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Thursday, August 6, 2020 | History

2 edition of study of films of barium stearate built on glass. found in the catalog.

study of films of barium stearate built on glass.

James Drummond Hamilton

study of films of barium stearate built on glass.

by James Drummond Hamilton

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  • 11 Currently reading

Published .
Written in English

    Subjects:
  • Physics Theses

  • Edition Notes

    Thesis (M.A.), Dept. of Physics, University of Toronto

    The Physical Object
    Pagination25 p.
    Number of Pages25
    ID Numbers
    Open LibraryOL15964727M

      Dielectric Constant Acetone (° F) Acetone (32° F) Acetonitrile (70° F) Acetophenone (75° F) Acetoxime (24° F) 3. This study reports on the effect of artists’ paint formulation on degradation rates of TiO2-based oil paints. Titanium white oil paint exists in a multitude of different recipes, and the effect of the formulation on photocatalytic binder degradation kinetics is unknown. These formulations contain, among others, one or both titanium dioxide polymorphs, zinc oxide, the extenders barium sulfate.

    The acknowledgments of the Editor appear elsewhere in this book. The Effect of Ultraviolet Light on Acid Barium Stearate Multilayers, The Surface Force Exerted by Indicator Oils, 98 Experiments with Non-Glare Surfaces on Glass, 99 The Study of Light Scattering from Thin Films, Ed Hennelly: A Fun Person, Yu A. Bobrov and L. D. Saginov, Infrared Fourier spectroscopic study of the micro-heterogeneity of mixed Langmuir barium stearate-stearic acid multilayers, Zh. .

      Etched pattern of gold film on the glass substrate. “Films Built by Depositing Successive Monomolecular Layers on a Solid Surface” Chem. Soc., 57 () K. B. Blodgett and I. Langmuir, “Built-Up Films of Barium Stearate and .   The recorded history of organic monolayer and multilayer thin films spans approximately years. Fatty-acid-based monolayers were deposited on water by the ancients for applications ranging from fortune telling in King Hammurabi's time (∼ BC, Mesopotamia) to stilling choppy waters for sailors and divers as reported by the Roman philosopher Pliny the Elder in ∼78 AD, and then much.


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Study of films of barium stearate built on glass by James Drummond Hamilton Download PDF EPUB FB2

Determination of thickness of barium stearate films; optical studies of built-up films The thickness of built-up barium stearate films has been measured from interference of monochromatic polarized light reflected by the film.1~ Jenkins and Norris8 varied the wave- length until the reflected intensity recorded by aspectrophotometer fell to a Cited by: The present paper reports a systematic study of the temperature dependence of d.c.

breakdown in “built-up” multilayer films of barium stearate in the temperature range ° to 40°C. Since “built-up” barium-stearate films seem to be promising for making dielectric devices, it has become essential to study their breakdown characteristics also.

The present paper reports a systematic study of the temperature dependence of d.c. breakdown in “built-up” multilayer films of barium stearate in the temperature range ° to Cited by: 9. Thin Solid Films, 8 () V. AGARWAL, V.

SRIVASTAVA 2. EXPERIMENTAL Deposition of barium stearate films Barium stearate films containing the desired number of layers were "built- up" on aluminized microscope glass slides by the well known technique of Blodgett and Langmuir9- by: The intensity of the light and dark fringes reflected by films built on a series of glasses of known refractive indices is used as a measure of n1.

Skeleton films. Barium stearate films built at pH. perceptible films on glass to increase the transmission of light.

Simultaneously, Dr. Katherine Blodgett, working on a project originally instituted by Dr. Irving Langmuir, employed films of barium stearate and other fatty acids to form a thin molecular surface on glass. The glass was dipped into a tank of liquid.

Films containing layers have been built of barium-copper stearate. A photograph shows films built in a series of steps having intervals of 2 molecular layers. Studies of built-up films by means of the polarized infrared ATR spectrum. Mixed films of stearic acid and barium stearate.

Journal of Colloid and Interface Science40 (3), DOI: /(72) TSUTOMU SEIMIYA, SHINPEI OHKI. Download full text in PDF Download. Share. Export.

Barium is a member of the alkaline-earth metals. The barium atom has a radius of pm and a Van der Waals radius of pm. Barium was discovered by Carl Wilhelm Scheele in and first isolated by Humphry Davy in In its elemental form, barium is a soft, silvery-gray metal. Phys.

Chem. All Publications/Website. OR SEARCH CITATIONS. In a practical application of this work Blodgett invented nonreflecting glass in by building up a molecule-thick film of barium stearate, a type of soap, on glass.

At that specific depth the reflection of the film neutralized the reflection of the glass since the troughs and crests of the waves were opposite of each other and canceled. The dielectric constant data (at MHz) on stearic acid thin films, obtained by using variable gap immersion method, are presented.

Many of the errors of the conventional universal bridge method. The table below contains links to refractive index data for common materials. Each material in the database has refractive index listed as a function of wavelength over a range typically required for thin-film thickness measurement.

Several studies were performed by this author, 58 including elemental analysis, IR spectroscopy, and x-ray analysis of samples of barium and calcium stearates reacted in moisture-free acetone with 50% of stoichiometric amount of HCl required to completely react with stabilizer.

Elemental analysis of the product of reaction showed that its concentration of carbon, hydrogen, oxygen, chlorine. There are various technologies like CVD.

Radio Frequency sputtering, spin coating etc. present for thin film deposition for various applications and for gas sensors. In this review, special attention is focused on the thin film deposition for gas sensing applications by using Langmuir Blodgett method. Langmuir Blodgett method also discussed briefly.

In she invented nonreflecting glass by building up a molecule thick film on the glass surface. Soon after this she developed a gauge to determine the thickness of these thin films.

The other methods for measuring this were only accurate to a few thousandths of an inch but Blodgett's way was accurate to about one millionth of an inch. Books. Publishing Support.

Login. Multiple Beam Interferometric Study of `Built-up' Films of Barium Stearate. V K Srivastava and Ajit Ram Verma. View abstract View article PDF. A direct determination of the metrical thickness of mono- and multi-molecular films of barium stearate has been carried out with the use of multiple beam.

An illustration of a magnifying glass. An illustration of a magnifying glass. An illustration of a horizontal line over an up pointing arrow.

Books. An illustration of two cells of a film strip. Video DETERMINATION OF THICKNESS AND REFRACTIVE INDEX OF THIN FILMS AS AN APPROACH TO THE STUDY OF BIOLOGICAL MACROMOLECULES". OGIS GmbH Grafenberger-Allee Düsseldorf (Germany) Phone +49 (0) - Fax +49 (0) - Email [email protected]

LB films have also been used for the lubrication of magnetic tapes. The friction coefficient and wear of the tape has been shown to dramatically reduced by coating the tape with seven layers of barium stearate. The most significant passive application of LB films could however be for the alignment of .Barium is an X-ray absorber and appears white on X-ray film.

When instilled into the GI tract, barium coats the inside wall of the esophagus, stomach, large intestine, and/or small intestine so that the inside wall lining, size, shape, contour, and patency (openness) are visible on X-ray.Blodgett, K.B.

() Films built by depositing successive monomolecular layers on a solid surface. J. Amer. Chem. Soc., 57, CrossRef Google Scholar. Blodgett, K.B. and Langmuir, I.

() Built-up films of barium stearate and their optical properties. Davies, G.H. and Yarwood, J. () Infra-red intensity and band shape studies of.