Results 71 to 80 of about 101,447 (298)

Validating Forward Modeling and Inversions of Helioseismic Holography Measurements

, 2018
Here we use synthetic data to explore the performance of forward models and inverse methods for helioseismic holography. Specifically, this work presents the first comprehensive test of inverse modeling for flows using lateral-vantage (deep-focus ...
Birch, A. C., Braun, D. C., Crouch, A. D., DeGrave, K., Javornik, B.   +4 more
core   +1 more source

A Causal Entropy Bound [PDF]

, 1999
The identification of a causal-connection scale motivates us to propose a new covariant bound on entropy within a generic space-like region. This "causal entropy bound", scaling as the square root of EV, and thus lying around the geometric mean of ...
A. Buonanno, A. Ghosh, B. J. Carr, B. J. Carr, C. W. Misner, G. 't Hooft, G. Veneziano, G. Veneziano, I. D. Novikov, I. D. Novikov, J. D. Bekenstein, J. D. Bekenstein, J. D. Bekenstein, J. D. Bekenstein, J. Garriga, L. Susskind, N. Kaloper, N. Sasakura, R. Bousso, R. Bousso, R. Brustein, R. Brustein, R. Brustein, R. Brustein, R. Easther   +24 more
core   +2 more sources

Purcell‐Enhanced Spectrally Precise Emission in Dual‐Microcavity Organic Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
Spectrally precise emission from broadband organic light‐emitting diodes is realized via a dual‐microcavity strategy. This architecture achieves narrowband emission (full width at half maximum, FWHM = 21 nm) with ultrapure color approaching BT.2020 by enhancing the Purcell effect via coupling of excitons with dual‐microcavity resonance.
Jun Yong Kim, Sang Youn Lee, Kwan Hyun Cho, Yun Seon Do   +3 more
wiley   +1 more source

Resolution Enhancement of Geometric Phase Self-Interference Incoherent Digital Holography Using Synthetic Aperture

Photonics
Incoherent digital holography is a promising solution for acquiring three-dimensional information in the form of interference without a laser. Self-interference is the principal phenomenon of incoherent holography which splits the incident light wave ...
Youngrok Kim, KiHong Choi, Keehoon Hong, Sung-Wook Min   +3 more
doaj   +1 more source

Vectorial-Holography metasurface empowered by Orthogonality-Simplified Machine learning

Materials & Design, 2022
Metasurfaces can provide unprecedented degree of freedom in manipulating electromagnetic waves and have been introduced to holography. Aiming to explore the full capability for information presentation, vectorial metasurface holography is sprung up ...
Ruichao Zhu, Jiafu Wang, Chang Ding, Yongfeng Li, Zuntian Chu, Xiaofeng Wang, Tonghao Liu, Yajuan Han, Bo Feng, Shaobo Qu   +9 more
doaj   +1 more source

Differential Photoelectron Holography: A New Approach for Three-Dimensional Atomic Imaging

, 2003
We propose differential holography as a method to overcome the long-standing forward-scattering problem in photoelectron holography and related techniques for the three-dimensional imaging of atoms.
A. Szöke, B. P. Tonner, B. P. Tonner, C. M. Wei, C. S. Fadley, C. S. Fadley, D. Gabor, D. K. Saldin, D. K. Saldin, D.-A. Luh, E. Rotenberg, H. Wu, J. D. Denlinger, J. J. Barton, J. J. Barton, J. J. Barton, J. Wider, K. Reuter, L. J. Terminello, M. A. Van Hove, M. Tegze, P. Korecki, P. M. Len, P. M. Len, S. D. Kevan, S. G. Bompadre, S. Marchesini, S. Omori, S. Omori, S. Y. Tong, S. Y. Tong, T. Gog, T. Greber, Y. Chen, Y. Nihei   +34 more
core   +1 more source

Imaging velocities of a vibrating object by stroboscopic sideband holography [PDF]

, 2012
We propose here to combine sideband holography with stroboscopic illumination synchronized with the vibration of an object. By sweeping the optical frequency of the reference beam such a way the holographic detection is tuned on the successive sideband ...
Atlan, Michael, Gross, Michel, Joud, Fadwa, Verpillat, Frédéric   +3 more
core   +4 more sources

Electron–Matter Interactions During Electron Beam Nanopatterning

Advanced Functional Materials, EarlyView.
This article reviews the electron–matter interactions important to nanopatterning with electron beam lithography (EBL). Electron–matter interactions, including secondary electron generation routes, polymer radiolysis, and electron beam induced charging, are discussed.
Camila Faccini de Lima, Prathiba Thamizhavel, Taylor J. Woehl   +2 more
wiley   +1 more source

Vibration testing and analysis using holography [PDF]

, 1971
Time average holography is useful in recording steady state vibrational mode patterns. Phase relationships under steady state conditions are measured with real time holography and special phase shifting techniques.

core   +1 more source

Holographic analysis of diffraction structure factors

, 2002
We combine the theory of inside-source/inside-detector x-ray fluorescence holography and Kossel lines/x ray standing waves in kinematic approximation to directly obtain the phases of the diffraction structure factors.
B. Adams, B.W. Batterman, C. S. Fadley, D. K. Shuh, D. Sayre, I. A. Vartanyants, J. J. Bucher, J.A. Golovchenko, J.J. Bucher, J.M. Cowley, L. Fabris, M. A. Van Hove, M. J. Press, M. Kopecky, M. Kopecky, M. Tegze, M. Tegze, M. W. West, N. Mannella, P.M. Len, S. Marchesini, S. Marchesini, S. Marchesini, T. Gog, T. Gog, T. Hiort, W. C. Stolte, W. Shen, Z. Hussain   +28 more
core   +2 more sources