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Scalable, rapid, and predictable ultraviolet-visible-near-infrared camouflage systems inspired by squid skin

Journal of Materials Chemistry C 2025年第22期13卷 11040-11051页

作者： Panyiming Liu Chengyi Xu Alon A. Gorodetsky Department of Materials Science and Engineering University of California Irvine CA 92697 USA Department of Chemical and Biomolecular Engineering University of California Irvine CA 92697 USA

Materials and systems with tunable optical and spectroscopic properties have attracted much research interest for applications in adaptive camouflage technologies. Within this context, our laboratory has developed bioinspired surface wrinkling-based adaptive camouflage platforms with tunable visible-to-infrared properties. Herein, we build upon these efforts and report the scalable fabrication of squid skin-inspired ultraviolet-visible-near-infrared adaptive camouflage systems with improved response times and predictable spectroscopic functionalities. These findings lay the groundwork for the iterative computational design, high-throughput manufacturing, and performance optimization of analogous adaptive camouflage, heat management, light-to-heat conversion, rewritable optical, and electromagnetic shielding technologies.

关键词： Adaptive optics

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An efficient bifunctional Ni-Nb_(2)O_(5)nanocatalysts for the hydrodeoxygenation of anisole

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Chinese Journal of chemical engineering 2022年第9期35卷 187-197页

作者： Juan Xu Ping Zhu Islam HEl Azab Ben Bin Xu Zhanhu Guo Ashraf YElnaggar Gaber AMMersal Xiangyi Liu Yunfei Zhi Zhiping Lin Hassan Algadi Shaoyun Shan Faculty of Chemical Engineering Kunming University of Science and TechnologyKunming 650500China College of Chemical Engineering Southwest Forestry UniversityKunming 650224China Yunnan Province Special Equipment Safety Inspection and Research Institute Kunming 650228China Department of Food Science and Nutrition College of ScienceTaif UniversityTaif 21944Saudi Arabia Department of Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon Tyne NE18STUK Integrated Composites Lab(ICL) Department of Chemical&Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996USA Department of Chemistry College of ScienceTaif UniversityTaif 21944Saudi Arabia Taizhou University Taizhou 31800China Department of Electrical Engineering Faculty of EngineeringNajran UniversityNajran 11001Saudi Arabia

The Ni-Nb_(2)O_(5)nanocatalysts have been prepared by the solgel method,and the catalytic hydrodeoxygenation(HDO)performance of anisole as model compound is *** results show that Nb exists as amorphous Nb_(2)O_(5)species,which can promote Ni *** addition of Nb_(2)O_(5)increases the acidity of the ***,when the content of niobium is high,there is an inactive Nb-Ni-O mixed *** size and morphology of Ni grains in catalysts are different due to the difference of Nb/Ni molar *** Ni_(0.9)Nb_(0.1)sample has the largest surface area of 170.8 m^(2)·g^(-1)among the catalysts prepared in different Nb/Ni molar ratios,which is mainly composed of spherical nanoparticles and crack *** HDO of anisole follows the reaction route of the hydrogenation HYD *** Ni_(0.9)Nb_(0.1)catalyst displayed a higher HDO performance for anisole than Ni *** selectivity to cyclohexane over the Ni_(0.9)Nb_(0.1)sample is about 10 times that of Ni catalyst at 220℃and 3 MPa H_(2).The selectivity of cyclohexane is increased with the increase of reaction *** anisole is almost completely transformed into cyclohexane at 240℃,3 MPa H_(2)and 4 h.

关键词： Hydrodeoxygenation(HDO) Catalysts Ni-Nb_(2)O_(5) Solgel method Anisole

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Production and characterization of polymeric nanocomposite foams based on starch and cellulose nanofibers from oil palm mesocarp fiber

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Applied Nanoscience (Switzerland) 2025年第2期15卷 1-11页

作者： Souza, Mariana Costa Gonçalves, Ana Paula Bispo da Silva Oliveira, Emanoel Igor dos Santos, Juscivaldo Passos Lazzari, Lídia Kunz Zattera, Ademir José José, Nadia Mamede Chemical Engineering Graduate Program Polytechnic School Federal University of Bahia Bahia Salvador Brazil Department of Education Federal Institute of Education Science and Technology Feira de Santana Bahia Brazil Postgraduate Program in Process Engineering and Technologies University of Caxias Do Sul Rio Grande Do Sul Caxias Do Sul Brazil

The demand for sustainable and eco-friendly materials has promoted studies over the years to explore different polymeric materials that meet requirements such as biodegradability and sustainability. In this context, biopolymer materials based on cellulose nanoparticles and starch from different botanical sources have been investigated, aiming to achieve satisfactory performance. The present study aims to develop and characterize cassava starch foams based on density, scanning electron microscopy (SEM), and three-point flexure tests, and to evaluate the effect of cellulose nanofibers obtained from palm mesocarp fibers using the ultrafine friction grinding method after different processing times, characterized by X-ray diffractometry (XRD), microscopy, and chemical composition, as a reinforcing filler. The chemical composition and scanning electron microscopy revealed the effectiveness of the cellulose isolation process, with the analysis of the chemical composition revealing a cellulose content of 55.70% in the fibers after pulping and bleaching, in addition to changes in the visual characteristics of the material after the process aimed at isolating the cellulose. After grinding, XRD showed an increase in crystallinity (76.1% at the maximum grinding time), along with typical microscopy images of cellulose nanofibers. The analysis of the obtained nanocomposites provided insights into the role of these nanostructures in the thermo-expanded starch matrix, indicating that the nanofibers promoted changes such as an increase in mechanical properties and crystallinity, which contributed to improving overall mechanical performance. A 67.48% increase in flexural strength was achieved for the formulation with cellulose nanofibers that underwent 150 min of grinding, without causing major variations in density. © King Abdulaziz City for science and Technology 2025.

关键词： Starch

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engineering nanoscale H supply chain to accelerate methanol synthesis on ZnZrO_x

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Nature Communications 2023年第1期14卷 819页

作者： Lee, Kyungho Mendes, Paulo C. D. Jeon, Hyungmin Song, Yizhen Dickieson, Maxim Park Anjum, Uzma Chen, Luwei Yang, Tsung-Cheng Yang, Chia-Min Choi, Minkee Kozlov, Sergey M. Yan, Ning Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive 4 Singapore 117585 Singapore Department of Chemical and Biomolecular Engineering KAIST Daejeon 34141 South Korea Institute of Sustainability for Chemical Energy and Environment Agency for Science Technology and Research (A*STAR) Singapore 627833 Singapore Department of Chemistry National Tsing Hua University Hsinchu 300044 Taiwan Frontier Research Center on Fundamental and Applied Sciences of Matters National Tsing Hua University Hsinchu 300044 Taiwan

Metal promotion is the most widely adopted strategy for enhancing the hydrogenation functionality of an oxide catalyst. Typically, metal nanoparticles or dopants are located directly on the catalyst surface to create interfacial synergy with active sites on the oxide, but the enhancement effect may be compromised by insufficient hydrogen delivery to these sites. Here, we introduce a strategy to promote a ZnZrO_x methanol synthesis catalyst by incorporating hydrogen activation and delivery functions through optimized integration of ZnZrO_x and Pd supported on carbon nanotube (Pd/CNT). The CNT in the Pd/CNT + ZnZrO_x system delivers hydrogen activated on Pd to a broad area on the ZnZrO_x surface, with an enhancement factor of 10 compared to the conventional Pd-promoted ZnZrO_x catalyst, which only transfers hydrogen to Pd-adjacent sites. In CO₂ hydrogenation to methanol, Pd/CNT + ZnZrO_x exhibits drastically boosted activity—the highest among reported ZnZrO_x-based catalysts—and excellent stability over 600 h on stream test, showing potential for practical implementation. © 2023, The Author(s).

关键词： Catalysis chemical engineering

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3D imaging reveals changes in the neurovascular architecture of the murine calvarium with aging

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Bone Research 2025年第2期13卷 463-475页

作者： Allison L.Horenberg Yunke Ren Eric Z.Zeng Alexandra N.Rindone Arvind P.Pathak Warren L.Grayson Department of Biomedical Engineering Johns Hopkins University School of MedicineBaltimoreMDUSA Translational Tissue Engineering Center Johns Hopkins University School of MedicineBaltimoreMDUSA Russell H.Morgan Department of Radiology and Radiological Sciences the Johns Hopkins University School of MedicineBaltimoreMDUSA Sidney Kimmel Comprehensive Cancer Center the Johns Hopkins University School of MedicineBaltimoreMDUSA Department of Electrical Engineering Johns Hopkins UniversityBaltimoreMDUSA Institute for Nanobiotechnology Johns Hopkins UniversityBaltimoreMDUSA Department of Materials Science and Engineering Johns Hopkins UniversityBaltimoreMDUSA Department of Chemical and Biomolecular Engineering Johns Hopkins UniversityBaltimoreMDUSA

Calvarial nerves,along with vasculature,influence skull formation during development and following injury,but it remains unclear how calvarial nerves are spatially distributed during postnatal growth and *** the spatial distribution of nerves in the skull remains a challenge due to a lack of methods to quantify 3D structures in intact *** visualize calvarial 3D neurovascular architecture,we imaged nerves and endothelial cells with lightsheet microscopy.

关键词： endothelial cells calvarial nervesalong D imaging skull formation neurovascular architecture calvarial nerves lightsheet microscopy murine calvarium

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Surface modification techniques of membranes to improve their antifouling characteristics:recent advancements and developments

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Frontiers of chemical science and engineering 2023年第12期17卷 1837-1865页

作者： Muhammad Tawalbeh Haya Aljaghoub Muhammad Qasim Amani Al-Othman Sustainable and Renewable Energy Engineering Department University of SharjahSharjah 27272United Arab Emirates Sustainable Energy&Power Systems Research Centre RISEUniversity of SharjahSharjah 27272United Arab Emirates Industrial Engineering and Engineering Management Department University of SharjahSharjah 27272United Arab Emirates Department of Chemical and Biological Engineering American University of SharjahSharjah 26666United Arab Emirates Materials Science and Engineering Program College of Arts and SciencesAmerican University of SharjahSharjah 26666United Arab Emirates

Extensive research efforts are currently devoted to developing and improving conventional technologies for water treatment. Membrane-based water treatment technologies are among the most preferred options due to their commercial success, simple operation, low energy and space requirements, and high separation efficiency. Despite the advances made in membrane-based technologies, fouling remains a critical challenge. Fouling occurs upon the accumulation of unwanted impurities on the membrane surface and within the membrane pores which results in a significant decline in the membrane permeate flux. To alleviate the operational challenges from fouling, surface modification to develop antifouling membranes appears to be an effective technique. A comprehensive review of the surface modification techniques for the development of antifouling membranes is provided in this paper. chemical surface modification techniques (grafting and plasma treatment), physical modification techniques (blending, coating, adsorption, and thermal treatment), and combined physical and chemical modification techniques have been discussed. Moreover, the challenges related to surface modification and the future research directions are addressed.

关键词： fouling antifouling membrane surface modification membrane pretreatment

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Accurate prediction of oxygen vacancy concentration with disordered A-site cations in high-entropy perovskite oxides

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npj Computational Materials 2023年第1期9卷 2053-2065页

作者： Jiyun Park Boyuan Xu Jie Pan Dawei Zhang Stephan Lany Xingbo Liu Jian Luo Yue Qi School of Engineering Brown UniversityProvidenceRI 02912USA Department of Physics Brown UniversityProvidenceRI 02912USA Department of Chemical Engineering and Materials Science Michigan State UniversityEast LansingMI 48824USA Program of Materials Science and Engineering University of California San DiegoLa JollaCA 92093USA Materials Science Center National Renewable Energy LaboratoryGoldenCO 80401USA Department of Mechanical and Aerospace Engineering Benjamin M.Statler College of Engineering and Mineral ResourcesWest Virginia UniversityMorgantownWV 26506USA Department of NanoEngineering University of California San DiegoLa JollaCA 92093USA

Entropic stabilized ABO_(3) perovskite oxides promise many applications,including the two-step solar thermochemical hydrogen(STCH)*** binary and quaternary A-site mixed{A}FeO_(3) as a model system,we reveal that as more cation types,especially above four,are mixed on the A-site,the cell lattice becomes more cubic-like but the local Fe–O octahedrons are more *** comparing four different Density Functional Theory-informed statistical models with experiments,we show that the oxygen vacancy formation energies(E^(f)_(V))distribution and the vacancy interactions must be considered to predict the oxygen non-stoichiometry(δ)*** STCH applications,the E^(f)_(V) distribution,including both the average and the spread,can be optimized jointly to improveΔδ(difference ofδbetween the two-step conditions)in some hydrogen production *** model can be used to predict the range of water splitting that can be thermodynamically improved by mixing cations in{A}FeO_(3) perovskites.

关键词： perovskite vacancy oxides

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Mitochondria-specific near-infrared photoactivation of peroxynitrite upconversion luminescent nanogenerator for precision cancer gas therapy

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Acta Pharmaceutica Sinica B 2024年第1期14卷 378-391页

作者： Hui Yu Aliya Tiemuer Xufeng Yao Mingyuan Zuo Hai-Yan Wang Yi Liu Xiaoyuan Chen Department of Biomedical Engineering School of EngineeringChina Pharmaceutical UniversityNanjing 211198China School of Mechanical Engineering Southeast UniversityNanjing 211189China Departments of Diagnostic Radiology SurgeryChemical and Biomolecular Engineeringand Biomedical EngineeringYong Loo Lin School of Medicine and College of Design and EngineeringNational University of SingaporeSingapore 119074Singapore Clinical Imaging Research Centre Centre for Translational MedicineYong Loo Lin School of MedicineNational University of SingaporeSingapore 117599Singapore Nanomedicine Translational Research Program Yong Loo Lin School of MedicineNational University of SingaporeSingapore 117597Singapore Institute of Molecular and Cell Biology Agency for ScienceTechnologyand Research(A*STAR)ProteosSingapore 138673Singapore

Gas therapy is emerging as a highly promising therapeutic strategy for cancer ***,there are limitations,including the lack of targeted subcellular organelle accuracy and spatiotemporal release precision,associated with gas *** this study,we developed a series of photoactivatable nitric oxide(NO)donors NRh-R-NO(R=Me,Et,Bn,iPr,and Ph)based on an N-nitrosated upconversion luminescent rhodamine *** the irradiation of 808 nm light,only NRh-Ph-NO could effectively release NO and NRh-Ph with a significant turn-on frequency upconversion luminescence(FUCL)signal at 740 nm,ascribed to lower N-N bond dissociation *** also investigated the involved multistage near-infrared-controlled cascade release of gas therapy,including the NO released from NRh-Ph-NO along with one NRh-Ph molecule generation,the superoxide anion O_(2)^(⋅−)produced by the photodynamic therapy(PDT)effect of NRh-Ph,and highly toxic peroxynitrite anion(ONOO‒)generated from the co-existence of NO and O_(2)^(⋅−).After mild nano-modification,the nanogenerator(NRh-Ph-NO NPs)empowered with superior biocompatibility could target *** an 808 nm laser irradiation,NRh-Ph-NO NPs could induce NO/ROS to generate RNS,causing a decrease in the mitochondrial membrane potential and initiating apoptosis by caspase-3 activation,which further induced tumor immunogenic cell death(ICD).In vivo therapeutic results of NRh-Ph-NO NPs showed augmented RNS-potentiated gas therapy,demonstrating excellent biocompatibility and effective tumor inhibition guided by real-time FUCL ***,this versatile strategy defines the targeted RNS-mediated cancer therapy.

关键词： Near infrared Photo-triggered Mitochondrion Upconversion luminescent bioimaging Peroxynitrite Nanogenerator Gas therapy In vivo

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Boosting oxygen evolution performance over synergistic tiara nickel clusters and thin layered double hydroxides

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Nano Research Energy 2024年第4期3卷 88-95页

作者： Xinrui Gu Song Guo Yifei Zhang Jingjing Zhang Piracha Sanwal Liangliang Xu Zhen Zhao Rongchao Jin Gao Li State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Institute of Catalysis for Energy and Environment College of Chemistry and Chemical EngineeringShenyang Normal UniversityShenyang 110034China Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-RoYuseong-GuDaejeon 34141Republic of Korea Department of Chemistry Carnegie Mellon UniversityPittsburghPA 15213USA University of Chinese Academy of Sciences Beijing 100049China

The two-dimensional layered double hydroxides(LDHs)and zero-dimensional metal clusters have emerged as promising nanomaterials in the field of sustainable water oxidation,which can also facilitate joint experimental and computational *** this study,the synthesis of Ni_(6)@LDH composites,comprising atomically precise Ni_(6)(MPA)12(MPA:mercaptopropionic acid)clusters embedded into LDH nanosheets via electrostatic interaction,represents a significant advancement in the development of nanomaterials for sustainable water ***_(6)@NiFe-LDH exhibits superior electrochemical performance in oxygen evolution reaction(OER),exhibiting OER overpotentials of 198 mV@10 mA·cm^(-2) and 290 mV@100 mA·cm^(-2) with a low Tafel slope of 29 mV·dec^(-1).It surpasses the corresponding NiFe-LDH and commercial RuO_(2) catalysts,primarily due to the synergistic interaction between Ni_(6) clusters and ***,our combined experimental and computational approach reveals that the M-OOH_(ads )formation is the rate-determining step(RDS)for the Ni_(6)-based catalysts,differing from the RDS for NiFe-LDH itself(the M-Oads formation).These efforts serve as an attempt to push forward the current research frontier to study structure–property relationships progressing from the micro-/nano-level to the precise atomic-level.

关键词： Ni6 clusters layered double hydroxide(LDH) synthetic engineering oxygen evolution reaction density functional theory

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Effect of Mixing Strategy on the Structure-Properties of the PLA/PBAT Blends Incorporated with CNC

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Journal of Renewable Materials 2022年第1期10卷 149-164页

作者： Deniz Sema Sarul Dogan Arslan Emre Vatansever Yusuf Kahraman Ali Durmus Reza Salehiyan Mohammadreza Nofar Polymer Science and Technology Program Institute of Science and TechnologyIstanbul Technical UniversityIstanbul34469Turkey Metallurgical&Materials Engineering Department Faculty of Chemical and Metallurgical EngineeringIstanbul Technical UniversityIstanbul34469Turkey Department of Chemical Engineering Faculty of EngineeringIstanbul University-CerrahpasaIstanbul34320Turkey Department of Materials Research and Technology Luxembourg Institute of Science and TechnologyEsch-sur-Alzette4362Luxembourg

Polylactide(PLA)/poly(butylene adipate-co-terephthalate)(PBAT)blend nanocomposites including 3 wt%of cel-lulose nanocrystals(CNCs)were prepared by melt compounding method in a twin-screw extruder and an inter-nal *** nanocomposites were formulated by diluting three different masterbatches prepared by solution casting method that contained 7 wt%of *** masterbatches were:(m1)PLA/PBAT/CNC masterbatch;(m2)PLA/CNC masterbatch;and(m3)PBAT/CNC *** were to explore how different prepara-tion methods affect the dispersion and localization of CNC and hence the properties of PLA/PBAT/CNC blend *** electron microscopy(SEM)was used to study the structural changes of the *** properties of PLA/PBAT blends and PLA/PBAT/CNC blend nanocomposites were also *** the samples prepared by internal mixer,the rheological behavior of blend nanocomposite prepared through premixing of CNC particles with PLA showed a transition from liquid-like to a gel-like *** to the rheological results and differential scanning calorimetry(DSC)analysis,it was found that the CNC overall enhanced the viscoelastic properties of blends and improved the PLA crystallization,*** mechanical analysis(DMA)illustrated that the incorporation of CNC also enhanced the elastic modulus of PLA/PBAT blends specifically above the glass transition temperature of *** expected improvements in mechanical properties did not occur due to the possible existence of residual solvent in the blends.

关键词： Polylactide poly(butylene adipate-co-terephthalate) cellulose nanocrystals blend nanocomposite morphology rheology

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