Fabrication of Nanoring Arrays by Sputter Redeposition Using Porous Alumina Templates

Hobbs, K. L.; Larson, Preston R.; Lian, Guoda; Keay, Joel C.; Johnson, Matthew B.

doi:10.1021/nl034835u

Cited by 166 publications

(120 citation statements)

References 19 publications

Supporting

Mentioning

119

Contrasting

Order By: Relevance

“…[6][7][8][9][10] AAO membrane is prepared from aluminum metal by electrochemical anodization in an electrolytic cell. While the technology of AAO and its application has a long history, 11 basic research on self-organization of nanostructures via AAO templates began much more recently, with self-organizing and prepattern guided anodization techniques.…”

Section: -5)mentioning

confidence: 99%

Simple Preparation of One-dimensional Metal Selenide Nanomaterials Using Anodic Aluminum Oxide Template

Piao¹

2012

Journal of Electrochemical Science and Technology

View full text Add to dashboard Cite

:Highly ordered and perforated anodic aluminum oxide membranes were prepared by anodic oxidation and subsequent removal of the barrier layer. By using these homemade anodic aluminum oxide membranes as templates, metal selenide nanowires and nanotubes were synthesized. The structure and composition of these one-dimensional nanomaterials were studied by field emission scanning electron microscopy as well as transmission electron microscopy and energy dispersive Xray spectroscopy. The growth process of metal selenide inside anodic aluminum oxide channel was traced by investigating the series of samples using scanning electron microscopy after reacting for different times. Straight and dense copper selenide and silver selenide nanowires with a uniform diameter were successfully prepared. In case of nickel selenide, nanotubes were preferentially formed. Phase and crystallinity of the nanostructured materials were also investigated.

show abstract

Section: -5)mentioning

confidence: 99%

Simple Preparation of One-dimensional Metal Selenide Nanomaterials Using Anodic Aluminum Oxide Template

Piao¹

2012

Journal of Electrochemical Science and Technology

View full text Add to dashboard Cite

show abstract

“…Nanorings have been produced by a variety of methods, such as the coating of nanoparticles (Larsson et al, 2007;He at al 2010), the use of templates (Hobbs et al, 2004), the agglomeration of nanoclusters (Mishra et al, 2007), deposition on block co-polymers (Zahr and Blum, 2012;Wang et al, 2011), partial capping of quantum dots (Stoffel et al, 2009) and droplet epitaxy (Somaschini et al, 2009;Li and Yang, 2008). Most of these techniques are strain-free, except for the partial capping process, which typically involves significant intermixing producing a non-uniformly alloyed quantum ring (Hanke et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

The stability of elastically strained nanorings and the formation of quantum dot molecules

Gill

2015

Journal of the Mechanics and Physics of Solids

View full text Add to dashboard Cite

Self-assembled nanorings have recently been identified in a number of heteroepitaxially strained material systems. Under some circumstances these rings have been observed to break up into ringshaped quantum dot molecules. A general non-linear model for the elastic strain energy of nonaxisymmetric epitaxially strained nanostructures beyond the small slope assumption is developed. This model is then used to investigate the stability of strained nanorings evolving via surface diffusion subject to perturbations around their circumference. An expression for the fastest growing mode is determined and related to experimental observations. The model predicts a region of stability for rings below a critical radius, and also a region for larger rings which have a proportionally small thickness. The predictions of the model are shown to be consistent with the available results. For the heteroepitaxial InP on In 0.5 Ga 0.5 P system investigated by Jevasuwan et al. (2013), the nanorings are found to be stable below a certain critical size. This is in good quantitative agreement with the model predictions. At larger sizes, the rings are unstable. The number of dots in the resulting quantum dot molecule is similar to the mode number for the fastest growing mode. Second order terms show that the number of dots is expected to reduce as the height of the ring increases in proportion to its thickness. The strained In 0.4 Ga 0.6 As on GaAs nanorings of Hanke et al (2007) are always stable and this is in accordance with the findings of the analysis. The Au nanorings of Ruffino et al. (2011) are stable as well, even as they expand during annealing. This observation is also shown to be consistent with the proposed model, which is expected to be useful in the design and tailoring of heteroepitaxial systems for the self-organisation of quantum dot molecules.

show abstract

“…There are several methods for preparation of such rings. For example, gold rings can be designed by using templates of suitable structure in combination with metal deposition via ion beam etching [17,18]. More recently, Yan et al have prepared gold rings by selective wetting of porous templates using polymer membranes [19].…”

Section: Introductionmentioning

confidence: 99%

Quantum transport in an array of mesoscopic rings: Effect of interface geometry

Dutta¹,

Maiti²,

Karmakar³

2010

Solid State Communications

View full text Add to dashboard Cite

Electron transport properties are investigated in an array of mesoscopic rings, where each ring is threaded by a magnetic flux φ. The array is attached to two semi-infinite one-dimensional metallic electrodes, namely, source and drain, where the rings are considered either in series or in parallel configuration. A simple tight-binding model is used to describe the system and all the calculations are done based on the Green's function formalism. Here, we present conductance-energy and current-voltage characteristics in terms of ring-to-electrode coupling strength, ring-electrode interface geometry and magnetic flux. Most interestingly it is observed that, typical current amplitude in an array of mesoscopic rings in the series configuration is much larger compared to that in parallel configuration of those rings. This feature is completely different from the classical analogy which may provide an important signature in designing nano-scale electronic devices.

show abstract

Fabrication of Nanoring Arrays by Sputter Redeposition Using Porous Alumina Templates

Cited by 166 publications

References 19 publications

Simple Preparation of One-dimensional Metal Selenide Nanomaterials Using Anodic Aluminum Oxide Template

Simple Preparation of One-dimensional Metal Selenide Nanomaterials Using Anodic Aluminum Oxide Template

The stability of elastically strained nanorings and the formation of quantum dot molecules

Quantum transport in an array of mesoscopic rings: Effect of interface geometry

Contact Info

Product

Resources

About