Comparative performance of high and medium resolution cameras for defect detection in carbon-fiber reinforced composites by digital shearography

The performance of defect detection in composite materials using digital shearography is important for correct decision-making in non-destructive testing. In this work, we compared a high-resolution 24-megapixel digital still camera (DSLR) and a conventional medium-resolution 5-megapixel camera to determine the detectability of blind holes in...

An Approach for High-Angular Resolution Implementation in Moving Automotive MIMO Radar

A method exploiting the movement of the vehicle to boost the cross-range resolution of automotive radar by forming a larger virtual array is proposed. Initial simulated results show that the proposed method with the traditional Digital beamforming (DBF) algorithm can separate targets that cannot be otherwise recognized by the traditional MIMO...

High-Order Isogeometric Methods for Compressible Flows: II: Compressible Euler Equations

This work extends the high-resolution isogeometric analysis approach established in chapter “High-Order Isogeometric Methods for Compressible Flows. I: Scalar Conservation Laws” (Jaeschke and Möller: High-order isogeometric methods for compressible flows. I. Scalar conservation Laws. In: Proceedings of the 19th International Conference on...

Adaptive optics plug-and-play setup for high-resolution microscopes with multi-actuator adaptive lens

Adaptive Optics (AO) has revealed as a very promising technique for high-resolution microscopy, where the presence of optical aberrations can easily compromise the image quality. Typical AO systems however, are almost impossible to implement on commercial microscopes. We propose a simple approach by using a Multi-actuator Adaptive Lens (MAL)...

Non-contact distance measurement and profilometry using thermal near-field radiation towards a high resolution inspection and metrology solution

Optical near-field technologies such as solid immersion lenses and hyperlenses are candidate solutions for high resolution and high throughput wafer inspection and metrology for the next technology nodes. Besides sub-diffraction limited optical performance, these concepts share the necessity of extreme proximity to the sample at distances that...

Stereo vision with consumer grade high resolution cameras for a micro air vehicle

We construct a stereo vision system mounted on a micro air vehicle applying two high resolution consumer grade cameras. The system hardware and mechanical configuration are presented. A novel image processing algorithm specifically suited for high resolution stereo images is described, and its properties are discussed. Empirical data from...

First experiences with High Resolution Imagery Based Adjudication Approach for Social Tenure Domain Model in Ethiopia

Since the start of the 21st century, great progress has been made with rural land certification in Ethiopia. This process, however, has been mainly confined to the so called first phase certificates. These certificates do identify the land holding households (with name etc. and photographs), but limit the geo-referencing to indicating the size ...

Tree filtering for high density airborne LiDAR data

A high resolution Airborne LiDAR data creates better opportunity for an individual tree measurement and provides valuable results for more precise forest inventory. This paper presents tree filtering approach that able to separate dominant tree and undergrowth vegetation. The results can be used for a detailed individual tree measurement. This...

Sub-10 nm structures written in ultra-thin HSQ resist layers, using Electron Beam Lithography

Isolated dots and lines with 6 nm width were written in 20 nm thick Hydrogen silsesquioxane (HSQ) layers on silicon substrates, using 100 keV electron beam lithography. The main factors that might limit the resolution, i.e. beam size, writing strategy, resist material, electron dose, development process, are discussed. We demonstrate that, by...

Simulation of Three Phase Flow in Porous Media Using a High-Resolution Central Scheme

This article aims to demonstrate the advantages of using a high resolution central scheme in the field of multiphase flow in porous media. The black oil model, used in the petroleum reservoir engineering, is employed as it generally provides an acceptable model for most reservoirs and recovery processes. The governing equations are split into a...

Modeling of the wave breaking with CICSAM and HRIC high resolution schemes

The paper concerns modeling of two-phase flow with the volume of fluid method (VOF) and two high-resolution advection schemes based on the normalized variable diagram (NVD). Compressive Interface Capturing Scheme for Arbitrary Meshes (CICSAM) and High Resolution Interface Capturing scheme (HRIC). Both considered schemes are used to discretize...

Large Eddy Simulation of Bifurcating and Transitional Suddenly Expanded Flows

Implicit Large Eddy Simulation (ILES) using high-resolution methods have been employed in the investigation of bifurcation and transition of flow through three dimensional suddenly-expanded channels. ILES refers to high-resolution methods employed in spatially under-resolved simulations of turbulent flows without the need to resort to turbulence...

Measuring the near-field of extra-ordinary transmission through a periodic hole-array

The knowledge of the near-field of extra-ordinary transmission through hole-arrays is mostly theoretical; there is less experimental validation of the theory. We study the near-field properties by measuring fluorescent molecules that are immersed in a solution and their Brownian motion. The measurements are performed by filling the space above...

A novel concept for a mid-field microscope

When light passes through a hole smaller than the wavelength of the light, the transmission is very low and the light is diffracted. This however changes if holes are arranged in a periodic array on metal. In that case the light couples to surface plasmons; this results in enhanced transmission, spectral selection and a small angular diffraction...

Toward the development of a Three-Dimensional Mid–Field Microscope

Recently, an extraordinary transmission of light through small holes (<200 nm) in a thin metallic film has been described. This phenomenon has been shown to be the result of the photon-plasmon interaction in thin films where a periodic structure (such as a set of holes) is embedded in the film. One of the extraordinary results is that the beam...