A general strategy for printing colloidal nanomaterials into one-dimensional micro/nanolines

Li, Yifan; Zhang, Zeying; Su, Meng; Huang, Zhandong; Li, Zheng; Li, Fengyu; Pan, Qi; Ren, Wanjie; Hu, Xiaotian; Li, Lihong; Song, Yanlin

doi:10.1039/c8nr06543h

“…[21] Specifically,t he PS nanoparticle suspension is carefully dropped onto asubstrate and covered with at emplate with microwalls.W ith the evaporation of solvent, the microwalls guide the directional shrinkage of the solid-liquid-gas three phase contact line on the substrate.This slipping motion of the three-phase contact line provides alimited space for nanoparticle assembly at the top of microwalls. [22] Thus,n anochains can be printed on the substrate.T he interparticle connections and the adhesion between the nanoparticles and the substrate are enhanced through thermal annealing below the glass transition temperature of nanoparticles.T hen, the specific antibodies are immobilized on the surface of nanochains for capturing target viruses. [23] Thev iral samples are directly dropped on the nanochains.The viruses binding to nanochains can change the color of scattering light.…”

Section: Resultsmentioning

confidence: 99%

Printed Nanochain‐Based Colorimetric Assay for Quantitative Virus Detection

Zhang

¹

,

Wang

²

,

Su

³

et al. 2021

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Fast and ultrasensitive detection of pathogens is very important for efficient monitoring and prevention of viral infections.H ere,w ed emonstrate al abel-free optical detection approach that uses aprinted nanochain assayfor colorimetric quantitative testing of viruses.T he antibody-modified nanochains have high activity and specificity which can rapidly identify target viruses directly from biofluids in 15 min, as well as differentiate their subtypes.A rising from the resonance induced near-field enhancement, the color of nanochains changes with the binding of viruses that are easily observed by asmartphone.W eachieve the detection limit of 1PFU mL À1 through optimizing the optical response of nanochains in visible region. Besides,itallows for real-time response to virus concentrations ranging from 0t o1 .0 10 5 PFU mL À1 .T his low-cost and portable platform is also applicable to rapid detection of other biomarkers,m aking it attractive for many clinical applications.

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“…Chemie top of microwalls. [22] Thus,n anochains can be printed on the substrate.T he interparticle connections and the adhesion between the nanoparticles and the substrate are enhanced through thermal annealing below the glass transition temperature of nanoparticles.T hen, the specific antibodies are immobilized on the surface of nanochains for capturing target viruses. [23] Thev iral samples are directly dropped on the nanochains.The viruses binding to nanochains can change the color of scattering light.…”

Section: Methodsmentioning

confidence: 99%

Printed Nanochain‐Based Colorimetric Assay for Quantitative Virus Detection

Zhang

¹

,

Wang

²

,

Su

³

et al. 2021

Self Cite

View full text Add to dashboard Cite

Fast and ultrasensitive detection of pathogens is very important for efficient monitoring and prevention of viral infections.H ere,w ed emonstrate al abel-free optical detection approach that uses aprinted nanochain assayfor colorimetric quantitative testing of viruses.T he antibody-modified nanochains have high activity and specificity which can rapidly identify target viruses directly from biofluids in 15 min, as well as differentiate their subtypes.A rising from the resonance induced near-field enhancement, the color of nanochains changes with the binding of viruses that are easily observed by asmartphone.W eachieve the detection limit of 1PFU mL À1 through optimizing the optical response of nanochains in visible region. Besides,itallows for real-time response to virus concentrations ranging from 0t o1 .0 10 5 PFU mL À1 .T his low-cost and portable platform is also applicable to rapid detection of other biomarkers,m aking it attractive for many clinical applications.

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“…Further, development in ink materials opened a new trending research for 3D and 4D printing: the development of colloidal nanoparticle ink for 3D printing functional devices. Zeng and Zhang compiled a comprehensive review of this colloidal nanoparticle ink for 1D-, 2D-, 3D-, and 4D-printing functional devices [132,133]. Thus, shear thinning as a required nature of ink limits smooth extrusion of bioink, such as biological hydrogels.…”

Section: Challenges and Future Perspectivementioning

confidence: 99%

Four-Dimensional Printing for Hydrogel: Theoretical Concept, 4D Materials, Shape-Morphing Way, and Future Perspectives

Imam

¹

,

Hussain

²

,

Altamimi

³

et al. 2021

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The limitations and challenges possessed in static 3D materials necessitated a new era of 4D shape-morphing constructs for wide applications in diverse fields of science. Shape-morphing behavior of 3D constructs over time is 4D design. Four-dimensional printing technology overcomes the static nature of 3D, improves substantial mechanical strength, and instills versatility and clinical and nonclinical functionality under set environmental conditions (physiological and artificial). Four-dimensional printing of hydrogel-forming materials possesses remarkable properties compared to other printing techniques and has emerged as the most established technique for drug delivery, disease diagnosis, tissue engineering, and biomedical application using shape-morphing materials (natural, synthetic, semisynthetic, and functionalized) in response to single or multiple stimuli. In this article, we addressed a fundamental concept of 4D-printing evolution, 4D printing of hydrogel, shape-morphing way, classification, and future challenges. Moreover, the study compiled a comparative analysis of 4D techniques, 4D products, and mechanical perspectives for their functionality and shape-morphing dynamics. Eventually, despite several advantages of 4D technology over 3D technique in hydrogel fabrication, there are still various challenges to address with using current advanced and sophisticated technology for rapid, safe, biocompatible, and clinical transformation from small-scale laboratory (lab-to-bed translation) to commercial scale.

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A general strategy for printing colloidal nanomaterials into one-dimensional micro/nanolines

Abstract: A general strategy is demonstrated to print nanomaterials into 1D micro/nanolines with a multilayer or monolayer stack with a single-nanoparticle width.

Cited by 20 publications

References 67 publications

Printed Nanochain‐Based Colorimetric Assay for Quantitative Virus Detection

Printed Nanochain‐Based Colorimetric Assay for Quantitative Virus Detection

Printed Nanochain‐Based Colorimetric Assay for Quantitative Virus Detection

Four-Dimensional Printing for Hydrogel: Theoretical Concept, 4D Materials, Shape-Morphing Way, and Future Perspectives

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