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Robert E. Walkup
Researcher at IBM
Publications - 63
Citations - 4043
Robert E. Walkup is an academic researcher from IBM. The author has contributed to research in topics: Excited state & Ion. The author has an hindex of 28, co-authored 62 publications receiving 3956 citations.
Papers
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Journal ArticleDOI
Atomic scale desorption through electronic and vibrational excitation mechanisms
T. C. Shen,C. Wang,G. C. Abeln,J. R. Tucker,Joseph W. Lyding,Phaedon Avouris,Robert E. Walkup +6 more
TL;DR: The scanning tunneling microscope has been used to desorb hydrogen from hydrogen-terminated silicon surfaces and a countable number of desorption sites can be created and the yield and cross section are obtained.
Journal ArticleDOI
Deformation of carbon nanotubes by surface van der Waals forces
TL;DR: In this article, the strength and effect of surface van der Waals forces on the shape of multiwalled and single-walled carbon nanotubes was investigated using atomic-force microscopy, continuum mechanics, and molecular-mechanics simulations.
Patent
Multi-petascale highly efficient parallel supercomputer
Sameh W. Asaad,Ralph Bellofatto,Michael A. Blocksome,Matthias A. Blumrich,Peter Boyle,Jose R. Brunheroto,Dong Chen,Chen-Yong Cher,George Liang-Tai Chiu,N. H. Christ,Paul W. Coteus,Kristan D. Davis,Gabor Dozsa,Alexandre E. Eichenberger,Noel A. Eisley,Matthew R. Ellavsky,Kahn C. Evans,Bruce M. Fleischer,Thomas W. Fox,Alan Gara,Mark E. Giampapa,Thomas M. Gooding,Michael K. Gschwind,John A. Gunnels,Shawn A. Hall,Rudolf A. Haring,Philip Heidelberger,Todd A. Inglett,Brant L. Knudson,Gerard V. Kopcsay,Sameer Kumar,Amith R. Mamidala,James Anthony Marcella,Mark G. Megerian,Douglas R. Miller,Samuel J. Miller,Adam J. Muff,Michael B. Mundy,John Kevin Patrick O'Brien,Kathryn M. O'Brien,Martin Ohmacht,Jeffrey J. Parker,Ruth J. Poole,Joseph D. Ratterman,Valentina Salapura,David L. Satterfield,Robert M. Senger,Brian E. Smith,Burkhard Steinmacher-Burow,William Maupin Stockdell,Craig B. Stunkel,Krishnan Sugavanam,Yutaka Sugawara,Todd E. Takken,Barry M. Trager,James L. Van Oosten,Charles D. Wait,Robert E. Walkup,Alfred T. Watson,Robert W. Wisniewski,Peng Wu +60 more
TL;DR: A multi-petascale Highly Efficient Parallel Supercomputer of 100 petaOPS-scale computing, at decreased cost, power and footprint, allows for a maximum packaging density of processing nodes from an interconnect point of view.
Journal ArticleDOI
Carbon nanotubes: nanomechanics, manipulation, and electronic devices
TL;DR: In this article, atomic force microscopy and molecular mechanics simulations are used to investigate the effects of van der Waals interactions on the atomic structure of adsorbed carbon nanotubes, and the conditions under which the structure of a nanotube will adjust to the topography of the substrate are defined.
Journal ArticleDOI
Dissociation of individual molecules with electrons from the tip of a scanning tunneling microscope.
TL;DR: The scanning tunneling microscope can be used to select a particular adsorbed molecule, probe its electronic structure, dissociate the molecule by using electrons from the STM tip, and then examine the dissociation products.