Publication

Simulation of self-assembled monolayers:microscopic structure of amino alkylthiols

1994
Book Chapters

Abstract

We present the results of mol. dynamics calcns. carried out on self-assembled monolayers (SAMs) formed from alkyl thiols chemisorbed on a gold (111) substrate. The alkyl tails are functionalized by polar groups (-NH2) with the potential of forming hydrogen bonds. Particular attention is focused on the prediction of the structural characteristics of the functionalized outer surface of the SAM in an attempt to make contact with scanning tunneling microscopy images. We examine the dependence of the predicted structure on the model used to represent the alkyl chains. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/fb75d69f-1bf7-4ea0-941e-b9722a686ee7

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1994
Book Chapters

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/fb75d69f-1bf7-4ea0-941e-b9722a686ee7

About this result

Related concepts (28)

Self-assembly

Self-assembly is a process in which a disordered system of pre-existing components forms an organized structure or pattern as a consequence of specific, local interactions among the components themselves, without external direction. When the constitutive components are molecules, the process is termed molecular self-assembly. Self-assembly can be classified as either static or dynamic. In static self-assembly, the ordered state forms as a system approaches equilibrium, reducing its free energy.

Scanning tunneling microscope

A scanning tunneling microscope (STM) is a type of microscope used for imaging surfaces at the atomic level. Its development in 1981 earned its inventors, Gerd Binnig and Heinrich Rohrer, then at IBM Zürich, the Nobel Prize in Physics in 1986. STM senses the surface by using an extremely sharp conducting tip that can distinguish features smaller than 0.1 nm with a 0.01 nm (10 pm) depth resolution. This means that individual atoms can routinely be imaged and manipulated.

Scanning probe microscopy

Scanning probe microscopy (SPM) is a branch of microscopy that forms images of surfaces using a physical probe that scans the specimen. SPM was founded in 1981, with the invention of the scanning tunneling microscope, an instrument for imaging surfaces at the atomic level. The first successful scanning tunneling microscope experiment was done by Gerd Binnig and Heinrich Rohrer. The key to their success was using a feedback loop to regulate gap distance between the sample and the probe.

Related publications (13)

Simulation of self-assembled monolayers:microscopic structure of amino alkylthiols

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