Article
Materials Science, Multidisciplinary
I. Guler, M. Isik, N. Gasanly
Summary: The optical properties of TlIn(S0.25Se0.75)(2) crystals were investigated using ellipsometry measurements. The crystal exhibited well-defined peaks in the X-ray diffraction pattern, indicating a monoclinic structure. Energy dependence of various linear optical parameters in the range of 1.25-4.50 eV were analyzed. The compound's band gap and Urbach energies were determined to be 1.96 and 0.68 eV, respectively, through analysis of the absorption coefficient. The refractive index spectrum was analyzed using the single-effective-oscillator model to obtain oscillator and dispersion energies, dielectric constants, and plasma frequency. Additionally, the present study revealed the nonlinear refractive index, first-order, and third-order nonlinear susceptibilities of the TlIn(S0.25Se0.75)(2) crystal.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Ceramics
Dipankar Biswas, Rittwick Mondal, Debabrata Mandal, Sonjoy Mondal
Summary: The Bi-incorporated As45-Se(55-x)-Bix (x = 0, 2, 4, 6 at.%) chalcogenide glasses were synthesized using the conventional melt quenching method. X-ray diffraction confirmed their amorphous nature. The variation in linear and non-linear optical properties was investigated from UV-Vis spectroscopy data. The optical band gap energies decreased from 1.82 eV to 1.59 eV with Bi addition, and the Urbach energies increased from 0.048 eV to 0.056 eV. Various optical parameters were analyzed within the range of 300-800 nm, indicating the potential use of these materials in optical devices.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Optics
Yingluo Zhang, Qian Cheng, Yike Zhang, F. Han
Summary: This paper combines the polarization bidirectional reflection distribution function theory with microfacet theory and uses Monte Carlo method to establish an underwater laser active-polarization imaging model based on Mie scattering theory. The model can simulate imaging of an underwater target with a high degree of polarization, and demonstrates the effects of optical thickness and target surface roughness on the imaging results. Additionally, the paper presents an algorithm that globally estimates the mutual information value between the target polarization degree and the correction factor of backscattered light polarization degree, using histogram equalization and the traditional polarization differential imaging algorithm. The algorithm is able to restore the highly polarized target image to some extent, as shown by the simulation results. Finally, the experimental verification confirms the correctness of the imaging model and the feasibility of the global estimation algorithm based on polarization differential restoration.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2022)
Article
Materials Science, Multidisciplinary
Arun Kumar, Sonia Rani, Dhriti Sundar Ghosh
Summary: This study measured the optical constants of methylammonium lead iodide thin films on different underlying layers and analyzed the performance of devices using these films. The results showed that there was an error of approximately 10.6% when using the optical constants taken from films on different underlying layers.
Article
Materials Science, Multidisciplinary
M. Karyaoui, D. Ben Jemia, M. Daoudi, A. Bardaoui, A. Boukhachem, M. Amlouk, R. Chtourou
Summary: This paper investigates the physical properties of graphene oxide-doped zinc oxide thin films, finding that 2% GO doping demonstrates the best optoelectrical properties and has potential for future optoelectronic applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Optics
Tao Cheng, Tianhao Fei, Wenjie Zhang, Jia-Yue Yang, Linhua Liu
Summary: This study investigates the temperature-dependent dielectric functions of GaN through experiments and calculations, identifying absorption peaks from excitonic and phonon-assisted indirect absorption processes. The research explores the impact of temperature and doping on the optical characteristics of GaN, aiming to advance its application in high-power electronic devices.
Article
Chemistry, Physical
Rehab Ramadan, Raul J. Martin-Palma
Summary: The precise knowledge of the optical constants (n and k) of nanostructured porous silicon (nanoPS) is essential for predicting the behavior of optical and photonic devices based on this material. A simulation computational program based on the matrix method was used to determine the optical constants of self-standing nanoPS films in the visible range using experimental reflectance and transmittance spectra. Additionally, the spectral absorption coefficient (alpha) and the type of bandgap (direct or indirect) for different porosities were determined based on the spectral k values.
Article
Materials Science, Multidisciplinary
L. Oulmaati, K. Bouziane, A. Bouajaj, M. R. Britel, F. Enrichi, C. Armellini, A. Chiappini, M. Maaza
Summary: The optical properties of Tb3+/Yb3+ co-doped 70SiO2 - 30HfO2 glass and glass-ceramic thin films prepared by dip coating were investigated using transmittance measurements. It was found that increasing the concentration of rare earth ions led to a slight increase in refractive index and thickness variation. The energy bandgap was around 3 eV, with a slightly higher bandgap for glass films compared to glass-ceramic films.
Article
Instruments & Instrumentation
Gilles Fortin
Summary: An alternative method to calculate the optical constants n and k is presented in this paper, which utilizes both ellipsometric measurements and s-polarized specular reflectance measurements. This method is applicable to bulk samples with either smooth or rough surfaces, providing spectral optical constants consistent with s-polarized reflectance measurements.
APPLIED SPECTROSCOPY
(2021)
Article
Physics, Applied
A. Ben Ahmed, M. Benhaliliba
Summary: This study investigates zinc oxide using computational and experimental methods. Pure and indium-doped ZnO thin films were produced by spray pyrolysis. The films have a polycrystalline structure with smaller grain size in nanometric scale. The transparency of the films is high despite the indium insertion, although it slightly decreases. The UV-visible absorption band shifts from 360nm to 448nm as a result of indium doping, and the HOMO and LUMO diagrams demonstrate a drop in energy E due to doping.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Materials Science, Multidisciplinary
Akshayakumar Kompa, B. Lalitha Devi, U. Chaitra
Summary: Thin films of zinc oxide (ZnO) were coated on glass substrates using a spin coater and annealed at different temperatures in a reduced atmosphere. The structural properties of the films were analyzed using XRD and AFM, and the optical properties were studied using UV-Vis spectrophotometer. The results showed preferred orientation towards the c-axis and columnar growth in the films. Various optical parameters such as band gap, Urbach energy, refractive index, and carrier concentration were determined. Non-linear optical parameters were obtained using Miller's generalized rules. The band gap was found to decrease with dopant concentration and annealing temperature, except for a slight increase at 300°C. The Urbach energy increased with both dopant concentration and annealing temperature, indicating the presence of defect sites in the material.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
A. A. Ahmad, A. B. Migdadi, A. M. Alsaad, Qais M. Al-Bataineh, Ahmad Telfah
Summary: A well-prepared ZnO and (Cd-Ni) co-doped ZnO thin films were synthesized using sol-gel method, with optical, structural, and morphological characterizations performed to analyze the impact of co-doping ratio on transmittance and reflectance.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Optics
Z. A. Alrowaili, T. A. Taha, M. Ibrahim, K. M. A. Saron, Chahkrit Sriwunkum, Ateyyah M. Al-Baradi, M. S. Al-Buriahi
Summary: A new glass system based on (55-x) B2O3-x Ag3PO4-45 ZnO-5 Na2O was synthesized and characterized in this study. It was found that increasing Ag3PO4 content led to a decrease in energy band gap and a red shift in the UV-IR spectrum. Additionally, the neutron shielding ability of the glass decreased with higher Ag3PO4 concentrations.
Article
Chemistry, Inorganic & Nuclear
Dilawar Ali, Nabtahel Arooj, Iqra Muneer, Farooq Bashir, Muhammad Hanif, Shaista Ali
Summary: Zinc oxide nanoparticles with antibacterial and photocatalytic properties were successfully synthesized using an aqueous extract derived from Psathyrella candolleana mushrooms.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
R. Umamaheswara Singh, K. Chandra Sekhar, Jamila S. Alzahrani, Z. A. Alrowaili, Md. Shareefuddin, Y. Purushotham, I. O. Olarinoye, M. S. Al-Buriahi
Summary: The study focuses on the physical and structural aspects of B2O3-CdO-ZnO-Na2O glasses reinforced by MoO3 ions. The amorphous nature of the samples was confirmed by the absence of strong peaks in the XRD spectra. Optical, Raman, and radiation-shielding qualities were evaluated and described. Structural changes were investigated using FTIR and Raman spectra. The density of the samples increased with the addition of MoO3, and the band gap decreased due to the transition of Mo6+ to Mo5+ ions. The glasses showed potential as environmentally friendly and transparent radiation barriers in nuclear facilities.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Ali Rafiei Miandashti, Larousse Khosravi Khorashad, Alexander O. Govorov, Martin E. Kordesch, Hugh H. Richardson
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Nanoscience & Nanotechnology
Juvinch R. Vicente, Ali Rafiei Miandashti, Kurt Waldo E. Sy Piecco, Joseph R. Pyle, Martin E. Kordesch, Jixin Chen
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Physical
Heesoo Park, Raghvendra Mall, Fahhad H. Alharbi, Stefano Sanvito, Nouar Tabet, Halima Bensmail, Fedwa El-Mellouhi
JOURNAL OF PHYSICAL CHEMISTRY A
(2019)
Article
Chemistry, Multidisciplinary
Ali Rafiei Miandashti, Larousse Khosravi Khorashad, Martin E. Kordesch, Alexander O. Govorov, Hugh H. Richardson
Article
Chemistry, Physical
Annik Bernhardt, Tharushi D. Ambagaspitiya, Martin E. Kordesch, Katherine Leslee A. Cimatu, Jixin Chen
Summary: Methylammonium lead iodide bromides are a class of mixed halide lead perovskite materials with tunable bandgap and high-power conversion efficiencies. However, their use in solar cells is limited due to factors such as phase segregation and complex kinetics.
Article
Materials Science, Multidisciplinary
Faiz Rahman, Md Mahmudul Hasan, Martin E. Kordesch
Summary: Thermal oxidation of copper produces a layer of copper oxides. The surface of this thermal oxide naturally has an involuted morphology that can trap a very significant amount of incident radiation (similar to 70-90%). This phenomenon is of particular interest at near-infrared and visible wavelengths where the oxide shows band gap absorption.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Nanoscience & Nanotechnology
Meiying Liang, Adnan Ali, Abdelhak Belaidi, Mohammad Istiaque Hossain, Oskar Ronan, Clive Downing, Nouar Tabet, Stefano Sanvito, Fedwa EI-Mellouhi, Valeria Nicolosi
NPJ 2D MATERIALS AND APPLICATIONS
(2020)
Article
Engineering, Electrical & Electronic
Michael V. Mroz, Martin E. Kordesch, Jerzy T. Sadowski, Samuel A. Tenney, Calley N. Eads
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2020)
Article
Mathematical & Computational Biology
S. A. Knavel, T. V. Savina, M. V. Mroz, M. E. Kordesch, C. N. Eads, J. T. Sadowski, S. A. Tenney
MATHEMATICAL MODELLING OF NATURAL PHENOMENA
(2020)
Article
Engineering, Electrical & Electronic
Kurt Waldo E. Sy Piecco, Juvinch R. Vicente, Joseph R. Pyle, David C. Ingram, Martin E. Kordesch, Jixin Chen
ACS APPLIED ELECTRONIC MATERIALS
(2019)
Article
Chemistry, Physical
Maulid M. Kivambe, Jan Haschke, Jorg Horzel, Brahim Aissa, Amir A. Abdallah, Abdelhak Belaidi, Raphael Monnard, Loris Barraud, Antoine Descoeudres, Fabien Debrot, Matthieu Despeisse, Mathieu Boccard, Christophe Ballif, Nouar Tabet
ACS APPLIED ENERGY MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Fedwa El-Mellouhi, Sergey N. Rashkeev, Asma Marzouk, Lara Kabalan, Abdelhak Belaidi, Belabbes Merzougui, Nouar Tabet, Fahhad H. Alharbi
JOURNAL OF MATERIALS CHEMISTRY C
(2019)
Correction
Chemistry, Physical
Heesoo Park, Raghvendra Mall, Fahhad H. Alharbi, Stefano Sanvito, Nouar Tabet, Halima Bensmail, Fedwa El-Mellouhi
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Article
Engineering, Electrical & Electronic
Michael V. Mroz, Tatiana Savina, Martin E. Kordesch, Jerzy T. Sadowski, Samuel A. Tenney
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2019)
Article
Chemistry, Physical
Heesoo Park, Raghvendra Mall, Fahhad H. Alharbi, Stefano Sanvito, Nouar Tabet, Halima Bensmail, Fedwa El-Mellouhi
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)