Article
Chemistry, Physical
Vikash Sharma, Divya Sharma, Ranu Bhatt, Pankaj K. Patro, Gunadhor Singh Okram
Summary: We report on the thermoelectric properties of nickel-doped Ag2-xNixTe nanostructures in a certain temperature range. The material undergoes a metal-insulator transition with increasing nickel doping concentration. The electrical resistivity and Seebeck coefficient show linear relationships with temperature. The material achieves higher thermoelectric coefficient through a sharp decrease in thermal conductivity associated with a structural phase transition.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Ganapathy Saravanavel, Sanath Kumar Honnali, K. Shifana Lourdes, Sanjay John, K. R. Gunasekhar
Summary: Al-ZnO thin-film stacks were fabricated using the PVD process, with ZnO films of different oxygen compositions. The deposition parameters were found to influence the thermoelectric properties of the thin film. The stack with ZnO oxygen composition of 80.45% exhibited the best linear response between 360 K and 400 K.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Review
Chemistry, Multidisciplinary
Mustafa Majid Rashak Al-Fartoos, Anurag Roy, Tapas K. Mallick, Asif Ali Tahir
Summary: Amidst global challenges, thermoelectricity offers a promising solution for sustainable energy by converting waste heat into electricity. However, obstacles such as high cost, toxicity, and reliance on rare-earth elements hinder the development of high-performance thermoelectric materials.
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
Russlan Jaafreh, Kang Yoo Seong, Jung-Gu Kim, Kotiba Hamad
Summary: This study employed deep learning to investigate the performance of thermoelectric materials, achieving reliable and accurate predictions, successfully reproducing experimental behaviors, and making extensive predictions for a large number of compositions.
Article
Materials Science, Multidisciplinary
Ashutosh Kumar, D. Sivaprahasam, Ajay D. Thakur
Summary: The study investigates the thermoelectric properties of a LaCoO3/La0.7Sr0.3CoO3 nanostructured composite, showing that manipulating the thermoelectric parameters through composite approach improves the zT value significantly.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Construction & Building Technology
Xiaoli Liu, Ming Qu, Alan Phong Tran Nguyen, Neil R. Dilley, Kazuaki Yazawa
Summary: The research investigates thermoelectric cement candidates for building envelope applications, studying the impact of additives graphite and MnO2, as well as two different fabrication methods (wet-mixing and dry-mixing) on thermoelectric performance. The DynaCool Physical Properties Measurement System was used to test the thermoelectric properties of candidates, revealing that the thermoelectric cement with 10% graphite and 5% MnO2 has the highest ZT value at 350 K.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Physical
Pradeep Kumar Sharma, T. D. Senguttuvan, Vijay Kumar Sharma, Sujeet Chaudhary
Summary: Thermoelectric technology has emerged as an environmentally friendly and promising energy conversion technology for extracting electrical energy from waste heat. Lead telluride, known for its intrinsic properties, has shown significant advancements in thermoelectric performance over the past decade, surpassing practical criteria for efficiency. Future strategies should focus on maximizing synergistic effects to further enhance thermoelectric performance.
MATERIALS TODAY ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Vikrant Trivedi, Minati Tiadi, Budaraju Srinivasa Murty, Dillip K. Satapathy, Manjusha Battabyal, Raghavan Gopalan
Summary: By tailoring interface carrier filtering, we achieved a very high thermoelectric figure-of-merit in skutterudite nanocomposites, resulting in a significant increase in the Seebeck coefficient and a reduction in thermal conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Shakeel Ahmad Khandy, Jeng-Da Chai
Summary: The study reveals satisfactory thermoelectric properties of ZrRhSb under strain, especially achieving optimal performance at 10% compression. The phonon dynamic stability as well as the material's mechanical and elastic properties have an impact on its thermoelectric performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Applied
I Mili, H. Latelli, T. Ghellab, Z. Charifi, H. Baaziz, F. Soyalp
Summary: The physical properties of Ca1-xYbxZn2Sb2 Zintl compounds were studied by changing the composition x, leading to more metallic behavior as x increases and semiconductor-like behavior as x decreases. CaZn2Sb2 shows large thermopower magnitude at high temperatures, while YbZn2Sb2 has a low figure of merit factor due to its compact structure and small bandgap. The narrow-gap CaZn2Sb2 shows a balance between high Seebeck coefficient and low electronic thermal conductivity, making it promising for thermoelectric applications.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2021)
Article
Energy & Fuels
Aadil Fayaz Wani, Bindu Rani, Shobhna Dhiman, Utkir Bahodirovich Sharopov, Kulwinder Kaur
Summary: This work reports the stability and dynamics, mechanical and thermoelectric properties of SiH monolayer. It is found that SiH is an indirect semiconducting monolayer with a bandgap of 2.19 eV. Calculations on thermoelectric parameters confirm the potential thermoelectric performance of SiH monolayer. This study reveals the efficient application of SiH monolayer as a thermoelectric material for the first time.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Joao Ider, Adhimar Oliveira, Rero Marques Rubinger
Summary: Due to the rising cost of energy and the continuous development of thermoelectric materials, a new system for characterizing thermoelectric generation devices has been proposed, which can significantly reduce errors and costs.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Engineering, Environmental
Ahmed Gamal El-Shamy
Summary: Recently, there has been a growing interest in thermoelectric materials and nano-composite materials based on conducting polymers due to their unique thermoelectric functions as well as flexibility, harmlessness, and abundance. New nano-composite films based on Nitrogen doped Carbon nano-dots decorated Telluride nano-rods have been designed, showing significant improvements in their thermoelectric properties. The introduction of Nitrogen doped Carbon nano-dots led to enhanced electrical conductivity, decreased Seebeck coefficient, and increased power factor, resulting in improved thermoelectric performance of the composite films.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Multidisciplinary
Mohammed M. El-Banna, Adel Helmy Phillips, Ahmed Saeed Abdelrazek Bayoumi
Summary: Theoretical investigations of valley-spin caloritronic transport properties of ferromagnetic silicene superlattice under ac-field effect are conducted using the transfer matrix method at various frequencies. The study focuses on describing resolved thermoelectric parameters and reveals an oscillatory behavior in all investigated thermoelectric parameters, which may be due to photon-assisted tunneling. Improved power factors are observed and attributed to the quantum confinement effect. The findings suggest that ferromagnetic silicene superlattice shows promise for energy harvesting and cooling applications in nanodevices.
AIN SHAMS ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Shahzadi Tayyaba, Muhammad Waseem Ashraf, Zubair Ahmad, Ning Wang, Muhammad Javaid Afzal, Nitin Afzulpurkar
Summary: In this research, PDMS microchannels have been fabricated for biomedical application, specifically for varicose veins implantation. Simulation and experimental results show that the PDMS microchannels are biocompatible and exhibit different performance under various flow conditions, suitable for replacing varicose veins.
Article
Green & Sustainable Science & Technology
Azza Abouhashem, Rana Magdy Abdou, Jolly Bhadra, Nitha Siby, Zubair Ahmad, Noora Jabor Al-Thani
Summary: This study describes the development of a STEM-based online course during the COVID-19 pandemic and successfully helped students overcome a decline in learning productivity. By utilizing various digital learning resources and a feedback mechanism, the course achieved positive outcomes with students exhibiting active learning behaviors.
Article
Green & Sustainable Science & Technology
Amr Zeedan, Abdulaziz Barakeh, Khaled Al-Fakhroo, Farid Touati, Antonio S. P. Gonzales
Summary: This paper quantified the losses of photovoltaic panels due to dust in Qatar's harsh environment, finding that exposure to an average ambient dust density of 0.7 mg/m3 led to a 43% reduction in output power after six months without cleaning. The potential economic losses for ongoing solar PV projects in Qatar were also estimated, highlighting the pressing need to mitigate soiling effects in PV power plants.
Article
Green & Sustainable Science & Technology
Ruba Ali, Jolly Bhadra, Nitha Siby, Zubair Ahmad, Noora Jabor Al-Thani
Summary: The Science in Sports (SIS) program in Qatar integrates engineering design of sports products with STEM education to enhance secondary school students' interest and affinity towards STEM fields. The study found that through STEM workshops and engineering activities with sports materials, students showed improved learning and attitudes towards STEM as part of the educational reform.
Review
Chemistry, Multidisciplinary
Farheen F. Jaldurgam, Zubair Ahmad, Farid Touati
Summary: Thermoelectricity is a promising technology for converting heat energy into electricity, with applications in waste heat recovery and solar energy conversion. To commercialize thermoelectric generators on a large scale, stable, easy-to-fabricate nanostructured materials are needed, along with evaluation of different techniques' pros and cons.
Article
Environmental Sciences
Damiano Crescini, Farid Touati, Alessio Galli
Summary: This paper presents a multiparametric sensor node for indoor/outdoor air quality monitoring that can operate without a battery or human intervention, using energy harvested from the surrounding environment for perpetual operation. The complete system design of the sensor and experimental results are reported, along with the evaluation of the energy-harvesting blocks with a budget allocation of the power consumption.
Article
Chemistry, Physical
Farheen F. Jaldurgam, Zubair Ahmad, Farid Touati, Abdulla Al Ashraf, Abdul Shakoor, Jolly J. Bhadra, Noora Al-Thani, Talal Altahtamouni
Summary: Our current work aims to enhance the thermoelectric properties of p-type copper selenide by a low-cost, simple and fast microwave-assisted metallurgy route. The results indicate exceptional electrical, thermal, and mechanical properties for samples annealed at 375 ? with high room temperature electrical conductivity and ultra-low thermal conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Farheen F. Jaldurgam, Zubair Ahmad, Farid Touati, Abdullah Al Ashraf, Jolly Bhadra, Talal Altahtamouni, Noora J. Al-Thani
Summary: Both p-type and n-type bismuth telluride-based thermoelectric materials show high thermoelectric efficiency in low-temperature thermoelectric modules, but their thermal and mechanical stability restrict their commercial applications. In this study, we report the thermal and mechanical properties of these materials prepared by the cold compaction method. The results show good thermal stability below 350°C and consistent compression strength for all samples.
MATERIALS TODAY COMMUNICATIONS
(2022)
Review
Energy & Fuels
Ehsan Raza, Zubair Ahmad
Summary: Silicon solar cells are the dominant technology in the photovoltaic market, but their efficiency still falls short of the theoretical limit. Perovskite solar cells, with their solution-processability and tunable bandgap, offer great potential for tandem configurations with silicon. Si/perovskite tandem solar cells have achieved high efficiencies and factors affecting their performance are discussed.
Article
Environmental Sciences
Hasan Tariq, Farid Touati, Damiano Crescini, Adel Ben Mnaouer
Summary: The current COVID-19 pandemic has raised concerns about the deterioration of outdoor air quality, including the increase of harmful gases, repeated inhalation due to mask usage, and harsh environmental temperatures. These challenges can hinder the prevention and treatment of respiratory diseases, epidemics, and pandemics. In this research, a novel optimized regression algorithm was proposed to analyze air quality data collected from sensor nodes, which achieved promising results in forecasting COVID-19 countermeasures.
Article
Chemistry, Multidisciplinary
Faria Sheikh, Aleena Arshad, Fareeha Marriam, Zubair Ahmad, Ali Haider, Mudassir Iqbal, Muhammad Adil Mansoor
Summary: This study presents a low-cost nickel sulfide/nickel oxide (NiS/NiO) heterostructure as an anode catalyst for the electrocatalytic oxidation of methanol. The synthesized NiS/NiO/Ni foam showed high efficiency and stability, initiating the methanol oxidation reaction at a remarkably low potential. The NiS/NiO catalyst outperformed its counterparts (NiS and NiO) under the same electrochemical circumstances, offering a high current density.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Faria Sheikh, Aleena Arshad, Fareeha Marriam, Zubair Ahmad, Ali Haider, Mudassir Iqbal, Muhammad Adil Mansoor
Summary: This study presents a low-cost anode catalyst composed of a nickel sulfide/nickel oxide (NiS/NiO) heterostructure deposited on a nickel foam for the electrocatalytic oxidation of methanol. Through characterization and electrochemical evaluation, it was found that this composite material exhibited highly efficient and stable performance, initiating the methanol oxidation reaction at a low potential. It outperformed its counterparts (NiS and NiO) under the same electrochemical conditions, offering high current density in alkaline media.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Aamir Abbas, Joohoon Kim, Ahsan Sarwar Rana, Inki Kim, Bacha Rehman, Zubair Ahmad, Yehia Massoud, Junhwa Seong, Trevon Badloe, Keunhan Park, Muhammad Qasim Mehmood, Muhammad Zubair, Junsuk Rho
Summary: STPV systems utilize a wideband absorber and emitter pair to achieve efficient solar cell design, demonstrating high efficiency at different temperatures and solar concentrations.
