Pub Date : 2023-11-01DOI: 10.1016/j.xcrp.2023.101678
Xinyuan Zhou, Manqing Qi, Kun Li, Zhenjie Xue, Tie Wang
Exhaled breath detection is a noninvasive method to diagnose diseases and is promising in the early screening of lung cancer. However, gas biomarkers of lung cancer within the exhaled breath are various and low content, and the exhaled breath has complex composition and strong fluidity, which puts forward high requirements for the performance of gas sensors. Hence, Wang’s team proposes a strategy for gas sensors based on nanoparticle-assembled interfaces. From the perspective of gas-sensing dynamics of exhaled breath, the microstructure of the sensing interface is designed to enhance their capture and adsorption efficiency via regulating the mass transfer behaviors of gas molecules so as to design high-performance sensors. In addition, from the three levels of cell, organ, and living body, this review summarizes the research strategy and progress of gas biomarkers of lung cancer and comments on the clinical application value of gas biomarkers in the breath detection of lung cancer. Then, this review introduces gas sensors with market application prospects, which promotes the breath detection of lung cancer from theoretical research to clinical application. Finally, breath sensors for lung cancer and prospected in smart homes are summarized.
{"title":"Gas sensors based on nanoparticle-assembled interfaces and their application in breath detection of lung cancer","authors":"Xinyuan Zhou, Manqing Qi, Kun Li, Zhenjie Xue, Tie Wang","doi":"10.1016/j.xcrp.2023.101678","DOIUrl":"https://doi.org/10.1016/j.xcrp.2023.101678","url":null,"abstract":"Exhaled breath detection is a noninvasive method to diagnose diseases and is promising in the early screening of lung cancer. However, gas biomarkers of lung cancer within the exhaled breath are various and low content, and the exhaled breath has complex composition and strong fluidity, which puts forward high requirements for the performance of gas sensors. Hence, Wang’s team proposes a strategy for gas sensors based on nanoparticle-assembled interfaces. From the perspective of gas-sensing dynamics of exhaled breath, the microstructure of the sensing interface is designed to enhance their capture and adsorption efficiency via regulating the mass transfer behaviors of gas molecules so as to design high-performance sensors. In addition, from the three levels of cell, organ, and living body, this review summarizes the research strategy and progress of gas biomarkers of lung cancer and comments on the clinical application value of gas biomarkers in the breath detection of lung cancer. Then, this review introduces gas sensors with market application prospects, which promotes the breath detection of lung cancer from theoretical research to clinical application. Finally, breath sensors for lung cancer and prospected in smart homes are summarized.","PeriodicalId":9703,"journal":{"name":"Cell Reports Physical Science","volume":"7 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135565203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Extracorporeal membrane oxygenation (ECMO) is a life support system that provides extracorporeal respiration and circulation. Current oxygenation membranes still face the challenges of plasma leakage, low gas exchange efficiency of O2 and CO2, and poor biocompatibility. Here, we describe the design and realization of a biomimetic Janus membrane to simulate the structural characteristics of the alveolar blood-gas barrier. The asymmetric structure is constructed by sequential assembly of a hydrophobic polydimethylsiloxane layer, hydrophilic amino acid layer, and sulfonate grafting layer, which provide the functions of preventing plasma leakage, improving gas exchange performance, and maintaining biocompatibility. Importantly, the membrane can offer efficient blood oxygenation, achieving O2 and CO2 transfer rates of ∼54 and ∼131 mL m−2 min−1, respectively. This work demonstrates that the smartly designed Janus structure provides the desired comprehensive properties of an oxygenation membrane and offers valuable guidance for the development of more advanced oxygenation membranes.
体外膜氧合(Extracorporeal membrane oxygenation, ECMO)是一种提供体外呼吸和循环的生命支持系统。目前的氧合膜仍面临等离子体泄漏、O2和CO2气体交换效率低、生物相容性差等挑战。在这里，我们描述了仿生Janus膜的设计和实现，以模拟肺泡血气屏障的结构特征。通过疏水聚二甲基硅氧烷层、亲水性氨基酸层和磺酸盐接枝层序组装而成的不对称结构，具有防止等离子体泄漏、提高气体交换性能和维持生物相容性等功能。重要的是，该膜可以提供有效的血液氧合，O2和CO2的传递速率分别为~ 54和~ 131 mL m−2 min−1。这项工作表明，巧妙设计的Janus结构提供了所需的氧化膜的综合性能，并为开发更先进的氧化膜提供了有价值的指导。
{"title":"Advanced amino acid-based biomimetic Janus membrane for extracorporeal membrane oxygenation","authors":"Yue Yang, Wenqing Gao, Yun Chang, Zhenyi Zhao, Hechen Shen, Zhi Wang, Tong Li, Song Zhao","doi":"10.1016/j.xcrp.2023.101677","DOIUrl":"https://doi.org/10.1016/j.xcrp.2023.101677","url":null,"abstract":"Extracorporeal membrane oxygenation (ECMO) is a life support system that provides extracorporeal respiration and circulation. Current oxygenation membranes still face the challenges of plasma leakage, low gas exchange efficiency of O2 and CO2, and poor biocompatibility. Here, we describe the design and realization of a biomimetic Janus membrane to simulate the structural characteristics of the alveolar blood-gas barrier. The asymmetric structure is constructed by sequential assembly of a hydrophobic polydimethylsiloxane layer, hydrophilic amino acid layer, and sulfonate grafting layer, which provide the functions of preventing plasma leakage, improving gas exchange performance, and maintaining biocompatibility. Importantly, the membrane can offer efficient blood oxygenation, achieving O2 and CO2 transfer rates of ∼54 and ∼131 mL m−2 min−1, respectively. This work demonstrates that the smartly designed Janus structure provides the desired comprehensive properties of an oxygenation membrane and offers valuable guidance for the development of more advanced oxygenation membranes.","PeriodicalId":9703,"journal":{"name":"Cell Reports Physical Science","volume":"10 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135456193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-01DOI: 10.1016/j.xcrp.2023.101673
Zeyu Zhao, Zhiyuan Tian, Feng Yan
Flexible organic bioelectronic devices, which extract electronic signals from living systems, have been developed for sensing, recording, and monitoring various physiological states of biological systems. Organic electrochemical transistors (OECTs) have emerged as a promising platform for bioelectronics because of their inherent amplification function, high sensitivity, low cost, easy operation, and compatibility with flexible and wearable devices. This review provides a comprehensive overview of recent advancements in flexible OECTs for biosensing applications, including the fundamental principles and mechanisms of flexible OECTs, various channel materials used for biosensing, functionalization of OECTs for biosensing, use of flexible OECTs for the acquisition of biological signals, bioinformatics analysis of OECT-based biosensors, and development of biomimetic devices. The review concludes with a summary of the state-of-the-art technology for flexible OECT-based biosensors and the future outlook for this rapidly evolving field.
{"title":"Flexible organic electrochemical transistors for bioelectronics","authors":"Zeyu Zhao, Zhiyuan Tian, Feng Yan","doi":"10.1016/j.xcrp.2023.101673","DOIUrl":"https://doi.org/10.1016/j.xcrp.2023.101673","url":null,"abstract":"Flexible organic bioelectronic devices, which extract electronic signals from living systems, have been developed for sensing, recording, and monitoring various physiological states of biological systems. Organic electrochemical transistors (OECTs) have emerged as a promising platform for bioelectronics because of their inherent amplification function, high sensitivity, low cost, easy operation, and compatibility with flexible and wearable devices. This review provides a comprehensive overview of recent advancements in flexible OECTs for biosensing applications, including the fundamental principles and mechanisms of flexible OECTs, various channel materials used for biosensing, functionalization of OECTs for biosensing, use of flexible OECTs for the acquisition of biological signals, bioinformatics analysis of OECT-based biosensors, and development of biomimetic devices. The review concludes with a summary of the state-of-the-art technology for flexible OECT-based biosensors and the future outlook for this rapidly evolving field.","PeriodicalId":9703,"journal":{"name":"Cell Reports Physical Science","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135460569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-01DOI: 10.1016/j.xcrp.2023.101680
Emmanuel Batsa Tetteh, Moonjoo Kim, Alan Savan, Alfred Ludwig, Taek Dong Chung, Wolfgang Schuhmann
While promising catalysts are constantly being discovered for the electrochemical hydrogen evolution reaction (HER), none have surpassed platinum’s performance, despite its intrinsic activity being underestimated. A thorough assessment of intrinsic activity is therefore necessary to understand platinum’s superior performance. Here, we use scanning electrochemical cell microscopy to overcome limitations in proton and hydrogen mass transport at multiple scales. Reliable HER current transients with steady-state limiting current densities far above the exchange current density are recorded (jl of 4 A/cm2 with a 440 nm pipette) in acid electrolyte. Furthermore, exchange current density analysis shows that platinum’s intrinsic activity (230 ± 34 mA/cm2) is over 200-fold higher than reported in rotating disc measurements (1 mA/cm2), 3-fold higher than the H2 pump method (75 mA/cm2), and almost twice that from micropolarization analysis (140 mA/cm2). These findings demonstrate the importance of mass transport in achieving high-current-density electrocatalysis and reveal platinum’s underestimated intrinsic activity.
{"title":"Reassessing the intrinsic hydrogen evolution reaction activity of platinum using scanning electrochemical cell microscopy","authors":"Emmanuel Batsa Tetteh, Moonjoo Kim, Alan Savan, Alfred Ludwig, Taek Dong Chung, Wolfgang Schuhmann","doi":"10.1016/j.xcrp.2023.101680","DOIUrl":"https://doi.org/10.1016/j.xcrp.2023.101680","url":null,"abstract":"While promising catalysts are constantly being discovered for the electrochemical hydrogen evolution reaction (HER), none have surpassed platinum’s performance, despite its intrinsic activity being underestimated. A thorough assessment of intrinsic activity is therefore necessary to understand platinum’s superior performance. Here, we use scanning electrochemical cell microscopy to overcome limitations in proton and hydrogen mass transport at multiple scales. Reliable HER current transients with steady-state limiting current densities far above the exchange current density are recorded (jl of 4 A/cm2 with a 440 nm pipette) in acid electrolyte. Furthermore, exchange current density analysis shows that platinum’s intrinsic activity (230 ± 34 mA/cm2) is over 200-fold higher than reported in rotating disc measurements (1 mA/cm2), 3-fold higher than the H2 pump method (75 mA/cm2), and almost twice that from micropolarization analysis (140 mA/cm2). These findings demonstrate the importance of mass transport in achieving high-current-density electrocatalysis and reveal platinum’s underestimated intrinsic activity.","PeriodicalId":9703,"journal":{"name":"Cell Reports Physical Science","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135715564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-18DOI: 10.1016/j.xcrp.2023.101635
Stanley N Oyaghire, Elias Quijano, J Dinithi R Perera, Hanna K Mandl, W Mark Saltzman, Raman Bahal, Peter M Glazer
Peptide nucleic acids (PNAs) can target and stimulate recombination reactions in genomic DNA. We have reported that γPNA oligomers possessing the diethylene glycol γ-substituent show improved efficacy over unmodified PNAs in stimulating recombination-induced gene modification. However, this structural modification poses a challenge because of the inherent racemization risk in O-alkylation of the precursory serine side chain. To circumvent this risk and improve γPNA accessibility, we explore the utility of γPNA oligomers possessing the hydroxymethyl-γ moiety for gene-editing applications. We demonstrate that a γPNA oligomer possessing the hydroxymethyl modification, despite weaker preorganization, retains the ability to form a hybrid with the double-stranded DNA target of comparable stability and with higher affinity than that of the diethylene glycol-γPNA. When formulated into poly(lactic-co-glycolic acid) nanoparticles, the hydroxymethyl-γPNA stimulates higher frequencies (≥ 1.5-fold) of gene modification than the diethylene glycol γPNA in mouse bone marrow cells.
{"title":"DNA recognition and induced genome modification by a hydroxymethyl-γ tail-clamp peptide nucleic acid.","authors":"Stanley N Oyaghire, Elias Quijano, J Dinithi R Perera, Hanna K Mandl, W Mark Saltzman, Raman Bahal, Peter M Glazer","doi":"10.1016/j.xcrp.2023.101635","DOIUrl":"10.1016/j.xcrp.2023.101635","url":null,"abstract":"<p><p>Peptide nucleic acids (PNAs) can target and stimulate recombination reactions in genomic DNA. We have reported that γPNA oligomers possessing the diethylene glycol γ-substituent show improved efficacy over unmodified PNAs in stimulating recombination-induced gene modification. However, this structural modification poses a challenge because of the inherent racemization risk in <i>O</i>-alkylation of the precursory serine side chain. To circumvent this risk and improve γPNA accessibility, we explore the utility of γPNA oligomers possessing the hydroxymethyl-γ moiety for gene-editing applications. We demonstrate that a γPNA oligomer possessing the hydroxymethyl modification, despite weaker preorganization, retains the ability to form a hybrid with the double-stranded DNA target of comparable stability and with higher affinity than that of the diethylene glycol-γPNA. When formulated into poly(lactic-co-glycolic acid) nanoparticles, the hydroxymethyl-γPNA stimulates higher frequencies (≥ 1.5-fold) of gene modification than the diethylene glycol γPNA in mouse bone marrow cells.</p>","PeriodicalId":9703,"journal":{"name":"Cell Reports Physical Science","volume":"4 10","pages":""},"PeriodicalIF":7.9,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10621889/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71421048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Creating flexible actuators that mimic natural organisms' movements and respond to various stimuli is highly significant for bionic soft robotics, electronics, and wearables. However, achieving a simultaneous response to multiple stimuli within a single actuator still has great challenges in terms of structural design. Here, by combining carbon nanotubes with high photothermal effect, bacterial cellulose with water-triggered expansion, and polyethylene with a large thermal expansion coefficient, a bilayer actuator is proposed with macroscopic and fast response to natural sunlight, low voltage, temperature, humidity, and organic solvents. Based on this, we propose a smart curtain that passively responds to light changes, lowering room temperature by 10.9°C to reduce the huge energy consumption for thermal management of buildings. Besides, a multi-stimulus response curtain that switches according to ambient humidity is designed. Interestingly, this soft actuator can also realize complex bionic motions such as bionic clamping, jumping, self-oscillation, and crawling.
{"title":"A multi-stimuli-responsive actuator for efficient thermal management and various biomimetic locomotion","authors":"Xue-Fei Feng, Si-Zhe Sheng, Cheng Chen, Xin-Lin Li, Zhi-Yu Xian, Jian-Wei Liu","doi":"10.1016/j.xcrp.2023.101588","DOIUrl":"https://doi.org/10.1016/j.xcrp.2023.101588","url":null,"abstract":"Creating flexible actuators that mimic natural organisms' movements and respond to various stimuli is highly significant for bionic soft robotics, electronics, and wearables. However, achieving a simultaneous response to multiple stimuli within a single actuator still has great challenges in terms of structural design. Here, by combining carbon nanotubes with high photothermal effect, bacterial cellulose with water-triggered expansion, and polyethylene with a large thermal expansion coefficient, a bilayer actuator is proposed with macroscopic and fast response to natural sunlight, low voltage, temperature, humidity, and organic solvents. Based on this, we propose a smart curtain that passively responds to light changes, lowering room temperature by 10.9°C to reduce the huge energy consumption for thermal management of buildings. Besides, a multi-stimulus response curtain that switches according to ambient humidity is designed. Interestingly, this soft actuator can also realize complex bionic motions such as bionic clamping, jumping, self-oscillation, and crawling.","PeriodicalId":9703,"journal":{"name":"Cell Reports Physical Science","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135274888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-01DOI: 10.1016/j.xcrp.2023.101586
Dominik Dold, Derek Aranguren van Egmond
Architected materials possessing physico-chemical properties adaptable to disparate environmental conditions embody a disruptive new domain of materials science. Fueled by advances in digital design and fabrication, materials shaped into lattice topologies enable a degree of property customization not afforded to bulk materials. A promising venue for inspiration toward their design is in the irregular micro-architectures of nature. However, the immense design variability unlocked by such irregularity is challenging to probe analytically. Here, we propose a new computational approach using graph-based representation for regular and irregular lattice materials. Our method uses differentiable message passing algorithms to calculate mechanical properties, allowing automatic differentiation with surrogate derivatives to adjust geometric structure and local attributes of individual lattice elements to achieve inversely designed materials with desired properties. We further introduce a graph neural network surrogate model for structural analysis at scale. The methodology is generalizable to any system representable as heterogeneous graphs.
{"title":"Differentiable graph-structured models for inverse design of lattice materials","authors":"Dominik Dold, Derek Aranguren van Egmond","doi":"10.1016/j.xcrp.2023.101586","DOIUrl":"https://doi.org/10.1016/j.xcrp.2023.101586","url":null,"abstract":"Architected materials possessing physico-chemical properties adaptable to disparate environmental conditions embody a disruptive new domain of materials science. Fueled by advances in digital design and fabrication, materials shaped into lattice topologies enable a degree of property customization not afforded to bulk materials. A promising venue for inspiration toward their design is in the irregular micro-architectures of nature. However, the immense design variability unlocked by such irregularity is challenging to probe analytically. Here, we propose a new computational approach using graph-based representation for regular and irregular lattice materials. Our method uses differentiable message passing algorithms to calculate mechanical properties, allowing automatic differentiation with surrogate derivatives to adjust geometric structure and local attributes of individual lattice elements to achieve inversely designed materials with desired properties. We further introduce a graph neural network surrogate model for structural analysis at scale. The methodology is generalizable to any system representable as heterogeneous graphs.","PeriodicalId":9703,"journal":{"name":"Cell Reports Physical Science","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135275463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-01DOI: 10.1016/j.xcrp.2023.101598
Xiaoxia Wu, Jie Xing, Yonglei Lyu, Jingjing Yu, Jinghui Yang, Dawei Qi, Xin Wang, Jie Lin, Guoliang Shao, Aiguo Wu, Jianwei Li
Multicomponent self-assembly offers a strategy to explore ordered, complex, and dynamic nanosystems and to harness the property of the whole system beyond that of each subcomponent. However, the spontaneous nature of co-self-assembly makes control of the process difficult. Here, we use a thiol-disulfide exchange reaction as an in situ dynamic covalent reaction to slowly produce disulfide macrocycles that subsequently trigger the co-self-assembly with an anticancer drug and a photosensitizer. The gradual concentration growth of products shows kinetic control over the concentration of self-assembling disulfides, resulting in a stable co-delivery nanosystem with high drug-loading efficiency (31.78%) and encapsulation efficiency (95.91%). The nanosystem possesses biocompatibility, tumor-accumulating ability, and biosafety and shows a synergistic chemotherapeutic and photodynamic anticancer effect in vitro and in vivo. Our findings suggest that in situ dynamic covalent chemistry advances control over co-self-assembly, paving the way to more functional nanosystems with potential applications in biomedicine, electronics, and renewable energy.
{"title":"Kinetic control over co-self-assembly using an in situ dynamic covalent reaction resulting in a synergistic chemo-photodynamic therapy","authors":"Xiaoxia Wu, Jie Xing, Yonglei Lyu, Jingjing Yu, Jinghui Yang, Dawei Qi, Xin Wang, Jie Lin, Guoliang Shao, Aiguo Wu, Jianwei Li","doi":"10.1016/j.xcrp.2023.101598","DOIUrl":"https://doi.org/10.1016/j.xcrp.2023.101598","url":null,"abstract":"Multicomponent self-assembly offers a strategy to explore ordered, complex, and dynamic nanosystems and to harness the property of the whole system beyond that of each subcomponent. However, the spontaneous nature of co-self-assembly makes control of the process difficult. Here, we use a thiol-disulfide exchange reaction as an in situ dynamic covalent reaction to slowly produce disulfide macrocycles that subsequently trigger the co-self-assembly with an anticancer drug and a photosensitizer. The gradual concentration growth of products shows kinetic control over the concentration of self-assembling disulfides, resulting in a stable co-delivery nanosystem with high drug-loading efficiency (31.78%) and encapsulation efficiency (95.91%). The nanosystem possesses biocompatibility, tumor-accumulating ability, and biosafety and shows a synergistic chemotherapeutic and photodynamic anticancer effect in vitro and in vivo. Our findings suggest that in situ dynamic covalent chemistry advances control over co-self-assembly, paving the way to more functional nanosystems with potential applications in biomedicine, electronics, and renewable energy.","PeriodicalId":9703,"journal":{"name":"Cell Reports Physical Science","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135323695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Liquid-like PDMS brushes coating with low adhesion to droplets are significant in both fundamental research and practical application. Covalent grafting is a common strategy to prepare PDMS brushes with low adhesion to diverse liquids in a wide range of surface tensions, but it is only suitable for high active inorganic substrates. Casting of mixtures containing PDMS can solve this problem; however, homogeneity and low adhesion cannot be guaranteed. Here we report a simple method by step-by-step spraying for preparing PDMS brushes, which is suitable for both substrates. Droplets with a wide range of surface tension can slide off the coating with a sliding angle less than 10°. Research results indicate that the polyamine with flexible molecular chain and high functionality is beneficial for brushes coating with high grafting density and excellent surface lubricity. Finally, good stability and diverse applications in fouling resistance, self-cleaning, anti-bursting, etc. are also demonstrated.
{"title":"A simple and universal strategy for liquid-like coating suitable for a broad range of liquids on diverse substrates","authors":"Shouzheng Jiao, Yufen Li, Yang Zhang, Dongjie Zhang, Yuyan Liu, Zhongjun Cheng","doi":"10.1016/j.xcrp.2023.101593","DOIUrl":"https://doi.org/10.1016/j.xcrp.2023.101593","url":null,"abstract":"Liquid-like PDMS brushes coating with low adhesion to droplets are significant in both fundamental research and practical application. Covalent grafting is a common strategy to prepare PDMS brushes with low adhesion to diverse liquids in a wide range of surface tensions, but it is only suitable for high active inorganic substrates. Casting of mixtures containing PDMS can solve this problem; however, homogeneity and low adhesion cannot be guaranteed. Here we report a simple method by step-by-step spraying for preparing PDMS brushes, which is suitable for both substrates. Droplets with a wide range of surface tension can slide off the coating with a sliding angle less than 10°. Research results indicate that the polyamine with flexible molecular chain and high functionality is beneficial for brushes coating with high grafting density and excellent surface lubricity. Finally, good stability and diverse applications in fouling resistance, self-cleaning, anti-bursting, etc. are also demonstrated.","PeriodicalId":9703,"journal":{"name":"Cell Reports Physical Science","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135324544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-01DOI: 10.1016/j.xcrp.2023.101617
Ali Zein Khater, M.A.S.R. Saadi, Sohini Bhattacharyya, Alex Kutana, Manoj Tripathi, Mithil Kamble, Shaowei Song, Minghe Lou, Morgan Barnes, Matthew D. Meyer, Vijay Vedhan Jayanthi Harikrishnan, Alan B. Dalton, Nikhil Koratkar, Chandra Sekhar Tiwary, Peter J. Boul, Boris Yakobson, Hanyu Zhu, Pulickel M. Ajayan, Muhammad M. Rahman
Carbon nanotube (CNT)-reinforced polymer nanocomposites are promising candidates for a myriad of applications. Ad hoc CNT-polymer nanocomposite fabrication techniques inherently pose roadblocks to optimized processing, resulting in microstructural defects, i.e., void formation, poor interfacial adhesion, wettability, and agglomeration of CNTs inside the polymer matrix. Here, we show that a 3D printing technique offers improved processing of CNT-polymer nanocomposites. During printing, the shear-induced flow of an engineered nanocomposite ink through the micronozzle is beneficial, as it reduces the number of voids within the epoxy matrix, improves CNT dispersion and adhesion with epoxy, and partially aligns the CNTs. Such microstructural changes result in enhanced mechanical and thermal properties of the nanocomposites compared to their mold-cast counterparts. This work demonstrates the advantages of 3D printing in achieving improved processing dynamics for the fabrication of CNT-polymer nanocomposites with better structural and functional properties.
{"title":"Processing dynamics of carbon nanotube-epoxy nanocomposites during 3D printing","authors":"Ali Zein Khater, M.A.S.R. Saadi, Sohini Bhattacharyya, Alex Kutana, Manoj Tripathi, Mithil Kamble, Shaowei Song, Minghe Lou, Morgan Barnes, Matthew D. Meyer, Vijay Vedhan Jayanthi Harikrishnan, Alan B. Dalton, Nikhil Koratkar, Chandra Sekhar Tiwary, Peter J. Boul, Boris Yakobson, Hanyu Zhu, Pulickel M. Ajayan, Muhammad M. Rahman","doi":"10.1016/j.xcrp.2023.101617","DOIUrl":"https://doi.org/10.1016/j.xcrp.2023.101617","url":null,"abstract":"Carbon nanotube (CNT)-reinforced polymer nanocomposites are promising candidates for a myriad of applications. Ad hoc CNT-polymer nanocomposite fabrication techniques inherently pose roadblocks to optimized processing, resulting in microstructural defects, i.e., void formation, poor interfacial adhesion, wettability, and agglomeration of CNTs inside the polymer matrix. Here, we show that a 3D printing technique offers improved processing of CNT-polymer nanocomposites. During printing, the shear-induced flow of an engineered nanocomposite ink through the micronozzle is beneficial, as it reduces the number of voids within the epoxy matrix, improves CNT dispersion and adhesion with epoxy, and partially aligns the CNTs. Such microstructural changes result in enhanced mechanical and thermal properties of the nanocomposites compared to their mold-cast counterparts. This work demonstrates the advantages of 3D printing in achieving improved processing dynamics for the fabrication of CNT-polymer nanocomposites with better structural and functional properties.","PeriodicalId":9703,"journal":{"name":"Cell Reports Physical Science","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135458921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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