Shape of nanometer-size supported gold clusters studied by scanning tunneling microscopy

Li, Y.Z.; Reifenberger, R.; Choi, E.; Andres, R. P.

doi:10.1016/0039-6028(91)90703-u

Cited by 29 publications

(7 citation statements)

References 13 publications

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“…There is a subtle interplay of the interface energy, electronic band structure of the substrate, and surface corrugation. These various aspects have already been investigated in great detail, especially from the structural point of view, both experimentally [8,9,10] and theoretically [11,12,13,14,15,16,17,18]. The situation becomes even more involved when one considers the deposition dynamics itself.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of cluster deposition on Ar surface

et al. 2007

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Abstract. Using a combined quantum mechanical/classical method, we study the dynamics of deposition of small Na clusters on Ar(001) surface. We work out basic mechanisms by systematic variation of substrate activity, impact energy, cluster orientations, cluster sizes, and charges. The soft Ar material is found to serve as an extremely efficient shock absorber which provides cluster capture in a broad range of impact energies. Reflection is only observed in combination with destruction of the substrate. The kinetic energy of the impinging cluster is rapidly transfered at first impact. The distribution of the collision energy over the substrate proceeds very fast with velocity of sound. The full thermalization of ionic and atomic energies goes at a much slower pace with times of several ps. Charged clusters are found to have a much stronger interface interaction and thus get in significantly closer contact with the surface.

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Section: Introductionmentioning

confidence: 99%

Dynamics of cluster deposition on Ar surface

et al. 2007

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“…The rods are mounted such that the ratio R/r 0 ϭ1. 16. The entrance section of the quad is 25.4 cm long.…”

Section: Compressing Quadrupole Trapmentioning

confidence: 99%

“…1 One approach to the sensitivity problem is to increase the output from the cluster source, and this has been done successfully for small clusters by several groups. [2][3][4][5][6][7][8][9][10][11][12] For large clusters ͑100-1000 s atoms/cluster͒, controlling growth conditions in a gas-aggregation source can yield clusters in a narrow size range, [13][14][15][16][17][18][19][20][21][22][23] but this approach is not applicable to the smaller sizes of interest to us. It is also possible to study the deposited clusters with more sensitive surface analysis tools, such as scanning probe microscopy, 24,25 however, much of the chemical information is lost.…”

Section: Introductionmentioning

confidence: 99%

A phase-space-compressing, mass-selecting beamline for hyperthermal, focused ion beam deposition

Boyd

Łapicki

Aizawa

et al. 1998

Review of Scientific Instruments

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Articles you may be interested inElectrostatic ion beam trap for electron collision studies Rev. Sci. Instrum. 76, 013104 (2005); 10.1063/1.1832192Aberrations due to solenoid focusing of a multiply charged high-current ion beam Rev.Characteristics of focused beam spots using negative ion beams from a compact surface plasma source and merits for new applications Development of wide range energy focused ion beam lithography systemWe have developed an ion beamline for hyperthermal ion-surface collisions that incorporates a phase-space compressor to improve the focusability/current density of the ion beam in the 1-10 eV deposition energy range. In essence, collisional damping is used to substantially improve the brightness of the ion source. In addition to the focusing behavior, the beamline also accomplishes mass selection, source-target pressure reduction of Ͼ10 10 , confinement of the beam to avoid space charge spreading, and hyperthermal energy beam transport. For our application the requirement is moderately tight ͑100 s of microns͒ focusing at hyperthermal energies ͑1-100 eV͒, but the principle should also be applicable to improving spot sizes/current densities at higher energies.

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“…В [225] была исследована форма заранее изготовленных сферических кластеров с радиусами от 1 до 6 нм после осаждения на подложку из того же материала (золота). Осажденные частицы имели форму тюбетеек с радиусами кривизны, превышающими радиусы свободных частиц и не обнаруживающими корреля ции с ними Исследования, проведенные при помощи туннельного микроскопа, показали, чтo 80% частиц имели радиус кривизны между 10 и 30 нм.…”

Section: 2unclassified

Small metal particles

Nagaev¹

1992

Uspekhi Fizicheskikh Nauk

102

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Shape of nanometer-size supported gold clusters studied by scanning tunneling microscopy

Cited by 29 publications

References 13 publications

Dynamics of cluster deposition on Ar surface

Dynamics of cluster deposition on Ar surface

A phase-space-compressing, mass-selecting beamline for hyperthermal, focused ion beam deposition

Small metal particles

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