Article
Materials Science, Multidisciplinary
Stefano Pasini, Donato Spoltore, Antonella Parisini, Gianluca Foti, Stefano Marchionna, Salvatore Vantaggio, Roberto Fornari, Alessio Bosio
Summary: Sb2Se3 is a V2VI3 binary chalcogenide compound with a single crystalline phase and fixed composition. It has a narrow energy gap (1.1 to 1.3 eV) that is optimal for single-junction solar cells. Due to its abundance and non-toxicity, Sb2Se3 is a promising material for low-cost thin-film solar cells. The preferential orientation of Sb2Se3 significantly affects the photovoltaic parameters, as demonstrated by Sb2Se3-based solar cells fabricated on different substrates.
Review
Chemistry, Physical
Jinxin Liu, Yunxu Chen, Xinliang Feng, Renhao Dong
Summary: Two-dimensional conjugated metal-organic frameworks (2D c-MOFs) are emerging as a unique class of electronic materials due to their intrinsic electrical conductivities. This review summarizes the synthesis and device investigation of 2D c-MOF thin films, focusing on molecular structures, synthetic methodologies, and device applications. The challenges in the development of 2D c-MOF films for (opto-)electronics are highlighted, and possible future directions are proposed.
Article
Materials Science, Multidisciplinary
Ping Ren, Runqiao Song, Yong Zhu, Brendan O'Connor, Jingyan Dong
Summary: The demand for cost-effective fabrication of printed flexible transistors has increased due to the need for flexible interface devices like e-skins, wearables, and medical patches. This study develops electrohydrodynamic printing processes to fabricate all components of polymer-based organic thin film transistors, streamlining the fabrication procedure. The fully EHD-printed OTFTs show good electrical performance and great mechanical flexibility, providing a cost-effective route for flexible electronics.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Anca-Ionela Istrate, Iuliana Mihalache, Cosmin Romanitan, Oana Tutunaru, Silviu Vulpe, Florin Nastase, Lucia Monica Veca
Summary: The study revealed the impact of doping on the morpho-structural and opto/electrical properties of Ca-doped ZnO:Al thin films obtained by RF magnetron sputtering. Various techniques such as SEM, EDX, and XRD were used to investigate the surface morphology, composition, crystal structure, and electrical conductivity of the films. The correlation between doping level and electrical conductivity, as well as the triggering of specific emission peaks by the Ca dopant, were significant findings of the study.
Article
Chemistry, Physical
Ran Wang, Jianxin Deng, Zhihui Zhang, Dongliang Ge
Summary: This study successfully enhanced the microstructure and mechanical properties of Ni3Al matrix composite films through the design of micro-laminated films. The Ni3Al-Cr3C2-MoS2/Ni3Al-Ti3SiC2-MoS2 (NMCs-3) micro-laminated films exhibited denser structure, stronger orientation, and better adhesion, as well as superior tribological properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
O. F. Goktas, N. E. Koksal, O. Kaplan, A. Yildiz
Summary: The sol-gel method was used to fabricate Al-doped ZnO (AZO) thin films on p-Si substrates with smooth surfaces and highly oriented crystal structures. The analysis revealed that the AZO/Si heterojunctions exhibited nonideal diode behavior, with the 80 nm thick AZO layer demonstrating good rectifying properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Multidisciplinary Sciences
Jun Li, Corey Carlos, Hao Zhou, Jiajie Sui, Yikai Wang, Zulmari Silva-Pedraza, Fan Yang, Yutao Dong, Ziyi Zhang, Timothy A. Hacker, Bo Liu, Yanchao Mao, Xudong Wang
Summary: In this study, a promising solution that integrates piezoelectricity, stretchability, and biocompatibility in one material system was presented, which is a critical step towards tissue-compatible biomedical devices.
NATURE COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Guowei Lv, Hongmiao Tian, Jinyou Shao, Demei Yu
Summary: This paper reviews a recent patterning technique called electrohydrodynamic patterning (EHDP), which uses an externally applied electric field to create micro-/nano-patterns on thin polymeric films. The theoretical and numerical studies of EHDP are presented, as well as the discussion on how the characteristic wavelength and time are influenced by external conditions and polymer properties. Various strategies for fabricating high-aspect-ratio or hierarchical patterns are reviewed, with emphasis on aligning and ordering of anisotropic polymers. The paper also provides a perspective on the novelty and limitations of EHDP compared to conventional patterning techniques, and suggests possible future research directions.
Article
Materials Science, Multidisciplinary
Ran Wang, Jianxin Deng, Zhihui Zhang, Yang Lu, Xuemu Li, Dongliang Ge
Summary: The purpose of this study is to provide a clean and efficient preparation process for Ni3Al-Cr3C2 composite films. Two types of slurries were prepared and deposited on a stainless steel substrate using electrohydrodynamic atomization technology. The influence of atomization parameters on the characteristics of the deposited films was investigated. The optimized deposition parameters resulted in the fabrication of homogeneous and compact films with low emissivity in the middle and far-infrared spectrum.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Mechanical
Ran Wang, Jianxin Deng, Zhihui Zhang, Qinghao Sun
Summary: This study utilized laser surface texturing technology and electrohydrodynamic atomization technology to improve the tribological properties of Ni3Al matrix composite films. The results showed that Ni3Al matrix composite films with a specific texture exhibited excellent anti-friction properties and wear resistance.
Article
Thermodynamics
Qian Kong, Shiqi Yang, Qisi Wang, Zhentao Wang, Qingming Dong, Junfeng Wang
Summary: An electrified jet in electrohydrodynamic atomization can further disintegrate into fine drops, resulting in highly charged and monodispersed drops. The dynamics of the breakup process and the operating parameters that affect spraying modes were analyzed. The geometrical forms of the drops/jets emitted were classified into periodic dripping, pulsating-jet, stable-jet, and unstable jet. Propylene glycol and n-octanol were specifically discussed. Electric stresses significantly accelerated the jet velocity and the breakup length increased with liquid flow rate. The jet position gradually deflected off the needle axis with an increase in electric potential. "Size separation effect" was found to improve printing quality by removing highly charged satellite drops.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Ping Ren, Jingyan Dong
Summary: The study focuses on the development of foldable sustainable electronics using electrohydrodynamic (EHD) printing to fabricate PEDOT:PSS/graphene composite circuits on polyvinyl alcohol (PVA) films. The printed electronics demonstrate good foldability and mechanical stability, and maintain stable electronic response even after multiple folding and unfolding cycles. The use of printed PEDOT:PSS/graphene circuits as resistive temperature sensors for body temperature and respiration monitoring is also presented, highlighting their potential for transient electronics and biodegradability.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
P. A. Chate, D. J. Sathe, S. L. Hake
Summary: Nickel selenide thin films were synthesized on amorphous templates using a dip method. The films exhibited polycrystalline nature and high absorptivity with a direct type of transition.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Physics, Condensed Matter
Prasad Kumar, Parvathy M. Venu, K. M. Sandeep, Veena Shivadas Kindalkar, Ananya M. Kote, S. M. Dharmaprakash
Summary: This paper investigates the fabrication of aluminum-doped zinc oxide thin films at different laser ablation fluences and analyzes their structural, optical, and electrical properties. The thin films prepared at 35 J/cm2 fluence exhibit the highest transmittance (>86%) and the lowest resistivity, with a remarkable switching behavior from p-type to n-type semiconductivity. The non-polar a-plane oriented AZO thin film shows promising optoelectronic properties for LED device fabrication.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Polymer Science
Sherif Madkour, Marcel Gawek, Andreas Hertwig, Andreas Schoenhals
Summary: The thermodynamic behavior of thin PVME films with an irreversible adsorbed layer on the substrate was studied. Various techniques, including leaching, AFM, ellipsometry, and dielectric spectroscopy, were used to investigate growth kinetics, critical film thickness, influence on glass transition temperature, and molecular dynamics of the adsorbed layer. The study revealed strong percolation effects of the adsorbed layer on thin films.
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
Biochemistry & Molecular Biology
Young-Su Kim, Arun Asif, Abdul Rahim Chethikkattuveli Salih, Jae-Wook Lee, Ki-Nam Hyun, Kyung-Hyun Choi
Summary: Integrating perfusion channels into the spheroid culture platform enhances the proliferation and metabolic capacity of microphysiological models, validating the advantage of dynamic culture conditions.
Review
Biochemistry & Molecular Biology
Inamullah Mahar, Fida Hussain Memon, Jae-Wook Lee, Kyung Hwan Kim, Rafique Ahmed, Faheeda Soomro, Faisal Rehman, Ayaz Ali Memon, Khalid Hussain Thebo, Kyung Hyun Choi
Summary: Two-dimensional materials like graphene have great potential in various separation applications, while MXene as a new member of the 2D polymer family has attracted significant attention in water purification. MXene-based lamellar membranes show promising antibacterial properties and commercial potential in water purification.
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
Engineering, Chemical
Asif Iqbal, Guolong Zhao, Quentin Cheok, Ning He, Malik M. Nauman
Summary: Tool life criterion based on work surface roughness can extend tool life and make the machining process more sustainable.
Review
Materials Science, Multidisciplinary
Zulfikre Esa, Muhammad Abid, Juliana Hj Zaini, Brahim Aissa, Malik Muhammad Nauman
Summary: Electrohydrodynamic (EHD) printing is an ultra-high-resolution additive manufacturing technique that offers cost-effective and material-efficient direct-writing process without the need for vacuum or contact. It has advantages in terms of aspect ratio, performance improvement, and ink materials flexibility compared to other manufacturing techniques. EHD printing is used for fabricating micro and nanoelectronic devices and can operate in drop-on-demand or continuous jet printing styles for patterning and deposition of materials.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
Muhammad Nihal Naseer, Khurram Kamal, Muhammad Abid, Asif Iqbal, Hamdullah Khan, Ch. Muhammad Zubair, Sagar Kumar, Tahir Abdul Hussain Ratlamwala, Malik Muhammad Nauman
Summary: Energy production from clean and green sources is a major challenge. The integration of fuel cells and biogas offers a promising solution to reduce CO2 emissions. This study contributes by developing a self-sustaining biogas-fuel cell system for cold areas.
INTERNATIONAL JOURNAL OF PHOTOENERGY
(2022)
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.
Article
Energy & Fuels
Quentin Cheok, Nurul Hafizan Husaini, Malik Muhammad Nauman
Summary: Personal transportation is prevalent in Brunei due to inadequate public transportation, but the effects of climate change cannot be ignored. This study found that electric vehicles have higher total cost of ownership compared to internal combustion engine vehicles, but are comparable to European premium brands.
