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| Open AccessStabilization of N6 and N8 anionic units and 2D polynitrogen layers in high-pressure scandium polynitrides
The authors discover high-pressure Sc2N6, Sc2N8, and ScN5 polynitrides, synthesized at high pressure and temperature conditions, featuring a unique nitrogen catenation and previously unknown N66− anions, N86− anions and anionic corrugated 2D-polynitrogen layers.
- Andrey Aslandukov
- , Alena Aslandukova
- & Leonid Dubrovinsky
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Article
| Open AccessTuning polymer-backbone coplanarity and conformational order to achieve high-performance printed all-polymer solar cells
All-polymer solar cells comprising both polymeric donors and acceptors offer better morphological and mechanical stability, and a broader processing window for printing. Here, the authors report a polymer acceptor based on bithiazole linker with more coplanar and ordered molecular conformation.
- Yilei Wu
- , Yue Yuan
- & Zhenan Bao
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Article
| Open AccessMolecular near-infrared triplet-triplet annihilation upconversion with eigen oxygen immunity
Molecular triplet-triplet upconversion is useful in a wide range of applications, but is limited by significant oxygen quenching. Here the authors report the combination of sensitiser and annihilator that is stable in aerated environments, and suitable for in vivo sensing.
- Xinyu Wang
- , Fangwei Ding
- & Guanying Chen
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Article
| Open AccessAbnormal thermally-stimulated dynamic organic phosphorescence
In thermally stimulated phosphorescent materials a thermal stimulus inevitably quenches the emission due to intensive non radiative transition. Here, the authors report an abnormal thermally stimulated phosphorescence behavior in organic phosphors and show enhancement of phosphorescence and change of the emission color upon temperature increase.
- He Wang
- , Huili Ma
- & Zhongfu An
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Article
| Open AccessSelenium substitution for dielectric constant improvement and hole-transfer acceleration in non-fullerene organic solar cells
Dielectric constant of non-fullerene acceptors plays a critical role in organic solar cells in terms of exciton dissociation and charge recombination. Here, authors report selenium substitution on central core of acceptors to improve dielectric constant, realizing devices with efficiency of 19.0%.
- Xinjun He
- , Feng Qi
- & Wallace C. H. Choy
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Article
| Open AccessReversible chirality inversion of an AuAgx-cysteine coordination polymer by pH change
Reactive chiral systems have attracted much attention in biology, optoelectronics, and photonics; however, a comprehensive understanding of these systems remains incomplete. Here the authors show the reversible chirality of AuAgx-cys coordination polymers induced by pH changes.
- Bing Ni
- , Dustin Vivod
- & Helmut Cölfen
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Article
| Open AccessWater-dispersible X-ray scintillators enabling coating and blending with polymer materials for multiple applications
Water dispersible X-ray scintillators are highly desirable for multiple application scenarios. Zhang et al report the synthesis of new X-ray scintillator nanocrystals anchored on the surface of water dispersible halloysite nanotubes, enabling radiation exposure monitoring, flexible scintillator screens, and information encryption.
- Hailei Zhang
- , Bo Zhang
- & Richard Hoogenboom
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Article
| Open AccessPrediction of highly stable 2D carbon allotropes based on azulenoid kekulene
Discovery of 2D materials with useful electronic properties is challenging. Here, the authors use DFT to design a stable semiconducting 2D carbon allotrope for optoelectronic applications that has light charge carriers and unusual secondary bandgap.
- Zhenzhe Zhang
- , Hanh D. M. Pham
- & Rustam Z. Khaliullin
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Article
| Open AccessColor construction of multi-colored carbon fibers using glucose
Color construction of black carbon fibers is a challenge due to their stable physicochemical properties. Here, the authors demonstrate the tunable structural color of carbon fibers endowed by the dynamic growth of carbon spheres using glucose.
- Sijie Zhou
- , Chunhua Zhang
- & Weilin Xu
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Article
| Open AccessTransient chemical and structural changes in graphene oxide during ripening
Graphene oxide is in demand for various applications - however, this is complicated by changing physicochemical properties over time. Here, the authors show the intrinsic, metastable, and transient states of graphene oxide colloids upon ripening.
- Hayato Otsuka
- , Koki Urita
- & Katsumi Kaneko
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Article
| Open AccessSelf-regulated reversal deformation and locomotion of structurally homogenous hydrogels subjected to constant light illumination
Environmentally adaptive hydrogels have great potential as soft robotics but achieving self-regulated reversal shape deformation in homogenous hydrogels under a constant stimulus is challenging. Here, the authors report responsive hydrogels functionalized with two photoswitchable spiropyrans that exhibit self-regulated transient deformation reversal when subjected to constant illumination.
- Kexin Guo
- , Xuehan Yang
- & Chuang Li
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Article
| Open AccessMechanically interlocked [c2]daisy chain backbone enabling advanced shape-memory polymeric materials
Mechanically interlocked structures in polymer backbones can give interesting functionality, but can be challenging to prepare and control. Here, the authors report the development of polymers with a daisy chain unit in the backbone that are capable of shape memory behaviour.
- Shang-Wu Zhou
- , Danlei Zhou
- & Da-Hui Qu
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Article
| Open AccessTunable afterglow for mechanical self-monitoring 3D printing structures
Organic afterglow materials have potential in self-monitoring applications but it is challenging to design materials with desired properties. Here, the authors report the development of a lifetime tunable organic afterglow system for use in mechanical self-monitoring 3D printed structures.
- Rongjuan Huang
- , Yunfei He
- & Wei Huang
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Article
| Open Access4D printed hydrogel scaffold with swelling-stiffening properties and programmable deformation for minimally invasive implantation
3D printing has potential in designing personalised scaffolds, but minimally invasive implantation is still challenging. Here, the authors report the development of a polyurethane material with temperature triggered shape memory and water triggered deformation that allows for transcatheter delivery.
- Bo Liu
- , Hui Li
- & Xiaoli Zhao
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Article
| Open AccessRationally designed nanotrap structures for efficient separation of rare earth elements over a single step
Extracting rare earth elements (REEs) from wastewater is essential for the growth of an eco-friendly sustainable economy but separating individual rare earth elements remains challenging. Here, the authors report a REE nanotrap that features dense uncoordinated carboxyl groups and triazole N atoms in a two-fold interpenetrated metalorganic framework which is highly responsive to the size variation of rareearth ions.
- Qing-Hua Hu
- , An-Min Song
- & Jian-Ding Qiu
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Article
| Open AccessHarmonic amide bond density as a game-changer for deciphering the crosslinking puzzle of polyamide
Relating the degree of network crosslinking as a descriptor to the desalination performance of crosslinked polymer membranes remains challenging. Here, the authors introduce a parameter based on distinct amide bonds per unit mass of polyamide, to unravel the relationship between the crosslinked networks of polyamide membranes and their desalination performance.
- Yu-Ren Xue
- , Chang Liu
- & Zhi-Kang Xu
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Article
| Open AccessComplexation-driven assembly of imine-linked helical receptors showing adaptive folding and temperature-dependent guest selection
The development of synthetic receptors capable of selectively binding monosaccharides is highly challenging. Here, authors present the efficient synthesis of these receptors based on foldamers, achieved through complexation-induced equilibrium shifting.
- Geunmoo Song
- , Seungwon Lee
- & Kyu-Sung Jeong
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Article
| Open AccessA high-current hydrogel generator with engineered mechanoionic asymmetry
Mechanoelectric energy conversion is a potential solution for the power supply of soft devices, but the low current output for low frequency motions limits its applicability. Here, the authors report a hydrogel generator with mechanoionic current generation amplified by orders of magnitudes and its application as controlled drug-releasing system for wound healing.
- Hongzhen Liu
- , Xianglin Ji
- & Lizhi Xu
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Article
| Open AccessCircular olefin copolymers made de novo from ethylene and α-olefins
Although several advances have been made in chemical Polyethylene (PE) re- and upcycling, energy-efficient and selective catalytic processes are still lacking. Here, the authors show coupling of an industrially relevant coordination copolymerization olefins with a functionalized chain-transfer agent, followed by modular assembly of the resulting telechelic polyolefin building blocks by polycondensation to afford ester-linked PE-based random and block copolymers which exhibit full chemical circularity.
- Xing-Wang Han
- , Xun Zhang
- & Yong Tang
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Article
| Open AccessA general supramolecular strategy for fabricating full-color-tunable thermally activated delayed fluorescence materials
Thermally activated delayed fluorescence materials with full-colour tunability are desirable but challenging to prepare. Here, the authors report a method for preparing such materials through the design of host-guest cocrystals with through-space charge transfer.
- Nan Xue
- , He-Ye Zhou
- & Chuan-Feng Chen
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Article
| Open AccessIn-situ formatting donor-acceptor polymer with giant dipole moment and ultrafast exciton separation
Donor-acceptor polymers have potential for application in photocatalysis, but often harsh synthetic conditions are required. Here, the authors report a post-synthetic method for conversion to donor-acceptor states, to give a polymer capable of enhancing photocatalytic hydrogen peroxide synthesis.
- Chang Cheng
- , Jiaguo Yu
- & Mietek Jaroniec
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Article
| Open AccessTough double network hydrogels with rapid self-reinforcement and low hysteresis based on highly entangled networks
Tough hydrogels commonly utilise energy dissipation mechanisms, but this can lead to challenges in achieving low hysteresis. Here, the authors report a hydrogel with a highly entangled double network that allows reversibility following stretching.
- Ruixin Zhu
- , Dandan Zhu
- & Xinling Wang
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Article
| Open AccessBiomimetic mercury immobilization by selenium functionalized polyphenylene sulfide fabric
The abatement of elemental mercury remains an enormous challenge for public health and ecosystems. Here, inspired by the seleno-mercury antagonism effect in biological systems, the authors developed an ideal Hg0 adsorbent with a record-high adsorption capacity of 1621.9 mg g−1.
- Hailong Li
- , Fanyue Meng
- & Jianping Yang
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Article
| Open AccessTwofold rigidity activates ultralong organic high-temperature phosphorescence
Obtaining high-temperature phosphorescence in organic materials can potentially lead to broader applications, but can be challenging to achieve. Here, the authors report the use of rigid molecules as both host and guest to give temperature resistance and therefore high-temperature phosphorescence.
- Kaijun Chen
- , Yongfeng Zhang
- & Xiang Ma
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Article
| Open AccessUltralight crystalline hybrid composite material for highly efficient sequestration of radioiodine
The development of effective adsorbents of radioiodine nuclear waste remains difficult due to the lack of proper material design strategies. Here the authors report an ultralight hierarchically porous crystalline multifunctional hybrid nanocomposite for ultrafast entrapment of iodine and polyiodide species under both static and dynamic condition.
- Sahel Fajal
- , Writakshi Mandal
- & Sujit K. Ghosh
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Article
| Open AccessRobust links in photoactive covalent organic frameworks enable effective photocatalytic reactions under harsh conditions
The development of heterogeneous photocatalysts applicable under harsh conditions is challenging. Here the authors report the conversion of imine linkages into quinoline groups in triphenylamine incorporated photosensitive covalent organic frameworks to develop robust heterogeneous photocatalysts for photocatalytic applications in harsh conditions.
- Jia-Rui Wang
- , Kepeng Song
- & Yanli Zhao
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Article
| Open AccessMelt-quenched carboxylate metal–organic framework glasses
Many MOFs feature carboxylate ligands with strong coordination bonds, hindering thermal melting. Here, authors present a meltable carboxylate MOF designed with a thermodynamically favored component.
- Minhyuk Kim
- , Hwa-Sub Lee
- & Hoi Ri Moon
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Article
| Open AccessLight-induced MOF synthesis enabling composite photothermal materials
Introduced here is a light-induced MOF synthesis, enabled by plasmonic nanoparticles. The method, proven to be rapid and efficient, can also promote the formation of a nanoparticle-MOF composite, imparting photothermal properties to the new material.
- Ofir Shelonchik
- , Nir Lemcoff
- & Yossi Weizmann
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Article
| Open AccessProgramming crack patterns with light in colloidal plasmonic films
Crack formation typically results in random patterns and material failure. Inspired by plant phototropism, the authors use plasmonic absorbers to control crack propagation in colloidal films with light, showcasing a robust, programmable self-assembly process.
- Fanny Thorimbert
- , Mateusz Odziomek
- & Marco Faustini
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| Open AccessRegulating protein corona on nanovesicles by glycosylated polyhydroxy polymer modification for efficient drug delivery
The dynamic protein corona hinders the uptake of nanocarriers in desired target cell populations, limiting their bench-to-bedside translation. Here the authors reveal that the modification of hydroxyl and amino functional groups on nanovesicles can rationally regulate the composition of protein coronas to improve the efficiency of targeted drug delivery.
- Yunqiu Miao
- , Lijun Li
- & Yong Gan
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Article
| Open AccessVisualizing the interfacial-layer-based epitaxial growth process toward organic core-shell architectures
Organic heterostructures with controlled geometry on the micro and nanoscale are important in nanotechnology, but epitaxial growth processes with high lattice mismatching are challenging to achieve. Here, the authors report a visualisation process for morphology evolution on epitaxial growth.
- Ming-Peng Zhuo
- , Xiao Wei
- & Liang-Sheng Liao
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Article
| Open AccessMulticompartmental coacervate-based protocell by spontaneous droplet evaporation
Coacervate-based compartments are attractive as potential protocells, but formation and control of the compartments can be challenging. Here, the authors report the spontaneous formation of core-shell, cell-sized coacervate compartments driven by droplet evaporation.
- Cheng Qi
- , Xudong Ma
- & Zhou Liu
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Article
| Open AccessUltra-stable and highly reactive colloidal gold nanoparticle catalysts protected using multi-dentate metal oxide nanoclusters
For catalytic nanoparticles there is often a trade-off between stability and activity. Here the authors report a route to ultra-stable and catalytically active colloidal small (~3 nm) gold nanoparticles using multi-dentate polyoxometalates as protecting agents in nonpolar solvents.
- Kang Xia
- , Takafumi Yatabe
- & Kosuke Suzuki
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Article
| Open AccessOptimizing potassium polysulfides for high performance potassium-sulfur batteries
Potassium-sulfur battery are promising materials for next-generation high energy, low cost batteries. Here the authors explore a tungsten based catalytic composite for optimizing potassium polysulfides and improve K-S electrochemistry in batteries
- Wanqing Song
- , Xinyi Yang
- & Wenbin Hu
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Article
| Open AccessUnderstanding the AIE phenomenon of nonconjugated rhodamine derivatives via aggregation-induced molecular conformation change
“Understanding the structure-property relationship of organic molecules which exhibit different properties upon aggregation is important for the field of material science. Here, the authors prepare nonconjugated rhodamine-based molecules without aggregation-induced emission building blocks yet displaying typical aggregation-induced emission behavior.”
- Lin-Lin Yang
- , Haoran Wang
- & Ben Zhong Tang
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Article
| Open AccessHydrogel dressings with intrinsic antibiofilm and antioxidative dual functionalities accelerate infected diabetic wound healing
Dressings for aiding in chronic wound healing can be beneficial, but often involve additional processes or leave residue. Here, the authors report a hydrogel dressing with antibiofilm and antioxidative properties for the treatment of infected diabetic wounds.
- Dicky Pranantyo
- , Chun Kiat Yeo
- & Mary B. Chan-Park
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Article
| Open AccessSelf-compliant ionic skin by leveraging hierarchical hydrogen bond association
Ionic skins have potential in long-term physiological monitoring, but do not always achieve a desirable balance of viscosity and elasticity. Here, the authors report a material with hierarchical topological entanglements allowing desirable viscoelastic properties.
- Huating Ye
- , Baohu Wu
- & Peiyi Wu
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Article
| Open AccessBioinspired light-driven chloride pump with helical porphyrin channels
Artificial ion channels have potential in a range of applications, but achieving performance comparable to biological channels has been challenging. Here, the authors report an artificial, light-driven chloride pump, inspired by halorhodopsin, with a helical porphyrin channel array.
- Chao Li
- , Yi Zhai
- & Lei Jiang
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Article
| Open AccessGenerating dual structurally and functionally skin-mimicking hydrogels by crosslinking cell-membrane compartments
It is desirable to be able to mimic the properties of skin with hydrogels, but challenging to achieve. Here, the authors report the use of functionalised extracellular vesicles as crosslinkers for skin-mimicking hydrogels with good mechanical strength.
- Feng Wu
- , Yusheng Ren
- & Yan Pang
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Article
| Open AccessThree-dimensional covalent organic frameworks with nia nets for efficient separation of benzene/cyclohexane mixtures
The synthesis of three-dimensional (3D) covalent organic frameworks (COFs) with highly connected building blocks presents a significant challenge. Here, the authors report the synthesis of two 3D COFs with the nia topology, by introducing planar hexagonal and triangular prism nodes.
- Jianhong Chang
- , Fengqian Chen
- & Qianrong Fang
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Article
| Open AccessUpcycling poly(succinates) with amines to N-substituted succinimides over succinimide anion-based ionic liquids
Ionic liquids have been employed in dissolution and chemical degradation of waste polymers. Here the authors report a cation-anion confined hydrogen-bonding catalysis strategy to deconstruct poly(succinates) into N-substituted succinimides over ionic liquids.
- Fengtian Wu
- , Yuepeng Wang
- & Zhimin Liu
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Article
| Open AccessA one-two punch targeting reactive oxygen species and fibril for rescuing Alzheimer’s disease
Toxic amyloid-beta plaque and harmful inflammation are two leading hallmarks of Alzheimer’s disease (AD), and precise AD therapy is elusive due to the lack of dual-targeting therapy function, limited blood-brain barrier penetration, and low imaging sensitivity. Here, the authors address these issues by designing a near-infrared-II aggregation-induced emission nanotheranostic for precise AD therapy.
- Jiefei Wang
- , Ping Shangguan
- & Ben Zhong Tang
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Article
| Open AccessSublimed C60 for efficient and repeatable perovskite-based solar cells
Batch-to-batch reproducibility of device performances is crucial for perovskite photovoltaics moving towards industrialization. Here, the authors show that commercial as-received C60 source materials may coalesce during repeated thermal evaporation processes, jeopardizing such reproducibility.
- Ahmed A. Said
- , Erkan Aydin
- & Stefaan De Wolf
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Article
| Open AccessSelf-encapsulated ionic fibers based on stress-induced adaptive phase transition for non-contact depth-of-field camouflage sensing
Fabrication methods for ionic conductive hydrogel fibers are challenged by complexity and poor stability. Using a stress-induced adaptive phase transition strategy, Liu et al. fabricate self-encapsulated hydrogel fibers for depth-of-field sensing applications in a sustainable, two-step process.
- Ying Liu
- , Chan Wang
- & Zhou Li
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Article
| Open AccessSelf-similar chiral organic molecular cages
To enhance the utility of organic molecular cages (OMCs), the evolution of OMCs into higher-level chiral OMCs with self-similar superstructures is meaningful yet challenging. Here, the authors report a pair of higher-level 3D tri-bladed chiral helical molecular cages, displaying self-similarity in a discrete self-similar superstructure at different levels.
- Zhen Wang
- , Qing-Pu Zhang
- & Chuan-Feng Chen
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Article
| Open AccessHydrogen-bonded organic frameworks in solution enables continuous and high-crystalline membranes
Hydrogen-bonded organic frameworks (HOFs) attract increasing attention as porous materials. Despite the widely studied solid-state properties, little research has been done on the solution state. Here, the authors demonstrate that HOFs fragment into small particles while maintaining their original assemblies upon dispersing in solvents.
- Qi Yin
- , Kuan Pang
- & Tian-Fu Liu
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Article
| Open AccessConnective tissue inspired elastomer-based hydrogel for artificial skin via radiation-indued penetrating polymerization
Robust hydrogels offer a promising solution for the development of artificial skin for bionic robots, yet few hydrogels have a comprehensive performance comparable to real human skin. Here, the authors present a general method to convert traditional elastomers into tough hydrogels via a unique radiation-induced penetrating polymerization method.
- Yuan Tian
- , Zhihao Wang
- & Yunlong Wang
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Article
| Open AccessSub-micro porous thin polymer membranes for discriminating H2 and CO2
The fabrication of polymeric membranes with high permeance and remarkable selectivity for simultaneous H2 purification and CO2 capture is challenging. Here, the authors design a polymer membrane with sub-micro pores via controlled transformation of amine-linked polymer films into benzimidazole- and amine-linked polymer layers.
- Xueru Yan
- , Tianqi Song
- & Xinlei Liu
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Article
| Open AccessReplicating shear-mediated self-assembly of spider silk through microfluidics
Native spider silk has desirable mechanical properties, but these are challenging to replicate in an artificial material. Here, the authors report the use of a microfluidic system to create continuous fibers based on recombinant spidroin.
- Jianming Chen
- , Arata Tsuchida
- & Keiji Numata