Article
Chemistry, Multidisciplinary
Bin Zhao, Maryam Borghei, Tao Zou, Ling Wang, Leena-Sisko Johansson, Johanna Majoinen, Mika H. Sipponen, Monika Osterberg, Bruno D. Mattos, Orlando J. Rojas
Summary: Carbon supraparticles with hierarchical porous structures are synthesized from lignin and cellulose nanofibrils. These carbon SPs exhibit high mechanical strength, large surface area, and excellent CO2 adsorption capabilities with low pressure drop, addressing limitations in mass transport and kinetics often found in nanoparticle-based systems. Additionally, the carbon SPs do not require heteroatom doping for effective CO2 uptake and can be easily regenerated for multiple adsorption/desorption cycles, making them cost-effective and highly efficient for gas sorption and capture.
Article
Multidisciplinary Sciences
Junwei Wang, Jan Schwenger, Andreas Stroebel, Patrick Feldner, Patrick Herre, Stefan Romeis, Wolfgang Peukert, Benoit Merle, Nicolas Vogel
Summary: Colloidal supraparticles are finite, spherical assemblies of many primary particles. Their mechanical properties are found to be size-dependent, with deformation resistance inversely scaling with primary particle diameter. Engineering supraparticles to dissipate more energy via deformation of primary particles can enhance stability.
Article
Chemistry, Multidisciplinary
Lijun Thayyil Raju, Olga Koshkina, Huanshu Tan, Andreas Riedinger, Katharina Landfester, Detlef Lohse, Xuehua Zhang
Summary: Our study demonstrates that the size of colloidal particles determines the shape of supraparticles. By comparing supraparticles made of different sized silica particles and mixtures of small and large particles, we found that colloidal particles form a flexible shell at the rapidly moving interfaces of evaporating droplets.
Article
Nanoscience & Nanotechnology
Ashley Lamb, Fengjie He, Shengjie Zhai, Hui Zhao
Summary: Silk fibroin-produced supraparticles have high biocompatibility and biodegradability for various biomedical applications. Utilizing the Ouzo droplet evaporation strategy is an environmentally friendly approach to fabricate three-dimensional supraparticles and address the coffee ring effect.
Article
Materials Science, Multidisciplinary
Ziying Hu, Hao Sun, Matthew P. Thompson, Ming Xiao, Michael C. Allen, Xuhao Zhou, Qing Zhe Ni, Zhao Wang, Weiyao Li, Michael D. Burkart, Dimitri D. Deheyn, Ali Dhinojwala, Matthew D. Shawkey, Nathan C. Gianneschi
Summary: The study presents a method to synthesize supraparticles via self-assembly, which play a critical role in mechanical stability and solvent compatibility. By employing a crosslinking strategy to lock supraparticle building blocks, stable multicolor photonic supraparticles are produced, suitable for applications in painting media and inks.
ACS MATERIALS LETTERS
(2021)
Article
Chemistry, Physical
James D. Tinkler, Alberto Scacchi, Harsh R. Kothari, Hanna Tulliver, Maialen Argaiz, Andrew J. Archer, Ignacio Martin-Fabiani
Summary: In this study, films segregated by size in the vertical direction were fabricated through the self-assembly of aqueous binary latex/silica particle blends during drying. Ternary films containing additional small latex particles showed improved surface stability and abrasion resistance compared with binary films. The formation of various silica superstructures at the film surface was attributed to a combination of diffusio-phoresis and electrostatic interactions between particles, as supported by Brownian dynamics simulations.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Si Li, Xiao Guo, Maozhong Sun, Aihua Qu, Changlong Hao, Xiaoling Wu, Jun Guo, Chuanlai Xu, Hua Kuang, Liguang Xu
Summary: Nanotechnology has significantly advanced biological systems by leveraging the distinct properties of nanostructures, particularly the self-limiting self-assembly of supraparticles for creating biomimicking nanostructures with desired functionalities. This review highlights recent developments and achievements in colloidal supraparticles, emphasizing their application values in biological systems.
Article
Chemistry, Multidisciplinary
Johannes Strobl, Fanny Kozak, Meder Kamalov, Daniela Reichinger, Dennis Kurzbach, Christian F. W. Becker
Summary: The article discusses the limitations of mimicking biological materials and introduces a peptide library that enables the design of biomimetic materials. It explains that the formation of biomaterials is governed by self-assembling precursors, and these precursors can be manipulated to control the morphology of silica particles. The study uses residue-resolved real-time NMR spectroscopy and molecular dynamics simulations to understand the atomistic details of the templates.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Physical
Xibo Yan, Julien Bernard, Francois Ganachaud
Summary: Polymeric nanoparticles are important functional nanomaterials with various shapes and inner morphologies, which can be precisely controlled using the nanoprecipitation technique. This technique allows for the fabrication of a wide range of polymeric nanostructures, including equilibrium and out-of-equilibrium morphologies, as well as core-shell structures. New directions are proposed to further expand the scope and potential achievements of this process.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Rachel S. Hendley, Lechuan Zhang, Michael A. Bevan
Summary: We report a controlled interfacial assembly and reconfiguration method for rectangular prism colloidal particles between microstructures with varying positional and orientational order. By programming time-dependent electric fields, we can manipulate the particle's position, orientation, compression, and chaining. We have identified a set of order parameters that define each state, and used them as reaction coordinates to capture the microstructure evolution. The trajectory manifolds between states reveal a dynamic pathway map that provides information about pathway accessibility, reversibility, and kinetics. By navigating this dynamic pathway map, we can achieve reconfiguration between states on minute time scales, which is useful for particle-based materials processing and device responses. Our findings demonstrate a conceptually general approach to control the assembly and reconfiguration of self-organizing building blocks that respond to global external stimuli.
Article
Chemistry, Multidisciplinary
E. Deniz Eren, Mohammad-Amin Moradi, Mark M. J. van Rijt, Bernette M. Oosterlaken, Heiner Friedrich, Gijsbertus de With
Summary: Controlling the assembly and morphology of nanoscale functional building blocks is crucial for hybrid and porous nanomaterials. In this paper, we discuss the self-assembly of a wide range of supraparticles, labeled as AB particles, and an extension to novel ternary particles, labeled as ABC particles, by combining different spherical nanoparticles with various size ratios in a hierarchical assembly process. By controlling the electrostatic interactions and concentrations between organic and inorganic nanoparticles, we were able to achieve hierarchically ordered, stable supraparticles with complete or partial coverage. We used cryo-electron tomography to visualize and determine the structural characteristics of the binary and ternary supraparticles formed under different conditions.
MATERIALS HORIZONS
(2022)
Article
Chemistry, Multidisciplinary
Cicely Shillingford, Brandon M. Kim, Marcus Weck
Summary: Capillary assembly of liquid particles (CALP) is a microfabrication strategy for engineering arbitrarily shaped polymer colloids. CALP demonstrates versatility by engineering geometrically diverse Janus and patchy colloids using consecutive assembly and heterogeneous coassembly. It enables the design and fabrication of colloids with complex internal construction to target hierarchical functional materials, with the potential for further processing into colloid-based microscale devices.
Article
Chemistry, Multidisciplinary
Nankai An, Xi Chen, Mingxin Zheng, Jinying Yuan
Summary: Monodisperse fluorinated nanospheres with regulated diameter (100-200 nm) and low PDI (<0.05) were prepared through polymerization-induced self-assembly (PISA). Colloidal self-assembly induced by solvent evaporation formed mono/multilayered 2D and large-scale ordered 3D lattices. This work demonstrates the promising application of PISA in colloidal self-assembly.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
E. Sumeyra Turali-Emre, Ahmet E. Emre, Drew A. Vecchio, Usha Kadiyala, J. Scott VanEpps, Nicholas A. Kotov
Summary: Self-assembled multicompartment supraparticles (mSPs) are formed from FeS2 nanoparticles (NPs) stabilized by l-cysteine. These mSPs contain approximately 340 interconnected compartments with an average size of approximately 5 nm, encapsulating biological cargo such as DNA. The temperature stability of the DNA cargo is enhanced compared to traditional delivery vehicles, making biomimetic compartmentalized particles a promising tool for various bioapplications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Susana Marin-Aguilar, Fabrizio Camerin, Marjolein Dijkstra
Summary: The assembly of colloidal cubic diamond is a challenging process. This study explores the conditions for the nucleation of cubic diamond, focusing on the effect of depletion and DNA-mediated interactions. The study finds that a specific balance between the strength and range of depletion interactions enhances the self-assembly of stable cubic diamond.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Julian Heuer, Thomas Kuckhoff, Rong Li, Katharina Landfester, Calum T. J. Ferguson
Summary: The production of photocatalytic self-assembled amphiphilic polymers enables selective control over reactions based on the substrate's physical properties. By polymerizing benzothiadiazole-based photocatalysts into hydrophilic or hydrophobic compartments, we achieved stark differences in reactivity for polar substrates but similar performance for hydrophobic substrates. Additionally, the use of secondary swelling solvents led to a significant increase in conversion for a radical carbon-carbon coupling reaction.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Cyrine Ayed, Jie Yin, Katharina Landfester, Kai A. I. Zhang
Summary: Using photocatalytic oxidation to convert basic chemicals into high value compounds in environmentally benign reaction media is a current focus in catalytic research. The challenge of gaining controllability over product formation selectivity was addressed by designing covalent triazine frameworks as recyclable photocatalysts. Controlled selectivity was achieved by activating or deactivating specific photogenerated oxygen species. This study demonstrates a promising approach for achieving switchable product formation selectivity for challenging oxidation reactions in pure water.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Mechanics
Rui Yang, Christopher J. Howland, Hao-Ran Liu, Roberto Verzicco, Detlef Lohse
Summary: This study numerically investigates the melting process of a solid layer heated from below and finds that thermal convection leads to increased roughness of the interface, which is coupled to the flow topology. The structure of the interface coincides with the regions of rising hot plumes and descending cold plumes, and the roughness amplitude scales with the mean height of the liquid layer.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Mechanics
Mogeng Li, Detlef Lohse, Sander G. Huisman
Summary: We experimentally investigated the evaporation of highly volatile liquid droplets (Novec 7000 Engineered Fluid, HFE-7000) in a turbulent spray. The droplets were produced by a spray nozzle and injected into a purpose-built chamber filled with air containing varying amounts of water vapor. The results showed that water condensation occurred on the rapidly evaporating droplets, and a more humid environment led to faster evaporation and more water condensation. An analytical model based on Fick's law was used to quantitatively explain the data.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Multidisciplinary Sciences
Luuk J. Blaauw, Detlef Lohse, Sander G. Huisman
Summary: Using the Taylor-Couette geometry, we studied the impact of salt on drag reduction caused by bubbles in the flow. The drag reduction was found to decrease as the salt concentration increased, from 40% in fresh water to 15% in sea water. The presence of salts inhibited coalescence events, resulting in smaller bubbles and decreased drag reduction.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Rong Li, Julian Heuer, Thomas Kuckhoff, Katharina Landfester, Calum T. J. Ferguson
Summary: Pseudo-homogeneous polymeric photocatalysts are efficient and tunable materials with easily accessible catalytic centers. Creating highly efficient photocatalytic materials that can be separated and recovered quickly is a critical challenge. This study presents pH-responsive photocatalytic nanoparticles that are active and well-dispersed under acidic conditions but aggregate upon pH elevation, allowing easy recovery. These responsive photocatalytic polymers can be used in various transformations and can accelerate the reaction rate of anionic substrates.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Mechanics
Haichang Yang, Binglin Zeng, Xuehua Zhang, Yaowen Xing, Xiahui Gui, Yijun Cao
Summary: Enhancing boundary slip using interfacial nanobubbles (INBs) has been extensively studied in nanofluidic transport. This study investigates the influence of INBs on boundary conditions for both smooth and rough substrates using molecular dynamics simulations. The results show that INBs increase the slip length on a smooth substrate, with a linear increase observed with increasing surface coverage. On a rough substrate, the protrusion angle, quantity, and fluidity of INBs play a crucial role in determining the slip length. In addition, the fluidity of gas molecules inside the INBs dominates the enhancement of slip length.
Article
Chemistry, Multidisciplinary
Kaiyu Zhou, Vincent Maugard, Wenming Zhang, Joe Zhou, Xuehua Zhang
Summary: Recent developments in ultrafine bubble generation have opened up new possibilities for applications in various fields. This study investigated the effects of substances in water on the size distribution and stability of microbubbles generated by a nanobubble generator. The results showed that air injection generated more microbubbles (<10 μm) compared to CO2 injection. Increasing detergent concentration led to a rapid increase in the number of microbubbles generated, while salts in water did not significantly affect the number or size distribution of bubbles. The presence of oil in water increased the intensity signal and resulted in bubbles coated with an oil layer.
Article
Physics, Applied
Maaike Rump, Uddalok Sen, Roger Jeurissen, Hans Reinten, Michel Versluis, Detlef Lohse, Christian Diddens, Tim Segers
Summary: In practical applications of inkjet printing, the intermittent idle periods of printhead nozzles lead to evaporation of ink from the nozzle exit. This evaporation results in concentration gradients within the multicomponent inks, which can directly and indirectly affect the jetting process, reproducibility, and print quality. This study investigates selective evaporation of water-glycerol mixtures from an inkjet nozzle through experiments, analytical modeling, and numerical simulations. The research sheds light on the complex physiochemical hydrodynamics associated with ink drying at printhead nozzles and contributes to the stability and reproducibility of inkjet printing.
PHYSICAL REVIEW APPLIED
(2023)
Review
Biochemistry & Molecular Biology
Jenny Schunke, Volker Mailaender, Katharina Landfester, Michael Fichter
Summary: Finding a long-term cure for tumor patients remains challenging. Immunotherapies show promise by activating the immune system against tumors and modulating the tumor microenvironment. However, current methods often fail to sufficiently activate the immune system and have limitations such as drug degradation and non-specific uptake. Encapsulating immunomodulatory molecules into nanocarriers offers a solution by protecting cargo and targeting uptake by antigen-presenting cells. This approach allows for versatile immune system stimulation and improved anti-tumor responses with reduced toxicity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Mechanics
You-An Lee, Detlef Lohse, Sander G. Huisman
Summary: We experimentally investigate the early-stage scalar mixing and transport with solvent exchange in a quasi-2D jet. Different modes of fluid supply, continuous injection and finite volume injection, are studied to analyze the starting jet and puff behaviors. The results show that the lack of continuous fluid supply in the puff leads to different characteristics in transport, entrainment, mixing, and nucleation.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2023)
Article
Mechanics
Nikolas O. Aksamit, Robert Hartmann, Detlef Lohse, George Haller
Summary: Mathematical developments in the theory of objective coherent structures have improved our understanding of the material organization of complex fluid flows. However, there is limited investigation into these objectively defined transport barriers in 3-D unsteady flows with complicated spatiotemporal dynamics. Our study utilizes simulations to uncover the interplay between different types of barriers in turbulent rotating Rayleigh-Bénard convection.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Chemistry, Multidisciplinary
Binglin Zeng, Tanay Kumar, Hongyan Wu, Shane Stark, Hassan Hamza, Hongying Zhao, Haolan Xu, Xuehua Zhang
Summary: Solar interfacial evaporation (SIE) is a clean and sustainable solution to water scarcity, wastewater decontamination, and steam sterilization. However, the process of salt crystallization on photothermal materials used in SIE has not been fully understood. This study investigates the temporal and spatial evolution of salt crystals on the photothermal layer during SIE, revealing that salt crystallization always initiates from the edge of the evaporation surface. The results suggest that compact crystal structures may emerge from the recrystallization of salt in an initially porous structure.
Article
Chemistry, Multidisciplinary
Binglin Zeng, Haichang Yang, Ben Bin Xu, Detlef Lohse, Xuehua Zhang
Summary: According to Archimedes' principle, a submerged object with a lower density is more buoyant than a smaller one. In this study, a remarkable phenomenon is reported where a dissolving drop on a surface rises in water only after it has diminished to a smaller size. This phenomenon is controlled by the stick-jump behavior during drop dissolution and the Archimedes number greater than 1, signifying that buoyancy overcomes the viscosity of the surrounding medium. The study suggests that this novel mechanism for programmable drop rise may have important applications in microfluidics, microrobotics, and device engineering.
Article
Mechanics
Qi Wang, David Goluskin, Detlef Lohse
Summary: Two-dimensional horizontally periodic Rayleigh-Benard convection between stress-free boundaries can exhibit two distinct types of states: roll states and windy states. Roll states consist of pairs of counter-rotating convection rolls, while windy states are dominated by a strong horizontally sheared wind that suppresses convection rolls. Windy states only occur when the Rayleigh number is sufficiently above the onset of convection.
JOURNAL OF FLUID MECHANICS
(2023)
