Article
Materials Science, Multidisciplinary
J. I. Contreras-Rascon, J. Diaz-Reyes, A. Flores-Pacheco, R. Lozada Morales, M. E. Alvarez-Ramos, J. A. Balderas-Lopez
Summary: This work investigates the modifications of the crystalline structure and properties of nanostructured cadmium sulphide (CdS) thin films by introducing gold quantum dots to form a hybrid metal-semiconductor system. Various characterization techniques such as XPS, XRD, and TEM were used to study the structural changes, showing a significant impact on properties in the CdS-Au samples, indicating a strong quantum confinement effect.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Physical
Mohd. Shkir, Z. R. Khan, Abdullah S. Alshammari, M. Gandouzi, I. M. Ashraf, S. AlFaify
Summary: La@CdS nanostructured thin films were successfully fabricated on glass substrates with hexagonal wurtzite structure and demonstrated excellent opto-nonlinear and visible light photo-detection properties. The optical band gap values of the films ranged from 2.40 to 2.42 eV, while the third order nonlinear optical susceptibility values were remarkably enhanced after La doping.
SURFACES AND INTERFACES
(2021)
Article
Crystallography
Elena Balashova, Aleksandr A. Levin, Alexander Fokin, Alexey Redkov, Boris Krichevtsov
Summary: Comparative analysis of crystal structure, Raman spectra, and dielectric hysteresis loops was conducted on organic ferroelectric crystals of 2-methylbenzimidazole grown using different methods. While the crystals showed identical molecular vibrations and similar crystal structure, differences in coercive fields and polarization switching speed were observed, possibly due to solvent molecules penetrating the crystal structure. Analysis within the Kolmogorov-Avrami-Ishibashi model revealed varying characteristic frequencies and activation fields.
Article
Energy & Fuels
Vinayak Adimule, Sheetal Batakurki, Vinay S. Bhat, Basappa C. Yallur, Gurumurthy Hegde, Chinna Bathula
Summary: Hybrid nanostructures with enhanced storage and electrical properties were achieved by decorating Sr2+ nanoparticles (NPs) on Sm2O3@CoO nanostructures (NS) using chemical precipitation.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Jaya Khatter, R. P. Chauhan
Summary: This research investigates the modifications induced by gamma rays on cadmium sulphide nanorod mesh, revealing changes in structural, optical, and electrical properties. The XRD patterns showed no phase transformation but variations in relative intensity, with an increase in crystallite size with gamma dose. Additionally, gamma radiation significantly impacted the transport properties of CdS nanorods, increasing current values due to ionization, defects, and grain coalescence.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
M. Nagaraja, P. Raghu, H. M. Mahesh, Jayadev Pattar
Summary: The study fabricated and analyzed thin films of ITO/CdS and ITO/ZnO/CdS bi-layer, demonstrating that ITO/ZnO/CdS films exhibit better structural and optical properties compared to ITO/CdS films.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
S. Ildan Ozmen, M. Diallo, R. Suna Karatekin, H. Metin Gubur
Summary: This study fabricated CdS/CdSe heterojunction films at different deposition times using chemical bath deposition. The influence of deposition time on the optical, structural, morphological, electrical, and photoelectrochemical properties of the heterojunctions was investigated. The results showed that the parameters of the films improved with increasing deposition time, and the 10 h deposited CdS/CdSe film exhibited better photocurrent under light illumination.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Pallavie Tyagi, Sudhanshu Choudhary
Summary: The study used first principle calculations to investigate the electronic and optical properties of nanostructures formed by a monolayer of molybdenite with adsorption of alkali metals and halogens. Results showed that different adsorbed structures on MoS2 can lead to absorption peak shifts, including red shift and blue shift, indicating modifications in the absorption spectrum.
Article
Chemistry, Physical
Shohaib Abass, Anita Bagri, Khalid Sultan
Summary: The properties of Nd2NiMnO6 have been modified by doping divalent Sr and introducing oxygen vacancies. The structural disorder and mixed valence of Ni and Mn have been confirmed through various spectroscopy techniques. Dielectric and electrical studies show the dependence of these properties on frequency and temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Yiwen Zhang, Baogang Guo, Wei Feng, Yuanli Li, Haifeng Liu, Renjie Li, Hongwei Wu, Xiaoyan Zhong, Guohua Ma, Ruishi Xie
Summary: This study synthesized Eu:Bi2WO6 nanostructures with different concentrations of Eu ions and generated CdS on their surface to form Eu:Bi2WO6/CdS composites. The effects of Eu doping on the properties of the composites were studied, clarifying the mechanisms for improving optical and photocatalytic performance. The introduction of Eu3+ altered the band gap of the photocatalyst, while epitaxial CdS decreased recombination probability and improved photocatalytic activity. This research provides new insights for rational design and understanding of atomic-scale complex structures for applications in energy and environmental protection.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
E. M. Mahrous, M. Me. Barakat, Radiyah A. Bahareth, K. Benthami, S. A. Nouh
Summary: In this study, nanocomposites of Makrofol polycarbonate and Cadmium Sulfide nanoparticles were synthesized using an ex-situ casting procedure. The effects of radiation dosage on the structure and optical properties of the nanocomposite films were investigated. It was found that the bandgap decreased with increasing dosage due to damage to the crystalline phase. Additionally, significant color differences were observed in the non-irradiated nanocomposite films.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Review
Chemistry, Multidisciplinary
Breanna Clarke, Khashayar Ghandi
Summary: This review provides an overview of the structure and properties of ZnO nanostructures and discusses their applications in various industries. It examines previous research on ZnO nanorod growth using UV-visible spectroscopy and scanning electron microscopy, and highlights the importance of synthesis processes in determining nanostructure properties and applications. The review also unveils the mechanism of ZnO nanostructure growth and suggests future directions for research.
Article
Materials Science, Multidisciplinary
Andrey V. Osipov, Shukrillo Sh. Sharofidinov, Elena V. Osipova, Andrey V. Kandakov, Andrey Y. Ivanov, Sergey A. Kukushkin
Summary: A new method of growing layers of three main crystal modifications of Ga2O3 has been developed in this study. By combining the hydride vapor-phase epitaxy method with a silicon crystal substrate with a buffer layer, layers of alpha-phase, epsilon-phase, and beta-phase Ga2O3 were successfully grown. It was found that the metastable alpha- and epsilon-phases transform into the stable beta-phase at temperatures above 900 degrees C.
Article
Engineering, Electrical & Electronic
Pinar K. Bakacak, Emre Gur, Ozkan Bayram, Sebahattin Tuzemen, Onder Simsek
Summary: The study investigated the effects of growth pressure on the characteristics of ZrO2 thin films produced by radio frequency magnetron sputtering method. The results showed significant changes in structural and optical properties of the films, with XRD and PL analyses being particularly effective. ZrO2 thin films are considered promising materials for transparent electronic devices due to their high transmittance and ability to cover both visible and near-infrared spectral range.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Silviu Polosan, Paul Ganea, Andrei Nitescu
Summary: Phosphate tellurite glasses were successfully synthesized by melt quenching, with a composition of 40%ZnO+40%P2O5+20%TeO2. Compared to glasses synthesized with H3PO4, those containing P2O5 showed greater chemical stability. Magneto-optical measurements revealed a specific transition associated with tellurium colloids, while densities and electrical conductivity increased with melting temperature.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Physical
Pooja Singh, Shelly Singh, Neena Jaggi, Ki-Hyun Kim, Pooja Devi
Summary: Bacteriorhodopsin (bR) is a photoactive protein commonly used in various applications such as solar cells, fuel cells, and biosensors due to its stability and proton-release characteristics. Its potential for hydrogen production through water splitting makes it an attractive platform for sustainable energy economy. Recent advances in bR-based hybrid electrodes for solar cells, water-splitting devices, and fuel cells are summarized in this review.
Article
Chemistry, Physical
Mehak Singla, Deepa Sharma, Neena Jaggi
Summary: Carbon nano-materials show good hydrogen gas sensing capability, with modified derivatives being used for enhanced sensitivity. This study investigates Pt-Cu co-doped graphene for hydrogen molecule adsorption, finding greatly enhanced reactivity compared to other doped materials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Spectroscopy
Deepa Sharma, Swastika Banerjee, Swapan K. Pati, Neena Jaggi
Summary: The study utilized density functional theory to simulate the effect of conjugation on vibrational modes in an inhomogeneous dimer formed by different chiralities of carbon nanotubes, showing a red shift and indicating structural stability. Various vibrational modes in different frequency regions were discussed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Engineering, Electrical & Electronic
Nirmala Rani, Neena Jaggi
Summary: In this study, nanostructured composites of FMWCNTs/SnO2 were prepared and characterized using various analytical methods. The electrical properties were investigated, and potential applications in gas sensing, supercapacitors, and hydrogen storage were discussed.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Neeraj Rathee, Neena Jaggi
Summary: In this study, CdSe and Eu-doped CdSe nanostructures were synthesized using a hydrothermal route, and their properties were characterized through various analytical techniques. The results showed an increase in crystallite size for Eu-doped CdSe, slight changes in optical band gap, and an increase in AC conductivity with temperature.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Mehak Singla, Neena Jaggi
Summary: Theoretical analysis using density functional theory was conducted to study the interaction between hydrogen molecules and copper-decorated nitrogen-doped defective graphene nanoribbons, which found that Cu-decorated SV+3N is the most efficient candidate for hydrogen molecule interaction, enabling reversible storage without dissociation.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Review
Engineering, Electrical & Electronic
Mehak Singla, Neena Jaggi
Summary: The excessive usage of fossil fuel energy has led to the development of alternative fuels, with hydrogen emerging as a promising option due to its production from renewable sources and emission of only heat and water upon combustion. Graphene-based materials, with their exceptional properties, are being explored for hydrogen adsorption and storage, although modifications are needed to meet specific requirements. Studies on the capacity of graphene materials for hydrogen storage through physisorption or chemisorption are being conducted using Density Functional theory, showing promising results for the potential sensing ability of the material.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Nanoscience & Nanotechnology
Nirmala Rani, Kanika Khurana, Neena Jaggi
Summary: "The current study focused on comparing the structural and electrical properties of MWCNTs/SnO2 nanocomposites synthesized through hydrothermal and co-precipitation methods. The nanocomposites prepared via hydrothermal method showed better electrical conductivity and crystal structure, making them suitable for various applications."
APPLIED NANOSCIENCE
(2021)
Article
Physics, Condensed Matter
Kanika Khurana, Nirmala Rani, Neena Jaggi
Summary: The composition and optical properties of hybrid nano-structured thin films of CdS quantum dots incorporated on Au, Ag, and Cu nanoparticles were investigated. The study found that the photoluminescence of CdS quantum dots was enhanced by the surface plasmon resonance effect of the metallic nanoparticles. The results of this study on plasmonic nanostructures will be further utilized in metal enhanced fluorescence sensors.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Materials Science, Multidisciplinary
Mehak Singla, Neena Jaggi
Summary: This study investigates the adsorption of hydrogen gas molecules on boron, nitrogen, gold co-doped graphene using Density Functional Theory. It found that the co-doped graphene systems outperform single doped systems due to the combined influence of hetero-atoms, and different configurations result in distinct responses to hydrogen adsorption. The primary goal is to better understand the structure, stability, and potential capability of hydrogen molecule detection by various combinations of boron, nitrogen, gold co-doped graphene geometries.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Kanika Khurana, Neena Jaggi
Summary: This study investigates the optical properties and morphology of Ag-CdS QDs and proposes a detection system based on the photoluminescence enhancement of Ag-CdS QDs for ammonia measurement. The experimental results show that the PL intensity of Ag-CdS QDs is enhanced by controlling the concentration of NH4OH, providing a rapid, low-cost, simple, and reproducible ammonia sensor for continuous water quality monitoring.
JOURNAL OF NANOPARTICLE RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Nirmala Rani, Kanika Khurana, Neena Jaggi
Summary: In this study, the modifications induced in functionalized multiwalled carbon nanotubes (FMWCNTs) by gamma irradiation are explored. The results show that gamma irradiation has an effect on the crystalline nature of the nanotubes, causing structural ordering or disordering depending on the dose. It also changes the chemical composition and electrical properties of the nanotubes.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
Nirmala Rani, Neena Jaggi
Summary: In this study, carbon nanotubes (CNTs) with high aspect ratio and controlled morphology were fabricated and subjected to gamma irradiation. The results indicate that the peak intensity and electrical conductivity of the irradiated films were significantly changed, while the structural perfection of the films was improved.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Ritu Verma, Neena Jaggi
Summary: This study investigates the effects of osmium and boron co-doping on hydrogen storage in carbon nanotubes using ab-initio calculations. The results show that osmium/boron co-doping enhances the hydrogen storage capacity, but an increase in boron atom concentration reduces the storage ability.
DIAMOND AND RELATED MATERIALS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Mehak Singla, Neena Jaggi
Summary: In this research, we modified the structural and electronic properties of Ag doped graphene for enhanced hydrogen adsorption capability using density functional theory. The findings suggest that Ag doped graphene exhibits better adsorption potential for hydrogen molecules.
MATERIALS TODAY-PROCEEDINGS
(2022)
