Results 131 to 140 of about 1,782,899 (173)

Single-frame two-color illumination computational imaging based on Kramers–Kronig relations

Applied Physics Letters, 2023
Annular-illumination quantitative phase imaging based on Kramers–Kronig relations (AIKK) achieves a large space-bandwidth-time product. The reconstruction algorithm is non-iteration, parameter-free, and object-independent constitutionally.
Yu-Tong Li, Guancheng Huang, Shuo Ma, Yiran Wang, Shu-Tian Liu, Zhengjun Liu   +5 more
semanticscholar   +1 more source

Kramers–Kronig relations for nonlinear rheology. Part I: General expression and implications

Journal of rheology, 2022
The principle of causality leads to linear Kramers–Kronig relations (KKR) that relate the real and imaginary parts of the complex modulus [Formula: see text] through integral transforms.
Sachin Shanbhag, Y. M. Joshi
semanticscholar   +1 more source

Single-shot resolution-enhancement quantitative phase imaging based on Kramers-Kronig relations.

Optics Letters, 2023
A single-shot quantitative phase imaging (QPI) method with improved resolution based on Kramers-Kronig relations is proposed. Two pairs of in-line holograms containing the high-frequency information in the x and y directions are recorded by a ...
Xiang Chen, Sihong Yao, Xuan Yan, H. Ding, Jun Ma, Cao-Jin Yuan   +5 more
semanticscholar   +1 more source

Spectrum sampling optimization for quantitative phase imaging based on Kramers-Kronig relations.

Optics Letters, 2022
Annular-illumination quantitative phase imaging based on space-domain Kramers-Kronig relations (AIKK) is a newly developed technique that is object-independent and non-iterative reconstructed inherently.
Yu-Tong Li, Xiu Wen, Ming-Jau Sun, Xuyang Zhou, Yu Ji, Guancheng Huang, Keya Zhou, Shu-Tian Liu, Zhengjun Liu   +8 more
semanticscholar   +1 more source

The detailed calculations of optical properties of indium-doped CdO nanostructured films using Kramers-Kronig relations

, 2021
The different ratios of Indium-doped cadmium oxide thin films were deposited on a glass substrate by a sol-gel assisted spin coating technique. The structure of the films was analyzed using XRD and depicts the amorphous nature of the doped films. All the
V. Ganesh, L. Haritha, H. Ali, A. Aboraia, Y. Khairy, H. H. Hegazy, V. Butova, A. Soldatov, H. Algarni, H. Zahran, I. Yahia   +10 more
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Generalization of Kramers-Krönig relations for evaluation of causality in power-law media

Communications in nonlinear science & numerical simulation, 2021
Classical Kramers-Kronig (K–K) relations connect real and imaginary parts of the frequency-domain response of a system. The K–K relations also hold between the logarithm of modulus and the argument of the response, e.g.
J. Gulgowski, T. Stefański
semanticscholar   +1 more source

High‐Efficiency Label‐Free 3D Microscopy Using Kramers‐Kronig Relations‐Assisted Fourier Ptychographic Diffraction Tomography

Laser & Photonics Reviews
A high‐efficiency 3D refractive index (RI) tomography method is presented, termed Kramers–Kronig relations‐assisted Fourier ptychographic diffraction tomography (KK‐FPDT).
Zhi-Dong Bai, Shun Zhou, Lin-Peng Lu, Habib Ullah, Ran Ye, Qian Chen, Chao Zuo   +6 more
semanticscholar   +1 more source

Enhancing Dielectric Characterization of Clothing Materials: An Extended Jonscher Model Supported by the Kramers–Kronig Relations

IEEE Transactions on Antennas and Propagation
This study introduces a novel algorithm for precisely characterizing dielectric properties in clothing materials, which is crucial for wireless body area networks (WBANs) and 5G technology.
Kwok L. Chung, Xiaotian Liu, Shi-Quan Wang, Bo-Tao Feng, Li Deng   +4 more
semanticscholar   +1 more source

Closed Form Kramers–Kronig Relations With Shape Preserving Piecewise Cubic Interpolation

IEEE transactions on microwave theory and techniques, 2021
The derivation of the Kramers–Kronig relations is revisited based on system theory considerations to show their general validity and to emphasize how these relations are connected to the causality of a linear system.
Zsolt Szabó
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Full-angle single-shot quantitative phase imaging based on Kramers-Kronig relations.

Optics Letters
As a non-interference and non-iterative method, annular-illumination quantitative phase imaging based on Kramers-Kronig relations (AIKK) can realize phase measurement with full-angle resolution enhancement under multiple exposures. In order to completely
Xiang Chen, Sihong Yao, Ju-Nan Song, Tianwei Ding, Guoqing Li, Jia-Wei Song, Shouping Nie, Jun Ma, Cao-Jin Yuan   +8 more
semanticscholar   +1 more source