Electrodeposition of Superlattices and Multilayers

Switzer, Jay A.

doi:10.1002/9783527612789.ch03

Cited by 22 publications

(21 citation statements)

References 121 publications

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“…The control of chemical by spin effects is aw ell-established field [1,2] that has been investigated by applying photochemistry [3] as well as various magnetic and electrochemical methods. [4,5] Spin was also found to be important in defining the final product in multielectron reactions. [6] In recent years, it was determined that electron spin is related to spinselective electron transport through chiral molecules.T his phenomenon is known as the chiral-induced spin selectivity (CISS) effect.…”

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confidence: 99%

Magnetless Device for Conducting Three‐Dimensional Spin‐Specific Electrochemistry

et al. 2017

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Electron spin states play an important role in many chemical processes.M ost spin-state studies require the application of am agnetic field. Recently it was found that the transport of electrons through chiral molecules also depends on their spin states and may also play ar ole in enantiorecognition. Electrochemistry is an important tool for studying spinspecific processes and enantioseparation of chiral molecules.A new device is presented, which serves as the working electrode in electrochemical cells and is capable of providing information on the correlation of spin selectivity and the electrochemical process.The device is based on the Hall effect and it eliminates the need to apply an external magnetic field. Spinselective electron transfer through chiral molecules can be monitored and the relationship between the enantiorecognition process and the spin of electrons elucidated.

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confidence: 99%

Magnetless Device for Conducting Three‐Dimensional Spin‐Specific Electrochemistry

et al. 2017

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“…They are composed of alternating layers of materials, with a bilayer thickness known as the modulation wavelength. Although multilayers and superlattices are both modulated materials, superlattices have the additional constraint that they are crystallographically coherent [244]. Because of this constraint, superlattices are usually produced with alternate layers of materials with very low lattice mismatch, whereas multilayers can be produced using even amorphous materials.…”

Section: Multilayersmentioning

confidence: 99%

“…Electrodeposition can be applied to the synthesis of such materials, and has several advantages [252,253], including: (i) a low processing temperature (often room temperature) which minimizes atom interdiffusion between the layers; (ii) the film thickness can be controlled by monitoring the deposition charge; (iii) the composition and defect chemistry can be controlled through the applied potential; (iv) complex shaped film depositions can be made; and…”

Section: Multilayersmentioning

confidence: 99%

Nanostructured Materials Synthesized Using Electrochemical Techniques

Oliveira

Freitas

Mattoso

et al. 2008

Nanostructured Materials in Electrochemistry

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The visualization and/or handling of atom clusters, or even individual atoms, has been achieved during the past 25 years. One of the most practical instruments for this purpose is the tunneling microscope, which was invented during the 1980s. On such a small scale, materials properties are not the same as those of a macroscopicsized substance. The first occasion on which a scientist proposed atom handling was in 1959, when Professor Richard Feynman [1], during a lecture at the California Institute Technology, suggested that in the near future engineers would be able to take atoms and place them exactly where they wanted to, without -of courseinfringing the laws of Nature. Today, Professor Feynmans lecture, which was entitled There is Plenty of Room at the Bottom, is considered a milestone of the current technological and scientific era.We can define nanoscience as the study of the phenomena and handling of structures on the atomic, molecular and macromolecular scale, where at least one dimension is significantly less than the others. And nanotechnology includes the design, characterization, and production of devices and systems on a nanometer scale. This definition of nanotechnology is wide-ranging, it is not a specific technology, all of the techniques based on physics, chemistry, biology, materials science and engineering -and/or using computers -leading to the development of materials and tools in such a way that the common point among them is the reduced dimension in which they operate. Among these applications are: increased storage and processing capacity for computers; the creation of new mechanisms for drug delivery; and the production of materials which are both lighter and more resistant than metals and plastics. Additional benefits of nanotechnology developments include energy saving, environmental protection, and the more efficient use of increasingly scarce raw materials.Today, these new investigations into material fabrication are focused mainly on nanostructured devices or, at least, microdevices. The most-often used technique for j117 Nanostructured Materials in Electrochemistry. Edited by Ali Eftekhari

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“…A single‐electron transistor operating at room temperature was recently fabricated by an electrochemical method involving localized anodic oxidation in a humid environment of smooth ultrathin Nb films on insulating SiO 2 /Si substrates with use of a biased atomic force microscope tip to define source, drain, and gate (Shirakashi et al, 1998). Many novel nanostructures have been fabricated by electrodeposition (Hansen et al, 2002; Kolb, 2002; Lorenz and Plieth, 1998), including nanoclusters containing a few dozen atoms in precise locations and arrays (Engelmann et al, 1998; Kolb et al, 1999; Poetzschke et al, 1999; Ullmann et al, 1993; Ziegler et al, 1999), insertion of specific ions into specific molecular sites (Claye et al, 2000), atomic layer epitaxy (Stickney, 2002), as well as electrochemical fabrication of nanowires (Fasol, 1998; Fasol and Runge, 1997), nanocubes (Liu et al, 2003), superlattices (Switzer, 2001), and atomically layered nanostructures (Kothari et al, 2002) and materials having unique optical (Ali and Foss, 1999; Dang et al, 2000), magnetic (Kelly et al, 2000), and catalytic (Cheng and Dong, 2000) properties. The formation of abalone shells involves a hierarchical assembly of calcium carbonate that grows epitaxially in a layered structure that is mediated by the action of several proteins acting simultaneously over very wide length scales (Belcher et al, 1996). Attempts to replicate naturally occurring structures with synthetic systems are leading to ion‐peptide systems that are remarkably similar to electrodeposition additives.…”

Section: Discovery and Innovation: The Science Basementioning

confidence: 99%

“…Many novel nanostructures have been fabricated by electrodeposition (Hansen et al, 2002; Kolb, 2002; Lorenz and Plieth, 1998), including nanoclusters containing a few dozen atoms in precise locations and arrays (Engelmann et al, 1998; Kolb et al, 1999; Poetzschke et al, 1999; Ullmann et al, 1993; Ziegler et al, 1999), insertion of specific ions into specific molecular sites (Claye et al, 2000), atomic layer epitaxy (Stickney, 2002), as well as electrochemical fabrication of nanowires (Fasol, 1998; Fasol and Runge, 1997), nanocubes (Liu et al, 2003), superlattices (Switzer, 2001), and atomically layered nanostructures (Kothari et al, 2002) and materials having unique optical (Ali and Foss, 1999; Dang et al, 2000), magnetic (Kelly et al, 2000), and catalytic (Cheng and Dong, 2000) properties.…”

Section: Discovery and Innovation: The Science Basementioning

confidence: 99%