I did PhD in Photon Atom Interactions in X-Ray Region and their applications in elemental analysis. My research work focused on the understanding of X-rays scattering cross sections (coherent an Incoherent), chemical shift in K-shell, measurement of thickness of thin films/nano materials. The knowledge of scattering cross sections carry information about the molecular structure of the tissue and hence can be used to identify changes occurs in the tissues.
I am working in worldly famous EDXRF research group under the leadership of Dr. D. Mehta, Professor, Department of Physics, Panjab University, Chandigarh. Our research group developed technique to measure the thickness of thin film using EDXRF-setup and this reports published in reputed Journal; Vacuum [IF- 3.627]. We have also used EDXRF and WDXRF techniques to check the elemental concentration of uranium in fly-ash and coal samples of Thermal Power Plant and also for elemental analysis of the thin films and nano materials.
RESEARCH, TEACHING, or OTHER INTERESTS
Atomic and Molecular Physics, and Optics, Spectroscopy, Materials Science
49
Scopus Publications
339
Scholar Citations
10
Scholar h-index
10
Scholar i10-index
Scopus Publications
Four-port MIMO antenna loaded with FSS in FR2 band for wireless applications Sreenivas Naik, Arun Upmanyu, Manish Sharma, Ashish Pandey, Ankur Pandey Scientific Reports, 2026 This work reports a four-port MIMO antenna integrated with a novel wideband frequency-selective surface (FSS). The proposed MIMO antenna is fabricated on Rogers-dielectric with permittivity 2.20 and thickness of 0.254 mm with an overall area of 30 × 36 mm2. The radiating patch is achieved by merging three ring-hexagonal geometries, which are fed by an asymmetric tapered transmission line with a partial-rectangular ground printed on another surface with a pair of rectangular slots and an open-ended slot beneath the feedline. A novel de-coupling structure achieves isolation of more than 10.0 dB in MIMO configuration with a pair of radiating elements placed mirrored-adjacent sequence and the other pair placed oppositely. A novel 7 × 7 frequency-selective-surface of dimension 56 mm × 56 mm with an operating bandwidth of 10–43.30 GHz is also fabricated on the same substrate as an antenna and is placed 10.0 mm apart from the MIMO-antenna, which enhances the average peak-realized-gain by 8.0 dBi. The MIMO antenna achieves − 10.0 dB bandwidth of 3.45–7.25 GHz (Band-A) and 19.70–82.10 GHz (Band-B). The MIMO-FSS antenna achieves better diversity parameter with ECCM−FSS$$\:\le\:$$ 0.02 (Band-A), 0.01 (Band-B), DGM−FSS$$\:>$$ 9.998dB (Band-A), 9.996 dB (Band-B), TARCM−FSS$$\:\le\:$$ − 4.0 dB (Band-A), − 6.0 dB (Band-B), CCLM−FSS$$\:\le\:$$0.18 b/s/Hz (Band-A), 0.25 b/s/Hz (Band-B), MEGM−FSS$$\:\cong\:$$ − 3.0 dB (Band-A and Band-B), and MEG (porta-porta)$$\:\cong\:$$0.0 dB (Band-A and Band-B). The SARM−FSS values at 3.50 GHz, 5.90 GHz, 24.0 GHz, 28.0 GHz, 38.0 GHz, 39.0 GHz, 41.0 GHz, 43.0 GHz, 47.0 GHz and 60.0 GHz are below threshold value of 1.60 W/Kg at 1 g of the tissue. The bending analysis at 15°, 30°, and 45° of the MIMO-FSS antenna matches the − 10.0 dB bandwidth at 0-degree bending, suggesting application in flexible electronics. The antenna also maintains stable 2D radiation patterns in principal planes at a lower frequency of 3.50 GHz & 5.90 GHz, and is acceptable in the remaining higher frequency application bands. The MIMO proposed antenna loaded with FSS also records the enhancement of peak realized gain by 5.85 dBi in Band 2.
Study of solute-solvent interactions of 1-hexyl-3-methylimidazolium bromide [C6mim][Br] and protic solvents at different temperatures: A volumetric approach Anup Kumar, Arun Upmanyu, Monika Dhiman, S. C. Sharma, Kuljeet Singh, Archana Sirohi Journal of the Chinese Chemical Society, 2026 Volumetric properties offer direct and sensitive insight into the specific interactions between solute and solvents. In the current work, key volumetric parameters—partial molar volume (PMV), apparent molar volume, excesspmv, and PMV at infinite dilution—were computed for three binary mixtures of 1‐hexyl‐3‐methylimidazolium bromide ([C 6 mim][Br]) with protic solvents: water, ethylene glycol monomethyl ether (EGMME) and isopropyl alcohol (IPA) across a range of temperatures. The dependence of these properties on concentration and temperature was analyzed to assess the nature and strength of solute–solvent interactions in these mixtures. The effect of the hexyl chain of the methylimidazolium cation on the solute‐solvent interactions was also investigated. Additionally, the Flory statistical theory (FST) was employed to predict, and the Jouyban‐Acree model (JAM) was used to correlate the molar volume of the given mixtures. It was found that JAM is a suitable model to correlate the molar volume for the given mixtures in the given concentration and temperature range. FST yielded accurate predictions of molar volume for the [C 6 mim][Br] + EGMME and [C 6 mim][Br] + water systems across the entire range of composition and temperature, though its applicability to the [C 6 mim][Br] + IPA system was limited to mole fractions X 1 >0.1.
Investigations of Volumetric Properties and Estimation of the Molecular Radius of Poly(ethylene glycol) (PEG)-400 and Ionic Liquids/Alkyl Acrylates Mixtures Monika Dhiman, Anup Kumar, Arun Upmanyu, Devinder Pal Singh, Sumesh Chandra Sharma, Kailash Chandra Juglan, Prashant Kumar Gangwar ACS Omega, 2025 High Resolution Image Download MS PowerPoint Slide In the present work, volumetric properties, namely, partial molar volume, excess partial molar volume, partial molar volume at infinite dilution, and apparent molar volume, are determined for six binary mixtures of poly(ethylene glycol) (PEG)-400 including three PEG-400 + ionic liquids (ILs), namely, [C 4 mim] [Br], [C 6 mim] [Br], and [C 8 mim] [Br], and three PEG-400 + alkyl acrylates, namely, methyl acrylate (MA), ethyl acrylate (EA), and n -butyl acrylate (n-BA), at different concentrations and temperatures. These properties are further utilized to analyze the nature and strength of the solute–solvent interactions prevalent in these mixtures. Primarily, solute–solvent interactions mainly involve hydrogen bonding, ion–dipole interactions, and van der Waals forces in the case of PEG-400 and ILs systems. It has been observed that the strength of the solute–solvent (A–B) interaction between PEG-400 and ILs gradually increases with an increase in the concentration of PEG-400. An increase in the alkyl chain has a noticeable effect on these interactions. The limited change in V̅ 1 values across PEG-400 + MA, EA, and n-BA mixtures suggests that the interactions are mostly governed by nonspecific van der Waals and weak dipole–dipole forces. The molecular radius, which is an important property of liquids, has also been computed for these mixtures using six predictive methods: Schaaff’s, Rao, Kittle, Eyring, CPFCC, and the refractive index method. Out of these, the Schaaff and Rao methods are found to be most suitable to determine the molecular radius.
Synthesis and Molecular Interaction Study of Polymer-NiFe2O4 Nanofluids at Different Temperatures by Using Ultrasonic Waves of 2 and 5 MHz for Medical Applications Bashar Badamasi Lailaba, Krishna Kumar Pandey, Arun Upmanyu Macromolecular Symposia, 2025 In this study, the sol–gel synthesis technique was used to create the pure nickel ferrite (NiFe2O4) nanoparticles. Citric acid is utilized as a stabilizing agent to aid in the creation of nanoparticles and control the size and morphology of the nanoparticles. Nickel sulfate hexahydrate (Ni(SO4)⋅6H2O) and iron nitrate nonahydrate (Fe2 (NO3)3⋅9H2O) are used as precursors. To improve the size and band gap of the resulting nanoparticle sample, ultraviolet (UV) characterization is performed. To create the homogenous solution known as PEG‐NiFe2O4 nanofluids of 2% concentration and 0.6 g of nanoparticle powder were disseminated into 30 mL of polyethylene glycol (PEG) polymer and agitated for at least 4 h at 70°C. To evaluate the ultrasonic velocity, density, and viscosity at various temperatures (303–333 K), the acquired sample was poured into the ultrasonic interferometer cylinder of ultrasonic wave frequencies 2 and 5 MHz in addition, utilizing practical parameters like ultrasonic velocity, density, and viscosity, the associated ultrasonic parameters like adiabatic compressibility, acoustic impedance, and ultrasonic attenuation were calculated. The obtained results have been discussed in detail.
Comparative Physicochemical Characterization of Potassium Iodide and Potassium Permanganate Mixed With DD Water for Their Medical and Industrial Applications at Various Temperatures Innocent Mzondi Moyo, Krishna Kumar Pandey, Arun Upmanyu Macromolecular Symposia, 2025 The goal of this study is to present a thorough comparison of the physicochemical characteristics of potassium permanganate (KMnO4) and potassium iodide (KI) in deionized water (DD water) at various temperatures. The study highlights how temperature affects the characteristics of these solutions and investigates their possible uses in industrial and medicinal settings. Evaluation of the KI and KMnO4 solutions’ density, viscosity, and solubility in deionized water is among the factors that go into their physicochemical characterization. Measurements are carried out at different temperatures to capture the temperature‐dependent behavior of these mixes and get insight into their application under various environmental situations. Within the medical field, studies look into how well these solutions work for certain uses, such as wound care, antifungal therapies, etc. Their potential in medication delivery systems and pharmaceutical formulations is also investigated. The study examines these solutions’ industrial uses in analytical chemistry, chemical production, and water treatment. The findings of this study further our knowledge of the kinetics and thermodynamics of KI and KMnO4 solutions in deionized water. Comparative assessments help to choose appropriate applications in the industrial and medical arenas by illuminating the distinctive characteristics of each solution. Ultrasonic velocity will be measured in KI and KMnO4 mixed with DD water by using an ultrasonic interferometer, and all the other acoustical parameters will also be evaluated. The obtained results will be discussed in detail.
Frequency dependence studies of acoustical and thermo-dynamical parameters of the binary mixtures of isopropyl sulphide and acetic acid Romanian Journal of Acoustics and Vibration, 2020
Exegesis of molecular interactions of mixes comprising Polyethylene glycol-4000 and Polyhydroxy acids (PHAs) with spectroscopic analysis K Bhakri, N Chakraborty, KC Juglan, A Upmanyu Journal of the Indian Chemical Society, 102616 , 2026 2026
Four-port MIMO antenna loaded with FSS in FR2 band for wireless applications S Naik, A Upmanyu, M Sharma, A Pandey, A Pandey Scientific Reports , 2026 2026 Citations: 1
Study of solute‐solvent interactions of 1‐hexyl‐3‐methylimidazolium bromide [C 6 mim][Br] and protic solvents at different temperatures: A volumetric approach A Kumar, A Upmanyu, M Dhiman, SC Sharma, K Singh, A Sirohi Journal of the Chinese Chemical Society 73 (2), 302-316 , 2026 2026
Study of the Catalytic Behavior of Polyethylene Glycol (PEG)-400 Mixtures at Equimolar Concentrations in the Temperature Range 288.15 K to 333.15 K A Rana, A Upmanyu, M Dhiman, K Singh, KC Juglan Topics in Catalysis, 1-10 , 2025 2025 Citations: 2
Investigations of Volumetric Properties and Estimation of the Molecular Radius of Poly (ethylene glycol)(PEG)-400 and Ionic Liquids/Alkyl Acrylates Mixtures M Dhiman, A Kumar, A Upmanyu, DP Singh, SC Sharma, KC Juglan, ... ACS omega 10 (48), 58205-58216 , 2025 2025 Citations: 3
Probing the volumetric, acoustic, and spectroscopic properties of l-ascorbic acid and sodium l-ascorbyl-2-phosphate in aqueous Bronopol solutions S Devi, N Chakraborty, KC Juglan, A Upmanyu Journal of Molecular Liquids, 128837 , 2025 2025 Citations: 4
Recent Developments in WDXRF and EDXRF: Instrumentation, Analytical Performance, and Emerging Applications A Upmanyu X-Ray Fluorescence Spectroscopy and Chemometrics: Instrumentations … , 2025 2025
Estimation of Radiation Dose Parameters of High-resolution Computed Tomography Chest Examination for COVID-19 Patients: A Retrospective Study MC Bhatt, A Upmanyu, SC Bansal, A Dogra Coronaviruses 6 (3), E180424229066 , 2025 2025
Synthesis and Molecular Interaction Study of Polymer‐NiFe 2 O 4 Nanofluids at Different Temperatures by Using Ultrasonic Waves of 2 and 5 MHz for Medical … BB Lailaba, KK Pandey, A Upmanyu Macromolecular Symposia 414 (4), e70086 , 2025 2025
Comparative Physicochemical Characterization of Potassium Iodide and Potassium Permanganate Mixed With DD Water for Their Medical and Industrial Applications at Various … IM Moyo, KK Pandey, A Upmanyu Macromolecular Symposia 414 (4), e70087 , 2025 2025
A multifaceted analysis of physicochemical properties and molecular interactions in DES mixtures A Upmanyu, M Dhiman, R Dey, DP Singh, KC Juglan Journal of Molecular Liquids, 128142 , 2025 2025 Citations: 5
Temperature dependence study of molecular interactions and quasi-crystalline behaviour of hydroxyl terminated polybutadiene in chlorobenzene M Dhiman, Harsha, A Upmanyu, DP Singh, KC Juglan AIP Conference Proceedings 3185 (1), 020066 , 2025 2025 Citations: 1
Study of thermodynamic and acoustic properties of DEGMME/DEGMEE in aqueous erythritol solutions at different temperatures H Kaur, N Chakraborty, KC Juglan, A Upmanyu The Journal of Chemical Thermodynamics 204, 107446 , 2025 2025 Citations: 1
Design and experimental analysis of asymmetric fed key-shaped eight-port flexible frequency diversity MIMO antenna with multi-band applications S Naik, A Upmanyu, M Sharma Optical and Quantum Electronics 57 (1), 98 , 2025 2025 Citations: 6
Study of solute-solvent interactions of 1-hexyl- 3-methylimidazolium bromide [C6mim][Br] and protic solvents at different temperatures: A volumetric approach AS Anup Kumar, Arun Upmanyu,Monika Dhiman,S. C. Sharma, Kuljeet Singh JCCS , 2025 2025
Physicochemical and catalytic behavior of binary mixtures of n-alkyl imidazolium bromide ionic liquids with poly (ethylene glycol)-400: Application of flory statistical theory A Kumar, A Upmanyu, M Dhiman, SC Sharma, KK Pandey, KC Juglan Chemical Physics Impact 9, 100747 , 2024 2024 Citations: 4
Ultrasonic and spectroscopic investigations of molecular interactions in binary mixture of PEG-400 and DMSO at different temperatures M Dhiman, A Upmanyu, DP Singh, KC Juglan Journal of the Serbian Chemical Society 89 (10), 1363-1385 , 2024 2024 Citations: 7
Prediction of refractive index of 1-butyl-1-methylpyrrolidinium dicyanamide and water ionic liquid mixture: An application of machine learning A Sirohi, A Upmanyu, P Kumar, H Singh, R Goyal, KK Pandey AIP Conference Proceedings 3209 (1), 070007 , 2024 2024 Citations: 2
Temperature dependence investigations of molecular interactions and excess thermodynamic parameters of binary mixtures of ionic liquids and water using Flory's statistical theory A Sirohi, A Upmanyu, M Dhiman, P Kumar, DP Singh Vietnam Journal of Chemistry 62 (4), 453-479 , 2024 2024 Citations: 9
A Review of Multi-Band Flexible MIMO Antenna Design on Thin Substrate for High Diversity Performance S Naik, A Upmanyu, M Sharma 2024 International Conference on Electronics, Computing, Communication and … , 2024 2024 Citations: 2
MOST CITED SCHOLAR PUBLICATIONS
Assessment of Phytoremediation Potential of Chara vulgaris to Treat Toxic Pollutants of Textile Effluent P Mahajan, J Kaushal, A Upmanyu, J Bhatti Journal of toxicology 2019 (1), 8351272 , 2019 2019 Citations: 71
Ultrasonic studies of molecular interactions in polymer solution of the Polyisobutylene (PIB) and Benzene A Upmanyu, DP Singh Acta Acustica united with Acustica 100 (3), 434-439 , 2014 2014 Citations: 31
Ultrasonic study of molecular interactions in polymeric solution of polypropylene glycol-400 and ethanol at 303 K M Dhiman, K Singh, J Kaushal, A Upmanyu, DP Singh Acta Acust 105, 743-752 , 2019 2019 Citations: 27
Thermodynamic and physicochemical characteristics of 2-butoxyethanol/2-phenoxyethanol in aqueous maltitol solutions H Kaur, N Chakraborty, KC Juglan, A Upmanyu Journal of Molecular Liquids 392, 123403 , 2023 2023 Citations: 21
Thermo-viscous investigations of molecular interactions for the binary mixtures of polyethylene glycol-400 and polyethylene glycol-600 with dimethyl sulfoxide and water at … A Upmanyu, M Dhiman, DP Singh, H Kumar Journal of Molecular Liquids 334, 115939 , 2021 2021 Citations: 20
Prediction of refractive indices and molecular radii of binary mixtures of Polyethylene glycol (PEG-200,400) and cyclic ethers: Insight into molecular interactions M Dhiman, A Upmanyu, P Kumar, DP Singh Karbala International Journal of Modern Science 8 (4), 703-717 , 2022 2022 Citations: 11
Thermo-acoustical studies of zinc oxide nano particles dispersed nematic liquid crystals mixtures in the temperatures range 283.15 K318. 15K P Malik, S Kumar, Khushboo, A Upmanyu, P Kumar, P Malik Liquid Crystals 49 (12), 1604-1611 , 2022 2022 Citations: 10
Thickness measurement of low-Z films fabricated on thick substrate using EDXRF technique AK Upmanyu, A Kapil, D Mehta, S Kumar Vacuum 183, 109852 , 2021 2021 Citations: 10
Contribution of flyash from coal-fired thermal power plants to uranium contamination of ground water G Singh, G Singh, N Rani, A Bhalla, A Upmanyu, S Kumar, D Mehta Journal of radioanalytical and nuclear chemistry 318 (2), 857-863 , 2018 2018 Citations: 10
Chemical state analysis of Cl Kα and Kβ1, 3 X-ray emission lines using polychromatic WDXRF spectrometer HS Kainth, A Upmanyu, H Sharma, T Singh, S Kumar Nuclear Instruments and Methods in Physics Research Section B: Beam … , 2018 2018 Citations: 10
Temperature dependence investigations of molecular interactions and excess thermodynamic parameters of binary mixtures of ionic liquids and water using Flory's statistical theory A Sirohi, A Upmanyu, M Dhiman, P Kumar, DP Singh Vietnam Journal of Chemistry 62 (4), 453-479 , 2024 2024 Citations: 9
Alignment of L 3 subshell vacancy states created without Coster–Kronig decay through the selective photoionization in 82 Pb, 90 Th and 92 U and effect of … G Singh, G Singh, A Upmanyu, HS Kainth, S Kumar, D Mehta The European Physical Journal D 71 (10), 248 , 2017 2017 Citations: 9
Ultrasonic and spectroscopic investigations of molecular interactions in binary mixture of PEG-400 and DMSO at different temperatures M Dhiman, A Upmanyu, DP Singh, KC Juglan Journal of the Serbian Chemical Society 89 (10), 1363-1385 , 2024 2024 Citations: 7
Estimation of Ultrasonic Velocity, Density, Internal Pressure, and Thermophysical Parameters of Ionic Liquid Mixtures: Application of Flory’s Statistical Theory A Sirohi, A Upmanyu, P Kumar, M Dhiman, KC Juglan, DP Singh, ... ACS omega 9 (17), 19363-19377 , 2024 2024 Citations: 7
Design and experimental analysis of asymmetric fed key-shaped eight-port flexible frequency diversity MIMO antenna with multi-band applications S Naik, A Upmanyu, M Sharma Optical and Quantum Electronics 57 (1), 98 , 2025 2025 Citations: 6
Measurement of uranium in phosphate fertilizers for groundwater contamination employing X-ray and γ-ray spectroscopic techniques G Singh, HS Kainth, G Singh, N Rani, H Duggal, A Upmanyu, A Bhalla, ... Journal of Radioanalytical and Nuclear Chemistry 331 (4), 1715-1722 , 2022 2022 Citations: 6
A multifaceted analysis of physicochemical properties and molecular interactions in DES mixtures A Upmanyu, M Dhiman, R Dey, DP Singh, KC Juglan Journal of Molecular Liquids, 128142 , 2025 2025 Citations: 5
Quasi-Crystalline behavior of imidazolium based pure ionic liquids over the extended pressure range A Sirohi, A Dogra, DP Singh, A Upmanyu Electrochemical Society Transactions 107 (1), 8583-8591 , 2022 2022 Citations: 5
Assessment of phytoremediation potential of Chara vulgaris to treat toxic pollutants of textile effluent. J toxicol 2019: 1–11 P Mahajan, J Kaushal, A Upmanyu, J Bhatti 2019 Citations: 5
Measurement of large angle Rayleigh scattering cross sections for 39.5, 40.1 and 45.4 keV photons in elements with 26≤ Z≤ 83 A Upmanyu, G Singh, H Duggal, HS Kainth, A Bhalla, S Kumar Applied Radiation and Isotopes 128, 125-131 , 2017 2017 Citations: 5