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  • 1
    In: Advanced Materials Technologies, Wiley, Vol. 6, No. 6 ( 2021-06)
    Abstract: Due to the suitable bandgap, superior chemical and physical properties, the β‐phase gallium oxide (β‐Ga 2 O 3 ) has the great potential to fabricate the deep ultraviolet solar‐blind photodetectors (DUV PDs). However, the low material quality, high material growth cost, and insufficient device performance, are urgently required to be solved for practical applications. In this work, by using a vacuumfree, low‐cost mist chemical vapor deposition method, the high quality β‐Ga 2 O 3 single crystal films are successfully heteroepitaxially grown on (0001) sapphire substrates. X‐ray diffraction and transmission electron microscopy measurements identify the heteroepitaxial relationship with (01) β‐Ga 2 O 3 ‖(0001) sapphire. At the optimal growth temperature of 800 °C, the film shows a high quality pure β‐Ga 2 O 3 phase with the small full width at half maximum of 0.71°. Furthermore, the metal–semiconductor–metal DUV PDs are fabricated based on such single crystal β‐Ga 2 O 3 films, which exhibit excellent photoelectric performance. A very high photoresponsivity 22 000 A W −1 under 254 nm light illumination, which corresponds to a quantum efficiency of 1.07 × 10 7 % and a high detectivity of 1.1 × 10 16 Jones, almost the highest ever reported. The low‐cost film heteroepitaxial growth method and the ultrahigh device performance pave an alternative way for the fabrication of high‐performance β‐Ga 2 O 3 solar‐blind DUV PDs.
    Type of Medium: Online Resource
    ISSN: 2365-709X , 2365-709X
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 2850995-X
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  • 2
    In: Advanced Materials, Wiley, Vol. 32, No. 47 ( 2020-11)
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 1474949-X
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  • 3
    In: Nano Select, Wiley, Vol. 2, No. 11 ( 2021-11), p. 2112-2120
    Abstract: Gallium Oxide (Ga 2 O 3 ) for solar‐blind photodetectors (PDs) has drawing increasing research interest in recent years because of its natural wide bandgap. However, the traditional material growth methods are always complicated and the corresponding PD performance is also not good enough. In this work, amorphous Ga 2 O 3 (a‐Ga 2 O 3 ) thin film grown by mist chemical deposition applied as solar blind deep ultraviolet phototransistors (PTs) is investigated for the first time, to solve the problem of high cost and time‐consuming by traditional methods. Bottom‐gate a‐Ga 2 O 3 three terminal thin film transistors (TFTs) are fabricated to boost their ultraviolet (UV) photodetection properties. Under the 254 nm UV illumination, the a‐Ga 2 O 3 PTs demonstrates a very high responsivity of 2300 AW −1 , external quantum efficiency of 1.12 × 10 6 % and detectivity of 1.87 × 10 14 Jones. Such field‐effect PTs with the ultrahigh performance address a significant step toward the feasibility and practicability of Ga 2 O 3 PDs in the future applications.
    Type of Medium: Online Resource
    ISSN: 2688-4011 , 2688-4011
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2021
    detail.hit.zdb_id: 3042763-0
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  • 4
    In: Advanced Materials, Wiley, Vol. 31, No. 15 ( 2019-04)
    Abstract: Smart dynamic regulation structured surfaces, inspired by nature, which can dynamically change their surface topographies under external stimuli for convertible fluidic and optical properties, have recently motivated significant interest for scientific research and industrial applications. However, there is still high demand for the development of multifunctional dynamically transformable surfaces using facile preparation strategies. In this work, a type of Janus high‐aspect‐ratio magnetically responsive microplates array (HAR‐MMA) is readily fabricated by integrating a flexible laser scanning strategy, smart shape‐memory‐polymer‐based soft transfer, and a simple surface treatment. By applying external magnetic field, instantaneous and reversible deformation of Janus HAR‐MMA can be actuated, so surface wettability can be reversibly switched between superhydrophobic (158°) and hydrophilic (40°) states, based on which a novel magnetically responsive water droplet switch can be realized. Moreover, inspired by the biological assimilatory coloration of chameleons, dynamically color conversion can be skillfully realized by applying different colors on each side of the Janus HAR‐MMA. Finally, as a proof‐of‐concept demonstration in light manipulation, a HAR‐MMA is applied as an optical shutter actuated by external magnetic field with eximious controllability and repeatability. The developed multifunctional HAR‐MMA provides a versatile platform for microfluidic, biomedical, and optical applications.
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 1474949-X
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  • 5
    In: Advanced Materials, Wiley, Vol. 32, No. 9 ( 2020-03)
    Abstract: Although biomimetic virus‐like strategies have been widely used in antitumor applications, construction of uniquely shaped virus‐like agents and optimization of their specific morphological features to achieve diverse antitumor functions are worthwhile pursuits. Here, a novel strategy to construct an artificial tobacco mosaic virus (ATMV) that closely mimics the structure of the rod‐like tobacco mosaic virus (TMV) is developed. The supramolecular array is self‐assembled from small, repeated subunits of tailor‐made capsid‐mimicking dendrons onto RGD‐modified single‐walled carbon nanotube to construct the ATMVs with high structural stability. The ATMVs are tactfully designed with shielding, targeting, and arming approaches, including shielding the viruses against premature elimination, selectively targeting tumor tissue, and arming the viruses with oncolytic abilities. The elongated particles are concealed in blood until they arrived at a tumor site, then they induce robust composite oncolytic processes including cytomembrane penetration, endoplasmic reticulum disruption to cause Ca 2+ release, chemotherapeutic delivery, and photothermal therapy. Excitingly, the ATMVs not only lyse primary infected cells, but permeate adjacent cells for secondary infection, spreading cell‐to‐cell and continuing to induce lysis even deep in solid tumors. This work inspires a uniquely shaped virus‐like agent with tactically optimized oncolytic functions that completely defeated large drug‐resistant colon tumor (LoVo/Adr, ≈500 mm 3 ).
    Type of Medium: Online Resource
    ISSN: 0935-9648 , 1521-4095
    URL: Issue
    RVK:
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 1474949-X
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  • 6
    In: Genes, Chromosomes and Cancer, Wiley, Vol. 54, No. 3 ( 2015-03), p. 168-176
    Abstract: To recommend a reliable and clinically realistic RET/PTC rearrangement detection assay for papillary thyroid carcinoma (PTC), we compared multiplex quantitative polymerase chain reaction (qPCR), fluorescence in situ hybridization (FISH), and immunohistochemistry (IHC). RET/PTC rearrangement was detected using either RET break‐apart FISH followed by multicolor FISH to confirm CCDC6/RET or NCOA4/RET fusions, or by multiplex qPCR to detect 14 RET/PTC subtypes with simultaneous RET mRNA expression. RET protein expression was detected by IHC. The specificity and sensitivity of multiplex qPCR and IHC were calculated using break‐apart FISH as a reference. Among 73 PTC patients with sufficient tissue available for FISH and multiplex qPCR, 10 cases were defined as RET/PTC positive by both assays, including eight CCDC6/RET and two NCOA4/RET fusions with relatively high RET mRNA. In addition, multiplex qPCR identified another two CCDC6/RET fusion positive cases, but with low RET mRNA expression. IHC staining identified 11 RET positive cases among 39 patients with available samples. In comparison to FISH, multiplex qPCR displayed 100% sensitivity and 97% specificity to detect RET/PTC fusions, while IHC was neither sensitive nor specific. Our data reveal that both multiplex qPCR and FISH assays are equally applicable for detection of RET/PTC rearrangements. Break‐apart FISH methodology is highly recommended for the wider screening of RET rearrangements (regardless of partner genes), while multiplex qPCR is preferred to identify all known fusion types using one assay, provided mRNA expression is also measured. IHC analysis could potentially provide an additional method of fusion detection dependent on further optimization of assay conditions and scoring cutoffs. © 2014 Wiley Periodicals, Inc.
    Type of Medium: Online Resource
    ISSN: 1045-2257 , 1098-2264
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2015
    detail.hit.zdb_id: 1018988-9
    detail.hit.zdb_id: 1492641-6
    SSG: 12
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  • 7
    In: Energy Technology, Wiley, Vol. 11, No. 6 ( 2023-06)
    Abstract: Lithium–sulfur battery has high theoretical energy density (2600 Wh kg −1 ) and specific capacity (1675 mAh g −1 ), which is the research hotspot of next‐generation high‐energy‐density energy storage systems. In order to make the actual energy density of the battery closer to the theoretical value, it is necessary to increase the proportion of active substances as much as possible, but this will lead to the increase of the thickness of the electrode and affect the transport of ions inside the electrode. A new NH 4 HCO 3 template to help solve the above problem is proposed. A large number of efficient ion transport channels are generated in ultrathick cathodes. The discharge capacity of the primary button battery reaches 1500 mAh g −1 at the rate of 0.005C. Meanwhile, the actual gravimetric and volumetric energy density of the primary pouch cell are 645 Wh kg −1 and 952 Wh L −1 . The special cathode structure makes it easier for the electrolyte to penetrate the thick cathode, and makes the ion transport faster, which is the reason for the excellent performance of the battery. The work provides an effective way to improve the performance of high‐loaded sulfur cathode, enabling the commercialization of high‐specific energy Li–S batteries.
    Type of Medium: Online Resource
    ISSN: 2194-4288 , 2194-4296
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2700412-0
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  • 8
    Online Resource
    Online Resource
    Wiley ; 2023
    In:  Advanced Science Vol. 10, No. 23 ( 2023-08)
    In: Advanced Science, Wiley, Vol. 10, No. 23 ( 2023-08)
    Abstract: Photoacoustic microscopy can image many biological molecules and nano‐agents in vivo via low‐scattering ultrasonic sensing. Insufficient sensitivity is a long‐standing obstacle for imaging low‐absorbing chromophores with less photobleaching or toxicity, reduced perturbation to delicate organs, and more choices of low‐power lasers. Here, the photoacoustic probe design is collaboratively optimized and a spectral‐spatial filter is implemented. A multi‐spectral super‐low‐dose photoacoustic microscopy (SLD‐PAM) is presented that improves the sensitivity by ≈33 times. SLD‐PAM can visualize microvessels and quantify oxygen saturation in vivo with ≈1% of the maximum permissible exposure, dramatically reducing potential phototoxicity or perturbation to normal tissue function, especially in imaging of delicate tissues, such as the eye and the brain. Capitalizing on the high sensitivity, direct imaging of deoxyhemoglobin concentration is achieved without spectral unmixing, avoiding wavelength‐dependent errors and computational noises. With reduced laser power, SLD‐PAM can reduce photobleaching by ≈85%. It is also demonstrated that SLD‐PAM achieves similar molecular imaging quality using 80% fewer contrast agents. Therefore, SLD‐PAM enables the use of a broader range of low‐absorbing nano‐agents, small molecules, and genetically encoded biomarkers, as well as more types of low‐power light sources in wide spectra. It is believed that SLD‐PAM offers a powerful tool for anatomical, functional, and molecular imaging.
    Type of Medium: Online Resource
    ISSN: 2198-3844 , 2198-3844
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2808093-2
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  • 9
    In: Advanced Optical Materials, Wiley, Vol. 8, No. 2 ( 2020-01)
    Abstract: A transferable GaN epilayer is grown on an improved aluminum nitride (AlN)/graphene composite substrate. In this study, theoretical calculations using first‐principles calculations based on density functional theory are carefully conducted to further examine the formation mechanism of AlN on graphene. AlN selectively grows on graphene via its optimal nucleation site, which leads to the selective nucleation of AlN on graphene via quasi‐van der Waals epitaxy. Thus, an AlN composite nucleation layer is innovatively inserted between graphene and GaN, using the time‐distributed and constant‐pressure growth method by metal organic chemical vapor deposition. Moreover, a high‐quality GaN epilayer can be grown while ensuring the successful exfoliation of GaN by overcoming weak van der Waals forces between the graphene and the epilayer. The as‐fabricated violet light‐emitting diodes (LEDs) deliver an ultrahigh light output power. This method demonstrates the possibility of achieving a high‐quality vertical structure for LEDs and the ability to mechanically transfer to achieve flexible lighting.
    Type of Medium: Online Resource
    ISSN: 2195-1071 , 2195-1071
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2708158-8
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  • 10
    Online Resource
    Online Resource
    Wiley ; 2019
    In:  ENERGY & ENVIRONMENTAL MATERIALS Vol. 2, No. 1 ( 2019-03), p. 38-54
    In: ENERGY & ENVIRONMENTAL MATERIALS, Wiley, Vol. 2, No. 1 ( 2019-03), p. 38-54
    Abstract: Nanocrystals provide a variety of size and shape‐dependent properties with applications in a wide range of areas, gaining much attention in the past few years. However, due to the nature of the kinetic nanocrystal growth, the procedures often require strict experimental conditions and the shape and size of nanocrystals are difficult to control. In such context, organic templates, which are artificially modified or synthesized, can direct inorganic nanocrystal nucleation and growth to achieve desired shape, size and ultimately properties. In this review article, two general categories of organic templates used for making inorganic nanomaterials are discussed: biotemplates (e.g., peptide, lipid, DNA, and capsid) and block copolymer templates (e.g., block copolymer micelles, star‐like block copolymer unimicelles). The goal of this review is to bridge these gaps and help foster a greater awareness of the range and applicability of different organic templating techniques within the field of nanotechnology.
    Type of Medium: Online Resource
    ISSN: 2575-0356 , 2575-0356
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 2945579-0
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