Editorial Material
Chemistry, Physical
Salmon Landi
Summary: Two papers in Journal of Molecular Liquids mistakenly named the same equation differently. This comment clarifies these errors to prevent misunderstanding regarding determining band gap energy from diffuse reflectance measurements using Kubelka Munk model and Tauc plot.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
D. Naveena, R. Dhanabal, A. Chandra Bose
Summary: This study analyzes the properties of undoped and La doped CuO thin films and finds that 6 wt% of La doped CuO thin films exhibit high optical absorption and low resistivity, making them suitable as absorber material for solid state solar cells.
Article
Chemistry, Physical
Alberto Mannu, Francesca Cardano, Andrea Fin, Salvatore Baldino, Cristina Prandi
Summary: This study analyzed the structural features of five ternary eutectic systems containing choline chloride through UV-VIS spectroscopy, investigating the relationship between composition and energy. The results showed that composition and operational parameters influence structural disorder, and the DES-aging has a significant impact on the system structure.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Ceramics
Subia Ambreen, N. D. Pandey, Arti Chouhan, Hemaunt Kumar, Ashutosh Pandey
Summary: By chelation treatment, niobium oxide nanoparticles exhibit high photocatalytic activity for removing organic pollutants from water effectively.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Amina Nazim, Bushra Parveen
Summary: This research synthesized and characterized zinc sulfide (ZnS) nanoparticles with different metal contents using hydrothermal method. The results showed that increasing the metal content improved the properties of the nanoparticles and allowed for tuning of the band gap, making them suitable for ultra-wide-band gap applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Lukasz Harynski, Adrian Olejnik, Katarzyna Grochowska, Katarzyna Siuzdak
Summary: A facile method for estimating the exponent in the Tauc equation directly from the UV-vis spectra is presented in this study. The Tauc exponent is calculated from the tangent slope of the absorption data, providing information about optical transition types and input for band gap calculations. The method is applied to TiO2 thin film, nanotubes, and nanocomposites with other metal oxides, yielding promising results for both transmission and reflection.
Article
Chemistry, Multidisciplinary
Ethan Chi Ho Wen, Peter H. Jacobse, Jingwei Jiang, Ziyi Wang, Steven G. Louie, Michael F. Crommie, Felix R. Fischer
Summary: Substitutional heteroatom doping in 1D graphene nanoribbons is a versatile tool for low-dimensional functional materials, but previous methods only result in modest realignment of energy levels. This study introduces nitrogen core-doped armchair GNRs that yield greater energy-level shifting through the substitution of carbon atoms with nitrogen atoms along the backbone.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Physics, Condensed Matter
Salmon Landi Jr, Iran Rocha Segundo, Catia Afonso, Orlando Lima Jr, Manuel F. M. Costa, Elisabete Freitas, Joaquim Carneiro
Summary: The determination of band gap energy of semiconductors powder materials can be achieved through diffuse reflectance spectroscopy. In this study, the classical theory proposed by Kubelka and Munk as well as the Tauc plot method are investigated. The results show that the samples treated with a mechaniochemical process exhibit lower band gap energy compared to previous studies.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Chemistry, Physical
Flavia P. N. Inbanathan, Pawan Kumar, Kiran Dasari, Ram S. Katiyar, Jixin Chen, Wojciech M. Jadwisienczak
Summary: CdSe thin films were deposited on ITO glass substrates using PLD at different growth temperatures. AFM analysis showed an increase in surface roughness with deposition temperature, while optical constants and film thickness were obtained from ellipsometry analysis. The CdSe thin films had a band gap of approximately 1.71 eV and were suitable for photovoltaics with a refractive index of around 3.0 and extinction coefficient of around 1.0.
Article
Chemistry, Physical
Can Wang, Kaili Wang, Huaiqiang Wang, Qichao Tian, Junyu Zong, Xiaodong Qiu, Wei Ren, Li Wang, Fang-Sen Li, Wei-Bing Zhang, Haijun Zhang, Yi Zhang
Summary: Superlattice potentials imposed on graphene can alter its Dirac states, enabling the realization of various quantum phases. We experimentally observed a replica Dirac cone at the Brillouin zone center induced by a superlattice in heavily doped graphene with Gd intercalation using angle-resolved photoemission spectroscopy (ARPES). The replica Dirac cone arises from the (root 3x root 3)R30 degrees superlattice formed by the intervalley coupling of two nonequivalent valleys, accompanied by a bandgap opening. The modulation of the replica Dirac band is primarily attributable to the residual frozen gas, which can act as a source of intervalley scattering at temperatures below 30 K. Our results highlight the persistence of the hidden Kekule'-like phase within heavily doped graphene, enriching our current understanding of its replica Dirac Fermions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
W. Belhadj, A. Timoumi, F. A. Alamer, O. H. Alsalmi, S. N. Alamri
Summary: Nanostructured TiO2-GO thin films were successfully synthesized using spin coating technique, exhibiting excellent structural, morphological, and optical properties with high transparency and smooth surfaces. Increasing spin coating speed was found to decrease film thickness and optical band gap, making TiO2-GO thin films promising candidates for transparent conducting oxide electrodes in solar cells.
RESULTS IN PHYSICS
(2021)
Article
Chemistry, Physical
Neeraj Kadian, Renu Kumari, Ankit Panchal, Jasvir Dalal, Diwakar Padalia
Summary: Doped ferrite materials, such as Gadolinium-doped magnetite samples, have enhanced magnetic properties, higher Curie temperature, biocompatibility, and potential energy applications. In this study, the effects of doping on the structural and optical properties of Fe3O4 are investigated. The results show that doping increases crystalline size and cell volume, while reducing micro-strain, indicating the potential use of these synthesized nanoparticles for photocatalytic applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Multidisciplinary
Nikita V. Tepliakov, Johannes Lischner, Efthimios Kaxiras, Arash A. Mostofi, Michele Pizzochero
Summary: In this study, a new perspective on the electronic structure of armchair graphene nanoribbons is presented using simple model Hamiltonians and ab initio calculations. The research demonstrates that the energy-gap opening in these nanoribbons is caused by the breaking of a hidden symmetry through long-ranged hopping of pi electrons and structural distortions at the edges. This hidden symmetry can be restored or manipulated through in-plane lattice strain, enabling continuous energy-gap tuning, the emergence of Dirac points at the Fermi level, and topological quantum phase transitions. This work establishes an original interpretation of the semiconducting properties of armchair graphene nanoribbons and provides guidelines for their rational electronic structure design.
PHYSICAL REVIEW LETTERS
(2023)
Article
Spectroscopy
Muthaiah Shellaiah, Wei-Li Lin, Putikam Raghunath, Kien Wen Sun, Ming-Chang Lin
Summary: The crystallinity, optical band gap, and broadband emission properties of novel two-dimensional melamine lead iodide perovskite (2D-C3H8N6PbI4) were investigated and compared with 2D-C3H8N6PbCl4/2D-C3H8N6PbBr4 perovskites. Various techniques including SEM, EDS, PXRD/SXRD, DFT, and X-ray crystallography simulations were used to study the crystal structure, morphology, and composition of the perovskites. The optical band gaps were determined from absorbance and DFT studies, and the broadband emission between 300 and 800 nm was observed and analyzed using Gaussian distributions and energy transfer mechanisms.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Multidisciplinary
Jun-Jie Wang, Can Fu, Hai-Yang Cheng, Xiao-Wei Tong, Zhi-Xiang Zhang, Di Wu, Li-Miao Chen, Feng-Xia Liang, Lin-Bao Luo
Summary: The study introduces a non-wide band gap semiconductor ultraviolet photodetector utilizing silicon nanowire arrays, which exhibit sensitivity to UV light but insensitivity to visible and infrared light. This novel device shows promise for sensitive UV photodetectors, with characteristics comparable to or even better than traditional wide band gap semiconductor devices.
Article
Chemistry, Physical
N. Bano, I Hussain, F. Saleemi, S. Sawaf, Qura Tul Ain
Article
Nanoscience & Nanotechnology
Qura Tul Ain, Samina Hyder Haq, Abeer Alshammari, Moudhi Abdullah Al-Mutlaq, Muhammad Naeem Anjum
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2019)
Article
Engineering, Electrical & Electronic
Qura Tul Ain, N. Bano, Abeer Al-Moejdl, Abeer Alshammari, I Hussain, Muhammad Naeem Anjum
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2019)
Article
Materials Science, Multidisciplinary
Qura Tul Ain, Samina Hyder Haq, Abeer Al-Modlej, Abeer Alshammari, Shahzad Ahmed, Muhammad Naeem Anjum
MATERIALS RESEARCH EXPRESS
(2019)
Article
Endocrinology & Metabolism
Sadia Saeed, Muhammad Arslan, Jaida Manzoor, Sadia M. Din, Qasim M. Janjua, Hina Ayesha, Qura-tul Ain, Laraib Inam, Stephane Lobbens, Emmanuel Vaillant, Emmanuelle Durand, Mehdi Derhourhi, Souhila Amanzougarene, Alaa Badreddine, Lionel Berberian, Stefan Gaget, Waqas I. Khan, Taeed A. Butt, Amelie Bonnefond, Philippe Froguel
Article
Nanoscience & Nanotechnology
Qura Tul Ain, Samina Hyder Haq
Article
Electrochemistry
Khalid E. Alzahrani, Abdullah Alodhayb, Mahmoud Algwati, Amal F. Alanazi, Qura Tul Ain, Abdulaziz K. Assaifan, Salim Manoharadas, Abeer Alshammari, Abdullah Alswieleh, Hamad Albrithen
Summary: The study utilized a micromechanical sensor and a microfluidic channel to observe bacterial susceptibility to bacteriophages, demonstrating a rapid and accurate assessment of bacterial metabolic activity before and after viral infection. The technique provides a small-volume (150 picoliters) method for assessing bacteria susceptibility to bacteriophages.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Analytical
Dalal A. Aloraini, Aljawhara H. Almuqrin, Amal Alanazi, Qura Tul Ain, Abdullah N. Alodhayb
Summary: The COVID-19 pandemic calls for simplified, quick, efficient, and affordable diagnostic methods, as the current RT-PCR technique is manually laborious and expensive. Microcantilever sensors show promise in rapid COVID-19 detection by distinguishing between complementary and noncomplementary target DNA on a micro to nanoscale. Their ability to identify new coronavirus variants makes microcantilever sensors a potential key tool in combating the spread of COVID-19.
Article
Nanoscience & Nanotechnology
Abir Abdullah Alamro, Samina Hyder Haq, Amani Alghamdi, Nojood Altawaijri, Amjad Saeed Alali, Abdullah Naif Alotaib, Al-Anood Murshed, Qura Tul Ain
Summary: The study demonstrated that PEG-nGO caused significant hepatotoxicity in mature mice, with maximum damage and toxicity observed during the first 2 hours post-injection. This included increased ALT and ALP activity, mobilization of total glycogen from the liver, and maximum necrosis and apoptosis of hepatocytes within the first hour. However, liver tissues started to recover substantially after 4 hours, indicating that the low dose toxicity of PEG-nGO to the liver was transient and reversible.
Article
Medical Laboratory Technology
Madeeha Khan, Qura Tul Ain, Amjad Nawaz, Mohammad Iqbal Khan, Fouzia Sadiq
Summary: This study aimed to compare the accuracy of LDL-C calculated by different equations with directly measured LDL-C. The results showed that the Teerakanchana equation had a strong positive correlation and the least median difference with directly measured LDL-C in the overall sample and in the high triglyceride range. Therefore, it may be used as an alternative to the Friedewald equation for the Pakistani population.
CLINICA CHIMICA ACTA
(2022)
Article
Multidisciplinary Sciences
Qura Tul Ain, Kiran Siddique, Sami Bawazeer, Iftikhar Ali, Maham Mazhar, Rabia Rasool, Bismillah Mubeen, Farman Ullah, Ahsanullah Unar, Tassadaq Hussain Jafar
Summary: Quinoa is a nutritious and stress-tolerant food that has been used in Indigenous cultures for thousands of years. Due to its high nutritional content and adaptability, it is considered a good candidate for increasing food security in a world with increased climatic variations.
Article
Nanoscience & Nanotechnology
Nojood Altwaijry, Qura Tul Ain, Hissah Alnuwaysir, Abir Alamro, Amani Alghamdi, Samina Hyder Haq
Summary: This study demonstrated that treatment with PEG-nGO caused DNA damage and cytotoxicity to the brain in mice. Caution should be taken when using PEG-nGO as a drug carrier.
JOURNAL OF BIOMEDICAL NANOTECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Mahmood Rasool, Arif Malik, Sulayman Waquar, Qura Tul Ain, Rabia Rasool, Muhammad Asif, Nisreen Anfinan, Absarul Haque, Hina Alam, Sagheer Ahmed, Mohammad Hamid Hamdard
Summary: The study revealed significant increases in inflammatory and stress-related markers in patients with colon cancer, along with lower levels of antioxidants. This suggests that oxidative stress and lipid peroxidation play a crucial role in the development of colon cancer by influencing various signaling cascades and DNA modifications.
