Results 121 to 130 of about 28,100 (252)
Extended depth of field with absolute position detection in multi-wavelength digital holography [PDF]
, 2022 We present a novel approach for detecting the absolute position of surfaces in multi-wavelength holography. We extent the depth of field from ~0.08 mm to ~3 mm and get the absolute position with accuracies better than 10 ...
Carl, Daniel +4 more
core
Cone holography with Neumann boundary conditions and brane-localized gauge fields
Journal of High Energy PhysicsCone holography is a codimension-n doubly holographic model, which can be interpreted as the holographic dual of edge modes on defects. The initial model of cone holography is based on mixed boundary conditions. This paper formulates cone holography with
Zheng-Quan Cui, Yu Guo, Rong-Xin Miao
doaj +1 more source
Small, EarlyView.ABSTRACT Generating pre‐designed vectorial beams via on‐chip devices can yield many fascinating applications, but traditional diffraction‐based devices are bulky and inefficient. While plasmonic metasurfaces exhibit ultra‐compact sizes and deep‐subwavelength resolutions, their working efficiencies are limited by metallic losses.
Yu He +8 more
wiley +1 more source
Multi-lambda digital holography with auto calibration of temporal phase-shifts and synthetic wavelengths [PDF]
, 2009 Art. DWD6A fast auto calibration method for (lensless) multi-wavelength digital holography with arbitrary temporal phase-shifts is presented. The calibration algorithm is simple to calculate and needs just one additional image acquisition per ...
Fratz, M. +4 more
core +1 more source
Recent progress of atomic resolution holography: from point defects to defect complexes
Applied Physics ExpressAtomic-resolution holography, which uses X-rays or neutrons with wavelengths of about 1 Å, is a technique for visualizing three-dimensional local structures around specific elements, and its variations were demonstrated between 1990 and 2001 ...
Kouichi Hayashi +2 more
doaj +1 more source
Small, EarlyView.This study introduces an acoustics‐assisted tissue engineering approach, termed “Acoustic Tweezers‐Assisted Biomaterial Molding in Petri Dishes (TAMP),” which enables the fabrication of tissues with customizable extracellular matrix (ECM) geometries and various acoustically constructed internal cellular architectures, including parallel elongated ...
Yingshan Du +11 more
wiley +1 more source
APL PhotonicsHolographic display is considered the holy grail of photorealistic three-dimensional (3D) visualization technology because it can provide arbitrary wavefronts related to the essential visual cues of 3D images.
Shuo Sun +5 more
doaj +1 more source
Journal of High Energy PhysicsAbstract We show how to encode the radiative degrees of freedom in 4-dimensional asymptotically AdS spacetimes, using the boundary Cotton and stress tensors. Background radiation leads to a reduction of the asymptotic symmetry group, in contrast to asymptotically flat spacetimes, where a non-vanishing news tensor does not restrict ...
Luca Ciambelli +2 more
openaire +4 more sources
Hyperspectral tomographic diffractive microscopy: Development and applications
Journal of Microscopy, EarlyView.Abstract Tomographic Diffractive Microscopy (TDM) provides label‐free three‐dimensional imaging of transparent samples with resolution surpassing confocal limits. At IRIMAS, successive instrumental developments since 2009 have enhanced TDM capabilities through transmission, reflection, isotropic, polarisation‐sensitive, and dual‐view configurations ...
Leonardo Pestana Legori +4 more
wiley +1 more source
In operando imaging of the space‐charge region in a 4H‐SiC MOSCAP using STEM‐EBIC
Journal of Microscopy, EarlyView.Abstract In situ biasing electron microscopy is the necessary step forward in being able to characterise nanoscale devices and device interfaces. STEM‐EBIC is a new approach that can help fill the missing gaps in creating reproducible methodologies for in situ biasing TEM.
Eoin Moynihan +5 more
wiley +1 more source