Article
Chemistry, Multidisciplinary
Yanling Qi, Yuanyuan Li, Wei Wang
Summary: The investigation of the electrochemical reduction processes of Cu(II) and Se(IV) in solutions with poly(ethylene glycol) (PEG) provides important guidance for the preparation of Cu-Se alloy films with enhanced thermoelectric properties. PEG does not affect the reduction mechanisms but inhibits the reduction rates. The Cu-Se alloy film prepared under specific conditions exhibits strong thermoelectric properties.
Article
Chemistry, Physical
Guipeng Li, Guihong Song, Nan Wang, Fang Hu, Yusheng Wu, Hao Du, Junhua Yuo
Summary: In this study, p-type Cu-Se films with different Cu contents were prepared and their phase composition was systematically studied. The results showed that the phase composition of the films changed with increasing Cu content. Furthermore, the carrier concentration and mobility exhibited opposite trends at room temperature, while the Seebeck coefficient and power factor showed different variations depending on the phase composition.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Nan Wang, Guihong Song, Guipeng Li, Yusheng Wu, Junhua You
Summary: The Mn-doped beta-Cu2Se films deposited on a single-crystalline Si substrate exhibit excellent thermoelectric properties, with the resistivity and Seebeck coefficient increasing, carrier concentration decreasing, and carrier mobility increasing with increasing Mn content. The film with 1.94 at.% Mn shows the highest power factor and a figure of merit (ZT) of 0.85 at room temperature, demonstrating the potential to improve the thermoelectric properties of beta-Cu2Se films by doping Mn and obtaining a highly preferred orientation.
Review
Chemistry, Multidisciplinary
Longhui Deng, Yanrui Liu, Yingyao Zhang, Suhao Wang, Peng Gao
Summary: The article summarizes the basic principles of organic thermoelectric materials, reviews recent progress, and discusses the relationship between structure and properties in high-performance organic thermoelectric materials. The article also explores the important influence of various components in molecular structure on thermoelectric properties and envisions future research directions for organic thermoelectric materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
A. M. Adam, E. M. M. Ibrahim, Anshu Panbude, K. Jayabal, Pandiyarasan Veluswamy, A. K. Diab
Summary: Stoichiometric Pb1-xGexTe crystalline alloys were synthesized and their crystal structure and thermoelectric properties were investigated. Highly Ge-doped samples exhibited the highest thermoelectric power factor at high temperatures. A noticeable reduction in electronic thermal conductivity due to Ge doping was observed, which could lead to a considerable enhancement in the thermoelectric figure of merit.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
D. Zhao, Q. Jiang, Y. Jia, J. Zhou, N. Zheng, D. Hu, Y. Ma
Summary: This study demonstrates the use of phenyl lithium doping to create a suspension mixed with unsubstituted NDI, which can be drop-cast to prepare dense films for TE applications. By optimizing the doping ratio, impressive electrical conductivity and Seebeck coefficient were achieved in the TE film.
MATERIALS TODAY ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Zhicheng Jin, Tao Mao, Pengfei Qiu, Zhongmou Yue, Lei Wang, Kunpeng Zhao, Dudi Ren, Xun Shi, Lidong Chen
Summary: Silver-containing Cu2Se samples were synthesized and studied to explore their thermoelectric properties and service stability. The introduction of silver in Cu2Se was found to significantly impact thermoelectric properties but have little influence on stability. Electrical conductivity was proposed as a simple indicator to predict the stability and thermoelectric performance of Cu2Se-based materials, with recommendations for leg geometry to fabricate stable and efficient Cu1.97Ag0.03Se-based thermoelectric modules.
MATERIALS TODAY PHYSICS
(2021)
Review
Polymer Science
Suhao Wang, Guangzheng Zuo, Jongho Kim, Henning Sirringhaus
Summary: Thanks to the combined efforts of scientists in various research fields, there have been significant advancements in the past decade in the application of conjugated polymers as thermoelectric materials. However, there is a lack of systematic evaluations on the impact of molecular design on thermoelectric properties. A comprehensive understanding of the relationship between molecular structure and thermoelectric properties will facilitate the rational design of next-generation thermoelectric polymers.
PROGRESS IN POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Andriy Nadtochiy, Viktor Kozachenko, Oleg Korotchenkov, Viktor Schlosser
Summary: In this study, nickel films with nanovoids filled with fullerene molecules were successfully fabricated, which exhibited special thermoelectric properties. It was found that phonon scattering at the C-60/matrix heterointerface can be enhanced. The distribution of atoms and morphology of the materials were characterized by Auger depth profiling and scanning electron microscopy (SEM). Measurements showed that nanostructuring using Ar+ ion treatment increased the thermopower magnitude over the entire temperature range.
Article
Chemistry, Physical
V Shalini, S. Harish, J. Archana, H. Ikeda, M. Navaneethan
Summary: This study successfully synthesized Bi2Te3 nanostructures and applied them to carbon and nickel-copper fabrics to form TE legs, driving wearable thermoelectric devices. The Ni-Cu fabric coated with Bi2Te3 demonstrated higher electrical conductivity and Seebeck coefficient, resulting in higher output voltage. Analysis showed that environmental temperatures below 300K and above 293K are more suitable for energy harvesting from the human body.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Sajid Sumayya, Sajid Butt, Muhammad Umer Farooq, Muhammad Abdul Basit, Usman Ali, Muhammad Aftab Akram
Summary: In this study, a facile spin coating method was used to fabricate multilayers of Cu2Se and PEDOT:PSS for flexible thermoelectric devices. The investigation revealed that the organic-inorganic hybrid multilayered thin films exhibited enhanced transport properties compared to pure PEDOT:PSS, which is attributed to energy filtering and interface effects.
Article
Materials Science, Multidisciplinary
Madhuvathani Saminathan, Jothilal Palraj, Prince Wesley, Manojkumar Moorthy, Ravikirana, Suresh Perumal
Summary: High density pellets of MnSi1.74, MnSi1.8 and MnSi1.9 were prepared by induction-melting and rapid induction hot-pressing. XRD, SEM, and EDS analyses confirmed the presence of fine precipitations of metallic MnSi in MnSi1.74 and Si in MnSi1.8 and MnSi1.9. The increase in Si content led to gradual decrease in electrical conductivity and significant increase in Seebeck coefficient, with notable reduction in total thermal conductivity for MnSi1.8 resulting in enhanced zT at high temperatures.
Article
Materials Science, Multidisciplinary
Jun Seop Lee, Shrayesh N. Patel
Summary: By controlling the doping level of polymer chains, we have successfully improved the thermoelectric performance of conductive organic-based thermoelectric generators. The charge carrier density and thermoelectric properties can be precisely controlled by varying the applied potential.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Physical
Zhixiang Jin, Qiang Su, Hong Quan Liu, Yan Fang Wang
Summary: With the emergence of high-performance thermoelectric materials, thermoelectric devices have shown attractive application prospects. In the Cu-Se system, bond-structure adjustment through simple silver doping has been designed to improve thermoelectric properties. The addition of silver expands the lattice of α-Cu2Se and stabilizes β-Cu2Se as the room temperature phase. Silver doping leads to significant changes in valence band spectra, improving thermoelectric transport behavior at higher temperatures. The Cu1.99Ag0.01Se bulk sample exhibits improved thermoelectric transport properties and demonstrates the highest ZT value at 773 K.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Ubaid ur Rehman, Kashaf ul Sahar, Khalid Mahmood, Maheen Kanwal, Arslan Ashfaq, Muhammad Faisal Iqbal, Hongchao Wang, Nabil Al-Zaqri, Ejaz Hussain, Abbas Ahmad Khan
Summary: In this article, a low-cost hydrothermal approach is used to enhance the thermoelectric performance of ZnO nanostructures through modulation doping. Pure and X:ZnO (X = Ni & Mn) samples are prepared, and it is found that Mn-doped samples exhibit the highest Seebeck coefficient (-36 mu V/degrees C) compared to the pure and Ni-doped samples (-22 mu V/degrees C & -27 mu V/degrees C) at room temperature. The highest Seebeck coefficient in the Mn-doped samples is attributed to the creation of mid-gap energy band states by substituting Mn2+ with Zn2+, leading to a spin polarization effect and imbalanced DOS. On the other hand, Ni-doped ZnO samples show the highest electrical conductivity (122 S/cm) due to the incorporation of Ni metal ions, resulting in a high carrier concentration. Despite this, the Mn-doped sample achieves the maximum thermoelectric power factor of 1.12 x 10^(-5) Wm^(-1)C^(-2) at room temperature.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Guipeng Li, Guihong Song, Nan Wang, Fang Hu, Yusheng Wu, Hao Du, Junhua Yuo
Summary: In this study, p-type Cu-Se films with different Cu contents were prepared and their phase composition was systematically studied. The results showed that the phase composition of the films changed with increasing Cu content. Furthermore, the carrier concentration and mobility exhibited opposite trends at room temperature, while the Seebeck coefficient and power factor showed different variations depending on the phase composition.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Nan Wang, Guihong Song, Guipeng Li, Yusheng Wu, Junhua You
Summary: The Mn-doped beta-Cu2Se films deposited on a single-crystalline Si substrate exhibit excellent thermoelectric properties, with the resistivity and Seebeck coefficient increasing, carrier concentration decreasing, and carrier mobility increasing with increasing Mn content. The film with 1.94 at.% Mn shows the highest power factor and a figure of merit (ZT) of 0.85 at room temperature, demonstrating the potential to improve the thermoelectric properties of beta-Cu2Se films by doping Mn and obtaining a highly preferred orientation.
Article
Chemistry, Physical
Guipeng Li, Guihong Song, Nan Wang, Yusheng Wu, Hao Du, Junhua You, Hangzhou Zhang
Summary: The β-Cu2+xSe/a-C nano-multilayer films were prepared, and their thermoelectric properties were investigated. The modulation periods were found to affect the carrier concentration, mobility, thermal conductivity, resistivity, and Seebeck coefficient. The nano-multilayer films exhibited enhanced power factor and ZT values, which were attributed to the scattering effect of the depletion layer at the β-Cu2+xSe/a-C interface and the presence of the heterogeneous interface.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Gui-hong Song, Gui-peng Li, Xiu-yu Li, Hao Du, Fang Hu, Lisong Yin
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)