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Articles 1 - 4 of 4
Full-Text Articles in Physics
Diffusion Of Rubidium Vapor Through Hollow-Core Fibers For Gas-Phase Fiber Lasers, Eric M. Guild
Diffusion Of Rubidium Vapor Through Hollow-Core Fibers For Gas-Phase Fiber Lasers, Eric M. Guild
Theses and Dissertations
This work examines the diffusion of rubidium through a small diameter tube alone and in the presence of noble gases. A fluid dynamics analysis is investigated to aid in choosing a method for transferring atomic rubidium vapor that is reliable and efficient. Solutions to the time dependant ordinary differential equation describing the experimental flow properties of the system reveal more precise outcomes than previously practiced routines. Resolved viscosities and Poiseuille flow theory velocity profile distributions are characterized for noble gas carriers of the rubidium vapor. Applying Reynolds Numbers to the flow experiments provides pressure differential boundaries that are employed in …
Co2 Diffusion Through Gelatin Experiment, Jennifer Welborn
Co2 Diffusion Through Gelatin Experiment, Jennifer Welborn
STEM Digital
An example of measuring lengths.
Dynamics Of Nanoparticles In Complex Fluids., Rami Ahmad Saleh Omari
Dynamics Of Nanoparticles In Complex Fluids., Rami Ahmad Saleh Omari
Wayne State University Dissertations
Soft matter is a subfield of condensed matter including polymers, colloidal dispersions, surfactants, and liquid crystals. These materials are familiar from our everyday life- glues, paints, soaps, and plastics are examples of soft materials. Many phenomena in these systems have the same underlying physical mechanics. Moreover, it has been recognized that combinations of these systems, like for example polymers and colloids, exhibit new properties which are found in each system separately. These mixed systems have a higher degree of complexity than the separate systems. In order to understand their behavior, knowledge from each subfields of soft matter has to be …
Transient Diffraction Grating Measurements Of Molecular Diffusion In The Undergraduate Laboratory, Daniel Spiegel, Santona Tuli
Transient Diffraction Grating Measurements Of Molecular Diffusion In The Undergraduate Laboratory, Daniel Spiegel, Santona Tuli
Physics and Astronomy Faculty Research
Mass diffusion is a central process in many biological, chemical, and physical systems, and although the mathematics of diffusion has long been an important component of an undergraduate physics education, experimental measurements of diffusion are not very common in the undergraduate laboratory. We describe here an experiment that employs the interference of laser beams to allow measurement of molecular diffusion on micron length scales. The interference fringes of two intersecting “pump” beams within a dye solution create a sinusoidal distribution of long-lived molecular excited states. A third “probe” beam is incident at a wavelength at which the indices of refraction …