Results 11 to 20 of about 351,194 (295)

Monocular Real Time Full Resolution Depth Estimation Arrangement with a Tunable Lens

open access: yesApplied Sciences, 2022
This work introduces a real-time full-resolution depth estimation device, which allows integral displays to be fed with a real-time light-field. The core principle of the technique is a high-speed focal stack acquisition method combined with an efficient
Ricardo Oliva-García   +3 more
doaj   +1 more source

An X-ray polarimeter for hard X-ray optics [PDF]

open access: yes, 2006
Development of multi-layer optics makes feasible the use of X-ray telescope at energy up to 60-80 keV: in this paper we discuss the extension of photoelectric polarimeter based on Micro Pattern Gas Chamber to high energy X-rays.
Baldini, Luca   +27 more
core   +3 more sources

Loss-tolerant operations in parity-code linear optics quantum computing [PDF]

open access: yes, 2007
A heavy focus for optical quantum computing is the introduction of error-correction, and the minimisation of resource requirements. We detail a complete encoding and manipulation scheme designed for linear optics quantum computing, incorporating scalable
A. Gilchrist   +5 more
core   +2 more sources

In vivo volumetric imaging of calcium and glutamate activity at synapses with high spatiotemporal resolution

open access: yesNature Communications, 2021
Adaptive optics (AO) corrects sample aberrations and allows high spatial resolution at depth in vivo. Here the authors report an AO method for Bessel focus; they apply AO Bessel focus scanning fluorescence microscopy to volumetric imaging and measure ...
Wei Chen   +6 more
doaj   +1 more source

Adaptive optics at the WHT [PDF]

open access: yes, 2001
The WHT is unusually well-placed for exploitation of adaptive-optics (AO) technology. The site seeing is excellent (median 0.7 arcsec), dome seeing is negligible, and preliminary studies indicate that most of the atmospheric seeing originates in a well ...
Benn, C. R.
core   +3 more sources

Focusing Vacuum Fluctuations [PDF]

open access: yes, 2000
The focusing of the vacuum modes of a quantized field by a parabolic mirror is investigated. We use a geometric optics approximation to calculate the energy density and mean squared field averages for scalar and electromagnetic fields near the focus.
C.-H. Wu   +16 more
core   +4 more sources

Tin etching from metallic and oxidized scandium thin films

open access: yesAIP Advances, 2017
The role of oxide on Sn adhesion to Sc surfaces was studied with in-situ ellipsometry, X-ray photoelectron spectroscopy and secondary electron microscopy.
M. Pachecka   +3 more
doaj   +1 more source

Focus on Ultrafast Optics

open access: yesNew Journal of Physics, 2004
The establishment of ultrafast optics as an important research field followed the invention of the laser in the late 1950s. However although the generation of ultrashort optical pulses was observed not long after the laser was first invented, it is only in the last few years that ultracompact lasers have been devised which generate picosecond or sub ...
Markus Pessa, Ian H White
openaire   +1 more source

Through-focus scanning optical microscopy [PDF]

open access: yesSPIE Proceedings, 2011
Through-focus scanning optical microscopy (TSOM) is another 'scanning' based method that provides threedimensional information (i.e. the size, shape and location) about micro- and nanometer-scale structures. TSOM, based on a conventional optical microscope, achieves this by acquiring and analyzing a set of optical images collected at various focus ...
Ravikiran Attota   +2 more
openaire   +1 more source

Metal diffusion properties of ultra-thin high-k Sc2O3 films

open access: yesAIP Advances, 2017
The diffusion barrier properties of Sc2O3 against metal diffusion were studied. Tin and ruthenium were used as probe materials to study the barrier properties of Sc2O3 in thickness ranges that are of relevance for gate materials.
M. Pachecka   +3 more
doaj   +1 more source

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