Article
Chemistry, Physical
M. Shoaib, I Khan, N. Chanthima, Abdullah Alhuthali, N. Intachai, S. Kothan, A. Ahad, I Ullah, S. Khattak, G. Rooh, J. Kaewkhao, T. Ahmad
Summary: Two Er3+-doped phosphate glass systems were developed and their physical, optical, and luminescent properties were systematically studied. The results indicate that these glass systems have potential applications in optical amplifiers and tunable lasers.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Optics
N. Luewarasirikul, S. Sarachai, M. Djamal, J. Kaewkhao
Summary: Er3+-doped BaNaB glasses were prepared and their luminescence properties were studied. The glasses exhibited strong emission intensities in the near-infrared and visible regions. Especially, the glass samples with 3.0% and 4.0% of Er3+ showed the best performance in both the near-infrared and visible regions.
Article
Materials Science, Multidisciplinary
H. M. Elsaghier, M. A. Azooz, Nehad A. Zidan, W. Abbas, Aly Okasha, S. Y. Marzouk
Summary: Alkaline earth titanium borate glasses doped with various ratios of Er3+ ions were fabricated and studied for their density, spectral characteristics, intensity parameters, etc. The results show that erbium doped glasses exhibit high laser efficiency and potential for photonic applications.
Article
Chemistry, Applied
Nisha Deopa, Mukesh K. Sahu, Sumandeep Kaur, Aman Prasad, K. Swapna, Vinay Kumar, R. Punia, A. S. Rao
Summary: The study of Er3+ doped LiPbAlB glasses showed that an Er3+ ion concentration of 1.5 mol% is optimal for exhibiting high quantum efficiency and suitability for visible and near-infrared photonics applications.
JOURNAL OF RARE EARTHS
(2021)
Article
Optics
Vinod Hegde, G. Devarajulu, A. G. Pramod, Sangeeta B. Kolavekar, Dalal Abdullah Aloraini, Aljawhara H. Almuqrin, M. Sayyed, G. Jagannath
Summary: In this study, borate-based glass hosts co-doped with Er3+ and Er3+/Yb3+ were synthesized for near-infrared emission. The addition of Yb3+ enhanced the emission gain cross-section of the glass and lowered the pump threshold.
Article
Materials Science, Ceramics
B. N. Swetha, K. Keshavamurthy, A. G. Pramod, G. Devarajulu, K. P. Roopa, D. Rajeshree Patwari, Imen Kebaili, Samia ben Ahmed, M. Sayyed, Sultan Khan, P. Ramesh, K. N. Sathish, Naseem Fatima, K. Annapurna, G. Jagannath
Summary: The research found that the presence of Ag nanoparticles can significantly enhance the luminescence performance of glass samples doped with Sm3+, and as the concentration of Ag nanoparticles increases, the symmetry and ionicity of the glass samples also increase.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Engineering, Electrical & Electronic
E. Kaewnuam, N. Wantana, J. Kaewkhao
Summary: This study investigated the properties of lithium bismuth aluminum borate glasses doped with Er3+ ion and enhanced with co-doping of Yb3+ ion. The results showed that the Er3+/Yb3+ co-doped glasses had potential for applications as an infrared laser medium and a fiber optics amplifier.
INTEGRATED FERROELECTRICS
(2022)
Article
Materials Science, Multidisciplinary
D. Said, M. F. Malek, H. Nurhafizah, E. S. Sazali, A. L. Anis, R. Hisam
Summary: Er3+/Ho3+ doped Al2O3-Na2O-TeO2 glasses containing different concentrations of V2O5 were prepared and their structural, optical, and photoluminescence properties were studied. The presence of non-bridging oxygen in the glass network was demonstrated by measuring the relative areas of TeO4 and TeO3. The optical absorption edge analysis showed a decrease in EiOpt due to the prevalence of non-bridging oxygen. The Judd-Ofelt oscillator strength increased with an anomalous drop at x = 1.0 mol% due to the competition between bridging and non-bridging oxygen. The photoluminescence spectra revealed dominant emissions in the green and red regions, with a decrease in intensity as vanadium increased.
Article
Materials Science, Multidisciplinary
Adon Jose, Subash Gopi, T. Krishnapriya, Twinkle Anna Jose, Cyriac Joseph, N. V. Unnikrishnan, P. R. Biju
Summary: The multicomponent borosilicate glasses activated with different concentrations of Er3+ ions were studied for their radiative characteristics and luminescence properties, showing potential for optical amplifier and laser applications due to their improved gain spectra in the NIR region.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Hissah Saedoon Albaqawi, S. M. AL-shomar, Ibrahim Mohammed Danmallam, Ibrahim Bulus
Summary: A new series of Dy3+ doped calcium sulfo-phospho-borate (CSPB:xDy) glass system was fabricated and its non-crystalline state was verified. The radiative potentials of CSPB:xDy glass host were determined through calculations of optical band gaps, refractive indices, and Judd-Ofelt quantities. Under 348 nm excitation light, the glass showed two prominent emission bands at 480 nm and 574 nm, with the peak intensity reaching its highest at 0.8 mol% Dy3+ before diminishing due to dipole-dipole interaction. The CSBP0.8Dy glass demonstrated high effective quantum efficiency, branching ratio, and emission cross-sectional area, making it suitable for solid state light emitting device applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Optics
Michael R. George, Paul E. Critchley, George F. S. Whitehead, Andrew J. Bailey, Francesco Cuda, Benedict N. Murdin, Martin C. Grossel, Richard J. Curry
Summary: A study was conducted on the ability of pyridine-2,6-dicarboxylic acid and its analogues to sensitize emission from various rare earth ions, showing different sensitization effects. The 4-chloro-substituted complex demonstrated enhanced near-infrared emission for Nd3+ and Er3+, indicating potential applications in this area.
JOURNAL OF LUMINESCENCE
(2021)
Article
Optics
S. N. Mohamed, E. S. Sazali, A. K. Yahya
Summary: The optical absorption and emission properties of two glass series were studied, revealing the effect of co-doping V2O5 and Er2O3 on the luminescence. Different concentrations of additives led to different results.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Ceramics
H. M. Elsaghier, M. A. Azooz, Nehad A. Zidan, W. Abbas, Aly Okasha, S. Y. Marzouk
Summary: Alkali cadmium phosphate glasses doped with erbium ions were prepared using traditional melt-quenching technique. The structure and optical properties of the doped glasses were investigated using FTIR, Raman, and UV-Vis-NIR spectroscopies. The Judd-Ofelt theory was used to analyze the structural changes and calculate radiative parameters. The results showed that the glasses had good suitability for laser and amplifier applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Engineering, Electrical & Electronic
Narun Luewarasirikul, Jakrapong Kaewkhao
Summary: Praseodymium doped barium sodium borate glasses were prepared and their optical and luminescent properties were investigated. The glasses showed strong absorption in the UV-Vis and near-infrared regions and emitted green and orange light. Judd-Ofelt analysis indicated the potential of the glass samples for photonic applications.
INTEGRATED FERROELECTRICS
(2022)
Article
Engineering, Electrical & Electronic
N. Luewarasirikul, S. Sarachai, J. Rajagukguk, J. Kaewkhao
Summary: In this study, Eu3+-doped oxide and oxyfluoride glasses were fabricated to investigate their optical and emission properties. The results showed that the oxyfluoride glass sample has higher lasing potential, and the emitted light is reddish-orange in color.
INTEGRATED FERROELECTRICS
(2023)
Article
Chemistry, Physical
V. P. Prakashan, Gejo George, M. S. Sanu, M. S. Sajna, A. C. Saritha, C. Sudarsanakumar, P. R. Biju, Cyriac Joseph, N. Unnikrishnan
APPLIED SURFACE SCIENCE
(2020)
Article
Engineering, Electrical & Electronic
M. S. Sajna, V. P. Prakashan, M. S. Sanu, G. Vimal, P. R. Biju, Cyriac Joseph, V. P. Mahadevan Pillai, N. V. Unnikrishnan
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Physics, Condensed Matter
Sunil Thomas, Naser Qamhieh, Saleh T. Mahmoud, Guy J. Adriaenssens
PHYSICA B-CONDENSED MATTER
(2020)
Correction
Chemistry, Physical
V. P. Prakashan, M. S. Sajna, G. Gejo, M. S. Sanu, A. C. Saritha, P. R. Biju, J. Cyriac, N. V. Unnikrishnan
Article
Spectroscopy
Sunil Thomas, Rani George, Naser Qamhieh, K. G. Gopchandran, Saleh T. Mahmoud, Alessia Quatela
Summary: This study synthesized a Sr1.0Ba2.0B6O12:O.5Sm(3+) phosphor using the solid-state reaction method, and explored its spectroscopic properties including morphology, elemental composition, phase changes, crystallite phases, molecular vibrations, energy bandgap, bonding nature, and radiative properties. The phosphor emits cool-white light with high spectroscopic quality factor, stimulated-emission cross-section, quantum efficiency, and white-light emission, making it useful for display and lighting applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Applied
M. S. Sajna, Sanu Mathew Simon, N. Unnikrishnan, Kishor Kumar Sadasivuni
Summary: Photocatalytic processes induced by solar energy and graphene-based nanostructures show great potential in solving energy and environmental issues, and have various applications in water treatment, fuel conversion, and organic compound synthesis.
TOPICS IN CATALYSIS
(2022)
Article
Chemistry, Analytical
Shaik Nayab Rasool, Shaik Shabeena, Culala Rajasekharaudayar Kesavulu, Singarapu Babu, Asanapuram Mohan Babu, Vemula Venkatramu
Summary: Novel erbium-doped borate-based glasses were synthesized using conventional melt-quenching technique. Structural, vibrational, and spectroscopic properties were characterized. The results showed that these glasses are efficient, thermally stable, and suitable for display devices, optical amplification, and green laser applications.
Article
Optics
S. K. Nayab Rasool, S. K. Shabeena, C. R. Kesavulu, E. Chandra Sekhar, S. Babu
Summary: Neodymium (III) ions doped sodium fluoro-borate (BCNF) glass materials were prepared using the melt quenching method, and Fourier transform infrared (FTIR) and X-ray diffraction (XRD) methods were used to study their structural and functional groups. Spectroscopic properties of the glass were analyzed through absorption, emission, and decay measurements, as well as Judd-Ofelt theory. Three near-IR emission bands were observed under excitation of 808 nm laser diode.
Article
Engineering, Electrical & Electronic
Sk Nayab Rasool, Sk Shabeena, C. R. Kesavulu, S. Babu
Summary: This study investigates the fluorescence properties of samarium (III) ions in fluoro-borate glasses. Various tests including X-ray diffraction, Fourier transform infrared, and UV-Vis-NIR spectroscopy were conducted. The absorption spectra were used to determine the radiative properties of samarium (III) ions, while the emission spectrum was used to calculate the effective bandwidth and empirical branching ratios. The study also proposes the energy transmission mechanism between samarium (III) ions as dipole-dipole interaction.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Sk Nayab Rasool, Sk Shabeena, Nallamala Kiran
Summary: Different concentrations of Pr6O11 doped Sodium lead borophosphate (SLBP) glasses were synthesized and characterized. The properties including thermal behavior, structural information, absorption, emission, and decay curves were studied. The concentration of Pr3+ ions affected the characteristics, and SLBPPr glasses were suitable for visible red luminescence devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
M. S. Sajna, M. S. Sanu, G. Vimal, V. P. Prakashan, P. R. Biju, Cyriac Joseph, V. P. Mahadevan Pillai, N. V. Unnikrishnan
Summary: Glasses containing gold and erbium were prepared and thoroughly analyzed. The study showed that these glasses exhibit plasmonic resonance coupled luminescence enhancement, making them suitable for optical applications such as solid-state lasers and color display devices.
Article
Materials Science, Multidisciplinary
Venkata Surya Bhagavan Netheti, Bungala Chinna Jamalaiah, Shaik Nayab Rasool, Pidaparthy Lalitha Saranya
Summary: The Li6AlGd(1-x)(BO3)(4):xTb(3+) (0 ≤ x ≤ 4.0 mol%) phosphors were synthesized by solid-state reaction process. Structural investigations were carried out using powder X-ray diffraction and Fourier transform infrared techniques. The morphology was examined by high-resolution scanning electron microscope and transmission electron microscope. The temperature-dependent luminescence properties were studied at 378 nm excitation. The suitable excitation wavelength was determined as 378 nm for efficient emission based on the emission spectra analysis.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Analytical
Kiran Nallamala, Nayab Rasool Shaik, Munisudhakar Baddela, Shabeena Shaik, Reddi Babu Midde
Summary: Different concentrations of Sm2O3-doped lead borosilicate glass were synthesized and analyzed in this study. The glass exhibited noncrystalline nature confirmed by XRD patterns. The structural groups in the glass were observed through FTIR spectra. The glass showed potential for visible reddish orange luminescence devices based on the obtained parameters.
Article
Physics, Multidisciplinary
Sunil Thomas, Latifa Aljabri, Mallak Hamaideh, Hessa Alshamsi, Saleh T. Mahmoud, Naser Qamhieh
Summary: This study investigates the electrical properties of selenium thin films synthesized using the thermal evaporation method. It was found that at temperatures above 370 K, the conductance of the film changes with applied voltage in a manner similar to that of a p-n junction.
INDIAN JOURNAL OF PHYSICS
(2021)
Proceedings Paper
Materials Science, Multidisciplinary
Sunil Thomas, Naser Qamhieh, Saleh T. Mahmoud
MATERIALS TODAY-PROCEEDINGS
(2020)
Article
Spectroscopy
Zh. E. Ozbekova, A. A. Abdyldaev, A. A. Kulmyrzaev
Summary: This study compared two drying methods for cow and yak muscles, finding that freeze drying caused less discoloration. Additionally, analysis of fluorescence spectra allowed for accurate prediction of chemical composition and color characteristics of the muscles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Leo Mandic, Ivan Ljubic, Iva Dzeba
Summary: In this study, a combined experimental and computational approach was used to investigate the photoexcitation and photodegradation mechanisms of Doxazosin (DOX). The results provide valuable insights into the primary events following the photoexcitation of DOX and its potential applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiufeng Wang, Yao Jin, Wenhui Ai, Siqi Wang, Zhiqing Zhang, Ting Zhou, Fang Wang, Guodong Zhang
Summary: This study successfully synthesized near infrared fluorescence Ag2S quantum dots (QDs) and developed a dual-mode sensor for sulfide anion using the excellent oxidase-like characteristics of manganese dioxide (MnO2) nanosheets. The sensor showed a wider detection range, higher sensitivity, and shorter reaction time, making it suitable for highly selective detection of sulfide in different concentration ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Pei-Rong Chen, Li-Kang Chu
Summary: In this study, the hydrates of glyoxal were investigated using infrared absorption spectrometry. The results showed that at low concentrations, glyoxal mainly exists as monomeric dihydrate. These findings provide suitable detection windows for further research on the roles of glyoxal and its hydrates in atmospheric and aerosol chemistry, as well as the relevant reaction kinetics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nichole O'Neill, Thamires A. Lima, Fabio Furlan Ferreira, Nicolas J. Alvarez, Reinhard Schweitzer-Stenner
Summary: This study determines the main fibril axis of GHG gel-forming fibrils using various techniques and compares the results with simulated data. The analysis suggests that the hydrophobic xz-surfaces of GHG fibrils could be a good target for the adsorption of hydrophobic drugs.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Mengyuan Liu, Hanchuang Zhu, Yikun Fang, Caiyun Liu, Xinke Li, Xiaohui Zhang, Lixue Ma, Kun Wang, Miaohui Yu, Wenlong Sheng, Baocun Zhu
Summary: ABHS is an efficient fluorescent probe that can accurately and sensitively detect Al3+ with strong resistance to interference. It also demonstrates excellent detection and imaging capabilities in complex real samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmed S. El-Shafie, Evana Rahman, Yasser Gadelhak, Rehab Mahmoud, Marwa El-Azary
Summary: The recycling of waste mandarin peels into biochar (MRBC) has been used as a high performance and cost-effective adsorbent for treating polluted wastewater effluents. Batch adsorption studies were conducted to analyze the adsorption competency of MRBC on two dyes, methylene blue (MB) and basic fuchsin (BF), either in individual solutions or binary combinations. The results showed that MRBC was capable of effectively removing a high percentage of both dyes. However, the adsorption capacity decreased when the dyes were combined. The cost estimation of MRBC production and wastewater treatment indicated that both were relatively low.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yongwei Duan, Quancheng Liu, Yiju Zhu, Qi Zhang, Xiaohui Duan, Hu Deng, Liping Shang
Summary: In this study, the phase transition of CL-20 was observed using terahertz spectroscopy, and quantum chemical calculations were employed to analyze the vibrations. The results indicated changes in the vibrations of CL-20 before and after phase transition.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
