Applied Materials Today最新文献

{"title":"Electrospinning and melt electrowriting of a tunable triblock-copolymer composed of poly(ε-caprolactone) and poly(L-lactic acid) for biomedical applications","authors":"Jef Brebels, Hannah Agten, Mario Smet, Veerle Bloemen, Arn Mignon","doi":"10.1016/j.apmt.2024.102422","DOIUrl":"https://doi.org/10.1016/j.apmt.2024.102422","url":null,"abstract":"Both electrospinning (ES) and melt electrowriting (MEW) garner emerging interest within the field of biomedical applications. Poly(ε-caprolactone) (PCL) is still the gold standard for both techniques, demonstrating excellent processability due to its solubility, melt flow properties and thermal stability. However, when evaluating biomaterials for soft tissue applications, PCL exhibits limitations such as low elasticity and extended biodegradation times. Additionally, the limited availability of materials that are processable by MEW constrains their broader clinical translation. To address this limitation, a tunable triblock-copolymer of PCL and poly(L-lactic acid) (PLLA) is synthesized and processed using ES and MEW. This synthesis employs a PCL-diol backbone with a molar mass of 30 000 g mol, to which various lengths of PLLA end-blocks are added on both termini (PLLA-b-PCL-b-PLLA). The successful incorporation of these tunable end-blocks is verified through spectroscopic analysis. The ES of PLLA-b-PCL-b-PLLA reveals excellent fiber formation, with fiber diameters ranging between 2–4 µm as the PLLA molar mass increases. The tunable nature of the polymer allows for MEW at 90 °C, producing fibers with diameters ranging between 40–50 µm. Additionally, the materials exhibit adjustable mechanical properties and biodegradation rates by varying the PLLA segment lengths. Finally, cell testing using MC3T3-E1 cells demonstrates the polymer's excellent biocompatibility.","PeriodicalId":8066,"journal":{"name":"Applied Materials Today","volume":"31 1","pages":""},"PeriodicalIF":8.3,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Click metamaterials: Fast acquisition of thermal conductivity and functionality diversities","authors":"Chengmeng Wang, Peng Jin, Fubao Yang, Pengfei Zhuang, Liujun Xu, Jiping Huang","doi":"10.1016/j.apmt.2024.102431","DOIUrl":"https://doi.org/10.1016/j.apmt.2024.102431","url":null,"abstract":"In material science, the development of metamaterials is crucial for advancing various technological applications. However, most metamaterial designs are still case by case due to lacking a fundamental mechanism for achieving reconfigurable thermal conductivities, largely hindering design flexibility and functional diversity. Inspired by the principles of click chemistry, known for its modular and efficient approach to creating molecular diversity, here we propose a universal concept of click metamaterials for fast realizing various thermal conductivities and functionalities. Tunable hollow-filled unit cells are constructed as the modified building blocks to change the thermal conductivity locally. Different configurations of unit cells with variable fill fractions can generate convertible thermal conductivities from isotropy to anisotropy, allowing click metamaterials to exhibit environment-free and reconfigurable thermal functionalities. The straightforward structures enable full-parameter regulation and simplify engineering preparation, making click metamaterials a promising candidate for practical use in other diffusion and wave systems.","PeriodicalId":8066,"journal":{"name":"Applied Materials Today","volume":"17 1","pages":""},"PeriodicalIF":8.3,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Colorimetric polymer nanofilm-based time-temperature indicators for recording irreversible changes of temperatures in cold chain","authors":"Md Nayeem Hasan Kashem, Kun Miao, Fariha Afnan, Syed Mushfique, Vijay Sher Singh, Wenwen Wang, Qingye Liu, Wei Li","doi":"10.1016/j.apmt.2024.102432","DOIUrl":"https://doi.org/10.1016/j.apmt.2024.102432","url":null,"abstract":"Monitoring and recording subzero temperatures and humidity are essential activities for pharmaceutical, food-beverage, and cold storage industries, as product quality can be hampered during storage and transportation due to temperature disruptions. Traditional electronic subzero time-temperature indicators (TTIs) can be energy-inefficient, fragile, non-recyclable, and susceptible to data breaches and cyber-attacks. Hydrophilic colorimetric polymer nanofilms have been developed as colorimetric temperature and relative humidity (RH) sensors, however, the reversible color-changing behavior of these films significantly limited their application as TTIs, as cannot record temperature changes in the past. Herein, the first colorimetric polymer nanofilm-based TTI for recording an irreversible change of temperatures is reported. This device has shown quick color response in temperature ranges from 23 °C to -30 °C in fewer than 50 s. Remarkably, when the device experiences temperature disruption above a certain threshold time (t), it shows irreversible color-changing behavior in response to the temperature change from subzero (-30 °C and -15 °C) to room temperature or above. It was demonstrated that t, from minutes to days, of the TTI device can be precisely tuned by adjusting moisture absorber type and weight, interior RH, and storage temperature. Several field tests have demonstrated good versatility and applicability of the device.","PeriodicalId":8066,"journal":{"name":"Applied Materials Today","volume":"17 1","pages":""},"PeriodicalIF":8.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spinodally reinforced W-Cr fusion armour","authors":"Alexander J Knowles, Tat Yiu Spencer Cheung, Kan Ma, Russel Dodds, Samuel A Humphry-Baker, Felipe F. Morgado, Shyam S Katnagallu, Eduardo Saiz, Baptiste Gault, Christopher D Hardie, David Dye","doi":"10.1016/j.apmt.2024.102430","DOIUrl":"https://doi.org/10.1016/j.apmt.2024.102430","url":null,"abstract":"Here, we introduce a discontinuous spinodal reinforcement strategy in the novel candidate plasma facing material (PFM) of tungsten-chromium alloys. Thermal ageing of a W-34wt%Cr alloy at 1250 °C causes nano-scale lamellae 200–600 nm to form heterogeneously from grain boundaries, which progressively grow into the matrix fully, then coarsen to 1–2 µm after 100 h. The dual-phase microstructure confers exceptional high temperature compressive strength, maintaining 900 MPa at 1000 °C - double that of polycrystalline tungsten. Further, the chromium alloying promotes a dense oxide scale that confers a 2 orders of magnitude improvement in resistance against oxidation at 1000 °C compared to W, which is an important consideration for PFMs under loss of vacuum accident conditions. The dual-phase W-Cr alloy concept's combination of high strength and oxidation resistance represents a new scalable alternative to tungsten, with wide scope for further alloying and process optimisation.","PeriodicalId":8066,"journal":{"name":"Applied Materials Today","volume":"213 1","pages":""},"PeriodicalIF":8.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual cytokine release from microsphere-containing decellularized extracellular matrix immune regulation promotes bone repair and regeneration","authors":"Zhaohui Dang, Weihua Huang, Xiayu Cai, Jiandong Ye, Weikang Xu","doi":"10.1016/j.apmt.2024.102433","DOIUrl":"https://doi.org/10.1016/j.apmt.2024.102433","url":null,"abstract":"Most bone filler materials currently achieve bone regeneration by mimicking the natural bone extracellular matrix. However, it is difficult for these materials to replicate the structural functions and bioactivities, including immunomodulation, of natural bone perfectly to reduce inflammation and promote bone regeneration synergistically. Repairing bone defects with scaffolds using a decellularised extracellular matrix (dECM) as a matrix material is an important clinical application and research direction. Here, we processed bovine cancellous bone via an optimised combination of decellularisation methods and preferred dECM, which has the shortest processing time and lowest immunogenicity. Hexagonal mesoporous silica (HMS)/poly(lactic-co-glycolic acid) (PLGA) microspheres loaded with bone morphogenetic protein-2 (BMP-2) were prepared using the complex emulsion method. The HMS/PLGA microspheres had longer cytokine release periods than did the separate HMS and PLGA microspheres. Composite BMP-2/HMS/PLGA microspheres were used to prepare dual-loaded cytokine scaffolds with bone immunomodulatory capacity, which were prepared from composite BMP-2/HMS/PLGA microspheres to increase the osteogenic activity of the dECM and to adsorb interleukin-4 (IL-4) on the surface of the scaffolds. The results showed that the dECM had good cytocompatibility and mechanical strength, and the composite microspheres and IL-4 further endowed the dECM with an ordered spatiotemporally controlled release function, which could release BMP-2 for more than 4 months in the long term and release IL-4 for approximately 10 days in the short term. The composite scaffold not only effectively promoted the proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) but also immunomodulated the M1 to M2 polarisation of macrophages (MPs) and mediated the M2 polarisation of MPs, which in turn promoted the osteogenic differentiation of BMSCs, creating a favourable immune microenvironment for bone regeneration. In vivo, the dual drug-loaded scaffolds also exhibited good biocompatibility and significantly superior immunomodulatory bone-enhancing properties compared with those of the other groups. In summary, the combination of dECM scaffolds with cytokine-carrying microspheres and immunomodulatory factors can promote the orderly spatiotemporal release of cytokines, which significantly enhances the bone regeneration and repair effects of dECM scaffolds and is a promising bone filler material for clinical application.","PeriodicalId":8066,"journal":{"name":"Applied Materials Today","volume":"41 1","pages":""},"PeriodicalIF":8.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phase transition and internal friction behaviors in Mn-doped Co-V-Ga shape memory alloys","authors":"Cong Liu, Hongwei Liu, Zongbin Li, Huaqiu Du, Yueping Wang, Bo Yang, Haile Yan, Liang Zuo","doi":"10.1016/j.apmt.2024.102426","DOIUrl":"https://doi.org/10.1016/j.apmt.2024.102426","url":null,"abstract":"Shape memory alloys with a high abundance of mobile interfaces exhibit remarkable internal friction () behaviors, which can be utilized for the reduction of noise and vibration. In this study, we systematically investigate the martensitic transformation and internal friction behaviors in the Mn-doped CoVGaMn ( = 0 - 10) polycrystalline alloys. Our findings indicate that using Mn to replace V results in decreased transformation temperatures but increased thermal hysteresis. The addition of Mn enhances magnetic exchange interaction, leading to a gradual enhancement in magnetization difference across martensitic transformation, thereby compromising the transformation entropy change and arresting the martensitic transformation. At a frequency of 0.4 Hz, the intensity of transformation peak is enhanced from 0.124 to 0.178 with increasing the Mn content from 0 to 4.5 %, as a result of deteriorated geometrical compatibility between austenite and martensite due to the addition of Mn. Furthermore, hydrogenation treatments substantially improve both the peak intensity and frequency dependence of peak position for the relaxation-type , demonstrating the great contribution from hydrogen-twin boundary interaction.","PeriodicalId":8066,"journal":{"name":"Applied Materials Today","volume":"76 1","pages":""},"PeriodicalIF":8.3,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Emerging light-responsive functional surfaces for droplet manipulation","authors":"Shuangmin Fu, Yongshen Zhou, Jing Zhao, Ke Pei, Zhiguang Guo","doi":"10.1016/j.apmt.2024.102429","DOIUrl":"https://doi.org/10.1016/j.apmt.2024.102429","url":null,"abstract":"Precise manipulation of the droplet is essential in both fundamental research and practical applications, from cargo pick-up to biological diagnostics, thus functional surfaces with specific wettability that are sensitive to external stimuli have aroused broad interests in droplet manipulation on demand. Light, an intriguing stimulus format, provides an ideal platform for remote and contactless droplet manipulation with outstanding temporal and spatial accuracy, which is typically induced by photochemistry, photomechanics, light-induced Marangoni effects and light-induced electric fields. In this Review, emerging progress of light-responsive functional surfaces for droplet manipulation from perspectives of fundamental principles, categories and structural characteristics of the functional surfaces, as well as corresponding prototypical preparation techniques are revisited. In addition, the advanced inspiring applications of light-responsive functional surface in droplet motion are summarized, including manipulation of soft matter and information, harvesting of soft matter and energy, materials manufacturing and multiphase separation, and chemical analysis and bio-related applications. Finally, the frontier challenges and future outlook associated with the light-responsive functional surface for droplet manipulation are prospected, which is critical for the further development of this cross-fertilized research field.","PeriodicalId":8066,"journal":{"name":"Applied Materials Today","volume":"43 1","pages":""},"PeriodicalIF":8.3,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface modification of LiFePO4 cathode enabled by highly Li+ mobility wrapping layer towards high energy and power density","authors":"Jean Pierre Mwizerwa, Chao Zhi, Haotian Wu, Lijun Xu, Changyong Liu, Wenfei Lu, Dong Luo, Jun Shen","doi":"10.1016/j.apmt.2024.102423","DOIUrl":"https://doi.org/10.1016/j.apmt.2024.102423","url":null,"abstract":"Surface-modified cathode materials have been developed to achieve high-performance lithium secondary batteries with higher capacity, rate capability, and longer cycle performance than bulk active materials. In this study, a new surface-modified active material was explored through a low-temperature -solution wrapping method (LiFePO@LiSiO composite). In addition, high Li-ion and electronic conductivity materials with amorphous nanostructures, in which the bulk LiFePO nanoparticles were covered with a LiSiO layer, were demonstrated. In lithium-ion batteries, the LiFePO@LiSiO composite demonstrated enhanced charge transfer kinetics, which lowered the interfacial resistance between electrode and electrolyte and resulted in enhanced electrochemical performance when compared to that of bulk LiFePO. Furthermore, LiSiO is introduced as a surface stabilizer and effective Li-ion conductor to avoid side reactions and prevent the dissolution of active materials into the electrolyte. The designed cathode delivers a high specific discharge capacity of 171.8 mAh g at 0.1 C with 99.76 % capacity retention after 150 cycles and a high capacity of 121.2 mAh g at 10 C. Moreover, Li-ion full batteries employing LiFePO@LiSiO and graphite displayed a high specific energy density of 416.078 Wh kg at a power density of 69.34 W kg at 5 C. In summary, this paper reports a new strategy based on low-temperature solution phase wrapping materials for developing active materials for high energy-power density energy storage devices.","PeriodicalId":8066,"journal":{"name":"Applied Materials Today","volume":"1 1","pages":""},"PeriodicalIF":8.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microwave-assisted in-situ synthesis of low-dimensional perovskites within metal-organic frameworks for optoelectronic applications","authors":"Xiangyu Xu, Jie Zhou, Zhongren Shi, Yan Kuai, Zhijia Hu, Zhigang Cao, Siqi Li","doi":"10.1016/j.apmt.2024.102418","DOIUrl":"https://doi.org/10.1016/j.apmt.2024.102418","url":null,"abstract":"Halide perovskites are renowned for their remarkable optoelectronic properties, yet their application is hindered by stability challenges. Metal-organic frameworks (MOFs) have emerged as promising matrices for enhancing perovskite durability. In this study, we achieved the in-situ synthesis of a series of perovskites within the MOF-5 matrix, spanning three-dimensional, quasi two-dimensional, and two-dimensional structures, via microwave-assisted reaction techniques. This microwave synthesis method has proven to be a rapid and efficient approach for the high-yield production of perovskite materials. These MOF-5⊃perovskites exhibited superior optical properties, positioning them as promising candidates for various optoelectronic applications, including white light-emitting diodes and optical wireless communication (OWC) systems. Significantly, our perovskites demonstrated high and consistent communication rates, making them suitable for both space and underwater OWC deployments. Overall, our study underscores the potential of microwave-assisted synthesis in advancing high-performance perovskite materials, offering valuable insights for the development of future optoelectronic devices.","PeriodicalId":8066,"journal":{"name":"Applied Materials Today","volume":"19 1","pages":""},"PeriodicalIF":8.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Full fluorescence paper of Eu3+– induced diblock copolymer nanoaggregates for negative multiple mode photon information storage and encryption","authors":"Wei Chen, Qinglin Tang, Rui Xu, Jin Liu, Yao Wang, Wei Wang, Yanxin Wang, Christopher D. Snow, Jun Li, Matt J. Kipper, Laurence A. Belfiore, Jianguo Tang","doi":"10.1016/j.apmt.2024.102416","DOIUrl":"https://doi.org/10.1016/j.apmt.2024.102416","url":null,"abstract":"The protection of personal information is becoming increasingly difficult in the age of rapid growth in communication and information technologies. However, current relating techniques, such as anti-counterfeiting, depend on the simple luminescence image and UV–recognition. Thus, advanced methods for information encryption and decryption are urgently required. Herein, we report a full fluorescence paper (FFP) containing stable, fluorescent Eu–induced diblock nanoaggregates (EIPAs), and design a negative photon information multiple encryption (NME) method. Multiple quenching mechanisms can be employed to encrypt and decrypt information, using different quenching molecules. These include an internal filtering effect, a dynamic quenching effect, and a combined static and dynamic quenching effect. The recovery of different information under different light sources enables encryption and decryption cycles.","PeriodicalId":8066,"journal":{"name":"Applied Materials Today","volume":"8 1","pages":""},"PeriodicalIF":8.3,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142178264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}