Self-assembled InAs quantum dot formation on GaAs ring-like nanostructure templates

Strom, N. W.; Wang, Zh. M.; Lee, Jihoon; AbuWaar, Ziad Y.; Mazur, Yu. I.; Salamo, Gregory J.

doi:10.1007/s11671-007-9040-1

Cited by 36 publications

(16 citation statements)

References 31 publications

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“…In the most widely used approach, group III metal droplets are crystallized under a group V atmosphere to form III/V semiconductor quantum dots [6][7][8][9][10], quantum dot molecules [12], or quantum ring complexes [13][14][15][16][17]. An alternative approach using a low group V flux is the local droplet etching (LDE), where group III metal droplets drill nanoholes into III/V-semiconductor surfaces [18][19][20][21][22][23][24][25]. An example for a surface with nanoholes after droplet etching is shown in Figure 1b.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of mass transport during nanohole drilling by local droplet etching

Heyn¹,

Bartsch²,

Sanguinetti³

et al. 2016

Nano Online

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Local droplet etching (LDE) utilizes metal droplets during molecular beam epitaxy for the self-assembled drilling of nanoholes into III/V semiconductor surfaces. An essential process during LDE is the removal of the deposited droplet material from its initial position during post-growth annealing. This paper studies the droplet material removal experimentally and discusses the results in terms of a simple model. The first set of experiments demonstrates that the droplet material is removed by detachment of atoms and spreading over the substrate surface. Further experiments establish that droplet etching requires a small arsenic background pressure to inhibit re-attachment of the detached atoms. Surfaces processed under completely minimized As pressure show no hole formation but instead a conservation of the initial droplets. Under consideration of these results, a simple kinetic scaling model of the etching process is proposed that quantitatively reproduces experimental data on the hole depth as a function of the process temperature and deposited amount of droplet material. Furthermore, the depth dependence of the hole side-facet angle is analyzed.

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Section: Introductionmentioning

confidence: 99%

Dynamics of mass transport during nanohole drilling by local droplet etching

Heyn¹,

Bartsch²,

Sanguinetti³

et al. 2016

Nano Online

View full text Add to dashboard Cite

show abstract

“…This approach uses templates to help a self-assembly process by modulating the energy profile. For instance, geometric templates have been used to guide the self-assembly of block copolymers [18], quantum dots [19,20], and nanocrystals [21]. The templating approach typically requires lithography to fabricate a pre-patterned substrate or mask as a template.…”

Section: Introductionmentioning

confidence: 99%

Growing large nanostructured superlattices from a continuum medium by sequential activation of self-assembly

Zhao

Lü

2011

Phys. Rev. E

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We propose a mechanism to grow a large superlattice of phase domains from a continuum homogenous binary film by sequential activation of self-assembly. Self-assembly was initiated in a small mobile region (where atoms could diffuse) to form a seed pattern, and then the mobile region was shifted gradually. This process led to a long-rang ordered superlattice regardless whether the seed was perfect or not, since the pattern quickly improved to a perfect superlattice along with the sequential activation. At bistable state the scanning velocity controlled the type of superlattice. Further exploration led to an intriguing finding which we call the self-activation of self-assembly, a domino effect where the self-assembly in a small region causes a long-range interaction that destabilizes its homogeneous neighbor and triggers the propagation of self-assembly to the entire system.

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“…In the past few years, a series of references on self-assembly have been reported such as self-assembled polyaniline nanorods synthesized by a facile route of dispersion polymerization (Bhadra and Sarkar 2009), self-assembled InAs quantum dot formation on GaAs ring-like nanostructure templates (Strom et al 2007), and synthesis and self-assembly of dibenzo [jk,mn] naphtha [2,1,8-fgh] thebenidinium derivates (Wu et al 2008). In addition, Susan and Gunnlaugsson (2008) described the new development of supramolecular lanthanide luminescent sensors and self-assemblies.…”

Section: Introductionmentioning

confidence: 99%

Determination of Trace Deoxyribonucleic Acid Based on a Room Temperature Phosphorescent Probe of Alizarin Red-piperidine Self-ordered Ring

Liu

Gao

et al. 2010

Analytical Letters

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This research combined the self-ordered ring (SOR) technology with solid substrate-room temperature phosphorimetry (SS-RTP) and developed a new (ARS) n -P-SOR (ARS is alizarin red S, (ARS) n refers to multiple ARS molecules, P is piperidine). (ARS) n -P-SOR could increase the number of ARS molecules in the biological target, which could further improve the sensitivity of SS-RTP. Thus, a new SS-RTP for the determination of trace deoxyribonucleic acid (DNA) was established using (ARS) n -P-SOR as a phosphorescent probe. This method was successfully applied to the determination of DNA in nectar. Meanwhile, the mechanism of determining trace DNA by (ARS) n -P-SOR was discussed.

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Self-assembled InAs quantum dot formation on GaAs ring-like nanostructure templates

Cited by 36 publications

References 31 publications

Dynamics of mass transport during nanohole drilling by local droplet etching

Dynamics of mass transport during nanohole drilling by local droplet etching

Growing large nanostructured superlattices from a continuum medium by sequential activation of self-assembly

Determination of Trace Deoxyribonucleic Acid Based on a Room Temperature Phosphorescent Probe of Alizarin Red-piperidine Self-ordered Ring

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