Bathymetry of the Indonesian Sunda margin-relating morphological features of the upper plate slopes to the location and extent of the seismogenic zone [PDF]
Natural Hazards and Earth System Sciences, 2010 Earthquake history shows that the Sunda subduction zone of the Indonesian margin produces great earthquakes offshore Sumatra, whereas earthquakes of comparable magnitude are lacking offshore Java and the Lesser Sunda islands.
A. Krabbenhoeft +7 more
doaj +4 more sources
Optimization of Metal-Assisted Chemical Etching for Deep Silicon Nanostructures
Nanomaterials, 2021 High-aspect ratio silicon (Si) nanostructures are important for many applications. Metal-assisted chemical etching (MACE) is a wet-chemical method used for the fabrication of nanostructured Si.
Rabia Akan, Ulrich Vogt
doaj +1 more source
Design of Acoustic Bifocal Lenses Using a Fourier-Based Algorithm
Sensors, 2021 In this work, we develop a new design method based on fast Fourier transform (FFT) for implementing zone plates (ZPs) with bifocal focusing profiles. We show that the FFT of the governing binary sequence provides a discrete sequence of the same length ...
José Miguel Fuster +2 more
doaj +1 more source
Fractal generalized zone plates [PDF]
Journal of the Optical Society of America A, 2009 The construction of fractal generalized zone plates (FraGZPs) from a set of periodic diffractive optical elements with circular symmetry is proposed. This allows us to increase the number of foci of a conventional fractal zone plate (FraZP), keeping the self-similarity property within the axial irradiance.
Mendoza-Yero, Omel +5 more
openaire +4 more sources
Multifocal spectral diffractive lens [PDF]
Компьютерная оптика, 2018 We present a method for calculating a spectral multifocal diffractive lens that forms a given set of fixed-position foci at multiple operating wavelengths. It is based on minimizing a function represented as a squared absolute value of difference between
Leonid Doskolovich +2 more
doaj +1 more source
Micromachines, 2020 Zone plates are diffractive optics commonly used in X-ray microscopes. Here, we present a wet-chemical approach for fabricating high aspect ratio Pd/Si zone plate optics aimed at the hard X-ray regime.
Rabia Akan +7 more
doaj +1 more source
Journal of Materials Research and Technology, 2023 Accurate prediction of deformation behavior of metal plate in deformation zone is the key point for rolling cladding process. At present, there is a lack of accurate analytical model about the deformation of metal plate in deformation zone. Therefore, an
Lian-Yun Jiang +5 more
doaj +1 more source
Gene expression profiling reveals similarities between the spatial architectures of postnatal articular and growth plate cartilage. [PDF]
PLoS ONE, 2014 Articular and growth plate cartilage are discrete tissues but arise from a common cartilaginous condensation and have comparable spatial architectures consisting of distinct layers of chondrocytes.
Michael Chau +6 more
doaj +1 more source
Zone-plate focusing of Bose-Einstein condensates for atom optics and erasable high-speed lithography of quantum electronic components [PDF]
, 2009 We show that Fresnel zone plates, fabricated in a solid surface, can sharply focus atomic Bose-Einstein condensates that quantum reflect from the surface or pass through the etched holes.
A M Martin +17 more
core +2 more sources
Deep lithospheric structures along the southern central Chile Margin from wide-angle P-wave modellilng [PDF]
, 2009 Crustal- and upper-mantle structures of the subduction zone in south central Chile, between 42 degrees S and 46 degrees S, are determined from seismic wide-angle reflection and refraction data, using the seismic ray tracing method to calculate minimum ...
A. Krabbenhoeft +73 more
core +1 more source