Article
Chemistry, Physical
Xuemu Li, Jianxin Deng, Lili Liu, Ran Duan, Dongliang Ge
Summary: Graphite was introduced to enhance the mechanical properties and oxidation resistance of WS2 coatings, while sharkskin-like biomimetic textures improved adhesion strength between coatings and substrates. The combination of improved adhesion strength, oxidation resistance, and antifriction capability of micro/nano-textures resulted in a low friction coefficient and extended wear life.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Yang-Ming Lu, Chi-Feng Tseng, Bing-Yi Lan, Chia-Fen Hsieh
Summary: In this study, hydrogen and methane were used as reactive gases for growing single-layer graphene on a copper foil substrate using chemical vapor deposition. The graphene was then transferred to a silicon substrate for the growth of nano zinc oxide. The characteristics of CVD-deposited graphene and the nano zinc oxide were analyzed using various instruments. The graphene/zinc oxide nano-heterostructure sensor showed high sensitivity and repeatability in detecting hydrogen gas due to the specific surface area and oxygen vacancy defects of the zinc oxide nanostructure, as well as the P-N heterojunction formed between zinc oxide and graphene.
Article
Chemistry, Physical
Worachote Photaram, Monrudee Liangruksa, Montri Aiempanakit, Cheewita Suwanchawalit, Anurat Wisitsoraat, Jirasak Sukunta, Sakchai Laksee, Chawarat Siriwong
Summary: Gas sensing devices are crucial in various applications and there is a pressing need for improved sensing materials and advanced sensor devices. This study combines theoretical and experimental approaches to design and fabricate a hybrid zinc oxide/graphene material for enhanced performance. The research demonstrates that the Zn12O12/graphene nanohybrid shows excellent gas sensing properties, particularly for ethanol gas detection.
APPLIED SURFACE SCIENCE
(2022)
Review
Chemistry, Multidisciplinary
Jueli Shi, Jiaye Zhang, Lu Yang, Mei Qu, Dong-Chen Qi, Kelvin H. L. Zhang
Summary: Wide bandgap oxide semiconductors are a unique class of materials with properties of electrical conductivity and optical transparency, widely used in optoelectronics. Recent research focuses on understanding the materials physics and designing new high-performing TFT devices based on oxide semiconductors.
ADVANCED MATERIALS
(2021)
Review
Materials Science, Multidisciplinary
Xinran Zheng, Mingshuang Hu, Yixuan Liu, Jun Zhang, Xiangxiang Li, Ximing Li, Hui Yang
Summary: High-resolution flexible electronic devices produced through e-jet printing technology involve material selection and printing process control. Various applications include flexible sensors, FETs, flexible displays, and more.
SCIENCE CHINA-MATERIALS
(2022)
Review
Chemistry, Physical
Dequan Wei, Xiang Liu, Shenghua Lv, Leipeng Liu, Lei Wu, Zexiong Li, Yonggang Hou
Summary: This review summarizes and discusses the fabrication, properties, and application prospects of graphene-based composite aerogel (GCA). It also introduces the existing problems and development trends of GCA, aiming to generate more interest and research in this field.
Article
Chemistry, Multidisciplinary
Esraa Moustafa, Jehan El Nady, Abd El-Hady B. Kashyout, Kamel Shoueir, Maged El-Kemary
Summary: This study successfully produced nitrogen-doped graphene nanodiscs from waste tires with excellent capacitance and stability as electrodes in supercapacitors. By increasing the temperature, a mixed graphene structure was formed with high power density and energy density. The findings provide a solution for waste disposal and explore the potential for energy use of waste materials.
Article
Chemistry, Physical
Junmo Jeon, Young-Kwan Kim
Summary: Graphene oxide is functionalized with ethylenediaminetetraacetic acid to improve its dispersibility and enhance mechanical properties. The functionalized graphene oxide shows a distinct structure and has a nematic liquid-crystalline phase. Ionic cross-linking with divalent cations further enhances the mechanical properties. This study suggests that ethylenediaminetetraacetic acid functionalization improves the potential of graphene oxide derivatives as a high-performance structural material.
APPLIED SURFACE SCIENCE
(2023)
Article
Energy & Fuels
Dawei Liu, Weijun Xie, Zehan Xu, Peiquan Deng, Zhaozhi Wu, Igor Zhitomirsky, Wenxia Wang, Ri Chen, Li Zhou, Yunying Xu, Kaiyuan Shi
Summary: This study develops a simple and low-cost electric discharge ablation technique for fabricating ceramic supercapacitor electrodes. The obtained microsupercapacitors show superior capacitive behavior.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Chemistry, Multidisciplinary
Ohchan Kwon, Yunkyu Choi, Eunji Choi, Minsu Kim, Yun Chul Woo, Dae Woo Kim
Summary: The review discusses eight physical methods for the fabrication of GO membranes, categorizing them based on batch-unit or continuous production into five small-scale (vacuum filtration, pressure-assisted filtration, spin coating, dip coating, drop-casting) and three large-scale (spray coating, bar/doctor blade coating, slot die coating) approaches. Large-scale methods offer the advantage of continuous production which is not limited by equipment dimensions but rather material availability, while small-scale methods are restricted by the size of the fabrication device.
Article
Materials Science, Ceramics
Kuipeng Zhao, Yuheng Yuan, Dazhi Wang, Haoran Zong, Liangkun Lu, Pengfei Xu, Lunxiang Wang, Chaoyang Jiang, Zhongqi Jiang, Yan Li, Zhu Wang
Summary: This paper introduces a method for fabricating PZT thick-film microcantilevers on stainless-steel substrates using E-jet deposition, which allows for batch manufacturing and improved energy and fracture toughness of the PZT active layer. Experimental results demonstrate that the microcantilever has a large vibrational amplitude and a significantly higher Qm value compared to similar-sized thick-film silicon-based microcantilevers.
CERAMICS INTERNATIONAL
(2021)
Article
Physics, Multidisciplinary
Lujun Wang, Andreas Baumgartner, Peter Makk, Simon Zihlmann, Blesson Sam Varghese, David I. Indolese, Kenji Watanabe, Takashi Taniguchi, Christian Schoenenberger
Summary: Mechanically distorting a crystal lattice can engineer the electronic and optical properties of a material, such as introducing a scalar potential in graphene. This method provides a new way to manipulate the optical and electronic properties of materials by using external strain.
COMMUNICATIONS PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Manuel Vazquez Sulleiro, Aysegul Develioglu, Ramiro Quiros-Ovies, Lucia Martin-Perez, Natalia Martin Sabanes, Maria Lourdes Gonzalez-Juarez, I. Jennifer Gomez, Mariano Vera-Hidalgo, Victor Sebastian, Jesus Santamaria, Enrique Burzuri, Emilio M. Perez
Summary: The research successfully achieved the coupling of 2H-MoS2 and graphene in field-effect transistors through covalent grafting, providing the possibility of functionalizing multiple devices.
Article
Chemistry, Physical
S. Veeresh, H. Ganesha, Y. S. Nagaraju, H. Vijeth, H. Devendrappa
Summary: In this study, novel nanocomposites of activated carbon/graphene oxide/tin oxide (AC/GO/SnO2) and activated carbon/graphene oxide/titanium-zinc acetate dehydrate (AC/GO/TiO2-Zn) were synthesized using hydrothermal method. The structural phase change, morphology, and microstructural arrangement in the nanocomposites were characterized using various techniques. Symmetry supercapacitor electrode devices were fabricated using the nanocomposites and their electrochemical properties were evaluated. The AC/GO/TiO2-Zn electrode demonstrated high specific capacity and cycle stability, indicating its suitability for supercapacitor applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Engineering, Environmental
F. H. Abdullah, N. H. H. Abu Bakar, M. Abu Bakar
Summary: This review summarizes recent advances in the fabrication, modification, and industrial application of zinc oxide (ZnO) photocatalysts for wastewater treatment, highlighting the potential for improved efficiency and use of renewable resources in greener photocatalytic technologies.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Imran Shah, Shahid Aziz, Afaque Manzoor Soomro, Kyunghwan Kim, Soo Wan Kim, Kyung Hyun Choi
Summary: The paper introduces three novel designs of micromixers for evaluating mixing performance in biodiesel preparation. The YCSMSAR micromixer demonstrates the best mixing efficiency at a Reynolds number of 100, with a mixing index of 99.9%.
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Muhammad Shakeel, Khalid Rehman, Salman Ahmad, Kyung-Hyun Choi, Arshad Khan
Summary: Thermocouples are widely used for temperature measurement due to their reliability, with this research focusing on the fabrication of thermocouples using carbon and PEDOT: PSS materials to explore their performance. The study found that different materials have similar Seebeck coefficients, and the coefficient is not only material-dependent but also influenced by the electrical properties of the thermocouples.
IEEE SENSORS JOURNAL
(2021)
Article
Energy & Fuels
Muhammad Waqas, Afaque Manzoor Soomro, Shamshad Ali, Hina Ashraf, Abdul Sattar Chan, Suresh Kumar, Kyung Hyun Choi
Summary: The highly efficient microporous composite separator based on PVDF-HFP and C-La2O3 shows enhanced mechano-thermal stability and improved conductivity of lithium ions. It exhibits high wettability, electrolyte uptake, and ionic conductivity for high-temperature lithium-ion batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Hafiz Muhammad Umer Farooqi, Bohye Kang, Muhammad Asad Ullah Khalid, Abdul Rahim Chethikkattuveli Salih, Kinam Hyun, Sung Hyuk Park, Dongeun Huh, Kyung Hyun Choi
Summary: Hepatic fibrosis is a warning sign for future adverse events like liver cirrhosis, liver failure, and cancer, mainly caused by hepatic stellate cell activation leading to excessive extracellular matrix deposition and hepatic parenchyma disintegration. In a dynamic cell culture microphysiological system, measuring trans-epithelial electrical resistance (TEER) can be used to monitor fibrosis development effectively, serving as a potential substitute for conventional assays.
Article
Chemistry, Multidisciplinary
Arun Asif, Sung Hyuk Park, Afaque Manzoor Soomro, Muhammad Asad Ullah Khalid, Abdul Rahim Chattikatikatuveli Salih, Bohye Kang, Faheem Ahmed, Kyung Hwan Kim, Kyung Hyun Choi
Summary: In the field of microfluidics, microphysiological systems (MPS) are addressing the challenge of physiological relevance in drug discovery and development by integrating a microfluidic albumin immunosensor with liver-on-a-chip MPS.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Polymer Science
Abdul Rahim Chethikkattuveli Salih, Kinam Hyun, Arun Asif, Afaque Manzoor Soomro, Hafiz Muhammad Umer Farooqi, Young Su Kim, Kyung Hwan Kim, Jae Wook Lee, Dongeun Huh, Kyung Hyun Choi
Summary: Cellular microenvironment is crucial for tissue growth patterns and can be influenced by ECM. Hepatic microphysiological systems emulate human liver physiology for drug screening, and standardized ECM coatings on microfluidic devices may enhance organ-specific emulation. Optimizing surface coatings of different ECM types can improve tissue development, with image processing and TEER sensors assisting in tissue analysis.
Article
Biology
Farzana Kausar, Muhammad-Awais Farooqi, Hafiz-Muhammad-Umer Farooqi, Abdul-Rahim-Chethikkattuveli Salih, Atif-Ali-Khan Khalil, Chul-woong Kang, Mohamed H. Mahmoud, Gaber-El-Saber Batiha, Kyung-hyun Choi, Abdul-Samad Mumtaz
Summary: This study characterized the antimicrobial, antioxidant, and anticancer potentials of a rarely accessed Acer cappadocicum population in northern Pakistan. The extracts showed significant inhibition of bacterial growth, mycelial growth in plant-fungal pathogen, and growth proliferation in cancer cells, demonstrating the antimicrobial, antioxidant, and anticancerous potential of Acer cappadocicum.
Article
Chemistry, Multidisciplinary
Christopher Kagenda, Jae Wook Lee, Fida Hussain Memon, Faheem Ahmed, Anupama Samantasinghar, Muhammad Wasim Akhtar, Abdul Khalique, Kyung Hyun Choi
Summary: The study investigated the effect of MWCNTs and MgO on the thermal conductivity of silicone rubber composites, highlighting the linear relationship between thermal conductivity increment and MgO loading. Functionalized MWCNTs acted as bridging agents to improve compatibility and adhesion, leading to active conductive pathways within the composite. The addition of MWCNTs resulted in an eightfold increase in thermal conductivity compared to the neat elastomer, showing promising potential as a replacement for traditional thermal interface materials.
Article
Plant Sciences
Farzana Kausar, Kyung-Hwan Kim, Hafiz Muhammad Umer Farooqi, Muhammad Awais Farooqi, Muhammad Kaleem, Rooma Waqar, Atif Ali Khan Khalil, Fazli Khuda, Chethikkattuveli Salih Abdul Rahim, Kinam Hyun, Kyung-Hyun Choi, Abdul Samad Mumtaz
Summary: This study investigated the anticancer and antimicrobial activities of Prunus cornuta and Quercus semicarpifolia. The results showed significant inhibitory effects on various cancer cell lines and antibacterial effects against different strains.
Article
Biology
Hafiz Muhammad Umer Farooqi, Anupamma Sammantasinghar, Farzana Kausar, Muhammad Awais Farooqi, Abdul Rahim Chethikkattuveli Salih, Kinam Hyun, Jong-Hwan Lim, Atif Ali Khan Khalil, Abdul Samad Mumtaz, Kyung Hyun Choi
Summary: This study assessed the anticancer activity of plant extracts using a liver tumor microphysiological system. The results demonstrated that the liver tumor microphysiological system showed better anticancer activity compared to traditional cell culture models. It allowed real-time observation of the anticancer effects of plant extracts and provided clues for future molecular research on anticancer pathways.
Article
Chemistry, Multidisciplinary
Adnan Ali, Fedwa El-Mellouhi, Anirban Mitra, Brahim Aissa
Summary: Enhancement of the electromagnetic properties of metallic nanostructures is a research field related to plasmonics. Plasmonics finds wide application in sensing, microscopy, optical communications, and solar energy conversion. Recent developments have been made in understanding the application of plasmonics, including the effects of nanoparticles' size, arrangement, and geometry. This review article emphasizes recent developments, fundamentals, and fabrication techniques for plasmonic nanostructures while investigating their thermal effects and detailing light-trapping enhancement mechanisms.
Article
Chemistry, Multidisciplinary
Adnan Ali, Anirban Mitra, Brahim Aissa
Summary: Controlling light, electricity, and heat has become the foundation for innovations in electrical and electromagnetic technologies. With advancements in nanoscale fabrication techniques, metamaterials have been developed to manipulate light and electromagnetic waves, resulting in unique properties.
Review
Chemistry, Physical
Mohammad Istiaque Hossain, Adnan Ali, Veronica Bermudez Benito, Benjamin Figgis, Brahim Aissa
Summary: This review examines various anti-dust technologies for mitigating photovoltaic soiling and provides recommendations for selecting suitable technologies based on accumulation mechanism, weather conditions, and geographical location. While mechanical cleaning is currently the most common solution, the development of thin film anti-dust coatings presents a potentially better alternative.
Article
Biochemistry & Molecular Biology
Faheeda Soomro, Fida Hussain Memon, Muhammad Ali Khan, Muzaffar Iqbal, Aliya Ibrar, Ayaz Ali Memon, Jong Hwan Lim, Kyung Hyon Choi, Khalid Hussain Thebo
Summary: An easy and efficient method was used to fabricate MoO2@GO and WO3@GO nanocomposite membranes with controlled structure and interlayer spacing. These membranes showed good separation for salt and heavy metal ions due to intensive stacking interaction and electrostatic attraction. They exhibited high rejection rates (>70%) for small metal ions such as sodium (Na+) and magnesium (Mg2+) ions, as well as >99% rejection rates for nickel (Ni2+) and lead (Pb2+) ions, with good water permeability of 275 +/- 10 L m(-2) h(-1) bar(-1). We believe that these fabricated membranes have a bright future in next generation desalination and water purification membranes.
Article
Biochemistry & Molecular Biology
Imtiaz Ali Soomro, Fida Hussain Memon, Waqas Mughal, Muhammad Ali Khan, Wajid Ali, Yong Liu, Kyung Hyun Choi, Khalid Hussain Thebo
Summary: In this study, a three-dimensional computational fluid dynamic model was developed based on published literature data to investigate the impact of temperature and pressure on the performance of proton exchange membrane fuel cells. The results showed that the performance of the fuel cell can be enhanced by adjusting the temperature and operating pressure. It was also found that an increase in temperature leads to a decrease in current density, while fully humidified gas channels and higher reference current density values can improve current density.