Article
Green & Sustainable Science & Technology
Xuanzheng Zhou, Qiliang Fu, Zhijun Zhang, Yiqun Fang, Yonggui Wang, Fengqiang Wang, Yongming Song, Charles U. Pittman, Qingwen Wang
Summary: The study successfully prepared a nanocoating layer with favorable properties to increase ignition time on the surface of WPC, and found that it could effectively improve fire retardancy and reduce smoke generation.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Manufacturing
Alberto Andreu, Sanglae Kim, Jorg Dittus, Marco Friedmann, Juergen Fleischer, Yong-Jin Yoon
Summary: This study proposes using a heated roller to increase interlayer adhesion in FDM 3D printing, thereby improving the mechanical properties of printed components. The effects of roller pressure, speed, and temperature on bonding strength are analyzed, and the results show significant increases in tensile and flexural strength, as well as improved crystallinity and geometric accuracy.
ADDITIVE MANUFACTURING
(2022)
Article
Electrochemistry
Ling Zhang, Jiaying Bi, Zhikun Zhao, Yuxin Wang, Daobin Mu, Borong Wu
Summary: A 3D MXene material was fabricated to immobilize polysulfides, preventing restacking of MXene nanosheets and enhancing sulfur utilization, leading to excellent battery performance on the sulfur cathode.
ELECTROCHIMICA ACTA
(2021)
Review
Chemistry, Multidisciplinary
Shouwei Zhang, Fan Xia, Sophie Demoustier-Champagne, Alain M. Jonas
Summary: Layer-by-layer assembly is a versatile technology for constructing multifunctional nanomaterials with fine control over thickness and structure, suitable for various applications in nanochannels with different growth mechanisms. It shows potential for numerous applications in fields such as nanoreactors, drug delivery, and fluidic devices.
Article
Chemistry, Analytical
Huan Chen, Zhongda Wang, Zhiyong Liu, Qian Niu, Xingwen Wang, Zhuoyue Miao, Huanyu Zhang, Jia Wei, Mimi Wan, Chun Mao
Summary: A new 3D mesoporous-macroporous interface was developed for super-sensitive electrochemical detection of cancer cells. The layer-by-layer assembly method maximized exposure of active substances for better cellular capture performance. This platform showed excellent cancer cell detection performance, stability, and selectivity, potentially enhancing early cancer detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Polymer Science
Thomas Hanemann, Alexander Klein, Siegfried Baumgaertner, Judith Jung, David Wilhelm, Steffen Antusch
Summary: High-performance thermoplastics like PEEK have great potential for structural applications, and combining them with additive manufacturing methods, such as injection molding, can further extend their usage. This study focused on enhancing the properties of PEEK by doping it with carbon nanotubes and copper particles, and then using it as a material for 3D printing. The addition of fillers did not significantly affect the tensile strength of PEEK, but it did increase the thermal conductivity.
Article
Chemistry, Multidisciplinary
Seunghui Woo, Donghyeon Nam, Woojae Chang, Younji Ko, Seokmin Lee, Yongkwon Song, Bongjun Yeom, Jun Hyuk Moon, Seung Woo Lee, Jinhan Cho
Summary: This study introduces a layer-by-layer assembly-induced metal electrodeposition approach to prepare highly porous 3D-current collectors with high flexibility and large surface area. By electroplating Ni onto metal nanoparticle-coated substrates, the sheet resistance is reduced while maintaining the porous structure of the paper. This method is compatible with commercial electroplating processes and can be extended to electroplating applications with various metals besides Ni.
Article
Engineering, Civil
Zhanghao Hou, Peng Liu, Xiaoyong Tian, Weijun Zhu, Chuanyang Wang, Jin He, Hongbo Lan, Dichen Li
Summary: The 3D-printed coaxial continuous hybrid fibre-reinforced composites (CHFRCs) have a positive hybrid effect on impact strength and enhanced comprehensive performances. Compared with continuous carbon-fibre-reinforced composites and continuous Kevlar-fibre-reinforced composites, 3D-printed coaxial CHFRCs have significantly higher impact and flexural strengths. Therefore, they have great potential for use in thin-walled structures, especially in aerospace.
THIN-WALLED STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Peiran Wei, Ciera E. Cipriani, Emily B. Pentzer
Summary: The study introduces a method to produce and print PCM-filled inks using direct ink writing technique, which successfully prints inks with excellent thermal regulation capacity and stability over multiple melting/solidifying cycles.
Article
Materials Science, Composites
Mingjie Feng, Yamin Pan, Mingtao Zhang, Qingsen Gao, Chuntai Liu, Changyu Shen, Xianhu Liu
Summary: HDPE-g-MAH serves as a compatibilizer in ternary composites to reduce filler agglomeration, promote network structure formation, and enhance thermal conductivity. The mechanical performance and thermal conductivity of the composites are related to their morphology and crystallinity; although a high fraction of BN nanosheets can decrease the electrical conductivity of the composites, they have little effect on the electromagnetic interference shielding performance.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Mauricio Cruz Saldivar, Eugeni L. Doubrovski, Mohammad J. Mirzaali, Amir A. Zadpoor
Summary: This paper presents a nonlinear coarse-graining approach to predict the mechanical behavior of biomimetic composites using foam-based constitutive equations. The proposed method has been validated and applied successfully to design advanced architected materials.
ADDITIVE MANUFACTURING
(2022)
Article
Optics
Wenjun Kang, Zhihan Hong, Rongguang Liang
Summary: This paper presents a quantitative study on the printing process of optical lenses using a hybrid material, demonstrating continuous printing using unique curing property and digital light process technology. An equal thickness and equal arc combo method has been proposed to help smooth the surface finish of the lenses. Millimeter-level spherical lenses were successfully fabricated with discussed optical performance.
Review
Nanoscience & Nanotechnology
Dharneedar Ravichandran, Weiheng Xu, Sayli Jambhulkar, Yuxiang Zhu, Mounika Kakarla, Mohammed Bawareth, Kenan Song
Summary: This paper discusses the application of nanoparticles and their ordered assembly in 3D printing. It explores the properties of nanoparticles, assembly challenges, and the potential advantages of 3D printing for producing high-performance polymer/nanoparticle composites. It provides suggestions for overcoming challenges and utilizing the capabilities of 3D printing in directing nanoparticles assembly.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Hang Chen, Ya-Qi Wang, Fei Huang, Chao Tu, Li Cui
Summary: A novel strategy for preparing high efficiency, durable, and recyclable photocatalytic materials based on ZIF-8 is proposed, where ZIF-8 is self-assembled layer-by-layer on carboxyl cotton fabric. The functionalized fabric shows good degradability to methylene blue under visible light irradiation, with about 99.8% degradation after 21 min and maintaining about 94.8% photocatalytic activity after six times of recycling. The study demonstrates great potential in the development of textile-based multifunctional photocatalytic materials.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Guipeng Quan, Yulin Liu, Hengyu Feng, Jun Li, Zhen Yan, Chang Yang, Daimei Li, Linghan Xiao, Yujing Liu
Summary: Prompted by the properties of biomimetic fish scale hierarchy, the paper adopts the layer-by-layer (LbL) assembly methodology to generate graphene oxide (GO), polyetheramine (PEA), and carbon nanotubes (CNTs) on the surface of carbon fibers (CFs), which results in a new interface phase. After two cycles of assembly, the thermal conductivity of the composite improves by 51.5%, and the interlayer shear strength, flexural strength, and flexural modulus increase by 52.2%, 33.3%, and 60.1%, respectively. The study contributes to the production of biomimetic composites with high strength and excellent thermal conductivity.
APPLIED SURFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Shuang Jiang, Nicholas A. Kotov
Summary: Chiral inorganic nanostructures have a strong interaction with photons, leading to a change in their polarization state and the emission of circularly polarized light. Understanding these polarization effects is important for various chemical and biological processes, as well as the development of chiral photonics. The interpretation of these effects is dependent on the structural parameters of the nanostructures, and there are different types of nanomaterials that exhibit either dominant circularly polarized luminescence or circularly polarized scattering.
ADVANCED MATERIALS
(2023)
Article
Optics
Lukas Ohnoutek, Ji-Young Kim, Jun Lu, Ben J. Olohan, Dora M. Rasadean, G. Dan Pantos, Nicholas A. Kotov, Ventsislav K. Valev
Summary: The study demonstrates the third-harmonic Mie scattering optical activity in suspensions of semiconductor nanostructured helices, allowing for chiroptical characterization of sample volumes as small as 10(-17) m(3). The new experimental results open up possibilities for high-throughput chiroptical characterization of chiral compounds in ultrasmall volumes.
Article
Multidisciplinary Sciences
Hewei Zhao, Shaojia Liu, Yan Wei, Yonghai Yue, Mingrui Gao, Yangbei Li, Xiaolong Zeng, Xuliang Deng, Nicholas A. Kotov, Lin Guo, Lei Jiang
Summary: Accurate replication and scalable production of high-performance biomaterials are challenging, but a newly engineered enamel analog with hierarchical structure at multiple scales shows promising results.
Review
Chemistry, Multidisciplinary
Junyoung Kwon, Ki Hyun Park, Won Jin Choi, Nicholas A. Kotov, Jihyeon Yeom
Summary: Chirality is found in various scales in the universe and living creatures. This article discusses the state of the art spectroscopic methods for analyzing chiral nanomaterials at different photon wavelengths, with a focus on self-organized hierarchical chirality and single-particle spectroscopy.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Anastasia Visheratina, Alexander Visheratin, Prashant Kumar, Michael Veksler, Nicholas A. Kotov
Summary: Nanoscale chirality is a rapidly advancing research field that studies the properties and activities of chiral nanostructures. Computational identification of chirality from electron microscopy images is challenging due to ambiguity in differentiating left-handed and right-handed particles and the two-dimensional projection of the three-dimensional structure. In this study, deep learning algorithms were shown to accurately identify and classify twisted bowtie-shaped microparticles as left-handed or right-handed. The algorithm, trained on a small set of electron microscopy images, demonstrated the ability to recognize other chiral shapes with high accuracy, indicating its true learning abilities.
Article
Chemistry, Multidisciplinary
E. Sumeyra Turali-Emre, Ahmet E. Emre, Drew A. Vecchio, Usha Kadiyala, J. Scott VanEpps, Nicholas A. Kotov
Summary: Self-assembled multicompartment supraparticles (mSPs) are formed from FeS2 nanoparticles (NPs) stabilized by l-cysteine. These mSPs contain approximately 340 interconnected compartments with an average size of approximately 5 nm, encapsulating biological cargo such as DNA. The temperature stability of the DNA cargo is enhanced compared to traditional delivery vehicles, making biomimetic compartmentalized particles a promising tool for various bioapplications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Medicinal
Prashant Kumar, Alexander Simon, Nicholas A. Kotov
Summary: Circularly polarized light interacts with biomolecules to generate spectral fingerprints reflecting their structure. Coupling biomolecules with noble metal plasmonic assemblies transfers the spectral features to visible and near-infrared regions. Nanoscale gold tetrahelices can detect chiral objects 40 times smaller in size using plane-polarized light. Chiral hotspots between tetrahelices differentiate between weakly scattering S- and R-molecules. Simulations show enantiomeric discrimination with selectivity up to 0.54.
Article
Multidisciplinary Sciences
Inho Song, Jaeyong Ahn, Hyungju Ahn, Sang Hyuk Lee, Jianguo Mei, Nicholas A. Kotov, Joon Hak Oh
Summary: In this study, a simple and powerful method was used to fabricate chiroptical flexible layers through supramolecular helical ordering of conjugated polymer chains. The multiscale chirality and optical activity of these layers can be varied across a broad spectral range by chiral templating. After template removal, chromophores remain in one-dimensional helical nanofibrils, producing a homogeneous chiroptical layer with drastically enhanced polarization-dependent absorbance, enabling well-resolved detection and visualization of the spin angular momentum (SAM) of photons. This study provides a scalable path towards on-chip detection of the spin degree of freedom of photons necessary for encoded quantum information processing and high-resolution polarization imaging.
Editorial Material
Multidisciplinary Sciences
Nicholas A. Kotov
NATIONAL SCIENCE REVIEW
(2023)
Editorial Material
Nanoscience & Nanotechnology
Jeanne Crassous, Matthew J. Fuchter, Danna E. Freedman, Nicholas A. Kotov, Jooho Moon, Matthew C. Beard, Sascha Feldmann
Summary: Solution-processable semiconductors based on small molecules, polymers or halide perovskites combine sustainable manufacturing with exceptional optoelectronic properties that can be chemically tailored to achieve flexible and highly efficient optoelectronic and photonic devices. A new exciting research direction is the study of the influence of chirality on light-matter interactions in these soft materials and its exploitation for the simultaneous control of charge, spin and light. In this Viewpoint, researchers working on different types of chiral semiconductors discuss the most interesting directions in this rapidly expanding field.
NATURE REVIEWS MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Paolo Elvati, Chloe Luyet, Yichun Wang, Changjiang Liu, J. Scott VanEpps, Nicholas A. Kotov, Angela Violi
Summary: This study focuses on the characterization of PSM alpha 1 amyloid nanofibers in Staphylococcus aureus biofilms. Computational and experimental techniques were used to develop a model for designing compounds to control amyloid formation. The research found that the amyloid nanofibers have a helical structure formed by two protofilaments, with an average diameter of about 12 nm and a left-handed helicity with a periodicity of approximately 72 nm.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Sung-Won Hwang, Chung-Man Lim, Cong Truc Huynh, Hossein Moghimianavval, Nicholas A. Kotov, Eben Alsberg, Allen P. Liu
Summary: This study presents a strategy to confer mechano-responsive behavior on hydrogels by embedding hybrid vesicles. Under mechanical stress, these vesicles release encapsulated compounds that control the hydrogel network, offering promise for diverse biomedical applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Editorial Material
Chemistry, Physical
Yu Chen, Gemma-Louise Davies, Anders Hagfeldt, Nicholas Kotov
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Multidisciplinary Sciences
Douglas G. Montjoy, Elizabeth A. K. Wilson, Harrison Hou, Joel D. Graves, Nicholas A. Kotov
Summary: By assembling spiky micro-nanoparticles of metal oxides into complex "hedgehog" particles (HPs) with enhanced dispersibility, effective photo-oxidation of liquid cyclohexane can be achieved, demonstrating the potential of these inorganic photocatalysts for "green" catalysis.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yuan Cao, Bingcheng Luo, Atif Javaid, Hong Ju Jung, Tao Ma, Chung-Man Lim, Ahmet Emre, Xiaohui Wang, Nicholas A. Kotov
Summary: This study investigates the mechanisms of charge storage in complex nanostructured materials using a model system of FeSe2 hedgehog particles (HPs). It was found that the HPs can accommodate a higher charge density and have improved charge storage capacity due to the hole transport and reversible atomic conformations of the FeSe2 layers. The dispersibility of the HPs also enables easy integration into energy storage devices.
