Article
Materials Science, Ceramics
Shipra Choudhary, Manisha Sharma, Venkata Krishnan, Satyabrata Mohapatra
Summary: This study successfully prepared magnetically separable CoFe2O4-ZnO hybrid nanostructures and characterized their structure and morphology using various techniques. CoFe2O4-ZnO exhibited significantly enhanced photocatalytic performance compared to pristine CoFe2O4 due to its high light utilization ability and heterojunction formation that delayed charge carrier recombination. The study provides an efficient solution for sunlight-responsive magnetically separable CoFe2O4-ZnO photocatalyst in wastewater purification.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Zepeng Wang, Zhaolong Ge, Ruihui Li, Zhe Zhou, Yudong Hou, Hui Zhang
Summary: The chemical structure of coal has a significant impact on coalbed methane mining. The study found that the functional groups of coal decrease by approximately 30% with increasing temperature. VES fracturing fluids can destroy the functional groups of coal, with high temperature and pressure weakening their destructive impact, while deionized water enhances the destruction. The coupling effect of high temperature and VES fracturing fluid makes the macromolecular structure of coal more ordered.
Article
Multidisciplinary Sciences
Andreij C. Gadelha, Douglas A. A. Ohlberg, Cassiano Rabelo, Eliel G. S. Neto, Thiago L. Vasconcelos, Joao L. Campos, Jessica S. Lemos, Vinicius Ornelas, Daniel Miranda, Rafael Nadas, Fabiano C. Santana, Kenji Watanabe, Takashi Taniguchi, Benoit van Troeye, Michael Lamparski, Vincent Meunier, Viet-Hung Nguyen, Dawid Paszko, Jean-Christophe Charlier, Leonardo C. Campos, Luiz G. Cancado, Gilberto Medeiros-Ribeiro, Ado Jorio
Summary: The twisted bilayer graphene undergoes self-organized lattice reconstruction, resulting in the formation of a superlattice that modulates vibrational and electronic structures, leading to phenomena such as strong correlations and superconductivity. Although experimental techniques and theoretical models face challenges in observing and describing these effects, nano-Raman spectroscopy can localize some vibrational modes and provide insights into the effects of electron-phonon coupling on the material properties.
Article
Chemistry, Physical
Jianping Peng, Peijiang Liu, Yutong Chen, Zi-Hao Guo, Yanhui Liu, Kan Yue
Summary: This study fabricated a surface-enhanced Raman scattering (SERS) substrate with ultrahigh sensitivity and stability using a simple and robust method. The substrate, composed of densely packed and uniformly distributed gold nanoparticles (Au NPs), exhibited a strong SERS effect. It achieved an ultra-low limit of detection for 4-AMTP molecules and demonstrated high sensitivity and reliability for detecting other molecules as well. Finite difference time domain simulations confirmed the experimental observations. The gold plasmonic nanostructures also showed good shelf stability, indicating potential for practical applications.
Article
Chemistry, Multidisciplinary
Yanjun Yang, Chunyuan Song, Jingjing Zhang, Jie Chao, Hoang Mai Luong, Yiping Zhao, Lianhui Wang
Summary: This article introduces a surface-enhanced Raman scattering (SERS) sensor based on a functionalized multiple-armed tetrahedral DNA nanostructure, which is capable of detecting multiple nucleic acid and protein biomarkers related to lung cancer and has enhanced sensitivity. The sensor achieves enhanced Raman signals through DNA self-assembled gold nanoparticle clusters in multiplex detections.
Article
Materials Science, Multidisciplinary
A. R. Zanatta, F. Cemin, F. G. Echeverrigaray, F. Alvarez
Summary: This paper investigates the physico-chemical properties of titanium oxynitride films using Raman scattering and X-ray photoelectron spectroscopy, showing that these techniques can effectively characterize the structure and oxidation state of the films. The experimental data indicate a proportional relationship between the TiO2 and TiN-related phonon modes and the oxygen and nitrogen contents of the films, as well as a variation in the chemical oxidation states.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Nanoscience & Nanotechnology
Sawsan Almohammed, Agata Fularz, Mohammed Benali Kanoun, Souraya Goumri-Said, Abdullah Aljaafari, Brian J. Rodriguez, James H. Rice
Summary: Semiconducting materials are proposed as alternatives to noble metal nanomaterials to enhance Raman scattering. Bioinspired semiconducting diphenylalanine peptide nanotubes annealed through a structural transition were demonstrated to support Raman detection of molecules, including mononucleotides, at concentrations as low as 10(-7) M. The enhancement is achieved by introducing electronic states below the conduction band to facilitate charge transfer to the analyte molecule. This study shows that organic semiconductor-based materials can serve as platforms for enhanced Raman scattering for chemical sensing, without the need for electromagnetic surface-enhanced Raman spectroscopy.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Optics
Moram Sree Satya Bharati, Venugopal Rao Soma
Summary: Flexible substrates used as SERS platforms for detecting hazardous materials offer advantages of low cost and easy sampling, making them potentially valuable for trace detection of hazardous materials.
OPTO-ELECTRONIC ADVANCES
(2021)
Article
Chemistry, Applied
Victoria Beltran, Andrea Marchetti, Steven De Meyer, Gert Nuyts, Karolien De Wael
Summary: This study thoroughly investigates the structure and composition of eosin Y complexes with aluminum and lead, with a focus on the impact of synthesis conditions. The results show a change in the coordination mode of lead complexes depending on the synthesis protocol, while the structure of aluminum complexes remains stable. By-products were also observed in both cases.
Article
Chemistry, Physical
Yunrui Han, Yingkuan Han, Qihang He, Hong Liu, Yu Zhang, Lin Han
Summary: This study successfully fabricated an AgNPs@ LIG SERS chip with excellent sensitivity and uniformity, which realized large-scale production with controllable shape and area. The chip features a limit of detection (LOD) of 10-14 M, an enhancement factor (EF) of 3 x 1010, and fine uniformity. Furthermore, the chip was applied to the detection of melamine and showed potential application value for pollutant analysis. The preparation of the composite SERS chip is simple for mass production, providing great potential for the development of ultrasensitive SERS biosensors for various biological and chemical analyses.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Yuduo Guan, Bin Ai, Zengyao Wang, Chong Chen, Wei Zhang, Yu Wang, Gang Zhang
Summary: Plasmonic nanochemistry is utilized to develop a chemical patterning technique for multiscale distributed plasmonic nanoparticle arrays, allowing for precise control and application in various fields.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Meenu Sharma, Sonam Rani, Devesh K. Pathak, Ravi Bhatia, Rajesh Kumar, I Sameera
Summary: A temperature dependent Raman spectromicroscopic study was conducted on multiwall carbon nanotubes to investigate anharmonic effects, revealing non-linear shifts in the peak position of Raman D- and G-bands with temperature. Phonon softening and hardening of Raman modes were observed over a wide temperature range, with the G-peak shift explained by anharmonic properties of the graphite lattice. The width variation of the G-peak appeared to be nearly independent of temperature due to competing effects from electron-phonon coupling and anharmonic contributions.
Article
Materials Science, Multidisciplinary
Sung-Hyun Kim, Ha Young Lee, Jae-Hoon Ryu, Jeong-Yeon Lee, Han-Sol Kim, Hyung Soo Ahn, Dong Han Ha, Sam Nyung Yi
Summary: This study aimed to enhance surface plasmon resonance by combining Ag nanoparticles and an asymmetric crater structure. The results showed that the Raman intensity inside the crater with Ag nanoparticles and nanowires was 22 times higher compared to a flat area without nanoparticles. However, an increase in the amount of nanowires led to a decrease in Raman intensity.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Amit Pawbake, Thomas Pelini, Alex Delhomme, Davide Romanin, Diana Vaclavkova, Gerard Martinez, Matteo Calandra, Marie-Aude Measson, Martin Veis, Marek Potemski, Milan Orlita, Clement Faugeras
Summary: Magnetic layered materials have shown potential in introducing magnetism in two-dimensional structures. This study successfully manipulated the magnon-phonon resonance by applying high hydrostatic pressures and high magnetic fields, leading to the formation of magnon-polarons.
Article
Chemistry, Physical
Shengsen Zhang, Shengjie Chen, Kunru Yu, Rong Zhu
Summary: This study proposes a novel nanofabrication approach to construct morphology-controlled gold nanostructures for high-performance sensing and energy harvesting. The gold nanostructures are synthesized through electric field-assisted hydrothermal growth and two-step gold electroplating, and their morphology can be controlled by regulating electroplating parameters. The synthesized gold nanostructures exhibit enhanced electrochemical sensing, surface-enhanced Raman scattering, and visible-near-infrared light harvesting. For the first time, the study demonstrates the application of tumor cell photothermal therapy with nanostructured electrodes and in situ bimodal monitoring of single-cell electrophysiology and molecular expression.
Article
Materials Science, Multidisciplinary
Madeeha Riaz, Manahil Najam, Hina Imtiaz, Farooq Bashir, Tousif Hussain
Summary: This study focuses on the structural and biological analysis of Zn-Cu based biodegradable alloys for orthopedic applications. The results indicate that the alloys have good electrical conductivity and biocompatibility, with potential for promoting bone growth and healing process. Additionally, the alloys exhibit a low corrosion rate and improved corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rijo Rajeev, Sk Safikul Islam, Anitha Varghese, Gurumurthy Hegde, Suryasarathi Bose
Summary: In this study, a facile and selective electrochemical sensor was developed for the sensing of guanosine. The sensor utilized a unique porous structure and ordered framework, enabling linear detection of guanosine concentration in the range of 0.123-720 μM under specific conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rafael V. M. Freire, Dominique Celeste de A. Dias, Jose Yago Rodrigues Silva, Dayane Kelly Dias do Nascimento Santos, Larissa T. Jesus, Ricardo O. Freire, Severino A. Junior
Summary: This study reports the extraction and isolation of euphol from nature, its adsorption in nanosized ZIF-8, and the efficacy of this system against cancer cells. Experimental and simulation results show that ZIF-8 can enhance the effectiveness of euphol against cancer cells and selectively target cancer cells.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Manal A. Awad, Awatif A. Hendi, Maha M. Almoneef, Maymunah Alwehaibi, Khalid M. Ortashi, Wadha Alenazi, Fatimah S. Alfaifi, Shareefa Alahmariye, Asma Alangery, Warda Ali Alghoubiri, Haia Aldosari
Summary: In this study, magnesium-doped zinc oxide nanoparticles were synthesized and characterized. The research findings show that magnesium doping can alter the crystal structure and optical properties of zinc oxide, while enhancing its dielectric constant.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
F. J. Willars-Rodriguez, I. R. Chaverz-Urbiola, M. A. Hernandez-Landaverde, A. Zavala-Franco, E. A. Chavez-Urbiola, P. Vorobiev, Yu V. Vorobiev
Summary: This study focuses on manganese doped CdS thin films synthesized by chemical bath deposition. The incorporation of Mn2+ cations in CdS was found to influence the crystalline structure, morphology, and optoelectronic properties. Doped thin films exhibited a uniform hexagonal structure, changed growth orientation, and showed scale-like and needle-like morphologies. The bandgap and rectification speed of Schottky diodes were modified by introducing manganese. This study suggests the potential for affordable high-speed optoelectronic devices.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Mehdi Javidi, Hooman Karimi Abadeh, Fatemeh Namazi, Hamid Reza Yazdanpanah, Narjes Shirvani Shiri
Summary: This study investigated the synergistic effect of temperature, solution velocity, and sulphuric acid concentration on the corrosion behavior of carbon steel using response surface methodology. The results showed that temperature affected anodic reactions, solution velocity influenced cathodic reactions, and acid concentration altered the corrosion mechanisms by changing the properties of the surface layer.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
R. Sakthivel, Thirumoorthy Kulandaivel, Kirankumar Venkatesan Savunthari, K. Mohanraj, Hans-Uwe Dahms, Aswin kumar Anbalagan, Manjunath Rangasamy, Kien-Voon Kong
Summary: In this study, saturated fatty acids were incorporated with silane to modify viscose fabric, resulting in superhydrophobic and superoleophilic properties. The modified fabric showed excellent separation efficiency for oil and organic solvents, with high absorption capacity. The modified fabric also exhibited durability and retained its properties in harsh conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Wei Zhang, Hong Lei, Wenqing Liu, Zefang Zhang, Yi Chen, Xiaogang Hu, Xiangshan Ye
Summary: In this study, EDTA-grafted alumina composite abrasives were produced by a two-step process for the CMP of sapphire substrates. Experimental results showed that the modified abrasives exhibited better dispersion properties and significantly improved polishing efficiency, with higher material removal rates and lower surface roughness. The combination of chemical reaction and mechanical action enhanced the CMP performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Shumaila Rafaqat, Bushra Perveen, Warda Raqba, Warda Imran, Arshad Hussain, Naeem Ali
Summary: This study developed a MnP-based biosensor for quantitative measurement of dye concentrations using electrochemical signals. The effects of two different dyes on MnP activity were investigated, with one dye showing inhibitory effects and the other dye having no effect. The study demonstrates the potential application of enzyme-based biosensors in dye detection and toxicological monitoring.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinyan Shi, Oguzhan Yavuz Bayraktar, Baris Bayrak, Burak Bodur, Ali Oz, Gokhan Kaplan, Abdulkadir Cuneyt Aydin
Summary: The elemental composition of precursors is crucial for the performance development of geopolymers. The use of lime instead of metakaolin increases the fluidity and mechanical properties of geopolymers, while the addition of gypsum decreases them. Furthermore, higher lime content exacerbates the negative effect of gypsum.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aayush Gupta, Kaveri Ajravat, Loveleen K. Brar, O. P. Pandey, Pandey Rajagopalan
Summary: This study focuses on the performance of Mn3O4-ZnO composite material in wastewater treatment and energy storage applications, and presents a detailed comparative analysis. Results show that the composite material with equal concentrations of Mn3O4 and ZnO exhibits excellent photocatalytic activity and high capacitance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
V. Murugabalaji, Matruprasad Rout, Harsh Soni, Biranchi Narayan Sahoo
Summary: This study focuses on the corrosion characteristics of AA 7075 and AA 7075 based hybrid composite fabricated using stir casting and hot rolling techniques. The results show that the hybrid composite produced by hot cross rolling exhibits better corrosion resistance compared to the base metal. The addition of a small amount of graphite improves the bonding between the matrix and reinforcements, and the hot cross rolling enhances this bonding, leading to the formation of a strong passivation oxide layer and increased charge transfer resistance, thereby improving corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Fangkun Ning, Qinghao Shi, Shuping Kong, Weitao Jia, Lifeng Ma
Summary: The paper investigates a new method of rolling sheets with variable chamfering amounts in both the transversal and normal directions. The feasibility of the technological process was tested through simulation and compared with experimental results. Three important process parameters, temperature, stress, and flow velocity, were used to evaluate the effects on chamfering amount before determining the optimal angle. The spread formula for evaluating the shape quality of the plate after ECR was obtained through testing and theory.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aqeel Abbas, M. A. Hussein, Mohamed Javid
Summary: In this study, the AM60 magnesium alloy was processed using high-energy ball milling, and the results showed that different reinforcement agents had certain effects on particle size, crystallite size, lattice strain, and dislocation density.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
D. S. Mahmoud, E. M. Eldesouki, W. M. Abd El-Gawad
Summary: The development of flexible and lightweight microwave-absorbing materials has become a trendy topic. This study focuses on enhancing the microwave-absorbing performance of butadiene-acrylonitrile rubber (NBR) by incorporating novel reinforcing nanofillers. The results show that the NBR nanocomposite with a loading of 16 parts per hundred rubber (phr) of LiFe 20%/Si has the best microwave-absorbing performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)