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Complex Nanostructures by Pulsed Droplet Epitaxy [PDF]

open access: yesNanomaterials and Nanotechnology, 2011
What makes three dimensional semiconductor quantum nanostructures so attractive is the possibility to tune their electronic properties by careful design of their size and composition. These parameters set the confinement potential of electrons and holes,
Noboyuki Koguchi   +3 more
doaj   +5 more sources

GaAs Nanowire Growth by MBE with Catalyst Forming Eutectic Points with Both Elements [PDF]

open access: yesNanomaterials
A3B5 nanowires are usually grown via the vapor-liquid-solid mechanism. Species from the vapor are incorporated into the nanowires using a catalyst droplet. Typically, the droplet is a low-melting-point eutectic alloy of catalyst and group III metal. This
Nickolay V. Sibirev   +5 more
doaj   +2 more sources

Lead Catalyzed GaAs Nanowires Grown by Molecular Beam Epitaxy [PDF]

open access: yesNanomaterials
This study investigates the growth of gallium arsenide nanowires, using lead as a catalyst. Typically, nanowires are grown through the vapor–solid–liquid mechanism, where a key factor is the reduction in the nucleation barrier beneath the catalyst ...
Igor V. Shtrom   +6 more
doaj   +2 more sources

Droplet Epitaxy Image Contrast in Mirror Electron Microscopy. [PDF]

open access: yesNanoscale Res Lett, 2017
Image simulation methods are applied to interpret mirror electron microscopy (MEM) images obtained from a movie of GaAs droplet epitaxy. Cylindrical symmetry of structures grown by droplet epitaxy is assumed in the simulations which reproduce the main features of the experimental MEM image contrast, demonstrating that droplet epitaxy can be studied in ...
Kennedy SM, Zheng CX, Jesson DE.
europepmc   +4 more sources

Independent Control Over Size and Surface Density of Droplet Epitaxial Nanostructures Using Ultra-Low Arsenic Fluxes

open access: yesNanomaterials, 2021
Modern and future nanoelectronic and nanophotonic applications require precise control of the size, shape and density of III-V quantum dots in order to predefine the characteristics of devices based on them.
Sergey V. Balakirev   +4 more
doaj   +1 more source

Enable a Facile Size Re-distribution of MBE-Grown Ga-Droplets via In Situ Pulsed Laser Shooting

open access: yesNanoscale Research Letters, 2021
A MBE-prepared Gallium (Ga)-droplet surface on GaAs (001) substrate is in situ irradiated by a single shot of UV pulsed laser. It demonstrates that laser shooting can facilely re-adjust the size of Ga-droplet and a special Ga-droplet of extremely broad ...
Biao Geng   +8 more
doaj   +1 more source

Modeling of Masked Droplet Deposition for Site-Controlled Ga Droplets

open access: yesNanomaterials, 2023
Site-controlled Ga droplets on AlGaAs substrates are fabricated using area-selective deposition of Ga through apertures in a mask during molecular beam epitaxy (MBE). The Ga droplets can be crystallized into GaAs quantum dots using a crystallization step
Stefan Feddersen   +4 more
doaj   +1 more source

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