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Huixiang Sheng

Bio: Huixiang Sheng is an academic researcher from Nanjing Tech University. The author has contributed to research in topics: Materials science & Plasmon. The author has an hindex of 2, co-authored 4 publications receiving 9 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper , the authors developed an electronic smart band-aid, which endows traditional bandaid new functionalities, by simply coating the traditional band bandaid with silver nanowire network and polytetrafluoroethylene/polydimethylsiloxane mixture.

28 citations

Journal ArticleDOI
10 Mar 2021-ACS Nano
TL;DR: In this paper, a method for exfoliation of the 2H phase molybdenum disulfide (2H-MoS2) deposited on an indium tin oxide (ITO) surface is presented.
Abstract: Single and a few atomic-layer molybdenum disulfide (MoS2) is a promising material in the fields of hydrogen generation, battery, supercapacitor, and environmental protection, owing to the outstanding electronic, optical, and catalytic properties. Although many approaches have been developed for exfoliation of MoS2 sheets, it is still essential to develop simple, convenient, and environmental friendly exfoliation methods. More importantly, the microscopic exfoliation process and the mechanism are still not clear, limiting a deeper understanding of the exfoliation. Herein, we develop a convenient and clean method for exfoliation of the 2H phase MoS2 (2H-MoS2) deposited on an indium tin oxide (ITO) surface. Importantly, the exfoliation process is observed directly and continuously under an optical microscope to reveal the detailed exfoliation process and mechanism. As illustrated, the light illumination triggers the exfoliation of the 2H-MoS2 sheets, and the presence of water is essential in this exfoliation process. The light intensity and wavelength, humidity, and bias all affect the exfoliation process obviously. The exfoliation is caused by the vaporization of the water molecules intercalated in 2H-MoS2 interlayers. By using this method, 2H-MoS2 nanosheets with different thicknesses are prepared on the ITO substrate, and microscopic catalysis mapping of the exfoliated sheets is demonstrated with single-molecule fluorescence microscopy, revealing that the prepared thin-layer 2H-MoS2 nanosheets show improved electrocatalysis activity (roughly 20 times). Our work will not only help deepen the understanding of exfoliation process of two-dimensional nanosheets but also provide an effective tool for the in situ study of various properties of the exfoliated sheets.

17 citations

Journal ArticleDOI
TL;DR: A comprehensive and timely review on surface plasmonic nanostructures can be found in this article, where the authors summarized the principle of surface plasmons and its contribution in the growth, etching, and phase transition of inorganic nanocrystals.

15 citations

Journal ArticleDOI
TL;DR: In this paper , a flexible and skin-attachable colorimetric sweat sensor for multiplexed analysis is developed using a simple, cost-effective, and convenient method, which can be used to simultaneously detect glucose, lactate, urea, and pH value in sweat, as well as sweat loss and skin temperature.
Abstract: In situ analysis of sweat provides a simple, convenient, cost-effective, and noninvasive approach for the early diagnosis of physical illness in humans and is particularly useful in family care. In this study, a flexible and skin-attachable colorimetric sweat sensor for multiplexed analysis is developed using a simple, cost-effective, and convenient method. The obtained sweat sensor can be used to simultaneously detect glucose, lactate, urea, and pH value in sweat, as well as sweat loss and skin temperature. Only 2.5 μL of sweat is enough for the whole test, and the sweat loss and chemical-sensing results can be read out conveniently by naked eyes or a smartphone. In addition, body temperature can also be detected with an additional electrical circuit. Our sweat sensor provides a new, cost-effective, and convenient approach for in vitro diagnosis of multiple components in sweat, and the easy fabrication and cost-effectiveness make our sensor commercializable in the near future.

12 citations

Journal ArticleDOI
TL;DR: In this article , using in situ Raman spectroscopy, the coadsorption of p-hydroxythiophenol (PHTP) molecules significantly accelerates the plasmon-mediated decarboxylation reaction of P-mercaptobenzoic acid adsorbed on silver nanoparticles.
Abstract: Surface plasmons have received much attention in chemical reactions because of their high light-utilizing efficiency, high reaction rate, and mild reaction conditions. However, the potential of plasmonic photochemistry has not been fully exploited, mainly due to the limited lifetime of plasmon-generated hot carriers. Herein, using in situ Raman spectroscopy, we reveal that the coadsorption of p-hydroxythiophenol (PHTP) molecules significantly accelerates the plasmon-mediated decarboxylation reaction of p-mercaptobenzoic acid adsorbed on silver nanoparticles. The observed boosting of the decarboxylation reaction is attributed to the matched energy distribution of the plasmon-generated hot electrons to the lowest unoccupied molecular orbital (LUMO) level of the coadsorbed PHTP molecules. Our findings will help not only to deepen the understanding of the plasmon-mediated chemical reactions but also to fabricate highly efficient plasmonic catalysts conveniently and cost-effectively.

8 citations


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TL;DR: In this article, the authors introduced chirality to plasmonic nanostructures by using circularly polarized light as the sole chiral source for the first time, which resulted in a wide variety of advanced technologies including image display, data storage, light management including negative refraction, and enantioselective catalysis and sensing.
Abstract: The chirality of materials results in a wide variety of advanced technologies including image display, data storage, light management including negative refraction, and enantioselective catalysis and sensing. Here, we introduce chirality to plasmonic nanostructures by using circularly polarized light as the sole chiral source for the first time. Gold nanocuboids as precursors on a semiconductor were irradiated with circularly polarized light to localize electric fields at specific corners of the cuboids depending on the handedness of light and deposited dielectric moieties as electron oscillation boosters by the localized electric field. Thus, plasmonic nanostructures with high chirality were developed. The present bottom-up method would allow the large-scale and cost-effective fabrication of chiral materials and further applications to functional materials and devices.

41 citations

Journal ArticleDOI
01 Jan 2022-Matter
TL;DR: In this article , the authors provide a comprehensive analysis of the available laboratory exfoliation methods beyond sonication: mechanical, hydrothermal, electrochemical, laser-assisted, and microwave-assisted exfoliations, aiming to bridge the gap between academia and industry for 2D materials production.

22 citations

Journal ArticleDOI
TL;DR: In this paper, the authors summarized recent progress in the fabrication of flexible organic electrochemical transistors and their applications in chemical and biological sensing, and presented the conclusions and remaining challenges in the field of flexible OECT-based sensing.
Abstract: Chemical and biological sensing play important roles in healthcare, environmental science, food-safety tests, and medical applications. Flexible organic electrochemical transistors (OECTs) have shown great promise in the field of chemical and biological sensing, owing to their superior sensitivity, high biocompatibility, low cost, and light weight. Herein, we summarize recent progress in the fabrication of flexible OECTs and their applications in chemical and biological sensing. We start with a brief introduction to the working principle, configuration, and sensing mechanism of the flexible OECT-based sensors. Then, we focus on the fabrication of flexible OECT-based sensors, including material selection and structural engineering of the components in OECTs: the substrate, electrodes, electrolyte, and channel. Particularly, the gate modification is discussed extensively. Then, the applications of OECT-based sensors in chemical and biological sensing are reviewed in detail. Especially, the array-based and integrated OECT sensors are also introduced. Finally, we present the conclusions and remaining challenges in the field of flexible OECT-based sensing. Our timely review will deepen the understanding of the flexible OECT-based sensors and promote the further development of the fast-growing field of flexible sensing.

17 citations

Journal ArticleDOI
TL;DR: In this article, a review summarizes and discusses the recent advances in both the preparation and applications of freestanding Janus nanosheets, including surface reaction, interface reaction, emulsion reaction, self-assembly, and stripping of non-Janus nanomaterials.
Abstract: In the family of Janus nanomaterials, Janus nanosheets possess not only the advantages of Janus nanomaterials, but also the advantages of two-dimensional nanosheets, endowing them with many extraordinary properties. Therefore, Janus nanosheets have great potential in the fields of interfacial engineering, catalysis, and molecular recognition. This review summarizes and discusses the recent advances in both the preparation and applications of freestanding Janus nanosheets. After a short introduction to different types of Janus nanosheets, a variety of methods for preparing freestanding Janus nanosheets are introduced, including the surface reaction, interface reaction, emulsion reaction, self-assembly, and stripping of non-Janus nanosheets, as well as selective grafting of existing Janus nanosheets. Then, the wide applications of Janus nanosheets in the fields of emulsification, catalysis, polymer reinforcement, nanomotors, and molecular recognition are summarized in detail. Finally, a discussion on the remaining challenges and future perspectives in this field is included. This review will not only deepen the understanding of Janus nanosheets, but also benefit the designs and fabrications of extraordinary and multi-functional Janus nanosheets.

16 citations

Journal ArticleDOI
TL;DR: A comprehensive and timely review on surface plasmonic nanostructures can be found in this article, where the authors summarized the principle of surface plasmons and its contribution in the growth, etching, and phase transition of inorganic nanocrystals.

15 citations