, no. 2 (1993): 309. http://dx.doi.org/10.1016/0921-5093(93)90526-k.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Pasch, Saskia, Heinrich Lionel Lange, Robin Leister, and Jochen Kriegseis. "Flow Measurements Above A DBD Plasma Actuator Array By Means Of Defocusing PTV." Proceedings of the International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics 21 (July 8, 2024): 1–19. http://dx.doi.org/10.55037/lxlaser.21st.47.

Full text

Abstract:

Lagrangian defocusing particle tracking velocimetry (DPTV) measurements are conducted in a thin, wall-parallel volume above a plasma actuator array that is applied to mimic the effect of wall oscillations by inducing alternating, wall-parallel forcing in opposite directions into the air above the actuator surface. The aim of the experiments is to capture the plasma-induced flow structures in otherwise quiescent air in order to increase the understanding of different actuation parameters. For this purpose, high-speed particle image velocimetry equipment with one camera is used in a DPTV setup,

APA, Harvard, Vancouver, ISO, and other styles

43

Mahler, Dylan H., Lee Rozema, Kent Fisher, et al. "Experimental nonlocal and surreal Bohmian trajectories." Science Advances 2, no. 2 (2016): e1501466. http://dx.doi.org/10.1126/sciadv.1501466.

Full text

Abstract:

Weak measurement allows one to empirically determine a set of average trajectories for an ensemble of quantum particles. However, when two particles are entangled, the trajectories of the first particle can depend nonlocally on the position of the second particle. Moreover, the theory describing these trajectories, called Bohmian mechanics, predicts trajectories that were at first deemed “surreal” when the second particle is used to probe the position of the first particle. We entangle two photons and determine a set of Bohmian trajectories for one of them using weak measurements and postselec

APA, Harvard, Vancouver, ISO, and other styles

44

Huang, Zhang, Qi, and Liu. "Concentration Measurement of Uniform Particles Based on Backscatter Sensing of Optical Fibers." Water 11, no. 9 (2019): 1955. http://dx.doi.org/10.3390/w11091955.

Full text

Abstract:

A set of miniature optical fiber particle concentration measuring instruments is designed and applied to develop a unified expression for the concentration measurement of uniform particles in tap water. By measuring the concentrations of six uniform silicon carbide particles in the size range of 38–250 μm, the unified relationship between particle size, particle concentration, and optical scattering intensity is proposed. The unified expression is verified by the concentration measurements of silicon carbide particles with three other sizes. The results show that the measurement error is less

APA, Harvard, Vancouver, ISO, and other styles

45

Perim de Faria, Julia, Ulrich Bundke, Andrew Freedman, Timothy B. Onasch, and Andreas Petzold. "Laboratory validation of a compact single-scattering albedo (SSA) monitor." Atmospheric Measurement Techniques 14, no. 2 (2021): 1635–53. http://dx.doi.org/10.5194/amt-14-1635-2021.

Full text

Abstract:

Abstract. An evaluation of the performance and relative accuracy of a Cavity Attenuated Phase-Shift Single Scattering Albedo Monitor (CAPS PMSSA; Aerodyne Research, Inc.) was conducted in an optical-closure study with proven technologies: Cavity Attenuated Phase-Shift Particle Extinction Monitor (CAPS PMex; Aerodyne Research, Inc.), three-wavelength integrating nephelometer (TSI Model 3563) and three-wavelength filter-based Particle Soot Absorption Photometer (PSAP; Radiance Research Inc.). The evaluation was conducted by connecting the instruments to a controlled aerosol generation system and

APA, Harvard, Vancouver, ISO, and other styles

46

Wurie, Fatima, Olivier Le Polain de Waroux, Matthew Brande, et al. "Characteristics of exhaled particle production in healthy volunteers: possible implications for infectious disease transmission." F1000Research 2 (January 15, 2013): 14. http://dx.doi.org/10.12688/f1000research.2-14.v1.

Full text

Abstract:

The size and concentration of exhaled particles may influence respiratory infection transmission risk. We assessed variation in exhaled particle production between individuals, factors associated with high production and stability over time.We measured exhaled particle production during tidal breathing in a sample of 79 healthy volunteers, using optical particle counter technology. Repeat measurements (several months after baseline) were obtained for 37 of the 79 participants. Multilevel linear regression models of log transformed particle production measures were used to assess risk factors f

APA, Harvard, Vancouver, ISO, and other styles

47

Cheng, Darren, Stavros Amanatidis, Gregory S. Lewis, and Coty N. Jen. "Fast and sensitive measurements of sub-3 nm particles using Condensation Particle Counters For Atmospheric Rapid Measurements (CPC FARM)." Atmospheric Measurement Techniques 18, no. 1 (2025): 197–210. https://doi.org/10.5194/amt-18-197-2025.

Full text

Abstract:

Abstract. New particle formation (NPF) is the atmospheric process whereby gas molecules react and nucleate to form detectable particles. NPF has a strong impact on Earth's radiative balance as it produces roughly half of global cloud condensation nuclei. However, the time resolution and sensitivity of current instrumentation are inadequate in measuring the size distribution of sub-3 nm particles, the particles critical for understanding NPF. Here we present the Condensation Particle Counters For Atmospheric Rapid Measurements (CPC FARM), a method to measure the concentrations of freshly nuclea

APA, Harvard, Vancouver, ISO, and other styles

48

Irwin, M., N. Good, J. Crosier, T. W. Choularton, and G. McFiggans. "Reconciliation of measurements of hygroscopic growth and critical supersaturation of aerosol particles in central Germany." Atmospheric Chemistry and Physics 10, no. 23 (2010): 11737–52. http://dx.doi.org/10.5194/acp-10-11737-2010.

Full text

Abstract:

Abstract. Aerosol physical, chemical and hygroscopic properties were measured in a range of airmasses during COPS (Convective and Orographically-induced Precipitation Study) ground-based in June and July of 2007 at the Hornisgrinde mountain site in the Black Forest, Southwest Germany. Non-refractory aerosol composition was measured with an Aerosol Mass Spectrometer, simultaneous to hygroscopic growth factors at 86% relative humidity and CCN activity measurements for particles of dry (<20%) diameters 27 to 217 nm, with particle water uptake exhibiting substantial variability with time and wi

APA, Harvard, Vancouver, ISO, and other styles

49

Köllner, Franziska, Johannes Schneider, Megan D. Willis, et al. "Particulate trimethylamine in the summertime Canadian high Arctic lower troposphere." Atmospheric Chemistry and Physics 17, no. 22 (2017): 13747–66. http://dx.doi.org/10.5194/acp-17-13747-2017.

Full text

Abstract:

Abstract. Size-resolved and vertical profile measurements of single particle chemical composition (sampling altitude range 50–3000 m) were conducted in July 2014 in the Canadian high Arctic during an aircraft-based measurement campaign (NETCARE 2014). We deployed the single particle laser ablation aerosol mass spectrometer ALABAMA (vacuum aerodynamic diameter range approximately 200–1000 nm) to identify different particle types and their mixing states. On the basis of the single particle analysis, we found that a significant fraction (23 %) of all analyzed particles (in total: 7412) contained

APA, Harvard, Vancouver, ISO, and other styles

50

Healy, R. M., S. Hellebust, I. Kourtchev, et al. "Source apportionment of PM<sub>2.5</sub> in Cork Harbour, Ireland using a combination of single particle mass spectrometry and quantitative semi-continuous measurements." Atmospheric Chemistry and Physics 10, no. 19 (2010): 9593–613. http://dx.doi.org/10.5194/acp-10-9593-2010.

Full text

Abstract:

Abstract. An aerosol time-of-flight mass spectrometer (ATOFMS) was deployed for the measurement of the size resolved chemical composition of single particles at a site in Cork Harbour, Ireland for three weeks in August 2008. The ATOFMS was co-located with a suite of semi-continuous instrumentation for the measurement of particle number, elemental carbon (EC), organic carbon (OC), sulfate and particulate matter smaller than 2.5 μm in diameter (PM2.5). The temporality of the ambient ATOFMS particle classes was subsequently used in conjunction with the semi-continuous measurements to apportion PM

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!