TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

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Laser force microscope senses topography by moving a tungsten or silicon probe across a sample(typically a microelectronic component) at a height of a few nanometers. The tip is set vibrating at close to its resonance frequency. Attractive forces... called van der Waals attractions and the surface tension of water that condenses between tip and sample, pull on the tip, changing its resonance frequency and so reducing its vibration amplitude. The variation in the forces, and hence in tip travel, reveals surface relief. A laser probe tracks the tip by means of a beam that is split into two. One of the beams is reflected through a stationary prism; the other passes through a Bragg cell--a device that shifts the beam's frequency--and is reflected from the back of the probe. The beams are recombined, and their interference produces a signal(at the Bragg-cell frequency) that measures the tip vibration.  1, fiche 1, Anglais, - laser%20force%20microscope

Record number: 1, Textual support number: 1 PHR

Scanning laser force microscope.  2, fiche 1, Anglais, - laser%20force%20microscope

Fiche 1,  Justifications,  Français

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

... colloids are subject to two major forces :Van der Waals attraction [and] the electrostatic repulsive force, which relates to the surface charges of the colloids.  1, fiche 2, Anglais, - electrostatic%20repulsive%20force

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 CONT

[...] les colloïdes sont soumis à deux grands types de forces : [la] force de Van der Waals [et] la force de répulsion électrostatique, liée aux charges superficielles des colloïdes.  1, fiche 2, Français, - force%20de%20r%C3%A9pulsion%20%C3%A9lectrostatique

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 CONT

Molecules are usually forms into aggregates called clusters by the intermolecular force, and their physicochemical behavior is sometimes different from that of bulks. Clusters are classified into the van der Waals cluster, covalent cluster, hydrogen bond cluster, metal cluster, ionic bond cluster, and so on. These types of cluster are expected to be applied to surface modification and so on.  2, fiche 3, Anglais, - van%20der%20Waals%20cluster

Record number: 3, Textual support number: 2 CONT

This new model has been tested by comparing its predictions with the results of Molecular Dynamics (MD) simulations for the unimolecular evaporation of two types of van der Waals clusters: the aniline-(argon)n molecular clusters and the neat argon Arn clusters.  3, fiche 3, Anglais, - van%20der%20Waals%20cluster

Record number: 3, Textual support number: 1 OBS

cluster: An aggregate of molecules, consisting of two to several hundreds of molecules.  2, fiche 3, Anglais, - van%20der%20Waals%20cluster

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 CONT

Isomérisation et évaporation dans des agrégats de van der Waals. Résumé : Au cours de ce séminaire, nous présenterons les derniers résultats obtenus sur les dynamiques d'isomérisation et d'évaporation dans les agrégats de van der Waals aniline-Ar_n et benzene-Ar_n (n=7-25).  1, fiche 3, Français, - agr%C3%A9gat%20de%20van%20der%20Waals

Fiche 3,  Justifications,  Espagnol