Results 241 to 250 of about 4,497,800 (307)

Automated cardiac strain estimation from short-axis DENSE and Cine MR images. [PDF]

Biomech Model Mechanobiol
Naqizadeh Jahromi M, Menna Costa R, Delavald Marques A, Wellner L, Hannum AJ, Liu ZQ, Wu D, Ennis DB, Perotti LE.   +8 more
europepmc   +1 more source

VCFedAdam: A Verifiable and Compressed FedAdam Aggregation Scheme for Federated Learning in Distributed Sensor Networks. [PDF]

Sensors (Basel)
Si Z, Liao X, Wu Z, Li T, Su C.
europepmc   +1 more source

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Characterization of Phase Defects in Phase Shift Masks

Journal of Vacuum Science & Technology B, 2000
Rigorous simulation of electromagnetic scattering and imaging are used to assess the tendency of nonplanar phase defects to print in optical lithography with alternating phase-shifting masks. The ideal model for phase defects, which assumes that the fields are transmitted with unaltered amplitude and a phase shift of 180°, is proven inaccurate through ...
Andrew R Neureuther
exaly   +2 more sources

Interferometric characterization of phase masks

Applied Optics, 2003
We demonstrate a novel interferometric technique for highly accurate characterization of phase masks used in optical fiber grating fabrication. The principle of the measurement scheme is based on the analysis of the interference pattern formed between the first- and zero-order beams transmitted through or reflected from the grating under test.
Mikhail, Sumetsky, Yury, Dulashko, Tom P, White, Tim, Olsen, Paul S, Westbrook, Benjamin J, Eggleton   +5 more
openaire   +2 more sources

Photorefractive phase mask

SPIE Proceedings, 2001
We propose and demonstrate a new method to fabricate volume phase mask in LiNbO 3 :Fe crystal by photorefractive effect, for the first time to our knowledge. First, we image an amplitude mask with corresponding intensity distribution at the incident face of a photorefractive LiNbO 3 :Fe crystal.
Haidong Wen, Simin Liu, Xinzheng Zhang, Ru Guo, Guoquan Zhang, Qian Sun, Jingjun Xu, Guangyin Zhang   +7 more
openaire   +1 more source

Random Phase Data Masks: Fabrication Tolerances and Advantages of Four Phase Level Masks

Applied Optics, 1972
An analysis is presented of the intensity variations in the Fourier transform plane resulting from the use of a bilevel random phase mask for holographic data recording as suggested by Burckhardt. To maintain a fixed ratio of peak intensities between in-phase amplitude components and out-of-phase components for an imperfect phase mask, the permissible ...
W C, Stewart, A H, Firester, E C, Fox
openaire   +2 more sources