Article
Chemistry, Analytical
Xue-song Shi, Yu-fan Zhao, Hong-ye Zhang, Xue-feng Xu
Summary: Recent progress in wettability-patterned microchips has facilitated ultra-trace detection in multiple biomedical and food safety fields. This paper reports an integrated design, fabrication, and evaporation strategy to avoid wettability transition and achieve high-performance surface-enhanced Raman scattering (SERS) detection.
Article
Chemistry, Physical
Tianwei Zhang, Fei Li, Lihong Kang, Jie Zhang
Summary: This study investigates the properties of droplet deposition and splitting dynamics on patterned surfaces through experimental visualization and numerical simulations. The research finds that droplets can be successfully split using hydrophobic/hydrophilic patterned surfaces, and the splitting, satelliting, and splashing modes of the droplets are influenced by the surface pattern geometry. The derived energy conservation model confirms the experimental and numerical findings that droplet deposition dynamics are determined by fluid properties and surface wetting characteristics.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Environmental
Qingqing Rao, Zheming Tong, Lina Song, Abid Ali, Yang Hou, Qinggang He, Jianguo Lu, Xiang Gao, Xiaoli Zhan, Qinghua Zhang
Summary: A photo-responsive slippery surface (G/NPGS) has been successfully fabricated based on silicon oil and graphene, enabling controllable wettability for applications in liquid manipulation and laboratory settings.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Xuan Li, Dong Feng, Lei Chen, Ding Weng, Chaolang Chen, Jiadao Wang
Summary: The use of a binary mixture during injection facilitated particles to migrate and self-assemble at an interface, with significant effects from ethanol and particle concentration. The self-assembly method allowed for high-coverage colloidal particle film formation at low concentrations, providing a theoretical basis for experimental and simulation studies.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Computer Science, Interdisciplinary Applications
Yuxi Xie, Shaofan Li, Xuan Hu, Dana Bishara
Summary: In this work, an adhesive surface hydrodynamics theory of moving contact line is developed by extending the Gurtin-Murdoch surface elasticity theory to a surface hydrodynamics theory. This theory combines a surface Newtonian hydrodynamics theory with a coarse-grained adhesive contact model, allowing the coupling of molecular scale adhesive interaction with macroscale fluid flow. The proposed theory achieves goals such as avoiding shear stress singularity, relating adhesive traction to surface tension and slip boundary condition, and considering viscous friction force during droplet dynamic contact process. The theory is validated through numerical simulations and shows good agreement with experimental and molecular dynamics results.
JOURNAL OF COMPUTATIONAL PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Cheng Qi, Xudong Ma, Junfeng Zhong, Jiangyu Fang, Yuanding Huang, Xiaokang Deng, Tiantian Kong, Zhou Liu
Summary: An important goal of bottom-up synthetic biology is to create tissue-like structures using artificial cells. By employing a capillary-driven approach inspired by the hanging drop method, we can assemble artificial cells into colonized tissue arrays. This method allows for precise control of the number, shape, and composition of interconnected compartments. Each module in the array can function as a processor, demonstrating the ability for fast molecular signal transport and biochemical sensing. Our work provides a scalable and programmable method for synthetic biology, tissue engineering, and high-throughput assays.
Article
Materials Science, Multidisciplinary
P. Wiewiorski, W. Strek, R. Tomala, M. Stefanski
Summary: This paper presents the self-construction ability of graphene microparticles, which can assemble into chains in methanol under an applied DC electric field. The mechanism of self-ordering is discussed in terms of charge separation in semi-conducting graphene particles. Silica hydrolysate is used to prepare thin coatings with fixed self-assembled graphene structures inside.
Article
Materials Science, Multidisciplinary
Xiaoming Xie, Xingyu Xu, Yulian Jiang
Summary: In this study, a solvent-free supramolecular adhesive driven by hydrogen-bonding interaction was developed. The adhesive exhibited strong adhesion, swelling resistance, and excellent bioactivity.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Dongdong Hu, Hua Lai, Zhongjun Cheng, Yingbin Song, Xin Luo, Dongjie Zhang, Zhimin Fan, Zhimin Xie, Yuyan Liu
Summary: A novel strategy was reported for reversible control of surface adhesion and droplet sliding through magnetic manipulation on superhydrophobic surfaces, achieved by integrating a certain size of NdFeB magnetic region and a hydrophobic SiO2 coating on the surface. The highly adhesive magnetic region can tightly pin a superparamagnetic droplet, and by applying an external magnet with opposite direction to the NdFeB magnetic region, in situ droplet sliding control is realized. The surface can regain high adhesion after removing the external magnet, demonstrating excellent controllability for on-demand storage/release control of different droplets on a surface with multiple magnetic regions.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yan-Xiang Li, Lei Xu, Shu-Ming Kang, Li Zhou, Na Liu, Zong-Quan Wu
Summary: This study prepared single-handed helical poly(phenyl isocyanide)s bearing pyrene and naphthalene probes, demonstrating interesting self-sorting properties driven by helicity and molecular weight in various states.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Optics
Caiding Ni, Zhaoxin Lao, Zhongguo Ren, Chao Chen, Dong Wu
Summary: Femtosecond laser and capillary force-driven self-assembly technology has been used to fabricate micro/nanostructures. In this study, we achieved reversible self-assembly of linear contact microstructures using temperature-responsive hydrogels, expanding the application range of microstructures.
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG
(2023)
Letter
Nursing
Ling-ling Zhu, Quan Zhou
JOURNAL OF CLINICAL NURSING
(2023)
Article
Materials Science, Multidisciplinary
Sourov Chandra, Alice Sciortino, Shruti Shandilya, Lincan Fang, Xi Chen, Nonappa, Hua Jiang, Leena-Sisko Johansson, Marco Cannas, Janne Ruokolainen, Robin H. A. Ras, Fabrizio Messina, Bo Peng, Olli Ikkala
Summary: This study presents a new strategy for in situ site-selective Ag-doping at the central core of AuNCs using sulphated colloidal surfaces as templates. This approach greatly improves the photoluminescence quantum efficiency of AuNCs by eliminating nonradiative losses.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Physics, Multidisciplinary
Fei Lou, Xiangpeng Cui, Xinyue Sheng, Chunyan Jia, Shuaiyi Zhang, Xia Wang, Vladislav Khayrudinov, Baitao Zhang, Shande Liu, Wing Yim Tam, Harri Lipsanen, He Yang, Jingliang He
Summary: Various nanophotonic devices based on semiconductor wires with a diameter of several ten nanometers have been studied. The optoelectronics properties and performance of devices based on large-diameter wires were explored by growing micronsized indium antimonide (InSb) wires and examining their nonlinear optical properties within the wavelength range of 0.8-2.8 μm. The InSb microwires (MWs) were shown to work as an effective and robust optical switch within 1-2.8 μm wavelength, opening up possibilities for research on more large-diameter MWs made from other semiconductor materials for photonic and electronic devices.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2023)
Article
Chemistry, Multidisciplinary
William S. Y. Wong, Mariia S. Kiseleva, Shaochen Zhou, Muhammad Junaid, Leena Pitkanen, Robin H. A. Ras
Summary: This study investigates the scalable room-temperature synthesis of stochastic nanoparticle surfaces with fluoro-free moieties. It demonstrates that both hydrocarbon- and dimethyl-silicone-based functionalization can achieve super-liquid-repellency without the need for perfluoroalkyls. Key guidelines are provided for achieving functional yet sustainably designed super-liquid-repellency.
ADVANCED MATERIALS
(2023)
Article
Physics, Multidisciplinary
Davide Riccobelli, Hedar H. Al-Terke, Paivi Laaksonen, Pierangelo Metrangolo, Arja Paananen, Robin H. A. Ras, Pasquale Ciarletta, Dominic Vella
Summary: We report surprising morphological changes of suspension droplets during evaporation, which are influenced by the presence of the hydrophobin protein HFBI. The formation of an elastic film occurs when the concentration of the solute reaches a critical value, resulting in different morphologies for pendant and sessile droplets. A gravito-elastocapillary model explains these differences and predicts droplet morphology and shape changes, highlighting the importance of gravity even for small droplets. These findings have implications for engineering and biomedical applications involving droplet shape control.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Shaochen Zhou, Lotta Gustavsson, Gregory Beaune, Sourov Chandra, Jukka Niskanen, Janne Ruokolainen, Jaakko V. I. Timonen, Olli Ikkala, Bo Peng, Robin H. A. Ras
Summary: This work presents a general and efficient method to synthesize pH-responsive near-infrared (NIR) emitting gold nanoclusters by introducing aliphatic tertiary amine (TA) groups as ligands. The pH-responsive NIR emission is achieved through the protonation and deprotonation of TA groups, which induce electronic structure changes. The pH-responsive gold nanoclusters can serve as specific and sensitive probes for lysosomes in cells, offering non-invasive emissions without interference from intracellular autofluorescence.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Electrical & Electronic
Arthur Vieira, Quan Zhou
Summary: We report a high-sensitivity multimodal force-sensing transparent droplet probe for characterizing superhydrophobic surfaces, allowing simultaneous visualization of the wetting interface and measurement of interaction forces. The probe consists of a transparent glass cantilever with a droplet probe attached, which directly images the wetting interface and measures forces simultaneously. By combining top view, side view, and high-resolution force sensing, the probe can reveal force contributions from both surface tension and Laplace pressure and measure super-repellent surfaces with contact angles near 180 degrees with a low experimental uncertainty of 0.5 degrees.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Physical
Alexander B. Tesler, Stefan Kolle, Lucia H. Prado, Ingo Thievessen, David Boehringer, Matilda Backholm, Bhuvaneshwari Karunakaran, Heikki A. Nurmi, Mika Latikka, Lena Fischer, Shane Stafslien, Zoran M. Cenev, Jaakko V. I. Timonen, Mark Bruns, Anca Mazare, Ulrich Lohbauer, Sannakaisa Virtanen, Ben Fabry, Patrik Schmuki, Robin H. A. Ras, Joanna Aizenberg, Wolfgang H. Goldmann
Summary: This study developed aerophilic titanium alloy surfaces with thermodynamically stabilized plastrons for antifouling applications. The surfaces have long-term stability and effectively reduce adhesion and contamination.
Article
Chemistry, Analytical
Yifan Zhao, He Yang, Vladislav Khayrudinov, Harri Lipsanen, Xinyang Su, Mei Qi, Baole Lu, Ningfang Song
Summary: We demonstrated a flexible monolithic saturable absorber (SA) for broadband optical modulation, which was prepared by growing GaAs nanowires on a polyimide substrate. The SA showed good linear and nonlinear optical properties, making it suitable for applications such as optical switches. Experimental results showed that the SA achieved efficient laser modulation at 1.0 and 1.5 μm wavelengths.
Article
Chemistry, Multidisciplinary
Abde Mayeen Shafi, Md Gius Uddin, Xiaoqi Cui, Fida Ali, Faisal Ahmed, Mohamed Radwan, Susobhan Das, Naveed Mehmood, Zhipei Sun, Harri Lipsanen
Summary: A deterministic method is proposed to improve the performance of MoTe2 devices by inducing local tensile strain through substrate engineering and encapsulation processes. The approach involves creating hole arrays in the substrate and using atomic layer deposition grown Al2O3 as an additional back-gate dielectric layer on SiO2. This study presents a novel technique to enhance carrier mobility in MoTe2 FETs, offering promising prospects for improving 2D material performance in electronic applications.
Article
Automation & Control Systems
Kyriacos Yiannacou, Veikko Sariola
Summary: Acoustic manipulation is a technique that uses sound waves to move particles, droplets, or cells. A new adaptive control method is proposed in this article, based on online machine learning of the acoustic fields. The controller can manipulate particles even on the first attempt and improve its performance through subsequent attempts, while still being able to readapt to sudden changes in system parameters. The online adaptiveness of the controller makes it easier to use in practical applications without extensive training or prior models.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Chemistry, Physical
Arthur Vieira, Wenjuan Cui, Ville Jokinen, Robin H. A. Ras, Quan Zhou
Summary: Many natural and artificial water-repellent surfaces have micro- and nano-roughness and their wetting properties can be determined by observing the contact angles at the liquid-solid interface. However, a generally applicable method to directly observe the moving contact lines on such surfaces is missing. In this study, we demonstrate that a transparent droplet probe combined with a conventional optical microscope can accurately quantify the contact angles and contact area on water-repellent surfaces.
Correction
Chemistry, Multidisciplinary
Liwei Chen, Shilin Huang, Robin H. A. Ras, Xuelin Tian
NATURE REVIEWS CHEMISTRY
(2023)
Proceedings Paper
Computer Science, Interdisciplinary Applications
Houari Bettahar, Vieira Arthur, Quan Zhou
Summary: This paper proposes an accurate online gel dispensing method for accurately dispensing sessile droplets on top of the dispenser tip for highly repeatable fiber threading. The method utilizes visual servoing and adaptive model predictive control, and the experimental results show that fibers fabricated using this method have the highest repeatability.
2023 IEEE 47TH ANNUAL COMPUTERS, SOFTWARE, AND APPLICATIONS CONFERENCE, COMPSAC
(2023)
