Negative Differential Resistance in Patterned Electroactive Self-Assembled Monolayers

Gorman, Christopher B.; Carroll, and Richard L.; Fuierer, Ryan R.

doi:10.1021/la010097i

Cited by 132 publications

(141 citation statements)

References 37 publications

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“…By designing and positioning the proper molecules in the device the desired functionality is obtained. SAMs have been used as molecular memories [21], molecular wires [22], and have exhibited negative differential resistance [23].…”

Section: A Self-assembled Monolayers (Sams) On Solid Substratesmentioning

confidence: 99%

Using self-assembly for the fabrication of nano-scale electronic and photonic devices

Parviz

Ryan

Whitesides

2003

IEEE Trans. Adv. Packag.

178

118

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Abstract-Challenges facing the scaling of microelectronics to sub-50 nm dimensions and the demanding material and structural requirements of integrated photonic and microelectromechanical systems suggest that alternative fabrication technologies are needed to produce nano-scale devices. Inspired by complex, functional, self-assembled structures and systems found in Nature we suggest that self-assembly can be employed as an effective tool for nanofabrication. We define a self-assembling system as one in which the elements of the system interact in pre-defined ways to spontaneously generate a higher order structure. Self-assembly is a parallel fabrication process that, at the molecular level, can generate three-dimensional structures with sub-nanometer precision. Guiding the process of self-assembly by external forces and geometrical constrains can reconfigure a system dynamically on demand. We survey some of the recent applications of self-assembly for nanofabrication of electronic and photonic devices. Five self-assembling systems are discussed: 1) self-assembled molecular monolayers; 2) self-assembly in supramolecular chemistry; 3) self-assembly of nanocrystals and nanowires; 4) self-assembly of phase-separated block copolymers; 5) colloidal self-assembly. These techniques can generate features ranging in size from a few angstroms to a few microns. We conclude with a discussion of the limitations and challenges facing self-assembly and some potential directions along which the development of self-assembly as a nanofabrication technology may proceed.

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Section: A Self-assembled Monolayers (Sams) On Solid Substratesmentioning

confidence: 99%

Using self-assembly for the fabrication of nano-scale electronic and photonic devices

Parviz

Ryan

Whitesides

2003

IEEE Trans. Adv. Packag.

178

118

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“…These monolayers can be easily oxidized and reduced in solution and are well characterized by electrochemical methods [3], although the mercaptoalkylferrocenes tend to aggregate and form multilayers [4]. Their localized electrical behavior was addressed by scanning probe methods finding a negative differential resistance effect caused by external oxygen, as well as thickness changes upon oxidation/reduction of the ferrocene moiety [5]. To further characterize the influence of the ferrocenes on the charge-transfer behavior of the molecule, it is desirable to manufacture mixed monolayers with isolated mercaptoalkylferrocenes embedded into a topographically well-defined matrix SAM of alkanethiols.…”

Section: Introductionmentioning

confidence: 99%

Self Assembly of Mixed Monolayers of Mercaptoundecylferrocene and Undecanethiol studied by STM

Müller‐Meskamp¹,

Lüssem²,

Karthäuser³

et al. 2007

J. Phys.: Conf. Ser.

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“…STM and C-AFM, in conjunction with methods including use of Hg-drop electrodes, have been used as promising tools for studying the electrical conductance of molecules along the molecular axis [267,268], crossed wires [269], and break junctions [270,271]. As early as the late 90s, the conductance of single molecules embedded in insulating SAM films was discussed and evaluated by Bumm et al [237] and others [272][273][274][275][276], by use of STM. It was, however, shown that estimation of the electrical conductance of adsorbed molecules by use of STM is quite complicated compared with techniques in which the electrode is directly attached to the molecules [267][268][269][270][271].…”

Section: Self Assembled Monolayersmentioning

confidence: 99%

Multidimensional electrochemical imaging in materials science

2007

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In the past 20 years the characterization of electroactive surfaces and electrode reactions by scanning probe techniques has advanced significantly, benefiting from instrumental and methodological developments in the field. Electrochemical and electrical analysis instruments are attractive tools for identifying regions of different electrochemical properties and chemical reactivity and contribute to the advancement of molecular electronics. Besides their function as a surface analytical device, they have proved to be unique tools for local synthesis of polymers, metal depots, clusters, etc. This review will focus primarily on progress made by use of scanning electrochemical microscopy (SECM), conductive AFM (C-AFM), electrochemical scanning tunneling microscopy (EC-STM), and surface potential measurements, for example Kelvin probe force microscopy (KFM), for multidimensional imaging of potential-dependent processes on metals and electrified surfaces modified with polymers and self assembled monolayers.

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Negative Differential Resistance in Patterned Electroactive Self-Assembled Monolayers

Cited by 132 publications

References 37 publications

Using self-assembly for the fabrication of nano-scale electronic and photonic devices

Using self-assembly for the fabrication of nano-scale electronic and photonic devices

Self Assembly of Mixed Monolayers of Mercaptoundecylferrocene and Undecanethiol studied by STM

Multidimensional electrochemical imaging in materials science

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