Modification of hydrophobic electrospun polyurethane fibers for efficient wound healing activityRather, Anjum H; Khan, Rumysa S; Rafiq, Muheeb; Wani, Taha U; Sheikh, Faheem A
doi: 10.1088/1742-6596/2663/1/012021pmid: N/A
The intricate process of wound healing demands an atmosphere that is conducive to quick healing. In this situation, creating biocompatible and antibacterial fibers may be a good choice. In this study, the unmodified polyurethane and polyurethane modified with cellulose acetate and rosemary oil were electrospun into fibers. These fibers were subsequently adsorbed using silver nanoparticles. The FE-SEM was used to characterize the fibers, revealing their defect-free morphology and the presence of nanoparticles on them. Additionally, the XRD findings demonstrated that silver nanoparticles were successfully incorporated into the spun fiber mats. The contact angle measurements indicated a decreasing behavior starting from 100.4±1° to 28.4±3° in the case of unmodified polyurethane and modified fibers. The antibacterial assay revealed that although unmodified fiber mats have negligible antibacterial action, the modified fibers exhibited considerable antibacterial activity against E. coli and S. aureus. In-vitro studies revealed that Human embryonic kidney 293T (HEK 293T) cell proliferation was enhanced on the surface of modified fibers compared to unmodified fibers. In conclusion, our research presents unique multifunctional fibrous scaffolds that are appropriate and optimal for wound healing applications.
Cosmological models with variable parametersJain, Navya; Dua, Heena; Mishra, R K
doi: 10.1088/1742-6596/2663/1/012056pmid: N/A
The present study deals with the investigation of the Friedmann-Lemaitre-Robertson-Walker models (often FLRW-models) with time varying G and ∧ in the framework of General theory of Relativity. The Einstein field equations have been solved by considering the time-varying deceleration parameter q(t) and Scale factor α(t)=eβt+(sinhβt)1m, where m and β are arbitrary constants. We have analysed the value of m, which will generate a transition for universe from early decelerating phase to recent acceleration phase. The physical and graphic behaviour have also been planned to study in this communication.
Synthesis, structure, and photoluminescence analysis of thermally stable Sm3+ doped YPO4 phosphorKumar, Ishant; Kumar, Avinash; Kumar, Sandeep; Thakur, Himani; Gathania, Arvind K.
doi: 10.1088/1742-6596/2663/1/012002pmid: N/A
In this manuscript, we used the coprecipitation method to manufacture Sm3+ doped YPO4. To verify the phase and structural properties of the synthesized material, we performed XRD. The diffraction patterns of the synthesized sample match the tetragonal YPO4 with no indication of an impurity peak, demonstrating the creation of a pure phase. The photoluminescence excitation and emission profiles of the synthesized material were recorded. Characteristic excitation and emission peaks of Sm3+ were observed. The distinctive orange-reddish emission of Sm3+ is found at the highest intense excitation peak (404 nm). The CIE spectral coordinates of the phosphor are (0.6080,0.3912). The emission spectra are recorded under various excitation levels. The temperature-dependent emission under 404 nm excitation is also observed to confirm the thermal stability of the synthesized material. The emission intensity drops just 13% up to 150 °C, indicating the material’s remarkable thermal stability. These findings indicate that the synthesized material is suitable for application in display devices.
Prefacedoi: 10.1088/1742-6596/2663/1/011001pmid: N/A
It is a matter of great pleasure for the organizers to bring out the Conference proceedings of the 6th National Conference on Advanced Materials and Radiation Physics (AMRP-2023) in Journal of Physics: Conference Series. The 6th National Conference on Advanced Materials and Radiation Physics (AMRP-2023) was held during May 18-19, 2023 through HYBRID Mode at Sant Longowal Institute of Engineering and Technology, Longowal, Punjab (INDIA). The AMRP-2023 conference is an important event that brings academics and researchers from all over India to share their professional experiences, expand their professional knowledge and receive updates on the latest advances in the field of advanced materials and radiation Physics.Materials science is an interdisciplinary field which deals with the discovery and design of new materials involving the study of materials through the materials paradigm (synthesis, structure, properties and performance). The subject covers a broad spectrum of materials science research including functional materials, synthesis and processing, theoretical analyses, characterization and properties of materials. Emphasis is also placed on the interdisciplinary nature of materials science and issues at the forefront of the field, such as energy and environmental issues, as well as medical and bioengineering applications are also discussed.The Radiation Physics is highly multidisciplinary in nature and is now the backbone of the nuclear medical diagnostics. The radiation physics research covers many areas of radiation imaging techniques, fundamental studies of semiconductor radiation detectors, detector materials, radiation interaction with matter and medical physics which aims to improve knowledge and methods in the field of radiation physics and radiation dosimetry, in order to develop new radiation measurement instruments and methods for applications in research, industry and medicine.In this conference more than 150 researchers from reputed universities/institutes have shown interest in hybrid mode participation. The conference included one key note address, four plenary talks, six invited talks, and presentation of more than 130 contributed papers via online & offline mode on different aspects of the conference theme. We extend our sincere gratitude to all the authors who submitted their papers to the AMRP conference. We also like to express our great appreciation to the Keynote, plenary and invited speakers.We are thankful to Institute administration for extending all support and motivation to organize this conference. On behalf of the Conference Organizing Committee, we would like to thank the referees for their efficient and thoughtful actions. We are grateful to the members of the Organising Committee for their efforts in making and shaping the program for AMRP 2023. Particularly, we acknowledge the publishing support from the members of Journal of Physics: Conference Series. We hope that the future AMRP will be as successful and stimulating, as indicated with the contributions presented in this volume.Organising Committee AMRP-2023List of Organising Committee is available in this Pdf.
Using SRIM code for calculating Bragg curve, projected range, straggling of 12C ion in biological materialsKane, S. N.; Verma, R.
doi: 10.1088/1742-6596/2663/1/012057pmid: N/A
‘The Stopping and Range of Ions in Matter’ SRIM program, utilizing the built-in compound directory has been used to compute Bragg curve, projected range, longitudinal, lateral straggle of 12C ion with energies of 1 − 150 MeV in biological matter: liquid water (benchmark) human blood, skin, thyroid, and spleen are assessed. Results show that in the studied biological media for higher energy beam i): noticeable modification are seen in Bragg peak, shift in peak-position; ii) maximum projected range: 595.2 μm suggests effective use of 12C ions for cancer tumor therapy, especially for superficial cancer tumors, without much damage to healthier cells; iii) longitudinal straggling ~ 22.6 μm, low lateral straggling ~ 4.7 μm suggests potential application of 12C ions in treating cancer tumor nearby critical organs, causing minimal damage in nearby normal tissues.
Structural and electronic properties of n-vinylcarbazole - 3-methoxythiophene copolymer: DFT analysisSharma, P; Khare, K P; Srivastava, R; Srivastava, A; Kathal, R
doi: 10.1088/1742-6596/2663/1/012030pmid: N/A
Conducting polymers are advantageous over traditional inorganic materials in terms of better environmental stability, tunable electrical characteristics, excellent optical and mechanical properties etc. Copolymerization is a preferred common process to modify material properties amongst the diverse accessible synthetic approaches. The present study reports copolymerization synthesis and determination of stability and electronic properties of chosen monomers and their copolymer using density functional theory (DFT)-based approach for n-vinyl carbazole (NVK) and the mono-substituted thiophene bearing a methoxy group at the third position of the thiophene ring (3-MeOTH). On comparison with the monomers, the copolymer of n-vinylcarbazole and 3-methoxythiophene (NVK-3-MeOTH) reveals enhanced stability, with reduced HOMO-LUMO gap, energy gap (Eg) in chloroform media, as well as variation in density of state (DOS) profile. Further, decrements in total energy, ionisation potential, electron affinity, and dipole moment are observed due to copolymerization.
Suppression of stimulated Raman scattering in magnetized plasma channelKhan, Khalid; Kamboj, Oriza; Kant, Niti; Rajput, Jyoti
doi: 10.1088/1742-6596/2663/1/012005pmid: N/A
The current study illustrates the occurrence of Stimulated Raman Scattering (SRS) within a plasma channel characterized by magnetized density conditions. Stimulated forward Raman scattering takes place when a laser beam with a q-Gaussian profile traverses a plasma while being exposed to a wiggler magnetic field. The coupling between the applied magnetic field and the generated Langmuir wave ensures the Raman process generation. As a result, second Langmuir wave is produced which remains strongly damped on the electrons. An external magnetic field is employed for the effective suppression of the SRS. The initial enhancement in the growth rate is observed with the magnetic field and after attaining the maxima, it suppresses with the growth rate.
Static and Dynamic Properties of SPC/E Water ModelNunia, Khushi; Bayen, Moushila; Ansary, Sahire Azam; Kumar, Anupam; Mishra, Pankaj
doi: 10.1088/1742-6596/2663/1/012037pmid: N/A
In this work, we have studied static and dynamic properties of bulk water using SPC/E water model. We have considered 1500 water molecules confined to a three dimensional box. LAMMPS software has been used to perform molecular dynamic simulation under canonical ensemble. The partial radial distribution functions, diffusion coefficients, velocity autocorrelation functions, and mean square displacements have been calculated at 300K for different densities ranging from 900 kg/m3 to 1000 kg/m3. The principle peak heights of the partial radial distribution functions are found to decrease with increase in high density regime showing abnormal behaviour in this density regime.
DFT investigations of a copolymer of Dimeric Pyrrole and Dimeric 3-methyl furanSharma, S; Khare, K P; Srivastava, R; Kathal, R; Srivastava, A
doi: 10.1088/1742-6596/2663/1/012031pmid: N/A
Conducting polymers are mainly used for the electronic applications, owing to its large surface area, good environmental stability, low cost, flexibility, and simplicity in synthesis. Among the conducting polymers, Dimeric Pyrrole and its copolymers are the most widely investigated and promising for commercial applications. Copolymerization is the best route to modify the conductivity of copolymers than their host polymers. The present work investigates the stability analysis and the electronic properties in terms of the HOMO-LUMO gap, DOS plot, and the electron density of dimeric Pyrrole, dimeric 3-methylfuran, and their copolymer using a density functional theory (DFT). We observed that the stability increases as the total energy in the copolymer of dimeric Pyrrole and dimeric 3-methylfuran decreases than its host dimers. The negative total energy confirms the stability of the copolymer than its host polymers. The electron density predicted the electron behavior of the atoms present in the system. As a result, we conclude that computationally synthesized copolymer with improved stability and better electronic properties (HOMO-LUMO gap, DOS profile, and electron density), maybe a better choice for the polymeric sensors sensor for drug molecules and their metabolic intermediates.