Results 91 to 100 of about 99,918 (270)

Development of double nearfield acoustic holography method (Basic experimental results)

open access: yesNihon Kikai Gakkai ronbunshu, 2019
There are several types of sound localization methods. In middle frequency around 1kHz, these methods are effective to detect the sound source location.
Masao NAGAMATSU
doaj   +1 more source

Quantum error correction and holographic information from bilocal holography

open access: yesJournal of High Energy Physics, 2021
Bilocal holography is a constructive approach to the higher spin theory holographically dual to O(N ) vector models. In contrast to other approaches to bulk reconstruction, bilocal holography does not take input from the dual gravitational theory.
Robert de Mello Koch   +3 more
doaj   +1 more source

Direct Visualization of Surface Structure and Charge States of Ceria‐Supported Gold Catalysts Under Redox Conditions

open access: yesAdvanced Science, EarlyView.
In the characterization of supported metal catalysts, a crucial aim is to conduct nanoscale analysis of the surface structure and charge dynamics in reactive gases. This study uses high‐precision electron holography in gas environments to observe the charge states of Au nanoparticles (NPs) supported on CeO2 during redox cycles.
Ryotaro Aso   +8 more
wiley   +1 more source

Constructive holography

open access: yesJournal of High Energy Physics
Abstract We consider the collective field theory description of the singlet sector of a free and massless matrix field in d dimensions. The k-local collective fields are functions of (d − 1)k + 1 coordinates. We provide a map between the collective fields and fields in the dual gravitational theory defined on AdS d+1 ...
Robert de Mello Koch   +1 more
openaire   +3 more sources

Optimally tuned deposition of 3D interconnected ultrathin cobalt oxide nanoflakes on Ni-foam by electrodeposition technique for targeted supercapacitor application

open access: yesResults in Chemistry, 2022
In this work, the 3D interconnected cobalt oxide nanoflakes (CON) were grown successfully on nickel foam (NF) at ambient conditions by the electrodeposition method, further followed by calcination.
Teja M. Patil   +7 more
doaj  

Assessment of Trapping Phenomena in As‐Grown and Thermally‐Treated Si‐Doped κ‐Ga2O3 Layers via Optical Admittance Spectroscopy

open access: yesAdvanced Electronic Materials, EarlyView.
Steady‐state and transient photocapacity studies, conducted with light at various wavelengths in the UVC, UVB, and UVA ranges, enable the study of acceptor traps, such as gallium vacancies and their complexes with hydrogen. These investigations allow the determination of spatial profiles and the measurement of response times to light on and off ...
Payam Rajabi Kalvani   +12 more
wiley   +1 more source

Conifold holography [PDF]

open access: yesJournal of High Energy Physics, 2003
We examine the extension of the Klebanov-Witten gauge/gravity correspondence away from the low-energy conformal limit, to a duality involving the full, asymptotically Ricci-flat background describing three-branes on the conifold. After a discussion of the nature of this duality at the string theory level (prior to taking any limits), we concentrate on ...
Hugo Garcia-Compean   +3 more
openaire   +2 more sources

Feed particle size evaluation: conventional approach versus digital holography based image analysis

open access: yesItalian Journal of Animal Science, 2010
The aim of this study was to evaluate the application of image analysis approach based on digital holography in defining particle size in comparison with the sieve shaker method (sieving method) as reference method.
Vittorio Dell’Orto   +7 more
doaj   +1 more source

Inflation, holography, and the choice of vacuum in de Sitter space

open access: yes, 2002
A family of de Sitter vacua introduced in hep-th/0203198 as plausible initial conditions for inflation, are discussed from the point of view of de Sitter holography. The vacua are argued to be physically acceptable and the inflationary picture provides a
Danielsson, Ulf H.
core   +1 more source

Advancing Energy Materials by In Situ Atomic Scale Methods

open access: yesAdvanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
Progress in in situ atomic scale methods leads to an improved understanding of new and advanced energy materials, where a local understanding of complex, inhomogeneous systems or interfaces down to the atomic scale and quantum level is required. Topics from photovoltaics, dissipation losses, phase transitions, and chemical energy conversion are ...
Christian Jooss   +21 more
wiley   +1 more source

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