Article
Polymer Science
Yanlong Zhan, Wen Li, Alidad Amirfazli, Sirong Yu
Summary: Smart control of surface wettability, especially for superhydrophobic surfaces, has gained widespread attention. Shape memory superhydrophobic surfaces, based on the shape memory effect of shape memory polymers (SMPs), can intelligently control surface topographies and wettability, and have shown great potential for extensive applications. This review summarizes recent achievements and applications of shape memory superhydrophobic surfaces, introduces the research background, concepts, and significance, reveals the fundamental wetting theory and models, evaluation of shape memory effect, and mechanism. It also reviews recent advances in magnetic, photo, electrical, thermo, and chemical-induced shape memory superhydrophobic surfaces, and summarizes the major representative applications including wettability control, droplet manipulation, self-healing, and other smart applications. Finally, the future research directions and perspectives are discussed.
Article
Materials Science, Multidisciplinary
Zhiqiang Zheng, Ping Huang, Fei Wang
Summary: This study describes a new strategy of achieving reversible switching of wettability on SMA surface with pre-deformed treatment. By utilizing the two-way shape memory effect of SMA, the surface microstructure appears repeatedly under thermal cycling condition, improving the static water contact angle of the surface by about 50 degrees. The research demonstrates the potential of constructing smart surfaces with reversible wettability based on the shape memory effect.
Article
Materials Science, Multidisciplinary
Y. Li, L. Min, J. H. Xin, L. H. Wang, Q. H. Wu, L. F. Fan, F. Gan, H. Yu
Summary: Shape memory polymer fibers (SMPFs) are a significant branch of intelligent fibers. They have been widely used in intelligent textiles, polymer fillers, and medical fields. However, most reported SMPFs only exhibit a one-way shape memory effect, which cannot be reversed by simply reversing the stimulus. In this study, researchers successfully prepared two-way SMPFs using ultra-high molecular weight polyethylene (UHMWPE) as the polymer matrix, which have high tensile strength, reversible strain, and are suitable for industrial mass production.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Yanan Huang, Guiqing Dang, Min Zhu, Longfei Fan, Minzhi Rong, Mingqiu Zhang
Summary: Reversible shape memory polymers with a broad melting temperature range were developed to overcome the limitation of existing polymers. The polymers were able to memorize multiple temporary shapes through a thermal programming process. By selectively activating partial melting and recrystallization at different temperatures, the polymers demonstrated reversible triple, quadruple, and quintuple shape memory effects. This research may have significant implications for the application of reversible shape memory polymers.
APPLIED MATERIALS TODAY
(2023)
Article
Nanoscience & Nanotechnology
Sang Won Lee, Joseph Carnicelli, Dariya Getya, Ivan Gitsov, K. Scott Phillips, Dacheng Ren
Summary: This study demonstrates that biofilms can be effectively removed through repeated on-demand shape recovery using reversible shape memory polymers. The mixture of 2000 and 15000 g/mol PCLDIMA in a 2:1 weight ratio showed the most promising shape transition close to body temperature. The synthesized rSMP showed good reversible shape recovery and up to 94.3 +/- 1.0% removal of 48 h Pseudomonas aeruginosa PAO1 biofilm cells after three consecutive shape recovery cycles. Additionally, the detached biofilm cells were found to be 5.0 +/- 1.2 times more susceptible to 50 mu g/mL tobramycin than the static control.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Multidisciplinary Sciences
Qinglei Ji, Xi Vincent Wang, Lihui Wang, Lei Feng
Summary: This article introduces a post-processing technology for visors using closed loop controlled 4D printing, which allows for customization of visor sizes for a more comfortable user experience. Finite Element Analysis and experimental studies demonstrate the high fabrication precision and shorter time cost of this method. Additionally, a case study is proposed for reducing, reusing, and recycling customized visors in classrooms to achieve a more sustainable manufacturing approach.
SCIENTIFIC REPORTS
(2022)
Article
Polymer Science
Junhao Liu, Wanting Wei, Feng Cao, Zhiyong Zeng, Kun Qian, Hongmei Chen, Fenghua Zhang, Wenbing Li
Summary: Inspired by nature, scientists have developed surfaces with controllable wettability through alterations in surface micro/nanostructures or changes in chemical compositions. This article reports the control of surface wettability using three types of shape-memory micropatterns that can be reversibly transformed between a stretched and an original/recovered state due to the shape-memory properties of poly (ethylene-co-vinyl acetate) (EVA). The study also demonstrates that surface wettability can be controlled by the reversible transformation of surface micropatterns.
EUROPEAN POLYMER JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Xue Bai, Xiaodan Gou, Jialiang Zhang, Jie Liang, Lijing Yang, Shaopeng Wang, Xun Hou, Feng Chen
Summary: Bioinspired smart superwetting surfaces with special wettability have gained significant attention for their wide range of applications, such as self-cleaning, oil-water separation, anti-icing/corrosion/fogging, drag reduction, cell engineering, and liquid manipulation. This review focuses on shape-memory polymer (SMP) surfaces, which offer unique shape transformation properties and can be used to achieve desired superwettability through surface microstructure regulation. The review provides a comprehensive overview of fabrication methods, smart superwetting phenomena, and various application fields. The challenges and future prospects of smart superwetting SMP surfaces are also discussed.
Article
Engineering, Biomedical
Zhihua Li, Zijian Chen, Yanan Gao, Yi Xing, Yuping Zhou, Yucheng Luo, Weihong Xu, Zhengchang Chen, Xu Gao, Kapish Gupta, Karthic Anbalakan, Lei Chen, Chuang Liu, Jian Kong, Hwa Liang Leo, Chengzhi Hu, Hanry Yu, Qiongyu Guo
Summary: A new type of magnetic micro-anchor, SM(2)A, has been developed for magnetic guided endovascular localization. It demonstrates stable anchoring in the desired site and produces the necessary action. This micro-anchor can be a promising platform for precision treatment and diagnosis.
Article
Materials Science, Multidisciplinary
X. Wang, M. Behl, A. Lendlein, M. Balk
Summary: The adaptive-like movement of reprogrammable hydrogel actuators is demonstrated by integrating temperature-triggered actuation and medium-and pH-based modulated swelling into one multiphase network. The reversible crystallization of poly(e-caprolactone) (PCL) provides bending movements up to 71 degrees, and changing the solvent from water to ethanol increases swellability. Modulated swelling between different pH values is achieved by modifying the actuators with acrylic acid moieties, resulting in reversible bending movements. The coupled functionalities of actuation and modulated swelling create conditioned actuation behavior between stimuli-sensitivity and adaptivity.
MATERIALS & DESIGN
(2023)
Article
Engineering, Electrical & Electronic
Saeed Akbari, Amir Hosein Sakhaei, Sahil Panjwani, Kavin Kowsari, Qi Ge
Summary: This study utilizes multimaterial 3D printing to fabricate soft composite actuators with variable stiffness, capable of shape retention and recovery. By adjusting the thickness of the SMP layer, the effect on shape retention and recovery can be studied. Additionally, SMA wires are embedded to provide bending force, while resistive wires change the temperature and bending stiffness of the hinges through Joule heating.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Nanoscience & Nanotechnology
Xin Luo, Hua Lai, Zhongjun Cheng, Pengchang Liu, Yufen Li, Yuyan Liu
Summary: This study introduces a novel slippery surface by integrating temperature-responsive lubricant and shape memory surface microstructure. The combination of lubricant phase transition and adjustable surface microstructure allows for control over droplet movement between sliding and pinning states, as well as programmable sliding directions. This advancement offers insights into smart slippery surface design and presents a promising material for smart control of droplet motion.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yingbin Song, Hua Lai, Xiaoyu Jiao, Zhongjun Cheng, Hongjun Kang, Dongjie Zhang, Zhimin Fan, Zhimin Xie, Youshan Wang, Yuyan Liu
Summary: This paper introduces a smart amphibious shape memory polymer (SMP) surface that exhibits superhydrophobicity in air and superoleophobicity under-water. The wetting performance in both air and water can be reversibly changed by adjusting the surface micro/nanostructures. The surface allows for the creation of diverse microstructure patterns and programmable droplet storages, making it suitable for applications such as microdroplet manipulation, bio-detection, and micro-reactions.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Zhao Xu, Dun-Wen Wei, Rui-Ying Bao, Yu Wang, Kai Ke, Ming-Bo Yang, Wei Yang
Summary: In this study, a variable stiffness polyolefin elastomer material was successfully prepared and used in the fabrication of multifunctional soft robots. By introducing phase change material paraffin wax and carbon nanotubes, the material exhibits reversible shape memory effect and self-sensing ability, providing signal transductions for strain and temperature perception in soft robots.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Nan Li, Wen-Jin Sun, Yue-Yi Wang, Ding-Xiang Yan, Zhong-Ming Li
Summary: A biomimetic actuator with large reversible deformation (about 20%) is designed and fabricated by combining pre-stretched and photo-crosslinked EVA with polyimide (PI) and screen-printed Ag conductive network. The use of chemical crosslinking points and the conductive network enables the actuator to exhibit large deformation and low voltage actuation capacity. The composite also has the ability to actuate at temperatures above the melting point, reducing the constraints of actuating conditions.
Review
Hematology
Mengying Gao, Jinbo Huang, Yingqi Shao, Meili Ge, Xingxin Li, Jing Zhang, Min Wang, Neng Nie, Peng Jin, Yizhou Zheng
Summary: This study retrospectively analyzed the management and outcomes of anti-thymocyte globulin (ATG) administration for platelet transfusion refractoriness (PTR) in severe aplastic anemia (SAA) patients. The results showed that ATG was effective in rapidly relieving PTR symptoms, with nearly half of the patients responding immediately after the first dose of ATG. Some patients experienced severe bleeding after ATG treatment, but effective platelet transfusion could quickly alleviate the bleeding events, while non-responders may suffer from aggravated bleeding.
TRANSFUSION AND APHERESIS SCIENCE
(2022)
Article
Nutrition & Dietetics
Jianping Xiong, Haitao Hu, Wenzhe Kang, Xinxin Shao, Yang Li, Peng Jin, Yantao Tian
Summary: This study investigates the connection between sarcopenia and interleukin-16 (IL-16) expression and their relation to gastric cancer (GC) survival. The results show that sarcopenia and high IL-16 expression are independent factors predicting overall survival and relapse-free survival in GC patients. Furthermore, there is a higher occurrence of high IL-16 expression in GC patients with sarcopenia. Sarcopenia accompanied by high IL-16 expression suggests a poorer prognosis in GC patients.
Article
Multidisciplinary Sciences
Liujun Xu, Jinrong Liu, Peng Jin, Guoqiang Xu, Jiaxin Li, Xiaoping Ouyang, Ying Li, Cheng-Wei Qiu, Jiping Huang
Summary: The curved space-time produced by black holes leads to the intriguing trapping effect. So far, metadevices have enabled analogous black holes to trap light or sound in laboratory spacetime. However, trapping heat in a conductive environment is still challenging because diffusive behaviors are directionless.
NATIONAL SCIENCE REVIEW
(2023)
Article
Thermodynamics
Wei Wu, Peng Jin, Shuai Zhao, Yunjun Luo
Summary: This paper investigates the effect of ammonium perchlorate (AP) on the slow cook-off response of hydroxyl-terminated block copolyether (HTPE) propellants. The results show that an increase in AP content or a decrease in AP diameter leads to a more violent slow cook-off response. The possible mechanism for this is the thermal damage of the propellant during the slow cook-off test, which increases the combustion sensitivity of the damaged propellant.
THERMOCHIMICA ACTA
(2022)
Article
Thermodynamics
Binzhen Zhou, Jianjian Hu, Peng Jin, Ke Sun, Ye Li, Dezhi Ning
Summary: By studying a hybrid system consisting of a semi-submersible platform and heaving point absorber wave energy converters (WECs), this research has found that a new prominent power peak occurs in the so-called synchronized mode regardless of the layout of the WECs. In this mode, the power of a single WEC can increase by up to 41.4% and the total power by up to 26.7%, but the heave motion of the platform increases. The WECs have a small impact on the surge motion and pitch motion of the platform except for near the synchronized mode frequency, where they reduce the resonant heave motion at the natural frequency. This study provides valuable insights into the dynamic and power performance of wind-wave hybrid systems, offering detailed configurations and potential guidance for practical design and application.
Article
Multidisciplinary Sciences
Peng Jin, Jinrong Liu, Liujun Xu, Jun Wang, Xiaoping Ouyang, Jian-Hua Jiang, Jiping Huang
Summary: Thermal metamaterials provide rich control of heat transport by breaking the Onsager reciprocity and introducing thermal convection, leading to a regime beyond effective heat conduction. A continuous switch from thermal cloaking to thermal concentration is demonstrated in a liquid-solid hybrid thermal metamaterial with external tuning. This switch is achieved by tuning the liquid flow, resulting in a topology transition in the virtual space of the thermotic transformation. These findings illustrate the extraordinary heat transport in complex multicomponent thermal metamaterials and pave the way toward an unprecedented regime of heat manipulation.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Engineering, Chemical
Daoguang Teng, Peng Jin, Shiqiao Yang, Wenhuan Guo, Zhuang Zhao, Guoli Zhou, Peng Li, Yijun Cao
Summary: Cost-effective polycyclic aromatic hydrocarbons (PAHs) were used to fabricate hyper-cross-linked polymers (HCLPs) via an external cross-linker knitting method (ECLKM) followed by N-source impregnation modification. The resulting materials exhibited high thermal stability, large specific surface areas, narrow pore distributions, and high pore volumes. The effects of porosities and N-doping modification on the CO2 capture capacities of HCLPs were fully studied, and it was found that porosities played a dominant role in the CO2 uptake process compared to N-doping modification. This study provides a simple strategy for constructing HCLPs with excellent CO2 capture performances using PAHs.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Mechanics
Bin-zhen Zhou, Zhi Zheng, Yu Wang, Peng Jin, Lin Cui, Liang Cheng
Summary: An optimization method is proposed to determine the dimensions of a hybrid system consisting of a spar-type floating offshore wind turbine and a heaving annular wave energy converter (WEC). The synchronized mode, where the natural frequency of the system matches the peak wave frequency, is found to be the most effective in terms of wave energy production.
JOURNAL OF HYDRODYNAMICS
(2023)
Article
Physics, Applied
Fubao Yang, Peng Jin, Min Lei, Gaole Dai, Jun Wang, Jiping Huang
Summary: The proposed space-time-coding electromagnetic metasurface introduces the temporal dimension into artificial structure design, expanding its digital application in information processing. However, the absence of temporal dimension in thermal digital metamaterial limits the synergetic modulation of thermal signal in time and space. This study introduces temporal modulation into existing spatially variable thermal coding structures and proposes a space-time thermal binary coding scheme, demonstrating a practical strategy for thermal binary coding and providing a prototype for spatiotemporal regulation of thermal signal.
PHYSICAL REVIEW APPLIED
(2023)
Article
Chemistry, Multidisciplinary
Kai Wang, Feng Wan, Ling Luo, Pengyu Cao, Lei Han, Peng Jin
Summary: This paper investigates the buckling enhancement of the negative Poisson's ratio (NPR) effect on a laminated plate under uniaxial compression with an in-plane translational restraint. By studying the buckling equation and lamination parameters, it is found that the critical buckling load of an NPR-laminated composite can be increased due to the induced tension force on the unloaded direction under compression. The Poisson's ratio contours and buckling load enhancement are analyzed, and the inverse problem of deciding the laminate configuration is solved using the particle swarm optimization (PSO) algorithm.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Peng Jin, Liujun Xu, Guoqiang Xu, Jiaxin Li, Cheng-Wei Qiu, Jiping Huang
Summary: Heat-enhanced thermal diffusion metamaterials powered by deep learning enable automatic temperature sensing and adjustment with high tunability and stable thermal performance.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Tian Xia, Zhuangzhuang Wu, Ying Liang, Wenxin Wang, Yongpeng Li, Xinlong Tian, Lijuan Feng, Zhuyin Sui, Qi Chen
Summary: In this study, a sulfonic group-containing COF was prepared as a modified separator in lithium-sulfur batteries. The COF-SO3 cell showed higher ionic conductivity and excellent electrochemical performance, inhibiting the shuttle effect of polysulfides and promoting Li+ diffusion. Furthermore, COF-SO3 was used as an electrocatalyst for the oxygen evolution reaction, exhibiting low overpotential and exceptional stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Marine
Binzhen Zhou, Qi Zhang, Jianjian Hu, Peng Jin, Hengming Zhang, Siming Zheng
Summary: The wave power absorption of a heaving-body wave energy converter can be improved by deploying it near a coastal wall, harbour pier, or breakwater and making it highly asymmetric. This research proposes a semi-analytical model to analyze the coupling between the geometric asymmetry of the converter and the partial reflecting boundaries of the walls. Results show that the wall increases the power performance by increasing the reflection rate.
Article
Chemistry, Inorganic & Nuclear
Wangqiang Shen, Lei Lou, Yiao Wei, Lipiao Bao, Guangqing Xu, Peng Jin, Jun Lv, Xing Lu
Summary: In this study, a dysprosium-containing mono-EMF with a C-84 cage, possessing rare D-2(21) symmetry, was successfully synthesized. Theoretical calculations revealed that the encapsulation of a trivalent Dy ion in the carbon cage is energetically more favorable than other C-84-based mono-EMFs. This work not only expands the trivalent mono-EMF family but also provides insights into the unique structures and stabilities of such novel EMFs.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Engineering, Manufacturing
Myers Harbinson, Michael Pudlo, Sipan Liu, Taimur Chaudhry, Yuxuan Liu, Chenxi Sui, Yong Zhu, Po-Chun Hsu, Jong E. Ryu
Summary: Solar panels contribute to a significant amount of energy production in the United States, but their efficiency decreases at higher temperatures. Therefore, the development of an economical cooling technology is necessary. This study demonstrates a low-cost coating method that effectively reduces the temperature of solar panels while maintaining photovoltaic efficiency and possessing hydrophobic and contamination-resistant properties.
MANUFACTURING LETTERS
(2023)
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.
