Results 11 to 20 of about 7,150 (272)
Nanohole etching in AlGaSb with Ga droplets [PDF]
Crystal Growth & Design, 2021 We demonstrate nanohole formation in AlGaSb by Ga droplet etching within a temperature range from 270°C to 500°C, allowing a wide range of tunability of the nanohole density. By leveraging the low vapor pressure of Sb, we can obtain high degree of control over droplet formation and nanohole etching steps and reveal the physics of adatom diffusion in ...
Hilska, Joonas +2 more
core +6 more sources
Thermally controlled widening of droplet etched nanoholes [PDF]
Nanoscale Research Letters, 2014 We describe a method to control the shape of nanoholes in GaAs (001) which combines the technique of local droplet etching using Ga droplets with long-time thermal annealing. The cone-like shape of inverted nanoholes formed by droplet etching is transformed during long-time annealing into widened holes with flat bottoms and reduced depth.
Christian Heyn +3 more
openaire +5 more sources
Fabrication of ultralow-density quantum dots by droplet etching epitaxy [PDF]
Journal of Materials Research, 2017 Abstract
Wu, J +4 more
openaire +4 more sources
CrystalsLocal droplet etching and subsequent refilling enables the fabrication of highly symmetric quantum dots with low fine structure splitting, suitable for generating polarization entangled photons.
Dennis Deutsch, Dirk Reuter
doaj +2 more sources
Monodisperse Micro-Droplet Generation in Microfluidic Channel with Asymmetric Cross-Sectional Shape
Micromachines, 2023 Micro-droplets are widely used in the fields of chemical and biological research, such as drug delivery, material synthesis, point-of-care diagnostics, and digital PCR.
Youngseo Cho +4 more
doaj +2 more sources
Low-Density InGaAs/AlGaAs Quantum Dots in Droplet-Etched Nanoholes. [PDF]
Nano LettOver the past two decades, epitaxial semiconductor quantum dots (QDs) have demonstrated very promising properties as sources of single photons and entangled photons on-demand. Among different growth methods, droplet etching epitaxy has allowed the growth of almost strain-free QDs, with low and controllable surface densities, small excitonic fine ...
Covre Da Silva SF +12 more
europepmc +4 more sources
Nanoscale Research Letters, 2011 In this work, we study metal droplets on a semiconductor surface that are the initial stage for both droplet epitaxy and local droplet etching. The distributions of droplet geometrical parameters such as height, radius and volume help to understand the ...
Lyamkina AA +5 more
doaj +1 more source
Long-range spontaneous droplet self-propulsion on wettability gradient surfaces
Scientific Reports, 2017 The directional and long-range droplet transportation is of great importance in microfluidic systems. However, it usually requires external energy input.
Chaoran Liu +6 more
doaj +2 more sources
Local droplet etching of a vicinal InGaAs(111)A metamorphic layer
Applied Surface ScienceWe demonstrated nanopit formation by Ga-assisted local droplet etching technique in InGaAs metamorphic layers grown on vicinal GaAs(111)A substrates. We studied nanopit formation depending on the substrate temperature, Ga flux and Ga amount. The etched pits show a highly symmetrical pyramidal shape with an equilateral triangular base and the edges of ...
Artur Tuktamyshev +2 more
exaly +3 more sources
Fabrication of EP@PDMS@F-SiO2 Superhydrophobic Composite Coating on Titanium Alloy Substrate [PDF]
BiomimeticsIn this study, a preparation method of superhydrophobic composite coating based on a titanium alloy (Ti-6Al-4V) substrate is proposed. The micro-scale pit array structure was fabricated via laser etching technology.
Chaoming Huang +6 more
doaj +2 more sources