材料科学最新文献_第4页

Sub-5 nm Silicon Nanopore Sensors: Scalable Fabrication via Self-Limiting Metal-Assisted Chemical Etching

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-01-30 DOI: 10.1021/acsami.4c19750

Fabio De Ferrari, Shyamprasad N. Raja, Anna Herland, Frank Niklaus, Göran Stemme

{"title":"Sub-5 nm Silicon Nanopore Sensors: Scalable Fabrication via Self-Limiting Metal-Assisted Chemical Etching","authors":"Fabio De Ferrari, Shyamprasad N. Raja, Anna Herland, Frank Niklaus, Göran Stemme","doi":"10.1021/acsami.4c19750","DOIUrl":"https://doi.org/10.1021/acsami.4c19750","url":null,"abstract":"Solid-state nanopores offer unique possibilities for biomolecule sensing; however, scalable production of sub-5 nm pores with precise diameter control remains a manufacturing challenge. In this work, we developed a scalable method to fabricate sub-5 nm nanopores in silicon (Si) nanomembranes through metal-assisted chemical etching (MACE) using gold nanoparticles. Notably, we present a previously unreported self-limiting effect that enables sub-5 nm nanopore formation from both 10 and 40 nm nanoparticles in the 12 nm thick monocrystalline device layer of a silicon-on-insulator substrate. This effect reveals distinctive etching dynamics in ultrathin Si nanomembranes, enabling precise control over nanopore dimensions. The resulting nanopore sensor, suspended over self-aligned spheroidal oxide undercuts with diameters of just a few hundred nanometers, exhibited low electrical noise and high stability due to encapsulation within dielectric layers. In DNA translocation experiments, our nanopore platform could distinguish folded and unfolded DNA conformations and maintained stable baseline conductance for up to 6 h, demonstrating both sensitivity and robustness. Our scalable nanopore fabrication method is compatible with wafer-level and batch processing and holds promise for advancing biomolecular sensing and analysis.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"39 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057220","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}

引用次数: 0

Targeted Conversion of Biomass into Primary Diamines via Carbon Shell-Confined Cobalt Nanoparticles

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-01-30 DOI: 10.1021/acsami.4c17669

Yan Chen, Siheng Yang, Jingyu Wang, Li Ji, Tianhua Cui, Chenghui Dai, Weichao Xue, Xueli Zheng, Haiyan Fu, Hua Chen, Shuang Li, Chong Cheng, Ruixiang Li, Jiaqi Xu

{"title":"Targeted Conversion of Biomass into Primary Diamines via Carbon Shell-Confined Cobalt Nanoparticles","authors":"Yan Chen, Siheng Yang, Jingyu Wang, Li Ji, Tianhua Cui, Chenghui Dai, Weichao Xue, Xueli Zheng, Haiyan Fu, Hua Chen, Shuang Li, Chong Cheng, Ruixiang Li, Jiaqi Xu","doi":"10.1021/acsami.4c17669","DOIUrl":"https://doi.org/10.1021/acsami.4c17669","url":null,"abstract":"Primary diamines are valuable yet challenging to synthesize due to issues such as product and intermediate condensation and catalyst poisoning. To address these problems, effective synthesis systems must be explored. Here, 2,5-bis(aminomethyl)furan (BAMF), a biomass-derived primary diamine, is chosen as the model for constructing such a system. A series of carbon-shell confined Co nanoparticles (Co@CNT-x) are fabricated to synthesize BAMF. The Co@CNT-700 catalyst, with ca. 4 layers of carbon shells, achieves an outstanding 96% isolated yield of BAMF through the reductive amination of 2,5-diformylfuran dioxime. In this system, an excess NH3 atmosphere is necessary to prevent condensation reactions by competitive reactions, while the carbon shells protect the catalyst from NH3 and amine poisoning. Control experiments indicate that 2,5-diformylfuran dioxime primarily follows a H2-assisted dehydration pathway to form key imine intermediates, while side products such as amides and nitriles can also eventually be converted into BAMF by Co@CNT-700, leading to its excellent selectivity. Notably, by employing a sequential three-step strategy, ca. 87% BAMF can be achieved by directly using biomass as the raw material. To evaluate the tolerance of this system, 9 other important aromatic, cycloalkyl, and linear alkyl primary diamines, such as 1,4-cyclohexanediamine, are obtained in high yields of 87−99%.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"5 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057251","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}

引用次数: 0

Efficient catalyst for alkaline water

IF 83.5 1区材料科学

Nature Reviews Materials Pub Date : 2025-01-30 DOI: 10.1038/s41578-025-00776-4

Charlotte Allard

引用次数: 0

A Hydrogel Engineered with Semiconductive MnPSe3 Nanosheets as an Integrative Sonosensitizer/Fenton‐Like Catalyst/Nutrient for Melanoma Postoperative Care

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-01-30 DOI: 10.1002/adfm.202417871

Xinxin Zhang, Jimin Huang, Jinzhou Huang, Zhe Shi, Huicong Niu, Yi Zheng, Xiao Wang, Chengtie Wu, Jiajie Chen, Ping Liu, Yufang Zhu

{"title":"A Hydrogel Engineered with Semiconductive MnPSe3 Nanosheets as an Integrative Sonosensitizer/Fenton‐Like Catalyst/Nutrient for Melanoma Postoperative Care","authors":"Xinxin Zhang, Jimin Huang, Jinzhou Huang, Zhe Shi, Huicong Niu, Yi Zheng, Xiao Wang, Chengtie Wu, Jiajie Chen, Ping Liu, Yufang Zhu","doi":"10.1002/adfm.202417871","DOIUrl":"https://doi.org/10.1002/adfm.202417871","url":null,"abstract":"The simultaneous inhibition of tumor recurrence and promotion of wound healing are critical for patients undergoing melanoma surgery. However, the development of an effective yet straightforward platform that meets the comprehensive therapeutic requirements of clinical melanoma postoperative care still remains a significant challenge. Herein, a 2D semiconductive MnPSe3 nanosheets (MPS NSs)‐engineered sodium alginate (SA) hydrogel dressing (SA‐MPS) is developed. The MPS NSs, a member of the ternary transition metal phosphorous chalcogenides (TMPCs), are successfully prepared through an ultrasonic‐assisted liquid phase exfoliation approach from bulk MnPSe3. These nanosheets exhibit the integrative functions of sonosensitizers, Fenton‐like catalysts, glutathione (GSH) scavengers, and phosphorus (P)/selenium (Se)‐containing nutrients. In vitro and in vivo evaluations demonstrate that the SA‐MPS hydrogel dressing possesses excellent biocompatibility and is effective for combined sonodynamic/chemodynamic therapy (SDT/CDT) of tumors, with amplified reactive oxygen species (ROS) production. Additionally, it promotes skin regeneration in postoperative wounds by supplying bioactive P/Se elements. Hence, such a multifunctional SA‐MPS hydrogel dressing without complex integration offers great potential for suppressing postoperative melanoma recurrence while facilitating wound healing, making it a promising candidate for melanoma postoperative care.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"78 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143056412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deformation Mechanisms of Nanoporous Oxide Glasses: Indentations and Finite Element Simulation

IF 9.4 1区材料科学

Acta Materialia Pub Date : 2025-01-30 DOI: 10.1016/j.actamat.2025.120779

Dong Wu, Zixiao Xue, Zhicheng Ni, Yinfeng Li, Zhuocheng Chen, Xiaomeng Zhu, Yinsheng Xu, Ping Lu, Long Zhang, Jin He

{"title":"Deformation Mechanisms of Nanoporous Oxide Glasses: Indentations and Finite Element Simulation","authors":"Dong Wu, Zixiao Xue, Zhicheng Ni, Yinfeng Li, Zhuocheng Chen, Xiaomeng Zhu, Yinsheng Xu, Ping Lu, Long Zhang, Jin He","doi":"10.1016/j.actamat.2025.120779","DOIUrl":"https://doi.org/10.1016/j.actamat.2025.120779","url":null,"abstract":"Nanoporous oxide glasses have a wide array of applications including medicine, sensor and optics, owing to their high thermal and chemical stability. However, the correlations between their topological structure, glass system and mechanical properties are still poorly understood. In this paper, we bridged this structure-composition-property gap by utilizing nanoindentation and finite element simulation on two series of sol-gel derived nanoporous glasses: phosphate (AP) and silicate (SA) glasses. The critical length of cracks 2ac was found much smaller in the AP glasses (7.3 nm) than in the SA glasses (20.3 nm). As a result, the AP glasses with larger pores (6∼10 nm) were more easily crushed than the SA glasses with finer pores (1∼6 nm). Similar small physical activation volumes Ω (2∼3 nm3) have been measured in fully dense SiO2 glass and the porous glasses with lower porosity (< 30%) or smaller pore size (< 2nm), indicating the catastrophic cracks initiate at the inhomogeneities of glass network, regardless of its porous structure or not. The linear dependence of Ω on pore size or porosity probably arise from the less constrained porous structure, and the shearing crack prefer to nucleate on the pore wall under compression. The deformation mechanisms of nanoporous glasses have been summarized and rationalize the evolution of brittle fracture behaviors in the SA and AP glasses. The hardness H and elastic modulus E of porous glasses were found still obey the classical Gibson & Ashby's model, which is valuable to develop novel porous glasses for future industrial applications.","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"14 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143056694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intense, self-induced sustainable microwave plasma using carbon nanotubes made from CO2

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-01-30 DOI: 10.1039/d4nr04097j

Gad Licht, Kyle Hofstetter, Stuart Licht

引用次数: 0

Solvation entropy engineering of thermogalvanic electrolytes for efficient electrochemical refrigeration

IF 39.8 1区材料科学

Joule Pub Date : 2025-01-30 DOI: 10.1016/j.joule.2025.101822

Yilin Zeng, Boyang Yu, Ming Chen, Jinkai Zhang, Pei Liu, Jinhua Guo, Jun Wang, Guang Feng, Jun Zhou, Jiangjiang Duan

{"title":"Solvation entropy engineering of thermogalvanic electrolytes for efficient electrochemical refrigeration","authors":"Yilin Zeng, Boyang Yu, Ming Chen, Jinkai Zhang, Pei Liu, Jinhua Guo, Jun Wang, Guang Feng, Jun Zhou, Jiangjiang Duan","doi":"10.1016/j.joule.2025.101822","DOIUrl":"https://doi.org/10.1016/j.joule.2025.101822","url":null,"abstract":"Emerging thermogalvanic systems can not only convert heat into electricity but also enable electrochemical refrigeration. However, their fundamental electrolytes meet challenges toward high cooling performance due to the absence of rational design principles. Developing thermogalvanic electrolytes with high-temperature coefficients and low heat capacity is the key to efficient electrochemical refrigeration. Here, we report an iron-based electrolyte design strategy by synergistic binary solvent and anion engineering, which rearranges the solvation shell of Fe2+/3+ ions to achieve a high-temperature coefficient of 3.73 mV K−1 with decreased heat capacity. The comprehensive analyses reveal that the weak Fe2+/3+-ClO4− interactions, accompanied by selective association between Fe2+ and nitrile solvents, fully enlarge the entropy change available for electrochemical refrigeration. As a result, the optimized electrolyte could potentially reach ∼70% improvement of cooling power, and a direct cooling of electrolyte ∼1.42 K was demonstrated with only 0.11 W cm−2 input, showing promise for practical electrochemical refrigeration.","PeriodicalId":343,"journal":{"name":"Joule","volume":"49 1","pages":""},"PeriodicalIF":39.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Machine Learning to Design a FeMOF Bidirectional Regulator for Electrochemiluminescence Sensing of Tau Protein

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-01-30 DOI: 10.1021/acsami.4c18204

Wei Yuan, Qin Tao, Xuyuan Chen, Tianwen Liu, Jin Wang, Xiaoying Wang

{"title":"Using Machine Learning to Design a FeMOF Bidirectional Regulator for Electrochemiluminescence Sensing of Tau Protein","authors":"Wei Yuan, Qin Tao, Xuyuan Chen, Tianwen Liu, Jin Wang, Xiaoying Wang","doi":"10.1021/acsami.4c18204","DOIUrl":"https://doi.org/10.1021/acsami.4c18204","url":null,"abstract":"The single-luminophore-based ratiometric electrochemiluminescence (ECL) sensor coupling bidirectional regulator has become a research hotspot in the detection field because of its simplicity and accuracy. However, the limited bidirectional regulator hinders its further development. In this study, by leveraging the robust predictive capabilities of machine learning, we prepared an Fe-based metal–organic framework (FeMOF) as a bidirectional regulator for modulating the dual-emission ECL signals of a single luminophore for the first time. The proof of concept was demonstrated by applying FeMOF to the classical luminophore Ru(bpy)32+, and the results showed its ability to enhance the cathode ECL signal (Ecathode) and inhibit the anode ECL signal (Eanode). As an example, a ratiometric ECL sensor for Tau protein (Tau) detection utilizing the FeMOF/Ru(bpy)32+ system was developed. The incorporation of a bidirectional regulator in the ECL system effectively mitigated erratic fluctuations or minor discrepancies between the two signals and showed a stronger correlation and stability of Ecathode/Eanode than before regulation. As a result, the ECL sensor showed good analytical performance with a detection limit as low as 3.38 fg mL–1 (S/N = 3). Moreover, it was not only comparable in test results to the commercially available ELISA kit but also could well distinguish between normal and Alzheimer’s disease (AD) patients (80% specificity and 90% sensitivity). Thus, the proposed strategy is promising to be extended to other ECL luminophores or MOFs, providing a new path for ratiometric ECL sensors.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"17 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057250","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}

引用次数: 0

Logical Analysis of Multiple miRNAs with Isothermal Molecular Classifiers Based on LATE-RCA

IF 10.8 1区材料科学

Nano Letters Pub Date : 2025-01-30 DOI: 10.1021/acs.nanolett.5c00089

Tong Feng, Li Zhang, Ding Wang, Chen Zuo, Yaoyi Zhang, Di Wu, Weitao Wang, Hongyan Yu, Dan Bai, Huaixin Zhao, Yongcan Guo, Guoming Xie

{"title":"Logical Analysis of Multiple miRNAs with Isothermal Molecular Classifiers Based on LATE-RCA","authors":"Tong Feng, Li Zhang, Ding Wang, Chen Zuo, Yaoyi Zhang, Di Wu, Weitao Wang, Hongyan Yu, Dan Bai, Huaixin Zhao, Yongcan Guo, Guoming Xie","doi":"10.1021/acs.nanolett.5c00089","DOIUrl":"https://doi.org/10.1021/acs.nanolett.5c00089","url":null,"abstract":"Logical analysis of multiple-miRNA expression information and immediate output of diagnostic results facilitates early cancer detection. In this work, we constructed an isothermal molecular classifier capable of performing computations on multiple miRNAs and directly providing diagnosis results. First, we developed linear-after-the-exponential rolling circle amplification (LATE-RCA), a nearly linear isothermal amplification that does not destroy the original quantitative information about miRNAs. By designing different numbers of weighted coding sequences on the circular template, we naturally implemented multiplication in the LATE-RCA process. Summation, subtraction, and reporting were then carried out by strand displacement reactions. The entire workflow of the classifier was validated using synthetic gastric cancer and healthy miRNA samples with an accuracy of 100%, demonstrating its robustness and accuracy. Compared with existing molecular classifiers, our approach performs under isothermal conditions, streamlines computational procedures, and simplifies probe design. We believe that this isothermal molecular classifier has promising prospects in personalized precision medicine.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"121 1","pages":""},"PeriodicalIF":10.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143057282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic Hybrid‐Ligand Passivation of Perovskite Quantum Dots: Suppressing Reduced‐Dimensionality and Enhancing Optoelectronic Performance

IF 29.4 1区材料科学

Advanced Materials Pub Date : 2025-01-30 DOI: 10.1002/adma.202410128

Sanghun Han, Woo Hyeon Jeong, Gayoung Seo, Seongmin Choi, Dong Gyu Lee, Weon‐Sik Chae, Hyungju Ahn, Tae Kyung Lee, Hyosung Choi, Jongmin Choi, Bo Ram Lee, Younghoon Kim

{"title":"Synergistic Hybrid‐Ligand Passivation of Perovskite Quantum Dots: Suppressing Reduced‐Dimensionality and Enhancing Optoelectronic Performance","authors":"Sanghun Han, Woo Hyeon Jeong, Gayoung Seo, Seongmin Choi, Dong Gyu Lee, Weon‐Sik Chae, Hyungju Ahn, Tae Kyung Lee, Hyosung Choi, Jongmin Choi, Bo Ram Lee, Younghoon Kim","doi":"10.1002/adma.202410128","DOIUrl":"https://doi.org/10.1002/adma.202410128","url":null,"abstract":"In terms of surface passivation for realizing efficient CsPbI3‐perovskite quantum dot (CsPbI3‐PQD)‐based optoelectronic devices, phenethylammonium iodide (PEAI) is widely used during the ligand exchange. However, the PEA cation, due to its large ionic radius incompatible with the 3D perovskite framework, acts as an organic spacer within polycrystalline perovskites, leading to the formation of reduced dimensional perovskites (RDPs). Despite sharing the identical 3D perovskite framework, the influence of PEAI on the structure of CsPbI3‐PQDs remains unexplored. Here, it is revealed that PEAI can induce the formation of high‐n RDPs (n > 2) within the CsPbI3‐PQD solids, but these high‐n RDPs undergo an undesirable phase transition to low‐n RDPs, leading to the structural and optical degradation of CsPbI3‐PQDs. To address the PEAI‐induced issue, we employ triphenylphosphine oxide (TPPO) as an ancillary ligand during the ligand exchange process. The incorporation of TPPO prevents H2O penetration and regulates the rapid diffusion of PEAI, suppressing the formation of low‐n RDPs. Moreover, TPPO can passivate the uncoordinated Pb2+ sites, reducing the nonradiative recombination. This hybrid‐ligand exchange strategy using both PEAI and TPPO enables realizing efficient and stable CsPbI3‐PQD‐based light‐emitting diode (external quantum efficiency of 21.8%) and solar cell (power conversion efficiency of 15.3%) devices.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"32 1","pages":""},"PeriodicalIF":29.4,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143056418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0