Kelly Turner, Gerard Colston, Katarzyna Stokeley, Andrew Newton, Arne Renz, Marina Antoniou, Peter Gammon, Philip Mawby, Vishal Shah
In this report, the advanced manufacturing advantages of using supersaturated chlorinated chemistry are demonstrated at 1550 °C in 4H‐silicon carbide (4H‐SiC) epitaxy on trenches with different geometric profiles. Sloped mesa sidewalls (8°) show improved filling behavior compared with vertical sidewalls (2°) and lower the optimum chlorine/silicon ratio (Si:Cl) required to complete filling. Both the optimum Cl:Si ratio (10) and sidewall angle are lower for wider trench openings, allowing complete fill of 3 µm wide trenches (8 µm pitch, 5 µm depth) at a filling rate of 19 µm h−1. Excessive hydrogen chloride (HCl) diminishes filling by reducing sidewall growth and can also produce an end surface with very rough topography. This work demonstrates the importance of trench geometry on both the filling behavior and process optimization in chlorinated trench filling epitaxy for the manufacture of 4H‐SiC superjunction power electronics.
{"title":"Effect of Mesa Sidewall Angle on 4H‐Silicon Carbide Trench Filling Epitaxy Using Trichlorosilane and Hydrogen Chloride","authors":"Kelly Turner, Gerard Colston, Katarzyna Stokeley, Andrew Newton, Arne Renz, Marina Antoniou, Peter Gammon, Philip Mawby, Vishal Shah","doi":"10.1002/admi.202400466","DOIUrl":"https://doi.org/10.1002/admi.202400466","url":null,"abstract":"In this report, the advanced manufacturing advantages of using supersaturated chlorinated chemistry are demonstrated at 1550 °C in 4H‐silicon carbide (4H‐SiC) epitaxy on trenches with different geometric profiles. Sloped mesa sidewalls (8°) show improved filling behavior compared with vertical sidewalls (2°) and lower the optimum chlorine/silicon ratio (Si:Cl) required to complete filling. Both the optimum Cl:Si ratio (10) and sidewall angle are lower for wider trench openings, allowing complete fill of 3 µm wide trenches (8 µm pitch, 5 µm depth) at a filling rate of 19 µm h<jats:sup>−1</jats:sup>. Excessive hydrogen chloride (HCl) diminishes filling by reducing sidewall growth and can also produce an end surface with very rough topography. This work demonstrates the importance of trench geometry on both the filling behavior and process optimization in chlorinated trench filling epitaxy for the manufacture of 4H‐SiC superjunction power electronics.","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Najma Khatoon, Binod Subedi, Ahmad Majed, Shiping Wang, Jibao He, Julie N.L. Albert, Michael Naguib, Douglas B Chrisey
Intercalation is a powerful approach to customize the properties of layered materials such as titanium carbide (Ti3C2Tx) MXenes. Photonic curing, a novel technique employing intense pulsed light from a xenon flashlamp (≈280–1100 nm wavelength range), offers significant advantages over conventional annealing methods. The pulsed nature of photonic curing enables rapid quenching, which allows trapping of metastable states and the formation of unique nanostructures. Herein, this work reports on the ion exchange intercalation of Ti3C2Tx MXenes with aminopropyl terminated polydimethylsiloxane (amino‐PDMS) and the subsequent application of photonic curing to study pyrolysis of intercalated PDMS. The results showed an increase in the interlayer spacing (d‐spacing) of Ti3C2Tx from 1 to 13.5 nm for the 5 kg mol−1 amino‐PDMS (5K‐PDMS) intercalant. After photonic curing, the intercalated PDMS is converted into SiOx or silicon oxycarbide, and the d‐spacing decreased from 13.5 to 11 nm. Furthermore, curing the intercalated MXenes under controlled pressure in different gas environments, this work observes the conversion of PDMS to silicon carbide on the surface of MXenes layers. This study demonstrates the potential of photonic curing as a promising approach for cost‐effective, instantaneous, and scalable synthesis of customizable layered materials with precise control over the nanostructure within the layers.
{"title":"Synthesis and Photothermal Processing of Silicon‐Based Nanoconfined MXenes","authors":"Najma Khatoon, Binod Subedi, Ahmad Majed, Shiping Wang, Jibao He, Julie N.L. Albert, Michael Naguib, Douglas B Chrisey","doi":"10.1002/admi.202400447","DOIUrl":"https://doi.org/10.1002/admi.202400447","url":null,"abstract":"Intercalation is a powerful approach to customize the properties of layered materials such as titanium carbide (Ti<jats:sub>3</jats:sub>C<jats:sub>2</jats:sub>T<jats:italic><jats:sub>x</jats:sub></jats:italic>) MXenes. Photonic curing, a novel technique employing intense pulsed light from a xenon flashlamp (≈280–1100 nm wavelength range), offers significant advantages over conventional annealing methods. The pulsed nature of photonic curing enables rapid quenching, which allows trapping of metastable states and the formation of unique nanostructures. Herein, this work reports on the ion exchange intercalation of Ti<jats:sub>3</jats:sub>C<jats:sub>2</jats:sub>T<jats:italic><jats:sub>x</jats:sub></jats:italic> MXenes with aminopropyl terminated polydimethylsiloxane (amino‐PDMS) and the subsequent application of photonic curing to study pyrolysis of intercalated PDMS. The results showed an increase in the interlayer spacing (<jats:italic>d</jats:italic>‐spacing) of Ti<jats:sub>3</jats:sub>C<jats:sub>2</jats:sub>T<jats:italic><jats:sub>x</jats:sub></jats:italic> from 1 to 13.5 nm for the 5 kg mol<jats:sup>−1</jats:sup> amino‐PDMS (5K‐PDMS) intercalant. After photonic curing, the intercalated PDMS is converted into SiO<jats:sub>x</jats:sub> or silicon oxycarbide, and the <jats:italic>d</jats:italic>‐spacing decreased from 13.5 to 11 nm. Furthermore, curing the intercalated MXenes under controlled pressure in different gas environments, this work observes the conversion of PDMS to silicon carbide on the surface of MXenes layers. This study demonstrates the potential of photonic curing as a promising approach for cost‐effective, instantaneous, and scalable synthesis of customizable layered materials with precise control over the nanostructure within the layers.","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marvin Kloß, Michael Beerbaum, Dominik Baier, Christian Weinberger, Frederik Zysk, Hossam Elgabarty, Thomas D. Kühne, Michael Tiemann
CPO‐27 is a metal‐organic framework (MOF) with coordinatively unsaturated metal centers (open metal sites). It is therefore an ideal host material for small guest molecules, including water. This opens up numerous possible applications, such as proton conduction, humidity sensing, water harvesting, or adsorption‐driven heat pumps. For all of these applications, profound knowledge of the adsorption and desorption of water in the micropores is mandatory. The hydration and water structure in CPO‐27‐M (M = Zn or Cu) is investigated using water vapor sorption, Fourier transform infrared (FTIR) spectroscopy, density functional theory (DFT) calculations, and molecular dynamics simulation. In the pores of CPO‐27‐Zn, water binds as a ligand to the Zn center. Additional water molecules are stepwise incorporated at defined positions, forming a network of H‐bonds with the framework and with each other. In CPO‐27‐Cu, hydration proceeds by an entirely different mechanism. Here, water does not coordinate to the metal center, but only forms H‐bonds with the framework; pore filling occurs mostly in a single step, with the open metal site remaining unoccupied. Water in the pores forms clusters with extensive intra‐cluster H‐bonding.
{"title":"Understanding Hydration in CPO‐27 Metal‐Organic Frameworks: Strong Impact of the Chemical Nature of the Metal (Cu, Zn)","authors":"Marvin Kloß, Michael Beerbaum, Dominik Baier, Christian Weinberger, Frederik Zysk, Hossam Elgabarty, Thomas D. Kühne, Michael Tiemann","doi":"10.1002/admi.202400476","DOIUrl":"https://doi.org/10.1002/admi.202400476","url":null,"abstract":"CPO‐27 is a metal‐organic framework (MOF) with coordinatively unsaturated metal centers (open metal sites). It is therefore an ideal host material for small guest molecules, including water. This opens up numerous possible applications, such as proton conduction, humidity sensing, water harvesting, or adsorption‐driven heat pumps. For all of these applications, profound knowledge of the adsorption and desorption of water in the micropores is mandatory. The hydration and water structure in CPO‐27‐<jats:italic>M</jats:italic> (<jats:italic>M</jats:italic> = Zn or Cu) is investigated using water vapor sorption, Fourier transform infrared (FTIR) spectroscopy, density functional theory (DFT) calculations, and molecular dynamics simulation. In the pores of CPO‐27‐Zn, water binds as a ligand to the Zn center. Additional water molecules are stepwise incorporated at defined positions, forming a network of H‐bonds with the framework and with each other. In CPO‐27‐Cu, hydration proceeds by an entirely different mechanism. Here, water does not coordinate to the metal center, but only forms H‐bonds with the framework; pore filling occurs mostly in a single step, with the open metal site remaining unoccupied. Water in the pores forms clusters with extensive intra‐cluster H‐bonding.","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yanan Li, Nian Li, Constantin Harder, Shanshan Yin, Yusuf Bulut, Apostolos Vagias, Peter M. Schneider, Wei Chen, Stephan V. Roth, Aliaksandr S. Bandarenka, Peter Müller‐Buschbaum
Zinc titanate films with mesoporous structures have widespread applications ranging from sensors to supercapacitors and bio‐devices owing to their photoelectric properties and specific surface area. The present work investigates the morphology of mesoporous zinc titanate films obtained by calcination of hybrid thin films containing polymer templates and precursor mixtures of zinc acetate dihydrate (ZAD) and titanium isopropoxide (TTIP). ZnO and TiO2 films are fabricated for reference. The influences of hydrochloric acid contents (HCl), the ratios of ZAD and TTIP, and the solution concentrations on the film morphologies are studied. The amphiphilic diblock copolymer, polystyrene‐block‐polyethylene oxide (PS‐b‐PEO), plays the role of a structure directing template, as it self‐assembles into micelles in a solvent‐acid mixture of N, N‐dimethylformamide (DMF) and HCl. Thin films are prepared with spin‐coating and subsequent calcination. Adjusting the ratio of TTIP and ZAD leads to the structure evolution from order to disorder in a film. It depends on the hydrolysis and condensation processes of the precursors, providing different time‐to‐growth processes to control the film morphologies. An increase in solution concentration enhances the surface coverage. As probed with grazing‐incidence small‐angle X‐ray scattering, the inner structures are larger than the surface structures seen in scanning electron microscopy.
{"title":"Factors Shaping the Morphology in Sol‐Gel Derived Mesoporous Zinc Titanate Films: Unveiling the Role of Precursor Competition and Concentration","authors":"Yanan Li, Nian Li, Constantin Harder, Shanshan Yin, Yusuf Bulut, Apostolos Vagias, Peter M. Schneider, Wei Chen, Stephan V. Roth, Aliaksandr S. Bandarenka, Peter Müller‐Buschbaum","doi":"10.1002/admi.202400215","DOIUrl":"https://doi.org/10.1002/admi.202400215","url":null,"abstract":"Zinc titanate films with mesoporous structures have widespread applications ranging from sensors to supercapacitors and bio‐devices owing to their photoelectric properties and specific surface area. The present work investigates the morphology of mesoporous zinc titanate films obtained by calcination of hybrid thin films containing polymer templates and precursor mixtures of zinc acetate dihydrate (ZAD) and titanium isopropoxide (TTIP). ZnO and TiO<jats:sub>2</jats:sub> films are fabricated for reference. The influences of hydrochloric acid contents (HCl), the ratios of ZAD and TTIP, and the solution concentrations on the film morphologies are studied. The amphiphilic diblock copolymer, polystyrene‐<jats:italic>block</jats:italic>‐polyethylene oxide (PS‐<jats:italic>b</jats:italic>‐PEO), plays the role of a structure directing template, as it self‐assembles into micelles in a solvent‐acid mixture of N, N‐dimethylformamide (DMF) and HCl. Thin films are prepared with spin‐coating and subsequent calcination. Adjusting the ratio of TTIP and ZAD leads to the structure evolution from order to disorder in a film. It depends on the hydrolysis and condensation processes of the precursors, providing different time‐to‐growth processes to control the film morphologies. An increase in solution concentration enhances the surface coverage. As probed with grazing‐incidence small‐angle X‐ray scattering, the inner structures are larger than the surface structures seen in scanning electron microscopy.","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Francis Lockwood Estrin, Oliver S.J. Hagger, M. Emre Sener, Daren J. Caruana
Metal Printing
In article 2400256, Daren J. Caruana and co-workers develop a single step method for depositing silver and copper tracks on a variety of dielectrics using an atmospheric pressure plasma jet. Particle free aqueous based metal salts are required as inks, which are reduced by the action of the plasma electrons and sintered. The resulting highly conductive and adhesive tracks may be deposited on glass, ceramics, polymeric materials, and even biological surfaces with zero damage to the substrates.
金属印刷在第 2400256 号文章中，Daren J. Caruana 及其合作者开发了一种使用大气压等离子体喷射在各种电介质上沉积银和铜轨道的单步法。需要无颗粒的水基金属盐作为油墨，在等离子电子的作用下还原并烧结。产生的高导电性和粘性轨道可沉积在玻璃、陶瓷、聚合材料甚至生物表面上，对基底无任何损害。
{"title":"Metal Painting by Plasma Jet (Adv. Mater. Interfaces 24/2024)","authors":"Francis Lockwood Estrin, Oliver S.J. Hagger, M. Emre Sener, Daren J. Caruana","doi":"10.1002/admi.202470062","DOIUrl":"https://doi.org/10.1002/admi.202470062","url":null,"abstract":"<p><b>Metal Printing</b></p><p>In article 2400256, Daren J. Caruana and co-workers develop a single step method for depositing silver and copper tracks on a variety of dielectrics using an atmospheric pressure plasma jet. Particle free aqueous based metal salts are required as inks, which are reduced by the action of the plasma electrons and sintered. The resulting highly conductive and adhesive tracks may be deposited on glass, ceramics, polymeric materials, and even biological surfaces with zero damage to the substrates.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.202470062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142152216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Junyao Zhang, Daniele Marciano, Lei Wang, Weiwei Wang, Manfred Gossen, Mengting Yang, Tingying Peng, Julien Gautrot, Xun Xu, Nan Ma
Lung diseases are one of the leading causes of global mortality. Advances in induced pluripotent stem cell (iPSC) differentiation have enabled the creation of bronchiolar and alveolar lung organoids, advancing research on lung conditions. Traditional Matrigel encapsulation, reliant on the spontaneous assembly and propagation of cells with limited external intervention, often results in variability and low reproducibility. The absence of hyaluronic acid (HA) in Matrigel, a key lung extracellular matrix component, limits bronchiolar and alveolar cell differentiation, reducing the efficacy and reproducibility of iPSC‐derived organoid generation. To address this, a novel hybrid hydrogel combining HA and 23% Matrigel, inspired by the natural lung environment, is developed. This hydrogel offers improved biochemical support and viscoelastic properties, significantly accelerating organoid development. Within eight days, the hydrogel produces uniformly sized organoids containing both bronchiolar and alveolar epithelial cells. Increased levels of active mechanosensors and transducers, including PIEZO1, Integrin, and Myosin, suggest that the hydrogel's altered viscoelasticity triggers a mechanotransduction cascade. This bioinspired hydrogel provides a robust, fast model for biomedical research, facilitating rapid drug screening, respiratory disease treatment studies, and surfactant trafficking investigations. Furthermore, it enables the exploration of underlying biomechanical mechanisms to enhance the controllability of organoid generation and maturation.
{"title":"Bioinspired Hyaluronic Acid‐Based Hydrogel Fuels Bi‐Directional Lung Organoid Maturation via PIEZO1 and ITGB1 Mediated Mechanosensation","authors":"Junyao Zhang, Daniele Marciano, Lei Wang, Weiwei Wang, Manfred Gossen, Mengting Yang, Tingying Peng, Julien Gautrot, Xun Xu, Nan Ma","doi":"10.1002/admi.202400194","DOIUrl":"https://doi.org/10.1002/admi.202400194","url":null,"abstract":"Lung diseases are one of the leading causes of global mortality. Advances in induced pluripotent stem cell (iPSC) differentiation have enabled the creation of bronchiolar and alveolar lung organoids, advancing research on lung conditions. Traditional Matrigel encapsulation, reliant on the spontaneous assembly and propagation of cells with limited external intervention, often results in variability and low reproducibility. The absence of hyaluronic acid (HA) in Matrigel, a key lung extracellular matrix component, limits bronchiolar and alveolar cell differentiation, reducing the efficacy and reproducibility of iPSC‐derived organoid generation. To address this, a novel hybrid hydrogel combining HA and 23% Matrigel, inspired by the natural lung environment, is developed. This hydrogel offers improved biochemical support and viscoelastic properties, significantly accelerating organoid development. Within eight days, the hydrogel produces uniformly sized organoids containing both bronchiolar and alveolar epithelial cells. Increased levels of active mechanosensors and transducers, including PIEZO1, Integrin, and Myosin, suggest that the hydrogel's altered viscoelasticity triggers a mechanotransduction cascade. This bioinspired hydrogel provides a robust, fast model for biomedical research, facilitating rapid drug screening, respiratory disease treatment studies, and surfactant trafficking investigations. Furthermore, it enables the exploration of underlying biomechanical mechanisms to enhance the controllability of organoid generation and maturation.","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142226131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lena J. Stenke, Melanie Weiß, Ivan Grishchuk, Barbara Saccà
In this study, the hierarchical assembly of DNA origami filaments (DOF) initiated by an autocatalytic DNA reaction network (DRN) is investigated. The so‐formed filaments are subsequently disassembled by toehold‐mediated strand displacement mechanisms. Using fluorescence resonance energy transfer, the kinetics of DOF growth after direct addition of fuel and compared it to the polymerization process triggered by the release of fuel from the DRN is monitored. Optimization of design and experimental conditions enabled to fine‐tune the kinetics of the two processes, ensuring that the release of fuel from the DRN outpaced the consumption of fuel by the downstream polymerization reaction. This resulted in a sustained and controlled DOF growth leading to micrometer‐long filament structures. Finally, although the presence of a toehold in the fuel strand reduced the efficiency of monomer association in the polymerization process, a 10‐fold excess of the anti‐fuel strand is efficient in dissociating the filament structures, permitting a potential reset for new reactions. The study shows that the kinetics of DNA origami filaments growth can be finely manipulated by a cascade of upstream reactions, suggesting alternative approaches for the creation of programmable DNA‐based nanomaterials that can sense and respond to more complex and distant events.
本研究探讨了由自催化 DNA 反应网络（DRN）引发的 DNA 折纸细丝（DOF）的分层组装。由此形成的细丝随后在趾hold介导的链位移机制下被分解。利用荧光共振能量转移技术监测了直接添加燃料后 DOF 的生长动力学，并将其与 DRN 释放燃料引发的聚合过程进行了比较。通过优化设计和实验条件，对这两个过程的动力学进行了微调，确保 DRN 释放燃料的速度超过下游聚合反应消耗燃料的速度。这样，DOF 的增长就得到了持续和可控的控制，从而形成了微米长的丝状结构。最后，虽然燃料链中存在的趾痕降低了聚合过程中单体结合的效率，但过量 10 倍的反燃料链可以有效地解离丝状结构，从而为新反应提供了潜在的重置机会。这项研究表明，DNA 折纸细丝的生长动力学可以通过一连串的上游反应进行微调，这为创造可编程 DNA 纳米材料提供了另一种方法，这种材料可以感知和响应更复杂、更遥远的事件。
{"title":"Coupling DNA Origami Filament Growth to an Autocatalytic Production of Fuel","authors":"Lena J. Stenke, Melanie Weiß, Ivan Grishchuk, Barbara Saccà","doi":"10.1002/admi.202400674","DOIUrl":"https://doi.org/10.1002/admi.202400674","url":null,"abstract":"In this study, the hierarchical assembly of DNA origami filaments (DOF) initiated by an autocatalytic DNA reaction network (DRN) is investigated. The so‐formed filaments are subsequently disassembled by toehold‐mediated strand displacement mechanisms. Using fluorescence resonance energy transfer, the kinetics of DOF growth after direct addition of fuel and compared it to the polymerization process triggered by the release of fuel from the DRN is monitored. Optimization of design and experimental conditions enabled to fine‐tune the kinetics of the two processes, ensuring that the release of fuel from the DRN outpaced the consumption of fuel by the downstream polymerization reaction. This resulted in a sustained and controlled DOF growth leading to micrometer‐long filament structures. Finally, although the presence of a toehold in the fuel strand reduced the efficiency of monomer association in the polymerization process, a 10‐fold excess of the anti‐fuel strand is efficient in dissociating the filament structures, permitting a potential reset for new reactions. The study shows that the kinetics of DNA origami filaments growth can be finely manipulated by a cascade of upstream reactions, suggesting alternative approaches for the creation of programmable DNA‐based nanomaterials that can sense and respond to more complex and distant events.","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexander F Mason, Shelley FJ Wickham, Matthew AB Baker
Droplet interface bilayers (DIBs) offer a controlled lipid environment for studying membrane‐bound processes, with applications in artificial cells, biosensing, and biophysics. Current DIB fabrication faces challenges due to time‐consuming processes and specialized equipment, limiting scale‐up and hindering statistical significance in single‐molecule assays. This research introduces “DIB‐BOT,” an open‐source solution combining a nanoinjector and a 3D printer. DIB‐BOT enables rapid, reproducible DIB fabrication, overcoming manual limitations. Using off‐the‐shelf components, DIB‐BOT ensures high spatial reproducibility, minimal user input, and scalable experiments. The system's utility is demonstrated through pairwise droplet assembly and a fluorescence plate‐reader assay. Compared to manual fabrication, DIB‐BOT shows a 10‐fold reduction in droplet volume error, a threefold reduction in positional error, and 100% droplet yield. This method lowers entry barriers to DIB research, expanding its applications and enhancing data quality.
{"title":"DIB‐BOT: An Open‐Source Hardware Approach for Plate‐Integrated Droplet Interface Bilayer Deposition","authors":"Alexander F Mason, Shelley FJ Wickham, Matthew AB Baker","doi":"10.1002/admi.202400413","DOIUrl":"https://doi.org/10.1002/admi.202400413","url":null,"abstract":"Droplet interface bilayers (DIBs) offer a controlled lipid environment for studying membrane‐bound processes, with applications in artificial cells, biosensing, and biophysics. Current DIB fabrication faces challenges due to time‐consuming processes and specialized equipment, limiting scale‐up and hindering statistical significance in single‐molecule assays. This research introduces “DIB‐BOT,” an open‐source solution combining a nanoinjector and a 3D printer. DIB‐BOT enables rapid, reproducible DIB fabrication, overcoming manual limitations. Using off‐the‐shelf components, DIB‐BOT ensures high spatial reproducibility, minimal user input, and scalable experiments. The system's utility is demonstrated through pairwise droplet assembly and a fluorescence plate‐reader assay. Compared to manual fabrication, DIB‐BOT shows a 10‐fold reduction in droplet volume error, a threefold reduction in positional error, and 100% droplet yield. This method lowers entry barriers to DIB research, expanding its applications and enhancing data quality.","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The use of ultrashort pulse lasers opens up a wide range of possibilities for processing dielectric materials. The present study focuses on the investigation of the ablation‐free microscopic surface modification of borosilicate glass using femtosecond laser radiation (350 fs at 515 nm wavelength) in a scanning machining process. Furthermore, its aim is to analyze the relationship between the laser process parameters and the microscopic changes in the surface topography observed. The characteristic of the generated surface structure, which takes place below the ablation threshold, shows both elevations and depressions within the irradiated field (2 × 2 mm2). The realized structures reach a profile height Peak‐to‐Valley (PV) of up to 10 µm. The amount of surface deformation depends on the selected parameters such as laser fluence, number of passes, and scanning strategy. The microdeformation is detected on both the top and bottom sides of the processed glass material with a thickness ≤1 mm. The influence of the temporal and spatial energy distribution on the material modification is discussed, demonstrating the possibilities of microforming of silicate glasses using ultrashort pulsed laser radiation.
{"title":"Targeted Microforming of Borosilicate Glass Induced by a Laser‐Ablation‐Free Process Using Femtosecond Pulses","authors":"Marina Skiba, Steffen Resche, Michael Seiler, Andrés Fabián Lasagni, Jens Bliedtner","doi":"10.1002/admi.202400439","DOIUrl":"https://doi.org/10.1002/admi.202400439","url":null,"abstract":"The use of ultrashort pulse lasers opens up a wide range of possibilities for processing dielectric materials. The present study focuses on the investigation of the ablation‐free microscopic surface modification of borosilicate glass using femtosecond laser radiation (350 fs at 515 nm wavelength) in a scanning machining process. Furthermore, its aim is to analyze the relationship between the laser process parameters and the microscopic changes in the surface topography observed. The characteristic of the generated surface structure, which takes place below the ablation threshold, shows both elevations and depressions within the irradiated field (2 × 2 mm<jats:sup>2</jats:sup>). The realized structures reach a profile height Peak‐to‐Valley (PV) of up to 10 µm. The amount of surface deformation depends on the selected parameters such as laser fluence, number of passes, and scanning strategy. The microdeformation is detected on both the top and bottom sides of the processed glass material with a thickness ≤1 mm. The influence of the temporal and spatial energy distribution on the material modification is discussed, demonstrating the possibilities of microforming of silicate glasses using ultrashort pulsed laser radiation.","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":null,"pages":null},"PeriodicalIF":5.4,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142202945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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