Lukas Hennerici, Paula Ficht, Maximilian Schamel, Ulrich Mansfeld, Mario Linz, Daniel Paulus, Jaroslaw Kita, Michael A. Danzer, Ralf Moos
Lithium‐based all‐solid‐state batteries (ASSBs) are attracting worldwide attention as the next step in the evolution of Li‐ion batteries (LIBs). They have the potential to address safety concerns and limited energy densities, which are key challenges for LIBs. The current focus is on enhancing the electrochemical properties of ASSBs. However, a suitable economic method for fabricating them remains to be established, especially when ceramic materials are used as solid electrolytes. The powder aerosol deposition method (PAD or ADM) is a ceramic processing method that uses raw ceramic powders to fabricate dense, several micrometer thick ceramic films. The entire process takes place at room temperature and in the absence of additional binders. Therefore, PAD is used in this study to fabricate ASSBs with LiNi0.83Mn0.11Co0.06O2 (NMC) as the cathode active material and Al0.2Li6.025La3Zr1.625Ta0.375O12 (LLZO) as the solid electrolyte. The cathode is fabricated as a composite with a gradient in the electrolyte concentration. The successful fabrication is confirmed through scanning electron microscopy and energy‐dispersive X‐ray spectroscopy analysis. Electrochemical characterization shows that a PAD‐ASSB can be cycled. Furthermore, it can be shown that 145 µm thick NMC films can be fabricated by PAD. The electrochemical results are compared with the theoretical potential of PAD‐ASSBs, and methods to further improve the achieved state are discussed.
{"title":"Lithium All‐Solid‐State Batteries Fabricated at Room Temperature by the Powder Aerosol Deposition Method with Garnet‐Type Electrolyte and Graded Composite Cathode","authors":"Lukas Hennerici, Paula Ficht, Maximilian Schamel, Ulrich Mansfeld, Mario Linz, Daniel Paulus, Jaroslaw Kita, Michael A. Danzer, Ralf Moos","doi":"10.1002/admt.202400745","DOIUrl":"https://doi.org/10.1002/admt.202400745","url":null,"abstract":"Lithium‐based all‐solid‐state batteries (ASSBs) are attracting worldwide attention as the next step in the evolution of Li‐ion batteries (LIBs). They have the potential to address safety concerns and limited energy densities, which are key challenges for LIBs. The current focus is on enhancing the electrochemical properties of ASSBs. However, a suitable economic method for fabricating them remains to be established, especially when ceramic materials are used as solid electrolytes. The powder aerosol deposition method (PAD or ADM) is a ceramic processing method that uses raw ceramic powders to fabricate dense, several micrometer thick ceramic films. The entire process takes place at room temperature and in the absence of additional binders. Therefore, PAD is used in this study to fabricate ASSBs with LiNi<jats:sub>0.83</jats:sub>Mn<jats:sub>0.11</jats:sub>Co<jats:sub>0.06</jats:sub>O<jats:sub>2</jats:sub> (NMC) as the cathode active material and Al<jats:sub>0.2</jats:sub>Li<jats:sub>6.025</jats:sub>La<jats:sub>3</jats:sub>Zr<jats:sub>1.625</jats:sub>Ta<jats:sub>0.375</jats:sub>O<jats:sub>12</jats:sub> (LLZO) as the solid electrolyte. The cathode is fabricated as a composite with a gradient in the electrolyte concentration. The successful fabrication is confirmed through scanning electron microscopy and energy‐dispersive X‐ray spectroscopy analysis. Electrochemical characterization shows that a PAD‐ASSB can be cycled. Furthermore, it can be shown that 145 µm thick NMC films can be fabricated by PAD. The electrochemical results are compared with the theoretical potential of PAD‐ASSBs, and methods to further improve the achieved state are discussed.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shenglin Zhou, Jiapeng Zhang, Jun Hu, Junbo You, Baoqing Shentu
The development of novel material configurations for achieving high‐performance electromagnetic interference (EMI) shielding remains challenging. To effectively address this issue, in this work, a structure composed of Ag‐modified whisker carbon nanotube (Ag@WCNT) coated with 2D MXene composite is fabricated. The proposed EMI shielding material with different structures (double‐layer and sandwich structures) exhibited high shielding effectiveness close to 85 dB at X‐band. Its lightweight structure allowed for efficient shielding without significant weight gain, which is especially important in applications such as aerospace, mobile communications equipment, and others where lightweight is required. The high degree of tunability of these composites can be leveraged for meeting specific application requirements. This property renders them promising candidates for a wide range of electromagnetic shielding applications.
开发新型材料配置以实现高性能电磁干扰（EMI）屏蔽仍然具有挑战性。为有效解决这一问题，本研究制作了一种由二维 MXene 复合材料涂覆的 Ag 改性晶须碳纳米管（Ag@WCNT）组成的结构。所提出的 EMI 屏蔽材料具有不同的结构（双层结构和三明治结构），在 X 波段具有接近 85 dB 的高屏蔽效能。其轻质结构可在不显著增加重量的情况下实现高效屏蔽，这在航空航天、移动通信设备等要求轻质的应用中尤为重要。这些复合材料的高度可调性可用于满足特定的应用要求。这一特性使它们成为各种电磁屏蔽应用的理想候选材料。
{"title":"MXene/Ag@whisker Carbon Nanotube‐Based Sandwich Structures for High‐Performance Electromagnetic Interference Shielding","authors":"Shenglin Zhou, Jiapeng Zhang, Jun Hu, Junbo You, Baoqing Shentu","doi":"10.1002/admt.202401266","DOIUrl":"https://doi.org/10.1002/admt.202401266","url":null,"abstract":"The development of novel material configurations for achieving high‐performance electromagnetic interference (EMI) shielding remains challenging. To effectively address this issue, in this work, a structure composed of Ag‐modified whisker carbon nanotube (Ag@WCNT) coated with 2D MXene composite is fabricated. The proposed EMI shielding material with different structures (double‐layer and sandwich structures) exhibited high shielding effectiveness close to 85 dB at X‐band. Its lightweight structure allowed for efficient shielding without significant weight gain, which is especially important in applications such as aerospace, mobile communications equipment, and others where lightweight is required. The high degree of tunability of these composites can be leveraged for meeting specific application requirements. This property renders them promising candidates for a wide range of electromagnetic shielding applications.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dandan Peng, Xinyue He, Zhangmei Hu, Jacson Weber de Menezes, Chiara Valsecchi, Meikun Fan
Rapid, in situ, and real‐time molecule mapping on rough surfaces with high accuracy has long been one of the paramount challenges in many fields. Here, an effortless Ag NPs doped glycerol liquid film SERS substrate (g‐LFS) is developed to investigate the distribution of contaminants on different types of rough surfaces. After substrate optimization, the g‐LFS is characterized in terms of uniformity, reproducibility, and stability with time. The substrate showed an excellent signal stability, even after 96.5 h of usage or 19 days of storage, together with great uniformity (7.4% RSD) and reproducibility (7.1% RSD). As a proof of concept, the distribution of Rhodamine 6G(R6G) dye on rough fabric and the R6G migration in different plant types and tissues have been explored. The g‐LFS substrate demonstrated great accuracy, detecting R6G even in deep fabric grooves, recovering 82.4% of the initial concentration. Moreover, the g‐LFS SERS substrate detected significantly different concentrations in root, stem and leave tissues of bean sprouts, as well as between xylem and phloem in vascular plant branches. Overall, the g‐LFS substrate is proven to be well‐suited for in situ detection on rough surfaces with great versatility and robustness, aggregating new opportunities for contaminant investigation on food and plants using SERS.
{"title":"A Robust, Uniform, and Stable Glycerol Liquid Film Substrate for In Situ SERS Quantitative Investigation of Contaminant Distribution on Rough Surfaces","authors":"Dandan Peng, Xinyue He, Zhangmei Hu, Jacson Weber de Menezes, Chiara Valsecchi, Meikun Fan","doi":"10.1002/admt.202400912","DOIUrl":"https://doi.org/10.1002/admt.202400912","url":null,"abstract":"Rapid, in situ, and real‐time molecule mapping on rough surfaces with high accuracy has long been one of the paramount challenges in many fields. Here, an effortless Ag NPs doped glycerol liquid film SERS substrate (g‐LFS) is developed to investigate the distribution of contaminants on different types of rough surfaces. After substrate optimization, the g‐LFS is characterized in terms of uniformity, reproducibility, and stability with time. The substrate showed an excellent signal stability, even after 96.5 h of usage or 19 days of storage, together with great uniformity (7.4% RSD) and reproducibility (7.1% RSD). As a proof of concept, the distribution of Rhodamine 6G(R6G) dye on rough fabric and the R6G migration in different plant types and tissues have been explored. The g‐LFS substrate demonstrated great accuracy, detecting R6G even in deep fabric grooves, recovering 82.4% of the initial concentration. Moreover, the g‐LFS SERS substrate detected significantly different concentrations in root, stem and leave tissues of bean sprouts, as well as between xylem and phloem in vascular plant branches. Overall, the g‐LFS substrate is proven to be well‐suited for in situ detection on rough surfaces with great versatility and robustness, aggregating new opportunities for contaminant investigation on food and plants using SERS.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhidong Ma, Shaofan Fang, Bo Zhou, Chunmei Yan, Zhaofeng Wang
The structural nondestructive, recoverable, and persistent mechanoluminescence (ML) is particularly required for mechanics‐driven displaying, imaging, and visualization applications. Inspired by the luminescent physics of the long afterglow materials, this work reports the ML of SrMg2(PO4)2:Eu2+ by incorporating the powders into a flexible polydimethylsiloxane (PDMS). The results suggest that the ML from the SrMg2(PO4)2:Eu2+/PDMS is recoverable with a linear responsiveness to the applied stress/strain. Moreover, the SrMg2(PO4)2:Eu2+/PDMS exhibits ML afterglow (persistent ML), which could continuously emit luminescence after removing the mechanics stimulus source. The discussions from the matrix effects, the trap structure evolutions, and the piezoelectricity properties suggest that the piezoelectric field‐assisted trap‐controlled processes shall be responsible for the ML and the persistent ML, which can be further improved by co‐doping Ho3+. Based on the recoverable and persistent ML, two types of attractive applications in terms of the intelligent collision early‐warning system and the flexible displaying paper are developed, respectively. This work not only achieves the recoverable and persistent ML for representative applications, but also provides deep insight into the physical process, which should be valuable to guide future research.
力学驱动的显示、成像和可视化应用尤其需要结构无损、可恢复和持久的机械发光（ML）。受长余辉材料发光物理学的启发，本研究报告了通过将 SrMg2(PO4)2:Eu2+粉末融入柔性聚二甲基硅氧烷（PDMS）而获得的 ML。结果表明，SrMg2(PO4)2:Eu2+/PDMS 的 ML 可恢复，对施加的应力/应变呈线性响应。此外，SrMg2(PO4)2:Eu2+/PDMS 还表现出 ML 余辉（持续 ML），在移除力学刺激源后仍能持续发光。从基体效应、阱结构演变和压电特性等方面的讨论表明，压电场辅助的阱控制过程是产生 ML 和持续 ML 的原因，而通过共掺杂 Ho3+ 可以进一步提高 ML 的性能。在可恢复性和持久性 ML 的基础上，分别开发出了智能碰撞预警系统和柔性显示纸两种极具吸引力的应用。这项工作不仅为具有代表性的应用实现了可恢复性和持久性 ML，而且对物理过程进行了深入研究，对指导未来研究具有重要价值。
{"title":"Trap‐Controlled, Recoverable, and Persistent Mechanoluminescence for Collision Early‐Warning and Mechanics Displaying Applications","authors":"Zhidong Ma, Shaofan Fang, Bo Zhou, Chunmei Yan, Zhaofeng Wang","doi":"10.1002/admt.202401079","DOIUrl":"https://doi.org/10.1002/admt.202401079","url":null,"abstract":"The structural nondestructive, recoverable, and persistent mechanoluminescence (ML) is particularly required for mechanics‐driven displaying, imaging, and visualization applications. Inspired by the luminescent physics of the long afterglow materials, this work reports the ML of SrMg<jats:sub>2</jats:sub>(PO<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>:Eu<jats:sup>2+</jats:sup> by incorporating the powders into a flexible polydimethylsiloxane (PDMS). The results suggest that the ML from the SrMg<jats:sub>2</jats:sub>(PO<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>:Eu<jats:sup>2+</jats:sup>/PDMS is recoverable with a linear responsiveness to the applied stress/strain. Moreover, the SrMg<jats:sub>2</jats:sub>(PO<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>:Eu<jats:sup>2+</jats:sup>/PDMS exhibits ML afterglow (persistent ML), which could continuously emit luminescence after removing the mechanics stimulus source. The discussions from the matrix effects, the trap structure evolutions, and the piezoelectricity properties suggest that the piezoelectric field‐assisted trap‐controlled processes shall be responsible for the ML and the persistent ML, which can be further improved by co‐doping Ho<jats:sup>3+</jats:sup>. Based on the recoverable and persistent ML, two types of attractive applications in terms of the intelligent collision early‐warning system and the flexible displaying paper are developed, respectively. This work not only achieves the recoverable and persistent ML for representative applications, but also provides deep insight into the physical process, which should be valuable to guide future research.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rui Yang, Zhangjie Luo, Jing Cheng Liang, Jun Yan Dai, Qiang Cheng, Tie Jun Cui
Multi‐functional metasurfaces have shown great promise in tackling complex electromagnetic issues. Reconfigurable frequency‐selective Rasorbers (FSRs) have recently received growing attraction, but existing designs are constrained in their switchable modes, typically limited to FSR/Absorber or FSR/frequency‐selective surface (FSS). To address this limitation, a new metasurface that integrates four different functioning modes, including FSR, FSS, Absorber, and Reflector is proposed, which can be dynamically switched as demanded. The design is based on the theoretical network model analysis, and its intriguing performances are verified through simulations and experiments both in frequency and time domains. The results show that the FSR and Absorber modes exhibit wide low‐scattering bandwidths with narrow transmission windows that can be turned on or off. These two modes also eliminate the sputtering effect, making it suitable for stealth applications. In contrast, the Reflector mode is efficient in blocking microwaves across a broad spectrum, and a transmission window can be opened in the FSS mode. It is believed this multi‐functional metasurface can serve as a radome to protect against various challenges such as detection, interference, and high‐power invasion.
{"title":"Reconfigurable Metasurface with Multiple Functionalities of Frequency‐Selective Rasorber, Frequency‐Selective Surface, Absorber, and Reflector","authors":"Rui Yang, Zhangjie Luo, Jing Cheng Liang, Jun Yan Dai, Qiang Cheng, Tie Jun Cui","doi":"10.1002/admt.202400966","DOIUrl":"https://doi.org/10.1002/admt.202400966","url":null,"abstract":"Multi‐functional metasurfaces have shown great promise in tackling complex electromagnetic issues. Reconfigurable frequency‐selective Rasorbers (FSRs) have recently received growing attraction, but existing designs are constrained in their switchable modes, typically limited to FSR/Absorber or FSR/frequency‐selective surface (FSS). To address this limitation, a new metasurface that integrates four different functioning modes, including FSR, FSS, Absorber, and Reflector is proposed, which can be dynamically switched as demanded. The design is based on the theoretical network model analysis, and its intriguing performances are verified through simulations and experiments both in frequency and time domains. The results show that the FSR and Absorber modes exhibit wide low‐scattering bandwidths with narrow transmission windows that can be turned on or off. These two modes also eliminate the sputtering effect, making it suitable for stealth applications. In contrast, the Reflector mode is efficient in blocking microwaves across a broad spectrum, and a transmission window can be opened in the FSS mode. It is believed this multi‐functional metasurface can serve as a radome to protect against various challenges such as detection, interference, and high‐power invasion.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"244 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jinxue Yang, Xuhang Zhang, Zhenjie Zhao, Xue Wang, Zhenhu Liang, Yongri Liang, Ying Dan Liu
Low mechanical properties and easy detachment from the hydration layer at the wet interface of hydrogel limit its application as an adhesive‐flexible sensor. In this study, the composition and structure of mussel mucoprotein are replicated using sulfonyl betaine (SBMA) containing zwitterion and N‐hydroxyethyl acrylamide to be polymerized in deep eutectic solvents and integrated with a polydopamine network to create a bionic eutectic gel with exceptionally strong and wet adhesion. Water erosion is effectively inhibited by the extensive hydrogen bond and electrostatic interactions. These dynamic bonds also impart self‐healing properties to the gel, showing a self‐healing efficiency of 55.45% after 48 h healing at room temperature. The zwitterion in SBMA can preferentially react with water to form a hydrated shell to protect the hydrogen bonds and enhance the exceptional water resistance and adhesion of the gel. The peel strength of the gel on a wet substrate is up to 220.71 N m−1, and its tensile strength can reach 1.01 MPa. It also has good mass stability at both low and high temperatures. This eutectic gel has the potential to be used in flexible electronic devices and can detect human movement and bioelectrical impulses on wet skin with great sensitivity.
{"title":"Bioinspired Superstrong, Wet Adhesive Deep Eutectic Solvent‐Based Gels for Stain Sensing and ECG Monitoring","authors":"Jinxue Yang, Xuhang Zhang, Zhenjie Zhao, Xue Wang, Zhenhu Liang, Yongri Liang, Ying Dan Liu","doi":"10.1002/admt.202400878","DOIUrl":"https://doi.org/10.1002/admt.202400878","url":null,"abstract":"Low mechanical properties and easy detachment from the hydration layer at the wet interface of hydrogel limit its application as an adhesive‐flexible sensor. In this study, the composition and structure of mussel mucoprotein are replicated using sulfonyl betaine (SBMA) containing zwitterion and N‐hydroxyethyl acrylamide to be polymerized in deep eutectic solvents and integrated with a polydopamine network to create a bionic eutectic gel with exceptionally strong and wet adhesion. Water erosion is effectively inhibited by the extensive hydrogen bond and electrostatic interactions. These dynamic bonds also impart self‐healing properties to the gel, showing a self‐healing efficiency of 55.45% after 48 h healing at room temperature. The zwitterion in SBMA can preferentially react with water to form a hydrated shell to protect the hydrogen bonds and enhance the exceptional water resistance and adhesion of the gel. The peel strength of the gel on a wet substrate is up to 220.71 N m<jats:sup>−1</jats:sup>, and its tensile strength can reach 1.01 MPa. It also has good mass stability at both low and high temperatures. This eutectic gel has the potential to be used in flexible electronic devices and can detect human movement and bioelectrical impulses on wet skin with great sensitivity.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"164 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Laura Basiricò, Matteo Verdi, Andrea Ciavatti, Lorenzo Piergallini, Elisa Grassi, Federica Fioroni, Lorenzo Margotti, Nicolò Tosi, Valentina Cicero, Alessandro Montanari, Mauro Iori, Beatrice Fraboni
On-line in situ monitoring of radiation emitted by radiotracers during intravenous injection is of crucial importance for the safety of patients and personnel involved in nuclear medicine treatments and analysis. The aim of this work is to assess wearable perovskite ionizing radiation detectors for such application. With this purpose pixelated direct detector based on thin films of 2D layered perovskite PEA2PbBr4 are tested for the monitoring of gamma-rays emitted by 18F radiopharmaceutical under different experimental conditions. The wearable detector is here demonstrated being able to detect in real-time the gamma-rays emitted by annihilation of 18F radiotracer. Its reliability is assessed by 18F half-life measurement with a maximum accuracy deviation within 8%. The detector also successes in its validation for the foreseen application, demonstrating able to monitor in real-time the whole injection process and extravasation event.
{"title":"Wearable Perovskite Films for On-Line Monitoring of Radiotracers in Nuclear Medicine","authors":"Laura Basiricò, Matteo Verdi, Andrea Ciavatti, Lorenzo Piergallini, Elisa Grassi, Federica Fioroni, Lorenzo Margotti, Nicolò Tosi, Valentina Cicero, Alessandro Montanari, Mauro Iori, Beatrice Fraboni","doi":"10.1002/admt.202401111","DOIUrl":"https://doi.org/10.1002/admt.202401111","url":null,"abstract":"On-line in situ monitoring of radiation emitted by radiotracers during intravenous injection is of crucial importance for the safety of patients and personnel involved in nuclear medicine treatments and analysis. The aim of this work is to assess wearable perovskite ionizing radiation detectors for such application. With this purpose pixelated direct detector based on thin films of 2D layered perovskite PEA<sub>2</sub>PbBr<sub>4</sub> are tested for the monitoring of gamma-rays emitted by <sup>18</sup>F radiopharmaceutical under different experimental conditions. The wearable detector is here demonstrated being able to detect in real-time the gamma-rays emitted by annihilation of <sup>18</sup>F radiotracer. Its reliability is assessed by <sup>18</sup>F half-life measurement with a maximum accuracy deviation within 8%. The detector also successes in its validation for the foreseen application, demonstrating able to monitor in real-time the whole injection process and extravasation event.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Susan Jyakhwo, Valentina Bocharova, Nikita Serov, Andrei Dmitrenko, Vladimir V. Vinogradov
For years, researchers have searched for novel antibiotics to combat pathogenic infections. However, antibiotics lack specificity, harm beneficial microbes, and cause the emergence of antibiotic‐resistant strains. This study proposes an innovative approach to selectively eradicate pathogenic bacteria with a minimal effect on non‐pathogenic ones by discovering selectively antimicrobial nanoparticles. To achieve this, a comprehensive database is compiled to characterize nanoparticles and their antibacterial activity. Then, CatBoost regression models are trained for predicting minimal concentration (MC) and zone of inhibition (ZOI). The models achieve a ten‐fold cross‐validation (CV) R2 score of 0.82 and 0.84 with root mean square error (RMSE) of 0.46 and 2.41, respectively. Finally, a machine learning (ML) reinforced genetic algorithm (GA) is developed to identify the best‐performing selective antibacterial NPs. As a proof of concept, a selectively antibacterial nanoparticle, CuO, is identified for targeted eradication of a pathogenic bacteria, Staphylococcus aureus. A difference in minimal bactericidal concentration (MBC) of 392.85 µg mL−1 is achieved when compared to non‐pathogenic bacteria, Bacillus subtilis. These findings significantly contribute to the emerging research domain of selectively toxic (SelTox) nanoparticles and open the door for future exploration of synergetic interactions of SelTox nanoparticles with drugs.
{"title":"SelTox: Discovering the Capacity of Selectively Antimicrobial Nanoparticles for Targeted Eradication of Pathogenic Bacteria","authors":"Susan Jyakhwo, Valentina Bocharova, Nikita Serov, Andrei Dmitrenko, Vladimir V. Vinogradov","doi":"10.1002/admt.202400458","DOIUrl":"https://doi.org/10.1002/admt.202400458","url":null,"abstract":"For years, researchers have searched for novel antibiotics to combat pathogenic infections. However, antibiotics lack specificity, harm beneficial microbes, and cause the emergence of antibiotic‐resistant strains. This study proposes an innovative approach to selectively eradicate pathogenic bacteria with a minimal effect on non‐pathogenic ones by discovering selectively antimicrobial nanoparticles. To achieve this, a comprehensive database is compiled to characterize nanoparticles and their antibacterial activity. Then, CatBoost regression models are trained for predicting minimal concentration (MC) and zone of inhibition (ZOI). The models achieve a ten‐fold cross‐validation (CV) <jats:italic>R</jats:italic><jats:sup>2</jats:sup> score of 0.82 and 0.84 with root mean square error (RMSE) of 0.46 and 2.41, respectively. Finally, a machine learning (ML) reinforced genetic algorithm (GA) is developed to identify the best‐performing selective antibacterial NPs. As a proof of concept, a selectively antibacterial nanoparticle, CuO, is identified for targeted eradication of a pathogenic bacteria, <jats:italic>Staphylococcus aureus</jats:italic>. A difference in minimal bactericidal concentration (MBC) of 392.85 µg mL<jats:sup>−1</jats:sup> is achieved when compared to non‐pathogenic bacteria, <jats:italic>Bacillus subtilis</jats:italic>. These findings significantly contribute to the emerging research domain of selectively toxic (SelTox) nanoparticles and open the door for future exploration of synergetic interactions of SelTox nanoparticles with drugs.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Byungjin Kim, Sangmin Lee, Jae In Kim, Dong Hyeon Lee, Bon‐Jae Koo, Seong‐Geon Kim, Seyeong Ryu, Byungchul Kim, Min‐Ho Seo, Joonsoo Jeong
The seamless integration of wearable devices into user‐friendly and cost‐effective healthcare systems requires constituent materials with high degrees of flexibility, stretchability, and adhesive properties without compromising performance during dynamic body movements. This study proposes a liquid metal (LM)‐based multimodal skin‐mountable sensor platform using polydimethylsiloxane tuned for enhanced stretchability and stickiness (sPDMS) to fully leverage the LM's deformability. A highly accessible end‐to‐end fabrication approach is proposed for multifunctional LM sensors from modeling to fabrication and packaging, all achieved without the need for cleanroom facilities or special equipment. The LM‐based facile fabrication process tailored for sPDMS enables an adhesive‐free sensor patch with microfluidic channels of 100 µm width and stretchability up to 100%. A new analytical model provides enhanced estimation on the electromechanical behavior of LM channels compared with existing models. The funnel‐assisted LM filling and tape‐based channel sealing methods enable simple packaging of LM channels with robust external interconnection and direct skin‐interfaced monitoring. The feasibility of this healthcare platform is demonstrated through a multimodal sensor patch with electromechanical and electrophysiological functionalities. The proposed technology addresses current challenges in the cost and complexity of microfabrication, expanding the boundaries of wearable devices for highly accessible and personalized healthcare devices.
{"title":"Liquid Metal‐Based Multimodal Wearable Sensor Platform Enabled by Highly Accessible Microfabrication of PDMS with Tuned Mechanical Properties","authors":"Byungjin Kim, Sangmin Lee, Jae In Kim, Dong Hyeon Lee, Bon‐Jae Koo, Seong‐Geon Kim, Seyeong Ryu, Byungchul Kim, Min‐Ho Seo, Joonsoo Jeong","doi":"10.1002/admt.202400859","DOIUrl":"https://doi.org/10.1002/admt.202400859","url":null,"abstract":"The seamless integration of wearable devices into user‐friendly and cost‐effective healthcare systems requires constituent materials with high degrees of flexibility, stretchability, and adhesive properties without compromising performance during dynamic body movements. This study proposes a liquid metal (LM)‐based multimodal skin‐mountable sensor platform using polydimethylsiloxane tuned for enhanced stretchability and stickiness (sPDMS) to fully leverage the LM's deformability. A highly accessible end‐to‐end fabrication approach is proposed for multifunctional LM sensors from modeling to fabrication and packaging, all achieved without the need for cleanroom facilities or special equipment. The LM‐based facile fabrication process tailored for sPDMS enables an adhesive‐free sensor patch with microfluidic channels of 100 µm width and stretchability up to 100%. A new analytical model provides enhanced estimation on the electromechanical behavior of LM channels compared with existing models. The funnel‐assisted LM filling and tape‐based channel sealing methods enable simple packaging of LM channels with robust external interconnection and direct skin‐interfaced monitoring. The feasibility of this healthcare platform is demonstrated through a multimodal sensor patch with electromechanical and electrophysiological functionalities. The proposed technology addresses current challenges in the cost and complexity of microfabrication, expanding the boundaries of wearable devices for highly accessible and personalized healthcare devices.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cardiovascular diseases, which cause ≈10 million deaths annually, underscored the importance of effective blood pressure (BP) monitoring. Traditional devices, however, faced limitations that hindered the adoption of continuous monitoring technologies. Flexible triboelectric nanogenerator (TENG) sensors, known for their rapid response, high sensitivity, and cost‐effectiveness, presented a promising alternative. Enhancing their ability to capture weak biological signals can be achieved by optimizing the material's friction coefficient and expanding the effective contact area. In this work, a flexible microcolumn‐based TENG sensor with high sensitivity is developed by fabricating microcolumns of carbon nanotube/polydimethylsiloxane (CNT/PDMS) composites on porous polyethylene terephthalate (PET) membranes using template etching and integrating these with fluorinated ethylene propylene (FEP) film. With the enhancement of microcolumn structure, the sensor possessed high sensitivity and good response, enabling it to effectively and accurately detect subtle physiological changes such as radial pulses and fingertip pulsations, with pulse wave signals highly consistent with the interbeat intervals of electrocardiograms. Leveraging these capabilities, a non‐invasive dynamic BP monitoring system capable of continuous beat‐to‐beat BP monitoring is developed. This advancement enables easier and more effective health monitoring, empowering individuals to better manage their health and improve personalized medical care.
心血管疾病每年导致 1 千万人死亡，因此有效监测血压（BP）显得尤为重要。然而，传统设备的局限性阻碍了连续监测技术的应用。灵活的三电纳米发生器（TENG）传感器以反应迅速、灵敏度高和成本效益高而著称，是一种很有前途的替代方法。通过优化材料的摩擦系数和扩大有效接触面积，可以增强其捕捉微弱生物信号的能力。本研究利用模板蚀刻法在多孔聚对苯二甲酸乙二醇酯（PET）膜上制造碳纳米管/聚二甲基硅氧烷（CNT/PDMS）复合材料微柱，并将其与氟化乙烯丙烯（FEP）薄膜集成，从而开发出一种基于柔性微柱的高灵敏度 TENG 传感器。随着微柱结构的改进，传感器具有了高灵敏度和良好的响应性，能够有效、准确地检测微妙的生理变化，如径向脉动和指尖脉动，其脉搏波信号与心电图的搏动间期高度一致。利用这些功能，我们开发出了一种无创动态血压监测系统，能够进行连续的逐次心跳血压监测。这一进步使健康监测变得更简单、更有效，使个人能够更好地管理自己的健康，改善个性化医疗护理。
{"title":"Nanopores‐templated CNT/PDMS Microcolumn Substrate for the Fabrication of Wearable Triboelectric Nanogenerator Sensors to Monitor Human Pulse and Blood Pressure","authors":"Tao Zhang, Chuanjie Yao, Xingyuan Xu, Zhibo Liu, Zhengjie Liu, Tiancheng Sun, Shuang Huang, Xinshuo Huang, Shady Farah, Peng Shi, Hui‐jiuan Chen, Xi Xie","doi":"10.1002/admt.202400749","DOIUrl":"https://doi.org/10.1002/admt.202400749","url":null,"abstract":"Cardiovascular diseases, which cause ≈10 million deaths annually, underscored the importance of effective blood pressure (BP) monitoring. Traditional devices, however, faced limitations that hindered the adoption of continuous monitoring technologies. Flexible triboelectric nanogenerator (TENG) sensors, known for their rapid response, high sensitivity, and cost‐effectiveness, presented a promising alternative. Enhancing their ability to capture weak biological signals can be achieved by optimizing the material's friction coefficient and expanding the effective contact area. In this work, a flexible microcolumn‐based TENG sensor with high sensitivity is developed by fabricating microcolumns of carbon nanotube/polydimethylsiloxane (CNT/PDMS) composites on porous polyethylene terephthalate (PET) membranes using template etching and integrating these with fluorinated ethylene propylene (FEP) film. With the enhancement of microcolumn structure, the sensor possessed high sensitivity and good response, enabling it to effectively and accurately detect subtle physiological changes such as radial pulses and fingertip pulsations, with pulse wave signals highly consistent with the interbeat intervals of electrocardiograms. Leveraging these capabilities, a non‐invasive dynamic BP monitoring system capable of continuous beat‐to‐beat BP monitoring is developed. This advancement enables easier and more effective health monitoring, empowering individuals to better manage their health and improve personalized medical care.","PeriodicalId":7200,"journal":{"name":"Advanced Materials & Technologies","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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