Article
Materials Science, Multidisciplinary
Binbin Xin, Arnaud Le Febvrier, Lei Wang, Niclas Solin, Biplab Paul, Per Eklund
Summary: Highly pure CaxCoO2 thin films were successfully obtained through annealing multilayers, with excellent optical properties and the possibility to increase electrical conductivity by introducing a secondary phase. This study provides a new method for the preparation of solid-state oxide thin films.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Ceramics
Dohyun Go, Jaehyeong Lee, Jeong Woo Shin, Sungje Lee, Wangu Kang, Jeong Hwan Han, Jihwan An
Summary: This study demonstrates a method to achieve localized crystallization of TiO2 thin films through plasma treatment, and modulates the optical and electrical properties by fabricating phase-gradient TiO2 films, optimizing the ratio between amorphous and crystalline layer thicknesses.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Alperen Sezgin, Radim Ctvrtlik, Lukas Vaclavek, Jan Tomastik, Libor Nozka, Ebru Mensur, Seniz Turkuz
Summary: The structural, optical, and mechanical properties of magnetron sputtered TiO2 and TiO2-ZrO2 mixture transparent thin films were investigated, along with the influence of heat treatment. XPS, GI-XRD, and SEM were used to study the structural properties of the films, while spectrophotometry and spectroscopic ellipsometry were employed for optical characterizations. Nano-indentation and nano-scratch tests were used to examine the hardness and scratch behavior. The presence of ZrO2 in TiO2-ZrO2 films enhanced hardness and prevented crystallization of TiO2 after annealing, resulting in better surface quality and higher thermal stability. The addition of ZrO2 also led to a shift in absorption edge and decreased sharpness, leading to less absorption in the visible range.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Habib Chenaina, Charfeddine Messaadi, Jalila Jalali, Hatem Ezzaouia
Summary: This study focuses on sol-gel derived SnO2-TiO2 thin films deposited on silicon wafer type Si (100) substrate using spin coating technique, followed by heat treatments at four different temperatures. XRD characterization reveals the formation of nano-crystalline phase at 400 degrees C and further crystallization with increasing annealing temperature. Optical and dielectric properties analysis demonstrates universal many body response over a broad frequency range, presenting variations in structure and performance of the films.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Huijuan Dong, Bingcheng Luo, Kexin Jin
Summary: The influence of sodium deviation on the structural and electrical properties of sol-gel-derived NaNbO3 thin films was investigated. It was found that sodium deviation had little effect on the crystalline structure, but was closely related to the dielectric, leakage current, and energy-storage properties. Excess sodium improved the leakage current and dielectric loss, while sodium deficiency resulted in larger polarization and superior energy storage density.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Jun Li, Xin-Gui Tang, Qiu-Xiang Liu, Yan-Ping Jiang, Wen-Hua Li
Summary: This study successfully fabricated TiO2-SrTiO3 composite oxide thin films via sol-gel method and investigated their crystal phase, surface morphology, and chemical compositions through various characterizations. The results show that the composite oxide exhibits enhanced photoelectric properties, with the photoluminescence spectrum closely related to charge carrier trapping information. Additionally, first-principle calculations based on DFT provided insights into the energy band and state density of the composite oxide, deepening understanding of its photoelectric properties and electron structure for potential optoelectronic device applications.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Physical
Beya Ouertani, Habib Boughzala, Bertrand Theys, Hatem Ezzaouia
Summary: The incorporation of ruthenium into FeSe2 thin films has shown significant improvement in optical and electrical properties, making them promising for photovoltaic applications. The alloyed films exhibited N-type conductivity with high absorption coefficients and desired band gap values. The use of ruthenium as an alloying agent in FeSe2 thin films shows potential for various applications, especially in the field of photovoltaics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Er Irmak Karaduman, Samet Uysal, Aytunc Ates, Selim Acar
Summary: Thin film technology involves processing, structure, properties, performance, and characterization, with processing parameters being especially important and affecting other steps. This study focuses on analyzing the effects of processing parameters on the properties of TiO2 thin films grown using sol-gel dip-coating method. It was found that the dipping time and aging significantly influenced the morphological, structural, and optical properties of the thin films, providing important insights for understanding their performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Taoufik Dib, Boubekeur Birouk
Summary: In this article, an unprecedented contactless method based on spectroscopic ellipsometry technique was developed to extract the optoelectrical properties of thin films. The empirical relations (linear and polynomial) were extracted from the extremal values of the psi ellipsometric angle spectrum to determine the optoelectrical properties of AZO thin films. Furthermore, a relationship related to psi was established to estimate the oxygen concentration inside the depositing chamber. The accuracy of the equations was evaluated to ensure correct predictions for the effectiveness of this contactless method.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Paul Schmitt, Vivek Beladiya, Nadja Felde, Pallabi Paul, Felix Otto, Torsten Fritz, Andreas Tuennermann, Adriana V. Szeghalmi
Summary: The study evaluates the influence of various substrate materials on the properties of ALD iridium thin films, finding that while iridium islands occur on all substrates, their size, shape, and distribution depend on the substrate material. As the number of ALD cycles increases, different growth regimes of iridium on different substrates are distinguishable.
Article
Materials Science, Ceramics
Fanzheng Meng, Yingqi Chen, Guoxiang Wang, Andriy Lotnyk
Summary: This work focuses on the fabrication and thermoelectric properties of Sb-GeO2 and Sb-TiO2 nanocomposite thin films. In the Sb-GeO2 nanocomposite, large rhombohedral Sb grains are formed, contributing to conductivity elevation but reducing Seebeck coefficient and power factor. In contrast, effective inhibition of Sb crystallization caused by TiO2 results in smaller and more homogeneous distribution of Sb grains in the annealed Sb-TiO2 thin film, leading to excellent thermoelectric properties.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Shih-Hung Lin, Rong-Hwei Yeh, Chen Chu, Ruei-Sung Yu
Summary: In this study, Mg-doped CuCrO2 thin films were investigated, showing that increasing Mg content led to decreased roughness, increased visible light transmittance, enhanced UV light absorption, and increased band gap of CuCrO2, resulting in significantly improved electrical conductivity. Mg doping effectively increased carrier concentration by replacing Cr3+ with Mg2+, making Mg-doped CuCrO2 a promising optoelectronic semiconductor material.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
A. Bute, S. Jena, R. K. Sharma, Jagannath, D. V. Udupa, N. Maiti
Summary: The structure and optical properties of boron carbide films deposited by PECVD can be modified by post-deposition vacuum annealing and plasma treatment. Vacuum annealing reduces energy loss in the film, while plasma treatment slightly affects the bandgap and refractive index of the film.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Vincenzo Balzano, Emanuele Cavaliere, Mattia Fanetti, Sandra Gardonio, Luca Gavioli
Summary: The study highlights the significant role of the substrate in determining the behavior of nanogranular thin films during annealing, with different substrates leading to distinct evolution of film morphology and optical properties.
Article
Engineering, Electrical & Electronic
Daniel A. Fentahun, Alekha Tyagi, Sugandha Singh, Prerna Sinha, Amodini Mishra, Somnath Danayak, Rajesh Kumar, Kamal K. Kar
Summary: The deposition temperature plays a critical role in determining the quality and properties of Cu2O thin films, with 60 degrees Celsius identified as the optimum temperature. Studies show that the films deposited at this temperature exhibit significant changes in optical, electrical, and structural properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
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)