Search Results - "Momeen, M. Ummal"

Halogenation effects on the bridgehead position of the adamantane molecule by Aravindhan, R., Ummal Momeen, M, Hu, Jianping

“…[Display omitted] •Halogen substitution at the bridgehead position in adamantane molecule is studied.•Anisotropic charge distribution developed upon…”
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A geometry dependent directivity analysis of an optical structure based on NV center in diamond by Roy, Subhankar, Momeen, M Ummal

“…We present and investigate a highly directional diamond based optical nanostructure embedded with an elliptical solid immersion lens (e-SIL). An in depth…”
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Verifying institutionally developed hybrid 3D-printed coaxial cylindrical phantom for patient-specific quality assurance in stereotactic body radiation therapy of hepatocellular carcinoma by Krishnan, M. P. Arun, Momeen, M. Ummal

“…An accurate and reliable patient-specific quality assurance (PSQA) is crucial to ensure the safety and precision of Stereotactic body radiation therapy (SBRT)…”
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Enhanced photon extraction via cone structured waveguide from nitrogen vacancy center in diamond by Priyadarshini, V., Dharani, A., Roy, Subhankar, Hu, Jianping, Ummal Momeen, M.

“…We present a novel design of optical nanostructure for efficient light extraction from nitrogen vacancy (NV) center in diamond. Numerical simulations of the…”
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A technique for quantifying the sensitivity of dosimetric tool gamma with 2D detector array in pretreatment IMRT plans by segment deletion method by Krishnan, M. P. Arun, Bhagyalakshmi, A. T., Holla, Raghavendra, Puzakkal, Niyas, Ranjith, C. P., Vysakh, R., Irfad, M. P., Ramasubramanian, V., Hu, Jianping, Momeen, M. Ummal

“…Objectives Motivation of this study is to check the sensitivity of dosimetric tool gamma with 2D detector array combination when unexpected errors occur while…”
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Novel e-SIL with embedded cone structure for the enhancement of photon collection efficiency from nitrogen–vacancy center in diamond by Roy, Subhankar, Hu, Jianping, Ummal Momeen, M.

“…We present the design and theoretical simulation of a nano-range optical structure with an elliptical solid immersion lens (e-SIL) in a rectangular diamond…”
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Role of the solvent polarity on the optical and electronic characteristics of 1-iodoadamantane by Hu, Jianping, Momeen, M. Ummal

“…The natural absorbance caused by the chromophore and chemical behavior of 1-iodoadamantane is highly influenced by the polarity of different solvent…”
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Solvatochromic shifts and solvent effects on the electronic and transport behaviour of 1-Chloro Adamantane by R, Aravindhan, Momeen, M Ummal, Hu, Jianping

“…Solvent influence on the photophysical and electronic properties of 1-Chloro Adamantane (CAD) are investigated using experimental and computational methods…”
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Low loss optical structure for directional and efficient photon emission using nitrogen-vacancy center in diamond by Roy, Subhankar, Ummal Momeen, M.

“…Nitrogen-vacancy center in diamond based photonic structures are appealing in the field of quantum technology as they offer single photon emission with an…”
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Effect of fluorination on bandgap, first and second order hyperpolarizabilities in lithium substituted adamantane: A time dependent density functional theory by Begam Elavarasi, S., Deepa Mariam, Ummal Momeen, M., Hu, Jianping, Guin, Mridula

“…[Display omitted] •Fluorination leads interesting variations in the first and second order optical responses in Lithium substituted Adamantane.•The fluorinated…”
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High-dynamic-range magnetometry with a single electronic spin in diamond by Nusran, N. M., Momeen, M. Ummal, Dutt, M. V. Gurudev

“…Magnetic sensors capable of detecting nanoscale volumes of spins allow for non-invasive, element-specific probing 1 , 2 , 3 . The error in such measurements is…”
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Impact of Reference Selection on Gamma Analysis in Patient-Specific Quality Assurance for Monte Carlo-Based Treatment Planning Systems by M P, Arun Krishnan, M, Ummal Momeen

“…Our study aimed to establish a standardized methodology for selecting "reference" and "evaluated" distributions in gamma analysis for Monte Carlo (MC) based…”
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Transient response of nonlinear magneto-optic rotation in a paraffin-coated Rb vapor cell by Momeen, M. Ummal, Rangarajan, G., Natarajan, Vasant

“…We study resonant nonlinear magneto-optic rotation (NMOR) in a paraffin-coated Rb vapor cell as the magnetic field is swept. At low sweep rates, the nonlinear…”
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