Article
Nanoscience & Nanotechnology
Jing Lin, Zhen Yao, Minmin Xiong, Jin Lin, Fei Hu, Xinchuan Wei, Songyin Huang
Summary: This research develops a Janus membrane with structural and wettability gradients that can stop bleeding, resist blood extravasation, and realize directional transportation of drugs to promote wound healing. The membrane absorbs water from blood via the superhydrophilic layer, promoting blood clotting and preventing blood permeation. The membrane's gradient design allows for directional transportation of drugs. The incorporation of chitosan and silver gives the membrane antibacterial properties. Experimental results show that the membrane can accelerate wound healing and reduce scar size.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jiawei Ji, Yunlong Jiao, Qingrui Song, Yan Zhang, Xiaojun Liu, Kun Liu
Summary: The study introduces a geometry-gradient slippery surface (GGSS) based on aluminum alloy materials that enables directional self-transport and antigravity self-transport of liquid droplets. The mechanism is explored through the competition between Laplace pressure-induced driving force and viscous resistance-induced adhesive force for liquid directional self-transport.
Article
Mechanics
Lijun Sun, Dengwei Jing
Summary: In this study, a method is proposed to control the self-propelling dynamics of droplets using a continuous wettability gradient via molecular dynamics simulation. The effects of single gradient, continuous gradient, and nonlinear complex wetting gradient on droplet motion are investigated. The results show that the droplet motion can be driven in a directional way by designing the wetting gradient surface.
Article
Engineering, Chemical
Imdad Uddin Chowdhury, Pallab Sinha Mahapatra, Ashis Kumar Sen
Summary: Passive droplet manipulation can be achieved by creating a wettability gradient on surfaces, and 3D numerical simulations were performed to analyze droplet motion on a broad range of wettability gradient surfaces. The droplet shape at a particular non-dimensional time was found to be identical on different surfaces, despite being at various locations at a fixed time. Further exploration into the physics behind this identical droplet shape formation is proposed, along with a correlation for the dependence of this phenomenon on various geometrical parameters and fluid properties.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Analytical
Ying Jun Ren, Sang Woo Joo
Summary: In this study, a finite-volume method based on OpenFOAM was used to numerically investigate the migration of viscoelastic droplets on rigid surfaces with wettability gradients. The parameters studied included droplet size, relaxation time, solvent viscosity, and polymer viscosity. The results showed that the wettability gradient induced spontaneous migration of viscoelastic droplets from hydrophobic to hydrophilic regions on the substrate. The migration speed and distance of the droplets increased with an increase in the Weissenberg number and droplet size. However, an increase in polymer viscosity resulted in an increase in migration speed but a decrease in migration distance.
Article
Nanoscience & Nanotechnology
Zhongjian Zhang, Yong Qi, Wei Ma, Shufen Zhang
Summary: This study prepared bilayer directional bending structural color actuators with visible color changes based on the hydrophilic differences, using photonic crystals as carriers. By controlling the hydrophilicity differences of top and bottom inverse opal, directional bending effect was achieved. The different wettability led to various optical responses and swelling performances, realized through water infiltration and capillary evaporation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Chenrui Li, Beomsu Kim, Jonghun Yoon, Soumyadip Sett, Junho Oh
Summary: This comprehensive review summarizes previous research and emphasizes the structures and working principles of directional wetting surfaces. Researchers have employed different strategies to manipulate the wetting behavior of liquids through both passive and active control mechanisms. Passive directional transport surfaces enable large-scale and continuous fluid control, while active directional wetting surfaces offer flexibility and precise control of liquid movement.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Optics
N. N. Shchedrina, S. Kudryashov, M. K. Moskvin, G. Odintsova, I. Krylach, P. A. Danilov, A. G. Bondarenko, E. A. Davydova, M. Fokina, R. O. Olekhnovich, M. Uspenskaya, V. P. Veiko
Summary: Topography-dependent tuning of water wettability on a stainless steel surface was achieved through nanosecond-laser pulses at different fluences, with minimal contribution from surface chemical modification. Adjacent surface spots with different wettabilities were shown to drive autonomous directional water flow. A series of elementary microfluidic devices based on spatial wetting gradients were designed and tested as building blocks for green, energy-saving autonomous microfluidic circuits.
Article
Nanoscience & Nanotechnology
Xiaoyan Yu, Hua Lai, Hongjun Kang, Yuyan Liu, Youshan Wang, Zhongjun Cheng
Summary: This study reports the directional self-transportation of water droplets in oil using a TiO2-coated conical spine. By increasing the surface hydrophilicity and utilizing the Laplace force caused by the conical gradient structure, the self-transportation is achieved. The findings of this study provide new ideas for designing new superwetting self-transportation materials.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Shizhi Ye, Shuqi Lei, Xiuliang Liu, Deqiang He, Yanjun Chen
Summary: Evaporation of droplets on inclined surfaces is common in engineering and understanding and enhancing its characteristics is necessary. Previous studies have shown that electric fields can enhance evaporation on horizontal surfaces, but the characteristics on inclined surfaces are different. Experimental investigations on droplet evaporation at different inclinations and electric field conditions reveal that electric fields greatly enhance evaporation on inclined surfaces, with better effects than on horizontal surfaces. The direction switching frequency of the electric field has different effects on the evaporation rate, and increasing the electric field strength continuously enhances the evaporation rate. The droplet evaporation pattern on inclined surfaces is not affected by the electric field, but internal vortex flow and heat transfer efficiency are enhanced. The droplet oscillation disappears after an inclination angle larger than 10 degrees.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Nanoscience & Nanotechnology
Jing Zheng, Biao Yang, Hujun Wang, Liucheng Zhou, Zhihui Zhang, Zhongrong Zhou
Summary: In this study, reversible wettability transition between superhydrophobicity and superhydrophilicity on zirconia ceramic surfaces was achieved by laser ablation. The mechanisms underlying the complex wettability transitions were elucidated, and the surfaces showed promising applications for on-demand droplet manipulation under harsh conditions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Dongdong Xie, Yunna Sun, Yongjin Wu, Kai Wang, Guilian Wang, Faheng Zang, Guifu Ding
Summary: A universal wettability switching strategy is developed for achieving programmable directional transport of both droplets and subaqueous bubbles on a dumbbell-patterned functional surface (DPFS). The switchable superwettability of the material regulates the fluid dynamics within the confined pattern, enabling the construction of multiple channels and imparting the fluidic system with strong robustness against path defects. This energy-consumption-free fluid transport system opens a new avenue for on-chip programmable fluid manipulation, promoting innovative applications requiring rational control of two-phase fluid transport.
ADVANCED MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
Zhu Zhuo, Wu Jun-rui, Wu Zhi-peng, Wu Ting-ni, He Yu-chun, Yin Kai
Summary: This review focuses on recent research progress of femtosecond laser micro/nano fabrication for bioinspired superhydrophobic or underwater superoleophobic surfaces, covering aspects such as wettability of organisms, material preparation, and applications. By utilizing principles of biomimicry and femtosecond laser technology, interface materials with special wettability can be prepared, showing great potential for various applications.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Mechanics
Zhicheng Yuan, Mitsuhiro Matsumoto, Ryoichi Kurose
Summary: This study numerically investigated the directional rebound behavior of water droplets on surfaces with wettability gradients. The results show that the rebound behavior of droplets is influenced by a combination of wettability gradient, Weber number, groove width, and groove depth. This research provides important insights for designing wettability gradient surfaces to control droplet transport.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2021)
Article
Chemistry, Physical
Alina Peethan, M. Aravind, V. K. Unnikrishnan, Santhosh Chidangil, Sajan D. George
Summary: A facile and cost-effective method was developed to create superhydrophobic surfaces onto a superhydrophilic commercial paper for the application of droplet splitting. The technique allows for high throughput screening, microfluidic bioassays, and medical diagnosis.
APPLIED SURFACE SCIENCE
(2022)
Article
Microscopy
Jian Zhuang, Xiaobo Liao, Yalou Deng, Lei Cheng, Ali Akmal Zia, Yong Cai, Maolin Zhou
Article
Materials Science, Multidisciplinary
Maolin Zhou, Xuyao He, Xingyu Wu, Lin Xiao, Zehang Cui, Xiaoxuan Tang, Long Guo, Senyun Liu, Hongwei Liu, Yuying Zhu, Yabin Zhang, Guoqiang Li, Jiangong Zhu
APPLIED MATERIALS TODAY
(2020)
Article
Engineering, Environmental
Xuyao He, Guoqiang Li, Yabin Zhang, Xuwei Lai, Maolin Zhou, Lin Xiao, Xiaoxuan Tang, Yanlei Hu, Hongwei Liu, Yi Yang, Yong Cai, Long Guo, Senyun Liu, Weiming Zhao
Summary: This study developed a novel multifunctional integrated glass inspired by the hexagonal microstructure array of mosquito compound eye, which achieved omni-repellency towards water/fog/ice/contaminants through laser texturing. The textured glass showed good durability and transmittance, with added capabilities including self-cleaning for various contaminants, anti-fogging, and icing delay effects.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Lieshuang Zhong, Huan Chen, Lingmei Zhu, Maolin Zhou, Lei Zhang, Shaomin Wang, Xuefeng Han, Yongping Hou, Yongmei Zheng
Summary: A novel Gradient-Janus wire (GJW) based on Liquid Confined Modification (LCM) theory is designed to construct continuous wetting gradient regions. The GJW demonstrates high-speed transportation of water droplets and liquid bridges, with easy fabrication. This technology has potential application in fogwater harvesting.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Lingmei Zhu, Jinghui Li, Leishuang Zhong, Lei Zhang, Maolin Zhou, Huan Chen, Yongping Hou, Yongmei Zheng
Summary: This article introduces an excellent dual-photothermal freshwater collector, which combines graphene oxide and silver nanoparticles to form three-dimensional porous materials in a polyvinyl alcohol gel network. It has the characteristics of high energy conversion efficiency and high evaporation rate, and can effectively generate freshwater.
Article
Chemistry, Physical
Zehang Cui, Lin Xiao, Yaoxia Li, Yabin Zhang, Guoqiang Li, Haoyu Bai, Xiaoxuan Tang, Maolin Zhou, Jiahao Fang, Long Guo, Senyun Liu, Chunhua Xiao, Moyuan Cao
Summary: Inspired by fish medullary spines, a fish-spine-like liquid splitter (FSLLS) has been developed for directional transportation of microdroplets and selective pumping of specific liquids based on anisotropic surface with micropits. The FSLLS demonstrates ultrafast transport speeds for microdroplets with lower surface tension and can effectively separate mixed droplets with different surface tensions.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Xiaoxuan Tang, Hongwei Liu, Lin Xiao, Maolin Zhou, Haoyu Bai, Jiahao Fang, Zehang Cui, Hui Cheng, Guoqiang Li, Yabin Zhang, Moyuan Cao
Summary: Bioinspired wearable fogdrop collector was developed to effectively nourish plants and utilize water resources, showing great potential for portable water harvesting devices.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)