The Airborne Microparticle
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The Airborne Microparticle
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Author : E. James Davis
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
The Airborne Microparticle written by E. James Davis and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
It has been thirty years since one of the authors (EJD) began a collaboration with Professor Milton Kerker at Clarkson University in Potsdam, New York using light scattering methods to study aerosol processes. The development of a relatively short-lived commercial particle levitator based on a modification of the Millikan oil drop experiment attracted their attention and led the author to the study of single droplets and solid microparticles by levitation methods. The early work on measurements of droplet evaporation rates using light scattering techniques to determine the size slowly expanded and diversified as better instrumentation was developed, and faster computers made it possible to perform Mie theory light scattering calculations with ease. Several milestones can be identified in the progress of single microparticle studies. The first is the introduction of the electrodynamic balance, which provided more robust trapping of a particle. The electrodynamic levitator, which has played an important role in atomic and molecular ion spectroscopy, leading to the Nobel Prize in Physics in 1989 shared by Wolfgang Paul of Bonn University and Hans Dehmelt of the University of Washington, was easily adapted to trap microparticles. Simultaneously, improvements in detectors for acquiring and storing light scattering data and theoretical and experimental studies of the interesting optical properties of microspheres, especially the work on morphology dependent resonances by Arthur Ashkin at the Bell Laboratories, Richard Chang, from Yale University, and Tony Campillo from the Naval Research Laboratories in Washington D. C.
The Airborne Microparticle
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Author :
language : en
Publisher:
Release Date : 2002
The Airborne Microparticle written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
The Airborne Microparticle
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Author :
language : en
Publisher:
Release Date : 2002
The Airborne Microparticle written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Anthropogenic Airborne Microparticles
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Author : John Phillip Bradley
language : en
Publisher:
Release Date : 1981
Anthropogenic Airborne Microparticles written by John Phillip Bradley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Aerosols categories.
Real Time Airborne Microparticle Characterization
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Author : Stephen Holler
language : en
Publisher:
Release Date : 1999
Real Time Airborne Microparticle Characterization written by Stephen Holler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Ethylene
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Author : William Malisoff
language : en
Publisher:
Release Date : 1919
Ethylene written by William Malisoff and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1919 with categories.
Optical Processes In Microparticles And Nanostructures
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Author : Ali Serpenguzel
language : en
Publisher: World Scientific
Release Date : 2011
Optical Processes In Microparticles And Nanostructures written by Ali Serpenguzel and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Science categories.
This Festschrift is a tribute to the eminent scholar, Professor Richard Kounai Chang, on his retirement from Yale University on June 12, 2008. During his over four decades of scientific exploration, Professor Chang has made a lasting contribution to the development of linear and nonlinear optics and devices in confined geometries, of surface second-harmonic generation and surface-enhanced Raman scattering, and of novel methods for detecting airborne aerosol pathogens. This volume assembles a collection of articles contributed by former students, collaborators, and colleagues of Professor Chang all over the world. The topics span a diverse scope in applied optics frontiers, many of which are rooted in Professor Chang's pioneering research.
Chemical Characterization Of Individual Microparticles Using An Ion Trap
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Author :
language : en
Publisher:
Release Date : 1996
Chemical Characterization Of Individual Microparticles Using An Ion Trap written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
This paper describes initial experiments to perform laser ablation mass spectrometry in real time on airborne microparticles. The microparticles are sampled directly from the air by a particle inlet system into the vacuum chamber of a mass spectrometer. An incoming particle is detected as it passes through two CW laser beams and a pulsed laser is triggered to intercept the particle for laser ablation/ionization in the mass spectrometer. The initial studies were made with an existing ion trap mass spectrometer with the particle sampling occurring at the center of the trap electrodes. Performance of the inlet system, particle detection, and preliminary results are described.
Techniques For Mass Determination Of Airborne Micro Particles In An Optical Dipole Force Trap
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Author : Gehrig Michael Isaac Carlse
language : en
Publisher:
Release Date : 2020
Techniques For Mass Determination Of Airborne Micro Particles In An Optical Dipole Force Trap written by Gehrig Michael Isaac Carlse and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
We present the development of a new technique for rapidly measuring the masses of airborne particles confined in free space optical dipole force traps. This technique employs an ultrafast CMOS sensor with a wide field of view to image the real time motion of trapped particles on timescales in which diffusive Brownian motion predicted by Einstein makes a transition to ballistic motion. The technique relies on direct imaging of drop-and-restore experiments without the need for a vacuum environment. In these drop-and-restore experiments, the trapping light is rapidly shuttered with an acousto-optic modulator causing the particle to be released from and subsequently recaptured by the trapping force. The trajectories from the falls and restorations are combined to infer the particle mass, which we also corroborate using an analysis of position autocorrelation functions of the trapped particles. Using the drop-and-restore technique, we report a statistical uncertainty of less than 2% for masses on the order of 510^(14) kg, using a data acquisition time of approximately 90 seconds. We also show that the measurement of a ballistic mean-squared displacement can be used for a preliminary estimate of the mass of a trapped micro-particle. Furthermore, we show that even the capacity to detect the timescale at which the transition to ballistic motion occurs, in combination with a measurement of particle size, can provide a similar mass estimate, consistent with the more rigorous mass determinations developed in this thesis. Ultimately, the methods presented here constitute simple, effective, and competitive alternatives for characterizing trapped particles and measuring their masses, in comparison with more elaborate standard techniques.
Aerosol Measurement
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Author : Pramod Kulkarni
language : en
Publisher: John Wiley & Sons
Release Date : 2011-09-09
Aerosol Measurement written by Pramod Kulkarni and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-09-09 with Science categories.
Aerosol Measurement: Principles, Techniques, and Applications Third Edition is the most detailed treatment available of the latest aerosol measurement methods. Drawing on the know-how of numerous expert contributors; it provides a solid grasp of measurement fundamentals and practices a wide variety of aerosol applications. This new edition is updated to address new and developing applications of aerosol measurement, including applications in environmental health, atmospheric science, climate change, air pollution, public health, nanotechnology, particle and powder technology, pharmaceutical research and development, clean room technology (integrated circuit manufacture), and nuclear waste management.