Publications by authors named "RA Jishi"
Efficient algorithm to calculate the optical properties of breast tumors by high-order perturbation theory.
J Opt Soc Am A Opt Image Sci Vis
October 2023
Article Synopsis
- An efficient algorithm has been developed to solve -th order terms in perturbation expansions for light behavior in human tissue without using approximations.
- This allows for rapid and accurate estimations in medical imaging techniques like mammography and optical tomography, even with perturbation orders of 30 or more.
- The study also evaluates the effectiveness of this approach based on tumor size and tissue optical properties, showing strong compatibility with established methods and successful application in experiments involving breast-like tissue models.
Prediction of antiferromagnetism in barium chromium phosphide confirmed after synthesis.
J Phys Condens Matter
January 2020
We have carried out density-functional theory (DFT) calculations for the chromium pnictide BaCrP, which is structurally analogous to BaFeAs, a parent compound for iron-pnictide superconductors. Evolutionary methods combined with DFT predict that the chromium analog has the same crystal structure as the latter. DFT also predicts Néel antiferromagnetic order on the chromium sites.
View Article and Find Full Text PDFWe report the results of density functional theory (DFT) studies on the formation of the complex H1--Cu2+-H1- consisting of two deprotonated hydroxypyridone ligands (H1-) and a Cu2+ ion. We compare the total energies of three possible structures with different symmetries and show that the structure with plane reflection symmetry has the lowest energy. The electronic structure of the periodic extended DNA-like double helix consisting of stacked H1--Cu2+-H1- units is then calculated within the density functional method, and the double helix is found to be an insulating ferromagnet.
View Article and Find Full Text PDFElectron-phonon coupling and the electrical conductivity of fullerene nanotubules.
Phys Rev B Condens Matter
October 1993
Mode softening and mode stiffening in C60 doped with alkali metals.
Phys Rev B Condens Matter
March 1992
Electron-phonon coupling strength and implications for superconductivity in alkali-metal-doped fullerenes.
Phys Rev B Condens Matter
February 1992
Theory of the upper critical field in graphite intercalation compounds.
Phys Rev B Condens Matter
November 1991
Erratum: Electron-phonon interactions and charge-density-wave formations in strong magnetic fields.
Phys Rev B Condens Matter
December 1986
Erratum: Electron-phonon interactions and charge-density-wave formations in strong magnetic fields.
Phys Rev B Condens Matter
September 1986
Electron-phonon interactions and charge-density-wave formations in strong magnetic fields.
Phys Rev B Condens Matter
April 1986