Journal ArticleDOI
Positioning single atoms with a scanning tunnelling microscope
D. M. Eigler,E. K. Schweizer +1 more
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In this paper, Binnig and Rohrer used the scanning tunnelling microscope (STM) to position individual xenon atoms on a single-crystal nickel surface with atomic pre-cision.Abstract:
SINCE its invention in the early 1980s by Binnig and Rohrer1,2, the scanning tunnelling microscope (STM) has provided images of surfaces and adsorbed atoms and molecules with unprecedented resolution The STM has also been used to modify surfaces, for example by locally pinning molecules to a surface3 and by transfer of an atom from the STM tip to the surface4 Here we report the use of the STM at low temperatures (4 K) to position individual xenon atoms on a single-crystal nickel surface with atomic pre-cision This capacity has allowed us to fabricate rudimentary structures of our own design, atom by atom The processes we describe are in principle applicable to molecules also In view of the device-like characteristics reported for single atoms on surfaces5,6, the possibilities for perhaps the ultimate in device miniaturization are evidentread more
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Two-dimensional self-assembly of magic supramolecular clusters
TL;DR: In this article, low-temperature scanning tunnelling microscope (STM) observations of magic two-dimensional supramolecular clusters formed after low-coverage deposition of 1-nitronaphthalene (NN) molecules on a reconstructed Au(111) substrate.
Journal ArticleDOI
Microtribology today and tomorrow
TL;DR: Very lightweight sliding parts are beginning to be used in magnetic recording and micromechanical systems which require wear rates that are almost zero The wear of sliding surfaces subjected to light loads is primarily the result of surface interaction forces rather than of load or weight.
Journal ArticleDOI
Role of the surface state in the Kondo resonance width of a Co single adatom on Ag(111)
Q. L. Li,Chunxia Zheng,Rui-Qiang Wang,Bingfeng Miao,R. X. Cao,L. Sun,Di Wu,Yizheng Wu,Yizheng Wu,Shao-Chun Li,Baigeng Wang,Haifeng Ding +11 more
TL;DR: In this article, the role of the surface state on the Kondo effect with Co adatoms on a Ag(111) surface was investigated and quantitatively quantitatively utilizing an analytical model where the contributions of the bulk and surface states are weighted by their exchange values with the magnetic impurity.
Journal ArticleDOI
Single-Molecule Vibrational Spectroscopy and Inelastic-Tunneling-Electron-Induced Diffusion of Formate Adsorbed on Ni(110)
TL;DR: In this paper, the inelastic-tunneling-electron-induced vibrational excitation of single formate (HCOO− and DCOO−) molecules adsorbed on Ni(110) using a low-temperature scanning tunneling microscope (STM).
Journal ArticleDOI
Topographical control of ocular cell types for tissue engineering.
Kevin J. McHugh,Kevin J. McHugh,Kevin J. McHugh,Magali Saint-Geniez,Magali Saint-Geniez,Sarah L. Tao +5 more
TL;DR: Multiple methods for producing well-controlled topography are reviewed and optimal biomaterial scaffold design for cells of the cornea, retina, and lens are discussed and topographically patterned biomaterials better mimic native extracellular matrix.
References
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Journal ArticleDOI
Surface studies by scanning tunneling microscopy
TL;DR: In this paper, surface microscopy using vacuum tunneling has been demonstrated for the first time, and topographic pictures of surfaces on an atomic scale have been obtained for CaIrSn 4 and Au.
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Tunneling through a controllable vacuum gap
TL;DR: In this article, the first successful tunneling experiment with an externally and reproducibly adjustable vacuum gap is reported, based on the exponential dependence of the tunneling resistance on the width of the gap.
Journal ArticleDOI
Atomic-scale surface modifications using a tunnelling microscope
TL;DR: In this paper, an atomic-scale modification of the surface of a nearly perfect germanium crystal, effected by the tungsten tip of a tunnelling microscope, was reported.
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Negative Differential Resistance on the Atomic Scale: Implications for Atomic Scale Devices
In-Whan Lyo,Phaedon Avouris +1 more
TL;DR: scanning tunneling microscopy and scanning tunneling spectroscopy are shown that the current-voltage characteristics of a diode configuration consisting of an STM tip over specific sites of a boron-exposed silicon(111) surface exhibit NDR.
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Molecular manipulation using a tunnelling microscope
TL;DR: The accomplishment of the smallest yet, purposeful, spatially localized changes in matter, effected on a graphite surface is reported, believing that the changes result from the pinning of individual organic molecules to the graphite.