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A self-assembling nanoplatform for pyroptosis and ferroptosis enhanced cancer photoimmunotherapy

Light(science & Applications) 2025年第1期14卷 153-166页

作者： Zhichao Wang Yuqi Tang Quan Li Institute of Advanced Materials and School of Chemistry and Chemical Engineering Southeast UniversityNanjing211189China Materials Science Graduate Program Kent State UniversityKentOH44242USA

The microenvironment of immunosuppression and low immunogenicity of tumor cells has led to unsatisfactory therapeutic effects of the currently developed *** cell death,such as pyroptosis and ferroptosis,can efficiently boost antitumor ***,the exploration of nanoplatform for dual function inducers and combined immune activators that simultaneously trigger pyroptosis and ferroptosis remains ***,a multifunctional pH-responsive theranostic nanoplatform(M@P)is designed and constructed by self-assembly of aggregation-induced emission photosensitizer MTCN-3 and immunoadjuvant Poly(l:C),which are further encapsulated in amphiphilic *** nanoplatform is found to have the characteristics of cancer cell targeting,pH response,near-infrared fluorescence imaging,and lysosome ***,after targeting lysosomes,M@P can cause lysosome dysfunction through the generation of reactive oxygen species and heat under light irradiation,triggering pyroptosis and ferroptosis of tumor cells,achieving immunogenic cell death,and further enhancing immunotherapy through the combined effect with the immunoadjuvant Poly(I:C).The anti-tumor immunotherapy effect of M@P has been further demonstrated in in vivo antitumor experiment of 4T1 tumor-bearing mouse model with poor *** research would provide an impetus as well as a novel strategy for dual function inducers and combined immune activators enhanced photoimmunotherapy.

关键词： immunotherapy cancer aggregation

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FPGA implementation of low cost and low power chaotic encryption scheme based on a discrete-space chaotic map

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Multimedia Tools and Applications 2025年 1-22页

作者： Moreira Bezerra, João Inácio Machado, Gustavo Iankowski Soares, Rafael Valduga de Almeida Camargo, Vinícius Molter, Alexandre Post Graduate Program in Computer Science Universidade Federal de Pelotas Rio Grande do Sul Pelotas96010610 Brazil Graduate Program in Computer Engineering Universidade Federal de Pelotas Rio Grande do Sul Pelotas96010610 Brazil Post Graduate Program in Mathematical Modeling Universidade Federal de Pelotas Rio Grande do Sul Capão do Leão96160000 Brazil

The exponential growth of the number of devices connected to the Internet and the use of IoT applications increases the amount of data exchange over public channels in low-cost and low-power embedded systems. Images are the most widely shared files, and standard symmetric algorithms such as the Advanced Encryption Standard (AES) are optimized for text but not image encryption. Consequently, new approaches like chaotic encryption have attracted researchers’ interest. Chaotic encryption schemes have been analyzed mostly from a software standpoint, but recent advancements in the field, through the use of discrete chaotic maps, enabled the development of simpler hardware implementations of ciphers with promising reductions in power and cost and increased performance. This work presents the Field-programmable Gate Array (FPGA) implementation of a simultaneous permutation-diffusion chaotic encryption scheme utilizing a discrete-space chaotic map. The FPGA implementation of the cipher is analyzed considering area, maximum frequency, and power consumption, and comparisons are made with the AES. The proposed algorithm has a satisfactory trade-off between area, power and performance, obtaining a peak throughput 59% higher than state-of-the-art symmetric ciphers in the literature. Thus, the proposed cipher shows that chaotic ciphers are viable for both high-performance and low-power embedded devices. Tests verified the security of the proposed cipher against statistical, differential, brute-force, and chosen plain-text attacks. © The Author(s), under exclusive licence to Springer science+Business Media, LLC, part of Springer Nature 2025.

关键词： Cryptography

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Collaborative actuation of liquid crystal elastomer unit cells as a function design platform

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science China materials 2025年第1期68卷 236-243页

作者： Jinyu Wang Hari Krishna Bisoyi Yinliang Huang Yiyi Xu Xinfang Zhang Ben Fan Tao Yang Zhiyang Liu Shuai Huang Quan Li Institute of Advanced Materials and School of Chemistry and Chemical Engineering Southeast UniversityNanjing 211189China Materials Science Graduate Program Kent State UniversityKentOH 44242US

As future soft robotic devices necessitate a level of complexity surpassing current standards,a new design approach is needed that integrates multiple systems necessary to synchronize the motions of soft actuators and the response of signals,thereby enhancing the intelligence of flexible ***,we propose a liquid crystal elastomer unit cell-based platform that organizes the cells in a group to create expandable *** unit cell behaves like a flexible module that can expand biaxially into a specific,stable,and controllable *** the unit cells in different manners results in an adaptable soft grasper,a half-adder for information processing,and a tunable phononic *** implies a high level of reconfigurability and scalability in both structures and functions by elegantly reassembling the unit *** design strategy has the potential to integrate multiple functions that traditional soft actuators cannot accommodate,providing a platform for developing intelligent soft robotics.

关键词： liquid crystal elastomer light-responsive material smart material soft actuator

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Sodium niobate with high photocatalytic activity for the removal of organic dye and inactivation of Escherichia coli, Staphylococcus aureus, and Klebsiella pneumoniae bacteria: the effect of Zn doping on these properties

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Ceramics International 2025年

作者： Fernandes, Daiane Raubach, Cristiane Trassante, Carla Dias, Vagner Melo, Luize Silveira, Marcelle Carvalho, Ramon Moreira, Mario Jardim, Pedro Ferrer, Mateus Giongo, Janice Vaucher, Rodrigo Longo, Elson Cava, Sergio Post-Graduate Program in Materials Science and Engineering Federal University of Pelotas RS Pelotas96010-610 Brazil Post-Graduate Program in Microbiology and Parasitology Federal University of Pelotas RS Capão do Leão96160-000 Brazil Post-Graduate Program in Physics Federal University of Pelotas RS Capão do Leão96160-000 Brazil Functional Materials Development Center São Carlos Federal University SP São Carlos13565-905 Brazil

NaNbO3 doped with Zn (0.00, 0.02, and 0.05 mmol) was synthesized by the microwave-assisted hydrothermal method. Photocatalytic and antibacterial activities were investigated. X-ray diffraction revealed the coexistence of two orthorhombic symmetries (P21ma and Pbma), with doping promoting a progressive increase in the Pbma fraction. All samples exhibited a fiber-like shape (diameter of ∼200 nm), which remained unchanged with doping. The low Zn content (0.02 mmol) reduced the band gap energy from 3.08 to 2.95 eV. As a result, this sample exhibited superior photocatalytic activity, achieving 100 % RhB dye degradation within 45 min, under UV light. Scavenger tests revealed that hydroxyl radicals, holes, and superoxide radical anions were the main active species involved in the photocatalytic reaction. Additionally, the photocatalyst demonstrated excellent recyclability over three consecutive cycles. Pure NaNbO3 exhibited strong antibacterial activity, completely inhibiting the growth of S. aureus, E. coli, and K. pneumoniae at the tested concentrations. Although the Zn-doped sample also demonstrated antibacterial action, the response was concentration-dependent. This study is the first report on Zn doping in NaNbO3, as well as the first investigation of its antibacterial activity against K. pneumoniae and S. aureus. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Escherichia coli

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Si/C composites based on bubble 3D graphene-like porous materials as self-supporting anodes for high-performance lithium-ion batteries

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Electrochimica Acta 2025年 529卷

作者： Shan, Junwei Zhu, Zhiqing Chen, Zhihao Du, Feng Li, Quan Institute of Advanced Materials and School of Chemistry and Chemical Engineering Southeast University Nanjing211189 China Materials Science Graduate Program Kent State University KentOH44242 United States

Silicon (Si)-based anode materials are promising for lithium-ion batteries (LIBs) due to their high theoretical capacity, but challenges such as large volume changes during cycling and low conductivity hinder their practical application. In this study, we report a self-supporting, binder-free Si/C composite anode featuring structurally continuous, three-dimensional (3D) graphene-like silicon thin films, encapsulated by a 3D carbon film framework and coated with an amorphous carbon layer. This architecture is specifically designed to mitigate the volume expansion of silicon during cycling and enhance electrical conductivity. The spacing between the carbon films is systematically controlled by applying varying pressure compressions, allowing us to evaluate its effect on limiting the volume expansion of Si. At a current density of 1 A g-1, the C@Si@CPGN-3MPa anode exhibits an initial coulombic efficiency (ICE) of 84.08 %, a stable specific capacity of 825.3 mAh g-1, and excellent long-term cycling stability. This work provides valuable insights into the design of self-supporting Si-based anodes that offer long cycle life, high energy density, and enhanced structural stability, which are crucial for advancing the practical application of Si in LIBs. © 2025 Elsevier Ltd

关键词： Porous silicon

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Basal and Edge Plane Activity of Two-Dimensional Dirac Semimetal Nite2 for Hydrogen Evolution Reaction

SSRN

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SSRN 2025年

作者： Cho, Suyeon Jeong, Seung Weon Kim, Jeong Hyo Lee, Seungyeon Yang, Heejun Lee, Sangheon Division of Chemical Engineering and Materials Science Graduate Program in System Health Science and Engineering Ewha Womans University Seoul03760 Korea Republic of Daejeon34141 Korea Republic of

. Nickel ditelluride (NiTe2), one of group-10 transition metal dichalcogenides, has shown intriguing surface states originating from its topological semi-metallicity. Here, we demonstrate abnormal catalytic activities at the NiTe2 surface for hydrogen evolution reaction (HER). We investigate the differences in catalytic activities at the basal and edge planes of NiTe2 using a micro-sized electrochemical reactor. The basal plane is found to be more active than the edge plane, resulting in a current density at the basal plane of NiTe2 exceeding 800 mA/cm2 with a small overpotential of -0.162 V. We conduct ab initio calculations to estimate the intrinsic catalytic activities of HER on the basal and edge planes of NiTe2. Interestingly, our calculation results suggest that the active sites at the edge plane are electrochemically more active than those at the basal plane. The discrepancy between the experimental measurements and theoretical predictions for the crystal-orientation-dependent HER activity highlights that the specialty of a topological semimetal plays a vital role in determining the HER rate for NiTe2 nanoparticle catalysts © 2025, The Authors. All rights reserved.

关键词： Hydrogen evolution reaction

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Flexible refractory castables based on the Al2O3-MgO-TiO2 system

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Ceramics International 2025年

作者： Reitmann, B. Borges, O.H. Falsetti, L.O.Z. Pagliosa Neto, C. Pandolfelli, V.C. Federal University of São Carlos Graduate Program in Materials Science and Engineering São Carlos Brazil São Carlos Brazil RHI Magnesita Research and Development Center Contagem Brazil

Toughening by in-situ phase formation is highly desired for high-performance refractories, as it enhances their thermomechanical properties (e.g. thermal shock damage resistance). For this purpose, pseudobrookite and intermediary spinels are promising phases due to their thermal expansion mismatch, resulting in self-microcracking. Aiming to develop highly flexible refractory castables, compositions based on the Al2O3-MgO-TiO2 system were formulated with the aid of computational thermodynamics. Of the most promising compositions, five of them were experimentally produced and had their thermomechanical and physical properties assessed by X-ray diffraction, in-situ elastic modulus, thermal shock damage analysis (ΔT = 1000 °C) and scanning electron microscopy. Results pointed out that small titania contents led to a positive effect on microstructure densification, improving the mechanical performance of the refractories and generation of phases that induce microcracking upon cooling, enhancing the thermal shock damage resistance. Nevertheless, an excess of TiO2 led to extensive cracking and cohesion loss in the refractory matrix. © 2025

关键词： Microcracking

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Optimized hydrogen production via dry methane reforming with Ni/Al2O3 catalysts modified by cobalt and Boron: A design of experiments approach for enhanced performance

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Journal of the Energy Institute 2025年 120卷

作者： Silva, Yuri K.R.O. Melo, Dulce M.A. Maziviero, Fernando V. Medeiros, Rodolfo L.B.A. Silva, Joyce C.A. Azevedo, Amanda L. Araújo, Tomaz R. Braga, Renata M. Graduate Program in Chemistry Federal University of Rio Grande do Norte Natal Brazil Graduate Program in Materials Science and Engineering Federal University of Rio Grande do Norte Natal Brazil Agricultural School of Jundiaí Federal University of Rio Grande do Norte RN Macaíba Brazil

In this study, seven catalysts were designed, synthesized, and evaluated using the Design of Experiments (DOE) approach. The catalysts included one nickel (Ni) catalyst as a standard, two Ni catalysts promoted with boron trioxide (B2O3), two bimetallic catalysts in Ni-Cobalt (Co) systems, and two bimetallic catalysts also promoted with B2O3, all supported on γ-alumina. The γ-alumina support was synthesized via the microwave-assisted combustion method, while the metals and non-metallic promoter were incorporated using incipient wetness impregnation. The catalysts were thoroughly characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Field-Emission Scanning Electron Microscopy (FE-SEM), physisorption of N2 and Temperature-programmed Reduction (TPR). Activation was performed at 700 °C for 1 h under hydrogen (H2) flow. Catalytic performance was tested in a fixed-bed quartz reactor coupled with a gas chromatograph over 12 h at a space velocity of 96 L g−1 h−1. Carbon formation was analyzed by XRD and Raman spectroscopy, revealing a lower degree of crystalline carbon with a disorder index of 1.29 in the sample containing the highest B2O3 content. Thermogravimetric analysis (TG) quantified the reduction in carbon production by up to 57.7 %, demonstrating that B2O3 significantly reduced coke deposition. The results indicate that the catalysts with all three components exhibited high stability, enhanced catalytic activity, and minimized coke formation. A cubic special predictive model, with an Fcalculated/Ftabulated ratio of 41.12, demonstrated high statistical significance as confirmed by the Fisher test. © 2025 The Energy Institute

关键词： Fourier transform infrared spectroscopy

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Laser ablation synthesis of BiOCl/Ag/WO₃nanocomposite to evaluate its photocatalysis performance

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Modern Physics Letters B 2025年第4期39卷

作者： Lin, Kai-Siang Furube, Akihiro Katayama, Testuro Koinkar, Pankaj Wu, Chang Mou Institute of Post-LED Photonics And Graduate School of Science and Technology for Innovation Tokushima University Tokushima 770 8506 Japan Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei Taiwan

Bismuth oxychloride (BiOCl)/silver (Ag)/tungsten oxide (WO3) nanocomposite was produced by laser ablation to enhance photocatalytic performance. The ternary nanocomposite showed a superior photocatalytic activity for methylene blue (MB) degradation under visible light compared to pure BiOCl and BiOCl/Ag with degradation up to 74%, 62%, and 52 %, respectively. The addition of Ag improved the dispersibility of BiOCl and WO3, which reduced the recombination of electron-hole pairs and can be responsible for higher photocatalytic activity. © 2025 World Scientific Publishing Company.

关键词： Bismuth oxychloride laser ablation nanocomposite photocatalysis

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Biogas and biohydrogen production using the main agricultural biomasses generated in Brazil: An integrative analysis to contribute to the implementation of energy decarbonization

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International Journal of Hydrogen Energy 2025年 137卷 190-201页

作者： Maele Costa dos Santos Willian Cezar Nadaleti Grzegozr Przybyla Jones Bittencourt Machado Environmental and Energy Engineering Lab – LEAE Engineering Center – CEng Postgraduation Program in Environmental Sciences - PPGCAmb The Federal University of Pelotas – UFPel Pelotas Rio Grande do Sul Brazil Post-graduation Program in Materials Science and Engineering - PPGCEM. The Federal University of Pelotas – UFPel Pelotas Rio Grande do Sul Brazil Department of Thermal Technology Silesian University of Technology Poland

The use of bioenergy feedstocks, agricultural and forest residues constitute a viable decarbonization design with regards to biofuel production. Nevertheless, aspects within agriculture that can be related to this process for instance, include: technology and infrastructure, policies, land use, environmental factors among others. Solving these challenges needs research, technological intervention, supportive policies and acclaimed association among agriculture and energy departments, especially considering that agricultural and forest residues are an abundant source of biomass which can be converted into renewable energy, for example, biogas and hydrogen. This study provides an assessment of the capacity for generating biogas and biohydrogen using the primary biomasses produced in Brazil's agricultural sector, specifically from rice, corn, soybeans, and wheat as alternative bioenergy resources. Data regarding production and waste creation were collected from the Statistical and Geographical Information of Brazilian Agriculture at the Institute of Geography and Statistics of Brazil and the Energy Research Company. Corn and Soybean straw showed the highest potentials for biohydrogen (PH) production, accounting to 6,67 E+09 m 3 /year and 5,56 E+09 m 3 /year respectively. The energy production using the generated biogas showed the most satisfactory results compared to biohydrogen, with the highest generation values of 222 TWh of energy for corn straw, 187 TWh for soybean straw. The total accumulated biogas and biohydrogen produced from the residual biomass of Brazil's four main permanent crops was approximately 8.25 E+10 and 1.33 E+10 m 3 /year, respectively. The generation of biogas and hydrogen holds significant potential for fostering a more sustainable energy future. By utilizing the unique advantages of these two methods—biogas as a waste-to-energy option and hydrogen as a clean and adaptable energy source—we can develop a more robust, varied, and low-carbon energy

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