Article
Polymer Science
Yu-Ping Zhang, Ya-Ning Wang, Hong-Li Du, Ling-Bo Qv, Jun Chen
Summary: In this study, carbon particles were adsorbed on the surface of stainless steel meshes (SSMs) to form a thin hydrophobic coating, and a rough structure was then constructed through chemical vapor deposition and high temperature calcination, with the resultant SSM surface wrapped with uniform silica coating possessing superoleophobicity-underwater. The prepared SSMs exhibited superhydrophilicity in air and superoleophobicity-underwater. They showed high separation efficiency (above 98.8%) and separation flux (46,300 L·m(-2)·h(-1)) for oil/water mixtures. Immersion in different solutions did not significantly affect their separation efficiency (above 97.3%), and further immersion in dopamine and octadecylamine solutions transformed the SSMs into superhydrophobic SSMs with reverse surface wettability, which also exhibited good separation efficiency and separation flux for oil/water separation.
Article
Engineering, Chemical
Jingwei Lu, Fangchao Li, Gan Miao, Xiao Miao, Guina Ren, Bo Wang, Yuanming Song, Xiangming Li, Xiaotao Zhu
Summary: A superhydrophilic/superoleophobic shell powder coating was developed for advanced separation membrane, effectively separating oil/water mixtures and oil/oil mixtures by utilizing selective wetting behavior towards oils with different polarities. This promising approach presents a high separation efficiency for various oil mixtures.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Applied
Fazli Wahid, Xiang-Jun Zhao, Yun-Xia Duan, Xue-Qing Zhao, Shi-Ru Jia, Cheng Zhong
Summary: The study developed a bacterial cellulose-based superhydrophilic/underwater superoleophobic membrane for efficient oil/water separation, with high separation efficiency and flux rate, along with anti-fouling, recyclability, and stability properties.
CARBOHYDRATE POLYMERS
(2021)
Article
Materials Science, Multidisciplinary
Ruhui Li, Ruobing Yu, Junhan Fan, Bu Chang
Summary: A novel oil-water separation material was developed by coating superhydrophilic copper mesh with a superhydrophilic/superoleophobic paint. The separation material exhibited a oil-water separation efficiency higher than 99.7% and a water flux higher than 80,000 L m(-2) h(-1). It also demonstrated excellent mechanical properties, making it a promising candidate for practical applications.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Qiaoqiao Huang, Kai Yin, Lingxiao Wang, Qinwen Deng, Christopher J. Arnusch
Summary: In this study, a femtosecond laser-based method was used to create a superhydrophobic/superhydrophilic self-splitting pattern on a polyimide film for droplet multi-detection. The behavior of droplet self-splitting on the pattern surface was influenced by the dynamic behaviors of liquid recoiling and spreading, and the conditions for complete self-splitting were determined. The results showed that the pattern could be used for alcohol detection and multiple biological tests using a single drop of biological fluid.
Article
Materials Science, Multidisciplinary
Christian B. Agano, Abbie Gail C. Villanueva, Anna Patricia S. Cristobal, Rozen Grace B. Madera, Arantxa Danielle S. Montallana, Magdaleno R. Vasquez
Summary: Superhydrophilic and underwater superoleophobic meshes were fabricated using a combination of copper oxide and titanium dioxide films, demonstrating efficient oil-water separation capabilities.
RESULTS IN PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Chunhua Liu, Yun Peng, Conglin Huang, Yuzhen Ning, Jiaoping Shang, Yibao Li
Summary: This study presents a novel method to construct Janus copper foam by combining superhydrophobicity and superhydrophilicity. The resulting Janus foam exhibits superior oil/water separation efficiency and repeatability. This design and fabrication method offers a new avenue for practical applications in liquid transportation, sensor devices, energy materials, and oil spills.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Environmental
Xiaochen Li, Ying Peng, Fengfan Zhang, Zihao Yang, Zhaoxia Dong
Summary: Inspired by the Namib desert beetle, a method to construct surfaces with superhydrophilic-superoleophobic properties has been successfully developed. These surfaces exhibit excellent and stable performance under amphibious conditions and offer a new approach to oil-water separation and oil-repellent fabrics.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Paper & Wood
Jing Song, Qiuyu Yu, Xinyue Liang, Qin Rao, Peng Wang, Ming Lu, Hang Xiao
Summary: This paper reports a feasible method of fabricating robust membranes based on cotton fabric (CF) decorated with TiO2 nanoparticles (NP) and citric acid (CA), and systematically evaluates the performance and stability of the membranes. The results show that the prepared membranes have excellent separation efficiency and stability in oil/water separation and treatment of complex oil-in-water emulsions.
Article
Chemistry, Physical
Wei Xiong, Ling Li, Fen Qiao, Junwu Chen, Zhi Chen, Xuedong Zhou, Kaiwen Hu, Xiujian Zhao, Yi Xie
Summary: This study successfully fabricated air superhydrophilic-superoleophobic SiO2 coating by modifying the SiO2 surface with both hydrophilic and oleophobic groups, and constructing porous and hierarchical structures. The coatings showed high-efficiency oil/water separation performance and long-term durability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Chemical
Yujie Yang, Enming Huang, Panchan Dansawad, Yize Li, Yashi Qing, Changzheng Lv, Lixia Cao, Siming You, Yanxiang Li, Wangliang Li
Summary: A superwettable nanofibrous membrane was fabricated using an integrated method, which exhibited robust oil-water separation performances and remarkable stability, making it suitable for treating different types of oily wastewater.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Dai-Lin Zhou, Deng Yang, Di Han, Qin Zhang, Feng Chen, Qiang Fu
Summary: This study introduces a novel SUS membrane with excellent durability by incorporating polyhedral oligomeric silsesquioxane (POSS) nanoparticles on cotton fabric, followed by thiol-ene functionalization to graft hydrophilic carboxyl group. The membrane can withstand long-term mechanical abrasion, ultrasonic washing, UV light irradiation, and corrosive aqueous solutions without compromising underwater superoleophobicity. The membrane demonstrates high water fluxes, over 99% initial separation efficiencies for various oil/water mixtures, and maintained separation efficiency around 98% after 50 cycles under severe conditions. The findings of this study could contribute to the development of advanced SUS membranes with superior durability.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
Jing Chen, Jialong Wu, Yinyan Zhong, Xiaozhen Ma, Wanrong Lv, Honglong Zhao, Jin Zhu, Ning Yan
Summary: In this study, lignin-based polyurethane foams (LPUFs) were synthesized and modified with polydopamine particles and phytic acid to achieve superhydrophilicity and underwater superoleophobicity. The successful loading of PDA particles and coating of PA onto the foam were confirmed by various tests. The modified foam showed high mechanical stability, excellent underwater anti-oil adhesion performances, and efficient oil-water separation with over 99% separation efficiency for different types of mixtures tested.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Multidisciplinary
Feiran Li, Jian Wang, Zhuochao Wang, Dongchao Ji, Shuai Wang, Pengcheng Wei, Wenxin Cao
Summary: Effective integrated methods for oil-water separation and water remediation are of great significance in the energy and environment fields. Materials with both superlyophobic and superlyophilic properties are highly desirable due to their energy-saving and high-efficiency advantages. However, the introduction of low surface tension fluorinated components may lead to environmental harm and additional contamination. Therefore, the development of materials that can achieve both oil-water separation and removal of heavy metal contamination is crucial for industrial applications and environmental sustainability.
Article
Materials Science, Multidisciplinary
Lei Yuan, Tianpeng Wen, Linyang Jiang, Zhenli Liu, Chen Tian, Jingkun Yu
Summary: This study proposed a new strategy by using mullite fiber-based porous ceramic as the matrix and polyethylenepolyamine as the coating material to prepare a superhydrophilic/underwater superoleophobic material via bionic surface grafting technology. The prepared material showed efficient separation of oil/water mixtures with short separation time.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Physics, Applied
Vadim Yalishev, Mazhar Iqbal, Vyacheslav Kim, Ali S. Alnaser
Summary: This study investigates the wettability properties of two types of titanium surfaces structured by femtosecond laser. It is found that samples textured in air show superhydrophilic properties, while samples processed in vacuum exhibit an increase in water contact angle. The observed difference can be attributed to the partial oxidation of the titanium surface during laser structuring in air. High temperature annealing of vacuum-processed samples results in complete oxidation of the titanium surface, leading to the formation of a permanent hydrophilic surface.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Aya M. Abu Baker, Ganjaboy S. Boltaev, Mazhar Iqbal, Mikhail Pylnev, Nasser M. Hamdan, Ali S. Alnaser
Summary: This work presents a systematic study on the ultrafast third-order nonlinear optical processes in mixed perovskite nanocrystals, demonstrating their strong nonlinear optical responses and their potential applications in photonics and optical communications. The study explores the generation of third harmonic radiation and giant two-photon absorption-based photoluminescence in the nanocrystals.
Article
Optics
M. Iqbal, G. S. Boltaev, N. Abbasi, R. A. Ganeev, A. S. Alnaser
Summary: We report on the spatial and spectral variation of high-order harmonics generation from noble gases when driven by high-repetition rate femtosecond laser with different peak intensity and polarization states. Increasing the intensity of the driving pulses leads to disappearance of harmonics yield in the on-axis part of the spatial distribution of the harmonics in Xe target, contrary to Ar and Kr. The spectral depletion of harmonics generated in Ar and Xe using radially and azimuthally polarized Gaussian-Laguerre two-color DPs is also observed.
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2022)
Article
Optics
Wenbin Zhang, Ritika Dagar, Philipp Rosenberger, Ana Sousa-Castillo, Marcel Neuhaus, Weiwei Li, Sharjeel A. Khan, Ali S. Alnaser, Emiliano Cortes, Stefan A. Maier, Cesar Costa-Vera, Matthias F. Kling, Boris Bergues
Summary: Molecular adsorbate reactions on nanoparticles are crucial in nano-photocatalysis, atmospheric, and astrochemistry. By manipulating field localization and enhancement on the nanoparticle surface, these reactions can be induced, enhanced, and controlled. The study demonstrates all-optical nanoscopic control of surface reaction yields by tailoring the near fields on nanoparticles with waveform-controlled linear and bicircular two-color laser pulses. This work paves the way for reliable all-optical control of photocatalytic chemical reactions on nanoscale surfaces.
Article
Physics, Applied
Baha Khalil, Ganjaboy S. Boltaev, Aya Abu Baker, Naveed Abbasi, Ali S. Alnaser
Summary: This study investigates the formation of periodic surface structures on metal surfaces using ultrafast laser ablation. By changing the wavelength of the laser pulses, the periodicity of the structures can be tuned. The use of high-order harmonics allows for the generation of very fine periodic surface structures on nickel surfaces under ambient conditions.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Vadim Ialyshev, Ganjaboy Boltaev, Mazhar Iqbal, Mustafa Khamis, Ali S. Alnaser
Summary: This study investigates the effect of the surrounding gas environment on femtosecond laser-induced plasma at the gas-liquid interface. The results show that the plasma generated in air and N-2 environments can cause the formation of nitrate-based species in water. The findings reveal the mechanism of interaction between laser-induced plasma and water in a gaseous medium.
Article
Materials Science, Multidisciplinary
Piotr Piatkowski, Asghar Ali, Hussain Alawadhi, Ali S. Alnaser
Summary: This study investigates the changes in the structure and composition of bare titanium surface using femtosecond laser ablation in n-heptane environment. It demonstrates the formation of titanium carbide layer and the presence of high carbon concentration in the photoformed layer. Surprisingly, the synthesized ceramic layers also contain nitrided and oxidized species due to air transport during laser ablation. By adjusting the experimental conditions, it shows how to delicately control surface morphology and composition. The photoformed ceramic layers exhibit low cytotoxicity and improve corrosion inhibition efficiency compared to pristine Ti.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Vadim Sh. Yalishev, Naveed A. Abbasi, Mazhar Iqbal, Ali S. Alnaser
Summary: The design of membrane surfaces plays a crucial role in manipulating and controlling liquid transport. Janus membranes with opposite wettability characteristics were fabricated using copper foam and copper mesh. By treating one side of the membranes with a femtosecond laser beam, they exhibited excellent water diode properties. A titanium oxide coating was also applied to enhance durability, making the system effective for at least 60 days. This research has potential applications in high-precision drop control and water harvesting in arid environments.
Article
Chemistry, Physical
Asghar Ali, Piotr Piatkowski, Tahir Nawaz, Shahbaz Ahmad, Taleb Ibrahim, Mustafa Khamis, Ali S. Alnaser
Summary: A two-step femtosecond-pulsed laser deposition process is used to rapidly develop uniform and poreless amorphous coatings with high melting point source materials. The technique involves high-rate raw deposition followed by scanning with optimized fs laser pulses. This technique was applied to create substoichiometric molybdenum oxide coatings on mild steel, resulting in highly uniform and corrosion-resistant films.
Article
Materials Science, Multidisciplinary
Aya Abu Baker, Ganjaboy S. Boltaev, Piotr Piatkowski, Mustafa Khamis, Ali S. Alnaser
Summary: We investigate the wavelength-dependence of one-and two-photon absorption processes in Hibiscus sabdariffa organic dye excited by femtosecond laser pulses. The results show that the dye exhibits both negative and positive nonlinear absorption coefficients at different wavelengths. The transient absorption measurements reveal a short relaxation time associated with excited state proton transfer (ESPT) process.
Article
Engineering, Mechanical
Sharjeel Ahmed Khan, Joao Oliveira, Fabio Ferreira, Nazanin Emami, Amilcar Ramalho
Summary: The use of diamond-like carbon (DLC) coatings in dry machining of difficult-to-machine materials is becoming popular due to their high inertness, low coefficient of friction, and high hardness. However, the effect of surface roughness on the tribological properties of DLC coatings is often overlooked in the analysis of their performance. This article focuses on studying the impact of substrate surface roughness on the load-bearing capacity and tribological properties of DLC coatings deposited by High Power Impulse Magnetron Sputtering (HiPIMS) in Ne-Ar gas plasma. The results show that high surface roughness leads to increased wear rate, potential delamination of the coatings, and severe damage to the counterbody.
TRIBOLOGY TRANSACTIONS
(2023)
Article
Chemistry, Physical
Asghar Ali, Piotr Piatkowski, Ali S. Alnaser
Summary: This study investigates the mechanisms of laser-induced periodic surface structures (LIPSS) and quasi-periodic grooves on monocrystalline silicon (mono-Si) under different femtosecond laser conditions. The conditions for producing LIPSS-free complex micro-ridge patterns are explained, and the evolution mechanisms of LIPSS and different types of grooves are discussed. The results have implications for various materials, not just mono-Si.
Article
Chemistry, Multidisciplinary
Tahir Nawaz, Asghar Ali, Shahbaz Ahmad, Piotr Piatkowski, Ali S. Alnaser
Summary: We developed a robust two-step method using femtosecond laser to produce adherent and anticorrosive molybdenum coatings on an aluminum alloy substrate. The laser nanostructuring of the alloy created superhydrophilic microgrooves, which were further coated with a molybdenum layer using the fs-pulsed laser deposition technique. This combined approach of laser surface structuring and coating resulted in a highly corrosion-resistant surface with rough hierarchical oxide structures that passivated the surface and provided firm adhesion for the molybdenum coating.
Article
Chemistry, Physical
G. S. Boltaev, A. Abu Baker, A. S. Alnaser
Summary: This study investigates the laser-induced periodic surface structuring (LIPSS) under cryogenic conditions using a femtosecond fiber laser. The results show that the thermal properties of the substrate and the intensity of the laser beam affect the surface patterns formed. Materials with high thermal conductivity develop high-spatial frequency ripples on the surface at low temperatures, while materials with low thermal conductivity remain unaffected.
APPLIED SURFACE SCIENCE ADVANCES
(2023)
Article
Instruments & Instrumentation
Atiq Basha Kaligar, Hemnath Anandan Kumar, Asghar Ali, Wael Abuzaid, Mehmet Egilmez, Maen Alkhader, Farid Abed, Ali Sami Alnaser
Summary: This review summarizes the current advancements in femtosecond laser-based additive manufacturing of metals and alloys. It compares this technology with continuous-wave lasers and nanosecond/picosecond lasers in terms of heat-affected zones, substrate damage, microstructural changes, and thermomechanical properties. In addition, numerical predictions are discussed and compared with experimental results.
QUANTUM BEAM SCIENCE
(2022)