Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Costantino S. Yannoni"'
Autor:
Costantino S. Yannoni, K.Y. Yasumura, Daniel Rugar, T. D. Stowe, B. C. Stipe, Thomas W. Kenny, Harry Jonathon Mamin
Publikováno v:
Applied Physics A. 72:S3-S10
We report detection of forces as small as 1.4 × 10-18 N in a 1 Hz bandwidth using ultrathin silicon cantilevers operating at liquid helium temperatures. Cantilever fabrication, the importance of surface cleanliness and various measurement issues are
Publikováno v:
Physical Review B. 57:1108-1114
Electron-spin resonance of ${E}^{\ensuremath{'}}$ centers in vitreous silica was studied using force-detection techniques at temperatures down to 5 K. Cyclic adiabatic inversion of electron spins was performed by frequency modulation of the applied m
Publikováno v:
Journal of Applied Physics. 79:1881-1884
A magnetic resonance force microscope was used to demonstrate three‐dimensional nuclear magnetic resonance imaging with micrometer‐scale spatial resolution. The sample was mounted on a silicon nitride cantilever that served as a micromechanical f
Autor:
John A. Sidles, Costantino S. Yannoni, K. J. Bruland, Joseph L. Garbini, O. Züger, Daniel Rugar, S. Hoen
Publikováno v:
Reviews of Modern Physics. 67:249-265
Recent initial experiments in magnetic resonance force microscopy (MRFM) have detected the magnetic force exerted by electrons and nuclei in microscopic samples. The experiments generate a force signal by modulating the sample magnetization with stan
Autor:
Harry C. Dorn, Ching-Hwa Kiang, P. Burbank, Steven Stevenson, Jr. Haynes, P.H.M. van Loosdrecht, Costantino S. Yannoni, Jesse R. Salem, Kim Harich, Robert D. Johnson, Donald S. Bethune, M.S. de Vries
Publikováno v:
Analytical Chemistry, 66(17). AMER CHEMICAL SOC INC
We describe an automated HPLC separation of the endohedral metallofullerenes such as SCC{sub 2n} and YC{sub 2n} from empty-cage fullerenes utilizing two polystyrene chromatographic columns (500 and 1000 A) in series. Rapid separation of the metallofu
Autor:
Costantino S. Yannoni, Ching-Hwa Kiang, Jesse R. Salem, Kim Harich, M.S. de Vries, Robert Beyers, Donald S. Bethune, Robert D. Johnson, S. Stevenson, Harry C. Dorn, P. Burbank
Publikováno v:
Nature. 370:196-199
IT was first proposed in 1985 that fullerenes can confine atoms in their interior because of their closed-cage structure. Attempts to verify this conjecture following the mass production of fullerenes have yielded metallofullerenes in bulk, and there
Publikováno v:
Nature. 366:123-128
Encapsulating atoms or molecules inside fullerene cages could give rise to a myriad of novel molecules and materials. The existence of such species is now strongly supported by a growing body of experimental evidence. Fullerene& ndash;metal complexes
Autor:
J. DiCarlo, Costantino S. Yannoni, Robert D. Johnson, Mattanjah S. de Vries, Zhi-Xun Shen, Frank Bridges, Corwin H. Booth, Jesse R. Salem, Piero Pianetta, Barrett Wells, C. H. Park, Donald S. Bethune
Publikováno v:
Chemical Physics Letters. 213:196-201
EXAFS experiments on a fullerene sample containing both YC82 and Y2C82 are reported, performed both at 10 K and at room temperature, to probe the structural environment of the yttrium atoms. The results are similar at both temperatures. The data can
Autor:
James R. Lyerla, H. R. Wendt, Donald S. Bethune, Robert D. Johnson, Larry T. Taylor, D. Nguyen, Jesse R. Salem, Costantino S. Yannoni, R.L. Siemens, Mark Hoinkis, M. S. Crowder, Harry C. Dorn, Charles A. Brown, M.S. de Vries, P. Jedrzejewski
Publikováno v:
Synthetic Metals. 59:279-295
The results of a variety of experiments used to characterize fullerenes, metallofullerenes and alkali-metal intercalated C60 are reported. It is shown that differential scanning calorimetry and NMR characterization of the orientational phase transiti
Autor:
Jesse R. Salem, Robert D. Johnson, Costantino S. Yannoni, Mark Hoinkis, Mattanjah S. de Vries, Donald S. Bethune, M. S. Crowder
Publikováno v:
Zeitschrift f�r Physik D Atoms, Molecules and Clusters. 26:153-158
Fullerenes containing metal atoms and clusters can be formed by the arc-vaporization method. The electronic structure of these metallofullerenes can be probed using magnetic resonance techniques. Electron paramagnetic resonance (EPR) spectra of LaC82