[ { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/ty6w3-xn666", "eprint_id": 44158, "eprint_status": "archive", "datestamp": "2023-08-22 02:57:14", "lastmod": "2023-10-26 00:14:47", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Carson-D-G", "name": { "family": "Carson", "given": "Douglas G." } }, { "id": "Rossman-G-R", "name": { "family": "Rossman", "given": "George R." }, "orcid": "0000-0002-4571-6884" }, { "id": "Vaughan-R-W", "name": { "family": "Vaughan", "given": "Robert W." } } ] }, "title": "Orientation and Motion of Water Molecules in Cordierite:\n A Proton Nuclear Magnetic Resonance Study", "ispublished": "pub", "full_text_status": "restricted", "note": "\u00a9 1982 Springer-Verlag. Received December 5, 1980. This work was supported by National Science Foundation grants DMR-7721394 and EAR 77-23147. We thank Dr. Sunney Chan (Caltech) for helpful discussion.", "abstract": "Conventional and solid state proton nuclear magnetic resonance (NMR) techniques have been used to examine water molecules in the channels of a single crystal of cordierite, (Mg, Fe)_2Al_4Si_5O_(18), as a function of temperature, magnetic field, and orientation. Only one type of water was found rather than water in two distinct rigid orientations which were indicated by earlier infrared spectral studies. However, the measured dipolar splittings indicate that this water is in rapid motion. Shifts in the dipolar doublet due to Fe^(2+) impurities indicate that the water molecules are not moving among adjacent channel sites along a channel cavity. A two-site hopping model is proposed involving the major residence time spent with the hydrogen-hydrogen vector parallel to the channels, a minor residence time spent with the hydrogen-hydrogen vector perpendicular to the channels, and a short time (<1 \u03bcs) in transit. This model fits both the present NMR data and previously reported infrared absorption data and is compared to previously reported neutron diffraction data.", "date": "1982-02", "date_type": "published", "publication": "Physics and Chemistry of Minerals", "volume": "8", "number": "1", "publisher": "Springer", "pagerange": "14-19", "id_number": "CaltechAUTHORS:20140305-132358335", "issn": "0342-1791", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140305-132358335", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF", "grant_number": "DMR-7721394" }, { "agency": "NSF", "grant_number": "EAR 77-23147" } ] }, "other_numbering_system": { "items": [ { "id": "3501", "name": "Caltech Division of Geological and Planetary Sciences" } ] }, "local_group": { "items": [ { "id": "Division-of-Geological-and-Planetary-Sciences" } ] }, "doi": "10.1007/BF00311157", "resource_type": "article", "pub_year": "1982", "author_list": "Carson, Douglas G.; Rossman, George R.; et el." }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/gynvh-6e360", "eprint_id": 12027, "eprint_status": "archive", "datestamp": "2023-08-22 02:41:18", "lastmod": "2023-10-17 16:28:52", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Reimer-J-A", "name": { "family": "Reimer", "given": "J. A." } }, { "id": "Vaughan-R-W", "name": { "family": "Vaughan", "given": "R. W." } }, { "id": "Knights-J-C", "name": { "family": "Knights", "given": "J. C." } }, { "id": "Lujan-R-A", "name": { "family": "Lujan", "given": "R. A." } } ] }, "title": "Proton magnetic resonance spectra of plasma-deposited inorganic thin films", "ispublished": "pub", "full_text_status": "public", "keywords": "LINE WIDTHS, THIN FILMS, NUCLEAR MAGNETIC RESONANCE, HYDROGEN 1, NMR SPECTRA, HYDROGENATION, AMORPHOUS STATE, SILICON CARBIDES, SILICON NITRIDES, BORON, CARBON", "note": "\u00a9 1981 American Vacuum Society. \n\nReceived 11 March 1981; accepted 20 March 1981. \n\nThe authors thank S.I. Chan and T.M. Duncan for helpful comments on the manuscript and T.W. Sigmon for assistance with the Rutherford backscattering analysis. This work was supported by the National Science Foundation under Grant No. DMR 77-21394.\n\n
Published - REIjvst81.pdf
", "abstract": "Proton magnetic resonance data are presented for the hydrogen alloys of plasma-deposited amorphous boron, carbon, silicon carbide, and silicon nitride. Linewidth and lineshape analysis leads to the conclusion that hydrogen nuclei are clustered in a-Si/C:H, a-C:H, and a-Si/C:H. Both a-Si/C:H and a-C:H data show that the hydrogen exists in two phases. Modeling of line- widths in a-Si/C:H indicates that the two phases are heavily hydrogenated carbon clusters imbedded in a weakly hydrogenated a-Si lattice. Finally, evidence is presented for the presence of motionally narrowed hydrogen spectra in a-Si/N:H, a-B:H, and a-C:H. It is suggested that the hydrogen nuclei giving rise to these spectra are associated with disorder modes.", "date": "1981-05", "date_type": "published", "publication": "Journal of Vacuum Science and Technology", "volume": "19", "number": "1", "publisher": "American Vacuum Society", "pagerange": "53-56", "id_number": "CaltechAUTHORS:REIjvst81", "issn": "0022-5355", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:REIjvst81", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "National Science Foundation", "grant_number": "DMR 77-21394" } ] }, "doi": "10.1116/1.571016", "primary_object": { "basename": "REIjvst81.pdf", "url": "https://authors.library.caltech.edu/records/gynvh-6e360/files/REIjvst81.pdf" }, "resource_type": "article", "pub_year": "1981", "author_list": "Reimer, J. A.; Vaughan, R. W.; et el." }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/twc3s-32z42", "eprint_id": 85596, "eprint_status": "archive", "datestamp": "2023-08-19 10:04:59", "lastmod": "2024-01-14 19:31:47", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Vaughan-R-W", "name": { "family": "Vaughan", "given": "R. W." } }, { "id": "Schreiber-L-B", "name": { "family": "Schreiber", "given": "L. B." } }, { "id": "Schwarz-J-A", "name": { "family": "Schwarz", "given": "J. A." } } ] }, "title": "Use of High Resolution Solid State NMR Techniques for the Study of Adsorbed Species", "ispublished": "unpub", "full_text_status": "restricted", "note": "\u00a9 1976 American Chemical Society. \n\nPublished in print 1 June 1976. \n\nPortions of the work discussed in this paper were supported\nby the National Science Foundation and the Office of Naval\nResearch.", "abstract": "Recent years have seen the development of a variety of high resolution solid state nuclear magnetic resonance (NMR) techniques (1-7) that are allowing detailed characterization of the physical and chemical environment of adsorbed molecules or ions. Many of these techniques are still in the developing stages, and only preliminary results are available at this time. It will be the purpose of this paper to discuss recent results which we have obtained in the application of multiple pulse techniques to the characterization of protons, hydroxyl groups,on oxide-type surfaces (8), and to describe a recently introduced (9) multiple pulse double resonance (13C - 1H) technique for characterization of both chemical and local geometrical changes that occur upon adsorption of hydrocarbons on an oxide-type surface.\nNuclear Magnetic Resonance Techniques\nThe use of conventional pulsed NMR techniques (10), multiple pulse NMR techniques (1-3), and double resonance high resolution techniques (4-7,9) has been widely discussed.", "date": "1976-06-01", "date_type": "published", "publisher": "American Chemical Society", "place_of_pub": "Washington, DC", "pagerange": "275-290", "id_number": "CaltechAUTHORS:20180404-104618684", "isbn": "9780841203426", "book_title": "Magnetic Resonance in Colloid and Interface Science", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180404-104618684", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF" }, { "agency": "Office of Naval Research (ONR)" } ] }, "doi": "10.1021/bk-1976-0034.ch024", "resource_type": "book_section", "pub_year": "1976", "author_list": "Vaughan, R. W.; Schreiber, L. B.; et el." }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/1d86d-whx21", "eprint_id": 71369, "eprint_status": "archive", "datestamp": "2023-08-19 09:00:03", "lastmod": "2023-10-23 15:41:13", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Vaughan-R-W", "name": { "family": "Vaughan", "given": "Robert W." } } ] }, "title": "Application of Nuclear Magnetic Resonance to Solids: High Resolution Techniques", "ispublished": "pub", "full_text_status": "restricted", "note": "\u00a9 1974 Annual Reviews. \n\nThe author would like to express his appreciation to authors and publishers for allowing reproduction of Figures 3-7, and to C. R. Dybowski for a critical reading of the manuscript. Partial support for this work came from the National Science Foundation and the Petroleum Research Fund of the American Chemical Society.", "abstract": "Nuclear magnetic resonance (NMR) has long been a useful technique for the study of solids (1, 2). Within recent years, however, a number of advances have been made both along theoretical and experimental lines which hold promise to expand greatly the utility of nuclear magnetic resonance as an experimental technique for the study of physical and chemical phenomena in solids. Of particular importance are those techniques which are furnishing generally applicable means of measuring chemical shift tensors in solids for the first time. This review has been restricted to a discussion of those developing techniques which, among other possibilities, are allowing high resolution chemical shift tensor measurements in solids. No attempt will be made here for a definitive essay of the theoretical basis of these somewhat complex new techniques, but rather the emphasis will be placed on discussing the nature of the information they allow one to obtain on physical and chemical interactions within solid materials and what the present and future potentials and limitations of the techniques appear to be. \n\nRecent efforts in other aspects of solid state NMR have been reviewed (3-12), and the reader is particularly referred to the discussion of sample spinning techniques by Andrew (3), to the summary of theoretical developments in pulsed NMR by Mansfield (4), and to discussions of using NMR for the study of motional effects in solids (5-7) and of surface adsorbed species (8, 9). Additionally, attention is called to the development of more precise techniques for measuring moments of NMR lines by Lowe et al (13) and locating the center of such solid state lines by Kunitomo (14).", "date": "1974-08", "date_type": "published", "publication": "Annual Review of Materials Science", "volume": "4", "publisher": "Annual Reviews", "pagerange": "21-42", "id_number": "CaltechAUTHORS:20161021-153602341", "issn": "0084-6600", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161021-153602341", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NSF" }, { "agency": "American Chemical Society Petroleum Research Fund" } ] }, "doi": "10.1146/annurev.ms.04.080174.000321", "resource_type": "article", "pub_year": "1974", "author_list": "Vaughan, Robert W." }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/70kbr-19m67", "eprint_id": 54721, "eprint_status": "archive", "datestamp": "2023-08-19 07:00:09", "lastmod": "2023-10-20 20:08:57", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Manatt-S", "name": { "family": "Manatt", "given": "Stanley" } }, { "id": "Elleman-D-D", "name": { "family": "Elleman", "given": "Daniel D." } }, { "id": "Vaughan-R-W", "name": { "family": "Vaughan", "given": "Robert W." } }, { "id": "Chan-S-I", "name": { "family": "Chan", "given": "Sunney I." }, "orcid": "0000-0002-5348-2723" }, { "id": "Tsay-Fun-Dow", "name": { "family": "Tsay", "given": "Fun-Dow" } }, { "id": "Huntress-W-T-Jr", "name": { "family": "Huntress", "given": "Wesley T., Jr." } } ] }, "title": "Magnetic Resonance Studies of Lunar Samples", "ispublished": "pub", "full_text_status": "restricted", "note": "\u00a9 1970 American Association for the Advancement of Science.\n\n4 January 1970.\n\nWe thank D. B. Nash, M. M. Neugebauer, E. M. Bollin, P. C. Lauterbur for their many helpful discussions. I his paper is contribution No. 3998 from the Division of Chemistry and Chemical Engineering, California Institute of Technology. Sponsored under NASA contract No. NAS 7-100.", "abstract": "Electron spin resonance searches at 9.5 gigahertz on several fines samples and portions of several rocks have yielded signals whose lineshapes and temperature dependences show that the samples are principally ferromagnetic in nature. Proton magnetic resonance searches at 60 megahertz of these samples have not revealed any signals ascribable to water or any other types of hydrogen in concentrations greater than 0.0001 percent by weight contained in narrow lines (5 oersteds wide or less) and 0.01 percent by weight in wide lines (as wide as 100 oersteds).", "date": "1970-01-30", "date_type": "published", "publication": "Science", "volume": "167", "number": "3918", "publisher": "American Association for the Advancement of Science", "pagerange": "709-711", "id_number": "CaltechAUTHORS:20150211-111941293", "issn": "0036-8075", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150211-111941293", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA", "grant_number": "NAS 7-100" } ] }, "other_numbering_system": { "items": [ { "id": "3998", "name": "Caltech DIvision of Chemistry and Chemical Engineering" } ] }, "doi": "10.1126/science.167.3918.709", "resource_type": "article", "pub_year": "1970", "author_list": "Manatt, Stanley; Elleman, Daniel D.; et el." } ]