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  • 1
    Online Resource
    Online Resource
    3D Strain Measurement of Heterostructures Using the Scanning Transmission Electron Microscopy Moiré Depth Sectioning Method
    Wiley ; 2023
    In:  Small Methods Vol. 7, No. 9 ( 2023-09)
    Details
    In: Small Methods, Wiley, Vol. 7, No. 9 ( 2023-09)
    Abstract: The mechanical properties of micro‐ and nanoscale materials directly determine the reliability of heterostructures, microstructures, and microdevices. Therefore, an accurate evaluation of the 3D strain field at the nanoscale is important. In this study, a scanning transmission electron microscopy (STEM) moiré depth sectioning method is proposed. By optimizing the scanning parameters of electron probes at different depths of the material, the sequence STEM moiré fringes (STEM‐MFs) with a large field of view, which can be hundreds of nanometers obtained. Then, the 3D STEM moiré information constructed. To some extent, multi‐scale 3D strain field measurements from nanometer to the submicrometer scale actualized. The 3D strain field near the heterostructure interface and single dislocation accurately measured by the developed method.
    Type of Medium: Online Resource
    ISSN: 2366-9608 , 2366-9608
    URL: Issue
    URL: Article
    DOI: 10.1002/smtd.v7.9
    DOI: 10.1002/smtd.202300107
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2884448-8
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  • 2
    Online Resource
    Online Resource
    Network structure and mechanical properties of hydrophobic association hydrogels: Surfactant effect I
    Wiley ; 2015
    In:  Journal of Applied Polymer Science Vol. 132, No. 1 ( 2015-01-05)
    Details
    In: Journal of Applied Polymer Science, Wiley, Vol. 132, No. 1 ( 2015-01-05)
    Abstract: Three series hydrophobic association hydrogels (HA‐gels) with different concentration of sodium dodecyl sulfate (SDS) were prepared by free radical micellar copolymerization. The backbone of HA‐gels was based on the copolymer of acrylamide and a little octylphenol polyoxyethylene ether acrylate with 10 ethoxyl units (OP10∼AC). Their mechanical properties were determined by tension tests. It was found that the properties of all three series HA‐gels presented a very similar variation tendency with increasing R, the molar ratio of SDS to OP10∼AC. In the medium region of R (around 1.23), higher effective crosslinked density and proper match between shorter and longer chains were achieved, so that the HA‐gels exhibited better mechanical strengths. In lower R region, it is prone to form the unstable aggregation of OP10∼AC with little SDS, while in higher R region some of co‐micelles could not act as crosslinkers. Both would reduce the effective crosslinked density and the mechanical strength of HA‐gel. In the condition of fixed R , the change of OP10∼AC content would remodel the topological structure of network. The HA‐gels with better properties could be obtained as the OP10∼AC content was varied from 1 to 2% at the proper R . © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41222.
    Type of Medium: Online Resource
    ISSN: 0021-8995 , 1097-4628
    URL: Issue
    URL: Article
    DOI: 10.1002/app.v132.1
    DOI: 10.1002/app.41222
    Language: English
    Publisher: Wiley
    Publication Date: 2015
    detail.hit.zdb_id: 1491105-X
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  • 3
    Online Resource
    Online Resource
    A Flexible Reversible Material Curing at Room Temperature Based on Diels‐Alder Reversible Reaction Characteristics
    Wiley ; 2018
    In:  ChemistrySelect Vol. 3, No. 43 ( 2018-11-23), p. 12383-12388
    Details
    In: ChemistrySelect, Wiley, Vol. 3, No. 43 ( 2018-11-23), p. 12383-12388
    Abstract: Reversible materials have been extensively studied for their good application potential. In this work, a series of materials with thermal reversible properties were synthesized by Diels‐Alder (DA) reaction of furan/BMI. The main structure of the thermoreversible polymer was poly (propylene glycol) diglycidyl ether (PPGGE) which was chain‐extended by furfurylamine. Bismaleimide (BMI) was set as crosslinking agent. The conversion rates of DA reaction and retro‐DA reaction were calculated by Fourier Transform Infrared Spectroscopy. The material could react quickly at room temperature and achieve high conversion rate to 90%. Differential Scanning Calorimetry and Thermogravimetric Analysis were used to study the thermal properties of the materials, and the obvious reversible transformation temperature of the materials occurred in the range of 90 °C to 120 °C. The thermomechanical properties and tensile properties of the materials were obtained by DMA and tensile tests, respectively. Compared to the previous studies, these materials exhibited a relatively high breaking elongation of 230%.
    Type of Medium: Online Resource
    ISSN: 2365-6549 , 2365-6549
    URL: Issue
    URL: Article
    DOI: 10.1002/slct.v3.43
    DOI: 10.1002/slct.201802907
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 2844262-3
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  • 4
    Online Resource
    Online Resource
    Inversion Boundary Annihilation in GaAs Monolithically Grown on On‐Axis Silicon (001)
    Wiley ; 2020
    In:  Advanced Optical Materials Vol. 8, No. 22 ( 2020-11)
    Details
    In: Advanced Optical Materials, Wiley, Vol. 8, No. 22 ( 2020-11)
    Abstract: Monolithic integration of III–V materials and devices on CMOS compatible on‐axis Si (001) substrates enables a route of low‐cost and high‐density Si‐based photonic integrated circuits. Inversion boundaries (IBs) are defects that arise from the interface between III–V materials and Si, which makes it almost impossible to produce high‐quality III–V devices on Si. In this paper, a novel technique to achieve IB‐free GaAs monolithically grown on on‐axis Si (001) substrates by realizing the alternating straight and meandering single atomic steps on Si surface has been demonstrated without the use of double Si atomic steps, which was previously believed to be the key for IB‐free III–V growth on Si. The periodic straight and meandering single atomic steps on Si surface are results of high‐temperature annealing of Si buffer layer. Furthermore, an electronically pumped quantum‐dot laser has been demonstrated on this IB‐free GaAs/Si platform with a maximum operating temperature of 120 °C. These results can be a major step towards monolithic integration of III–V materials and devices with the mature CMOS technology.
    Type of Medium: Online Resource
    ISSN: 2195-1071 , 2195-1071
    URL: Issue
    URL: Article
    DOI: 10.1002/adom.v8.22
    DOI: 10.1002/adom.202000970
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2708158-8
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  • 5
    Online Resource
    Online Resource
    Mechanism of peptide absorption in the isolated forestomach epithelial cells of dairy cows
    Wiley ; 2019
    In:  Journal of the Science of Food and Agriculture Vol. 99, No. 1 ( 2019-01-15), p. 100-108
    Details
    In: Journal of the Science of Food and Agriculture, Wiley, Vol. 99, No. 1 ( 2019-01-15), p. 100-108
    Abstract: Peptide absorption from the forestomach plays a vital role in protein nutrition of dairy cows. This study was conducted to investigate the mechanism of dipeptide absorption in the forestomach of dairy cows using isolated omasal epithelial cells (OECs) and ruminal epithelial cells (RECs). RESULTS Compared with RECs, the OECs formed a less tight monolayer, but had greater ability to transport glycylsarcosine (Gly‐Sar) ( P   〈  0.05). The OEC monolayers were immunopositive for the antibodies of anti‐junction proteins. Gly‐Sar transport was significantly greater at 37 °C than that at 4 °C, with an optimal pH of 6.0–6.5, and was decreased significantly by diethylpyrocarbonate and dipeptide Met‐Gly ( P   〈  0.05). The apical‐to‐basolateral transport was significantly greater than basolateral‐to‐apical transport ( P   〈  0.05). Knockdown of peptide transporter 1 (PepT1) resulted in less Gly‐Sar uptake in OECs, whereas overexpression of PepT1 in OECs resulted in higher Gly‐Sar uptake ( P   〈  0.05). Additionally, the expression of PepT1 was upregulated by the treatment with various dipeptides ( P   〈  0.05). CONCLUSION The OECs have a greater ability to transport Gly‐Sar than RECs do. Both passive and active routes are involved in the process of Gly‐Sar absorption in the isolated cultured forestomach epithelial cells from dairy cows. © 2018 Society of Chemical Industry
    Type of Medium: Online Resource
    ISSN: 0022-5142 , 1097-0010
    URL: Issue
    URL: Article
    DOI: 10.1002/jsfa.2019.99.issue-1
    DOI: 10.1002/jsfa.9148
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 2001807-1
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  • 6
    Online Resource
    Online Resource
    Syntenic quantitative trait loci and genomic divergence for Sclerotinia resistance and flowering time in Brassica napus
    Wiley ; 2019
    In:  Journal of Integrative Plant Biology Vol. 61, No. 1 ( 2019-01), p. 75-88
    Details
    In: Journal of Integrative Plant Biology, Wiley, Vol. 61, No. 1 ( 2019-01), p. 75-88
    Abstract: Oilseed rape ( Brassica napus ) is an allotetraploid with two subgenomes descended from a common ancestor. Accordingly, its genome contains syntenic regions with many duplicate genes, some of which may have retained their original functions, whereas others may have diverged. Here, we mapped quantitative trait loci (QTL) for stem rot resistance (SRR), a disease caused by the fungus Sclerotinia sclerotiorum , and flowering time (FT) in a recombinant inbred line population. The population was genotyped using B. napus 60K single nucleotide polymorphism arrays and phenotyped in six (FT) and nine (SSR) experimental conditions or environments. In total, we detected 30 SRR QTL and 22 FT QTL and show that some of the major QTL associated with these two traits were co‐localized, suggesting a genetic linkage between them. Two SRR QTL on chromosome A2 and two on chromosome C2 were shown to be syntenic, suggesting the functional conservation of these regions. We used the syntenic properties of the genomic regions to exclude genes for selection candidates responsible for QTL‐associated traits. For example, 152 of the 185 genes could be excluded from a syntenic A2–C2 region. These findings will help to elucidate polyploid genomics in future studies, in addition to providing useful information for B. napus breeding programs.
    Type of Medium: Online Resource
    ISSN: 1672-9072 , 1744-7909
    URL: Issue
    URL: Article
    DOI: 10.1111/jipb.v61.1
    DOI: 10.1111/jipb.12754
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 2130095-1
    SSG: 12
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  • 7
    Online Resource
    Online Resource
    Highly Strong and Tough Double‐Crosslinked Hydrogel Electrolyte for Flexible Supercapacitors
    Wiley ; 2020
    In:  ChemElectroChem Vol. 7, No. 4 ( 2020-02-17), p. 1007-1015
    Details
    In: ChemElectroChem, Wiley, Vol. 7, No. 4 ( 2020-02-17), p. 1007-1015
    Abstract: Excellent mechanical properties are indispensable for the wide application of supercapacitors and various wearable devices. In this article, a novel double‐crosslinked hydrogel electrolyte (DC‐GPE) is prepared by the combination of the hydrophobic association of acrylamide with the amphiphilic monomer AEO‐9‐AC and the ionic complexation of acrylic acid with Fe 3+ for the first time by a two‐step method. Owing to the dual energy dissipation network, the DC‐GPE exhibits an excellent tensile strength of up to 3.1 MPa, an elongation at break of more than 900 % and a toughness of 18.1 MJ m −3 , which is far beyond the currently reported hydrogel electrolyte. Moreover, the ionic conductivity of the DC‐GPE achieves as high as 40.1 mS cm −1 , which is 3 times higher than the corresponding LiClO 4 solution electrolyte (12.3 mS cm −1 ). Besides, the activated carbon‐based supercapacitor assembled by the DC‐GPE shows excellent electrochemical performance, which is superior to most activated carbon‐based supercapacitors. These results demonstrate that the DC‐GPE shows a great application prospect in wearable devices like supercapacitors. Significantly, the new dual physical cross‐linking strategy improves the contradiction between the strength and the toughness of the gel electrolyte materials. And provides a new solution for preparing high‐strength as well as high‐toughness gel electrolyte.
    Type of Medium: Online Resource
    ISSN: 2196-0216 , 2196-0216
    URL: Issue
    URL: Article
    DOI: 10.1002/celc.v7.4
    DOI: 10.1002/celc.201902134
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2724978-5
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  • 8
    Online Resource
    Online Resource
    Study on the morphology in composite emulsion particles produced by seed emulsion polymerization
    Wiley ; 1996
    In:  Macromolecular Chemistry and Physics Vol. 197, No. 8 ( 1996-8), p. 2447-2453
    Details
    In: Macromolecular Chemistry and Physics, Wiley, Vol. 197, No. 8 ( 1996-8), p. 2447-2453
    Type of Medium: Online Resource
    ISSN: 1022-1352 , 1521-3935
    URL: Article
    DOI: 10.1002/macp.1996.021970808
    RVK:
    VA 5810
    Language: Unknown
    Publisher: Wiley
    Publication Date: 1996
    detail.hit.zdb_id: 1475026-0
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  • 9
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    Online Resource
    Recyclable biobased materials based on Diels–Alder cycloaddition
    Wiley ; 2019
    In:  Journal of Applied Polymer Science Vol. 136, No. 18 ( 2019-05-10)
    Details
    In: Journal of Applied Polymer Science, Wiley, Vol. 136, No. 18 ( 2019-05-10)
    Abstract: Poly(ethylene glycol) diglycidyl ether‐furfurylamine (PGFA) containing pendant furan was synthesized, and a series of crosslinked materials with thermally reversible capacity were synthesized through a furan/maleimide Diels–Alder (DA) reaction between PGFA and bismaleimide (BMI). The kinetics of the PGFA/BMI DA reaction were studied by Fourier transform infrared spectroscopy (FTIR). The reaction conversion rate, the reaction rate constant, and the energy of the DA reaction at different temperatures were calculated. In addition, the retro Diels–Alder (rDA) reaction was studied via 1 H‐NMR, differential scanning calorimetry, and in situ FTIR. The occurrence of the retro DA reaction has been characterized clearly. Finally, the mechanical properties of the materials were obtained by dynamic mechanical and tensile tests. The storage modulus decreased obviously when the temperature reached over 90 °C, which proved that the materials were thermally reversible at high temperature. By changing the proportion of the crosslinking agent BMI, the best‐performing materials were obtained, and the properties of the materials were basically unchanged after recycling. Thus we have obtained an excellent reusable material. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47352.
    Type of Medium: Online Resource
    ISSN: 0021-8995 , 1097-4628
    URL: Issue
    URL: Article
    DOI: 10.1002/app.v136.18
    DOI: 10.1002/app.47352
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 1491105-X
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  • 10
    Online Resource
    Online Resource
    Construction and Properties of Hydrophobic Association Hydrogels with High Mechanical Strength and Reforming Capability
    Wiley ; 2009
    In:  Macromolecular Materials and Engineering Vol. 294, No. 12 ( 2009-12-10), p. 815-820
    Details
    In: Macromolecular Materials and Engineering, Wiley, Vol. 294, No. 12 ( 2009-12-10), p. 815-820
    Abstract: Hydrophobic association hydrogels (HA‐gels) with almost ideal properties were successfully prepared by micellar copolymerization, and the associated micelles acted as physical cross‐linking points in the network of HA‐gels. HA‐gels exhibit exceptional mechanical properties and transparency. However, the most striking properties are that HA‐gels possess the capability of self‐healing and remolding, which is mainly due to the dissociation and re‐association process of the associated micelles. Dried‐gels, which were prepared by stretching HA‐gels to a certain elongation for a period of time in the air, can be used as shrinkable or thermal sensitivity materials. HA‐gels have a broad selectivity for components, so we have synthesized HA‐gels with variously available properties by changing a corresponding component: thermoresponsive HA‐gels, nanosphere‐composite HA‐gels, and fluorescent HA‐gels. Therefore, we are sure that HA‐gels will be widely used in various fields, such as biology, medication, sensors, optics, and oil exploitation. magnified image
    Type of Medium: Online Resource
    ISSN: 1438-7492 , 1439-2054
    URL: Issue
    URL: Article
    DOI: 10.1002/mame.v294:12
    DOI: 10.1002/mame.200900160
    Language: English
    Publisher: Wiley
    Publication Date: 2009
    detail.hit.zdb_id: 2004372-7
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