Article
Chemistry, Physical
Pablo Sanchez-Puga, Javier Tajuelo, Juan Manuel Pastor, Miguel A. Rubio
Summary: Developments in interfacial shear rheometers have improved the quality of experimental data, but data analysis remains an active area of research. Nonlinear velocity profiles are common in experimental geometries, requiring data analysis schemes based on the explicit calculation of the flow field.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Environmental
Sylvia Yang Liu, Matthew Ming-Lok Leung, James Kar-Hei Fang, Song Lin Chua
Summary: Plastics, especially microplastics, pose a significant threat to the environment as they are resistant to biodegradation and difficult to remove. Current removal techniques are not effective, necessitating the development of sustainable solutions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biotechnology & Applied Microbiology
Yi Wang, Xinru Zhang, Libo Guan, Zeyi Jiang, Xiaomin Gao, Siyuan Hao, Xinxin Zhang
Summary: In this study, a novel method to harvest microalgae biofilms by interfacial interactions was proposed and studied. The results showed that N. oculata and Chlorella sp. biofilms could be peeled off from substrates when immersed into liquids with surface tensions higher than 40 mJ center dot m-2. The use of saline was found to be suitable for peeling off microalgae biofilms and maintaining their stable structure.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Chemistry, Multidisciplinary
Tasha A. Jarisz, Christopher D. Hennecker, Dennis K. Hore
Summary: In this study, a label-free vibrational probe with a nanometer length scale reveals that the electrostatic potential at a silica surface gradually increases in the presence of bacteria in solution. The cells themselves are not responsible for this effect, but they alter the interfacial chemical environment in a way that reduces the ionic strength.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Qiuting Zhang, Danh Nguyen, Jung-Shen B. Tai, Xj Xu, Japinder Nijjer, Xin Huang, Ying Li, Jing Yan
Summary: Biofilms are communities of bacterial cells embedded in an extracellular matrix (ECM) and exhibit remarkable mechanical resilience. The study on Vibrio cholerae biofilms demonstrates the key role of the ECM polymeric network in protecting cells from environmental challenges. These findings provide physical insights for designing biofilm removal strategies or engineering beneficial soft materials in dynamic environments.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Friedrich von Hoessle, Mayar Mohamed, Reham Farid, Rawia M. Hammouda, Fritz E. Kuhn, Ghada Bassioni
Summary: A wide range of dispersants with different dosages were used to prepare magnesium hydroxide aqueous suspensions. The study investigated the effect of dispersant types and dosages on the rheological behavior and stability of the suspensions, with Calcium lignosulfonate (Ca-lig) showing the most significant enhancement in viscosity and flowability, along with a decrease in pH. Insights gained from this study can help optimize important application processes.
AIN SHAMS ENGINEERING JOURNAL
(2021)
Article
Materials Science, Characterization & Testing
Younes El Omari, Mohamed Yousfi, Jannick Duchet-Rumeau, Abderrahim Maazouz
Summary: The development of a new high temperature resistant interfacial rheology setup has enabled direct measurement of polymer-polymer interface at temperatures up to 200 degrees C. This allows for exploration of surface/interfacial properties of model fluids with different structures and viscoelastic characteristics, as well as the testing of molten semicrystalline polymer systems for the first time. Additionally, a new lightweight titanium based biconical geometry was designed to enable more sensitive measurement of interfacial rheological properties.
Article
Multidisciplinary Sciences
Yuanyuan Zhang, Guangming Zhu, Biqin Dong, Feng Wang, Jiaoning Tang, Florian J. Stadler, Guanghui Yang, Shuxian Hong, Feng Xing
Summary: Three-dimensional (3D) nanocomposite (NC) printing is a major approach to translate nanomaterial physical properties into 3D geometries, but lacks control over nanomaterial connection. Viscoelastic Pickering emulgels have been developed as NC inks to address this issue by jamming nanomaterials on interfaces and in continuous phase.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Pablo Sanchez-Puga, Javier Tajuelo, Juan Manuel Pastor, Miguel A. Rubio
Summary: This paper presents a detailed analysis of the quantitative improvements of flow field-based data analysis techniques in the rotational oscillating bicone bob interfacial shear rheometer. By comparing the structure of flow fields, differences in drag torques, and differences in torque/displacement complex amplitude ratio, the study demonstrates the enhancements of the new scheme over the previous one.
COLLOIDS AND INTERFACES
(2021)
Article
Chemistry, Physical
Rafal Kozera, Anna Boczkowska, Zuzanna D. Krawczyk, Paulina Kozera, Maciej Spychalski, Marcin Malek, Robert Kosturek
Summary: The main goal of this study was to evaluate the interfacial strength of carbon fibres/aluminium matrix interface based on different composite fabrication methods, and to investigate the influence of a Ni-P coating on the C-fibres. The interfacial strength of the samples fabricated using the high-pressure infiltration method was measured using the push-out method.
Article
Chemistry, Physical
Santiago F. Velandia, Diego Ramos, Maud Lebrun, Philippe Marchal, Cecile Lemaitre, Veronique Sadtler, Thibault Roques-Carmes
Summary: The relationship between interfacial and bulk emulsion viscoelasticity was investigated in water-in-dodecane reverse Pickering emulsions stabilized with partially hydrophobic silica particles. The results showed that silica and NaCl concentrations affect the viscoelastic properties of the emulsions, with a correlation between the elastic modulus and silica concentration. Increasing the NaCl concentration strengthened the viscoelastic properties of the emulsions, and both silica and NaCl had similar effects on the interface and bulk viscoelastic properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Food Science & Technology
Matthias Funke, Remko Boom, Jochen Weiss
Summary: Dry fractionation is a promising method to obtain less refined protein ingredients from legumes, but the relationship between composition and functionality for use as emulsifiers in concentrated emulsions is still unclear. Different lentil fractions produced by dry fractionation had varying protein, starch, and fiber contents, as well as particle sizes, which affected the emulsion stability and rheological properties. The presence of non-protein particles in the emulsions was found to play a significant role in influencing the behavior of the emulsions.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Review
Chemistry, Physical
Beibei Zhou, John T. Tobin, Stephan Drusch, Sean A. Hogan
Summary: The interfacial properties of dairy proteins are of great interest to the food industry. Various environmental conditions and processes significantly affect the structure and stability of food materials. Further studies may help in designing better interfacial protein structures for different food applications.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2021)
Article
Food Science & Technology
Lijie Zhu, Yingyan Li, Jiakun Yu, He Liu, He Li, Xinqi Liu, Lei Chen, Guozhen Wang, Xiuying Liu, Wenping Ding
Summary: Thermosonication treatment can improve the emulsification properties of glycinin, reducing the size of protein particles and increasing the surface hydrophobicity index. It also enhances the stability of the emulsion by increasing the interfacial protein content and apparent viscosity, while reducing the adsorption pressure at the oil-water interface.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Tao Li, Ruipei Xie, Wei Chen, Andrew B. Schofield, Paul S. Clegg
Summary: This research presents a general strategy for creating complex HIPEs that can form interfacial films at liquid interfaces, achieving double HIPEs and Janus HIPEs for the first time. These materials exhibit unique properties and have the potential for wide application in biological processes.
Review
Microbiology
Fazlurrahman Khan, Priyanka Singh, Abhayraj S. Joshi, Nazia Tabassum, Geum-Jae Jeong, Nilushi Indika Bamunuarachchi, Ivan Mijakovic, Young-Mog Kim
Summary: This review discusses the antimicrobial properties of nisin and its derivatives, as well as various strategies employed to enhance its activity and stability. The underlying mechanisms of action and evolutionary relationships of nisin genes are also explored. The review provides valuable insights into the research on nisin as an antimicrobial agent.
CRITICAL REVIEWS IN MICROBIOLOGY
(2023)
Article
Polymer Science
Christos K. Georgantopoulos, Masood K. Esfahani, Ingo F. C. Naue, Manfred Wilhelm, Roland Kadar
Summary: The extrusion flow instabilities of two commercial polyethylenes (PE), both with similar weight average molecular weight, were characterized using capillary rheology, optical analysis, and modeling. The characteristic time periodicity τ* and spatial characteristic wavelength λ were obtained and compared using three different methods. It was found that both the characteristic time periodicity τ* and the spatial characteristic wavelength λ exhibit Arrhenius temperature-dependent behavior.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Biophysics
Omur Acet, Emrah Dikici, Burcu Onal Acet, Mehmet Odabasi, Ivan Mijakovic, Santosh Pandit
Summary: Microbial adhesion and formation of biofilms pose serious problems in various areas. Preventing microbial adhesion and biofilm formation is a promising strategy to address these issues. In this study, attaching EGCG to membranes effectively prevented bacterial colonization.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Shadi Rahimi, Teo Lovmar, Alexandra Aulova, Santosh Pandit, Martin Lovmar, Sven Forsberg, Magnus Svensson, Roland Kadar, Ivan Mijakovic
Summary: To combat bacterial infections in the post-antibiotic era, efforts are being made to engineer new materials with antibacterial properties. A new automated pipeline based on scanning electron microscopy images has been developed to predict the antibacterial potential of these materials. The density of sharp exposed edges of graphite-oriented nanoplatelets (GNPs) is a key factor in killing bacteria on contact.
Review
Engineering, Biomedical
Hengzhi Ruan, Alexandra Aulova, Viney Ghai, Santosh Pandit, Martin Lovmar, Ivan Mijakovic, Roland Kadar
Summary: To address the global threat of antimicrobial resistance, which is a common cause of healthcare-associated infections and imposes significant costs on healthcare systems, extensive research has been dedicated to developing polysaccharide-based strategies that prevent bacterial attachment and biofilm formation on surfaces. Polysaccharides, as essential building blocks for life and abundant renewable resources, have attracted attention for their intrinsic antibacterial activities. If efficiently transformed into antibacterial coatings for a wide range of surfaces and applications, polysaccharide-based coatings could have a substantial global impact. However, their ultimate success will depend on their potential for scalable, versatile, and affordable manufacturing processes.
ACTA BIOMATERIALIA
(2023)
Article
Chemistry, Multidisciplinary
Xin Chen, Santosh Pandit, Lei Shi, Vaishnavi Ravikumar, Julie Bonne Kohler, Ema Svetlicic, Zhejian Cao, Abhroop Garg, Dina Petranovic, Ivan Mijakovic
Summary: Alzheimer's disease is a common neurodegenerative disease characterized by the aggregation of misfolded amyloid-beta peptides in the brain. Graphene oxide nanoflakes have been found to effectively inhibit A beta aggregation in vitro. In this study using yeast as a model, it is shown that graphene oxide can penetrate yeast cells and reduce A beta 42 toxicity. The findings provide insights for designing graphene oxide-based therapies for attenuating cytotoxicity of A beta 42 and other misfolded proteins involved in neurodegenerative pathology.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Jian Zhang, Priyanka Singh, Zhejian Cao, Shadi Rahimi, Santosh Pandit, Ivan Mijakovic
Summary: The development of antibacterial coatings is important for preventing biofilm formation on medical devices. This study presents a simple method to fabricate antibacterial coatings by combining the properties of polydopamine and graphene oxide. The coatings successfully loaded with tetracycline and green-synthesized silver nanoparticles exhibited strong inhibitory effects on Staphylococcus aureus and Escherichia coli biofilms, with over 1000-fold reduction in biofilm formation. The results suggest that these coatings have potential as an approach to prevent infection associated with implantable biomedical devices.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Applied
Chonnipa Palasingh, Rupert Kargl, Karin Stana Kleinschek, Jana Schaubeder, Stefan Spirk, Anna Strom, Tiina Nypelo
Summary: Polysaccharides, including xylans from wood, can be processed into films. The solubility of xylans can be improved through oxidative cleavage of the saccharide ring. The degree of oxidation (DO) of xylans affects their solubility, film formation, and stability. High DO xylans showed the smallest hydrodynamic diameter and formed continuous films with significant moisture uptake.
CARBOHYDRATE POLYMERS
(2023)
Article
Energy & Fuels
Muthusankar Eswaran, Shadi Rahimi, Santosh Pandit, Bavatharani Chokkiah, Ivan Mijakovic
Summary: In this work, a flexible, multifunctional polyimide (PI)/Au-polyaniline (PAN)/Pd nanocomposite electrode with excellent electrochemical properties was fabricated. The electrode showed high conductivity, rapid response, and high electron transfer rate due to the strong metal-polymer interaction between PAN and Pd. It demonstrated successful biomedical sensing of glucose and electrooxidation of alcohols such as methanol and ethanol, making it promising for healthcare diagnostics and alternative energy conversion devices.
Article
Chemistry, Multidisciplinary
Zhejian Cao, Xiaozhi Fu, Hao Li, Santosh Pandit, Francoise M. Amombo Noa, Lars Ohrstrom, Aleksej Zelezniak, Ivan Mijakovic
Summary: This study successfully synthesized MOFs using enzymatically recycled PET, demonstrating the feasibility of this approach. Compared to conventional methods, this approach avoids the use of strong acids or bases and high temperatures, leading to reduced environmental and energy penalties.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
Roland Kadar, Ann Terry, Kim Nygard, Tiina Nypelö, Gunnar Westman, Sylwia Wojno, Reza Ghanbari, Mina Fazilati, Marko Bek, Amit Kumar Sonker
Summary: Hierarchical biomaterials play a crucial role in developing sustainable novel material systems. The challenge lies in controlling their assembly into hierarchical orders at different scales, especially in understanding the orientation dynamics. This study focuses on water-based suspensions of cellulose nanocrystals, but the findings can be applied to other nanostructured fluids as well.
NOVEL TRENDS IN RHEOLOGY IX
(2023)
Article
Nanoscience & Nanotechnology
Hengzhi Ruan, Marko Bek, Santosh Pandit, Alexandra Aulova, Jian Zhang, Philip Bjellheim, Martin Lovmar, Ivan Mijakovic, Roland Kadar
Summary: This study presents a facile approach of incorporating dopamine and [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide via in situ synthesis into gelatin hydrogels. The resulting hydrogels show exceptional antibacterial efficiency and multifunctional performance, making them highly promising for various biomedical applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)