Article
Chemistry, Multidisciplinary
Ping Rong, Shiyong Gao, Shuai Ren, Huiqing Lu, Jun Yan, Lin Li, Mingyi Zhang, Yajie Han, Shujie Jiao, Jinzhong Wang
Summary: A freestanding Bi2S3 nanofibrous membrane (NFM) was prepared via a one-step hydrothermal method, showing excellent flexibility and mechanical stability. The NFM can be bent into any desired form and exhibits a fast response time and robust detection performance. It has potential applications in flexible and wearable devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
K. P. Mithun, Shalini Tripathi, Ahin Roy, N. Ravishankar, A. K. Sood
Summary: We investigated carrier relaxation dynamics in semiconducting tellurium nanowires using ultrafast time-resolved terahertz spectroscopy. The relaxation process was found to exhibit bi-exponential decay with two time scales depending on the amount of capping agent on the TeNWs surface. A coupled rate equation model was used to quantitatively understand the relaxation mechanisms and the observed temperature-dependent dynamics. Furthermore, the frequency-dependent THz photoconductivity was modeled using the Boltzmann transport equation, revealing the contributions of short range and Coulomb scattering rates in the relaxation process.
Article
Nanoscience & Nanotechnology
Meng Pei, Xu Zhao, Congxin Xia, Tianxing Wang, Xianqi Dai, Shuyi Wei
Summary: We studied the electronic structure and optoelectronic properties of XSe2/WSi2N4 (X = Mo, W) van der Waals heterostructures (vdWHs) using first-principles calculations. The MoSe2(WSe2)/WSi2N4 vdWHs have semiconductor properties with a direct bandgap of 1.26 (1.16) eV and type-I band alignment, which could be used in light-emitting diodes and quantum-well lasers. The hole carrier mobility of the vdWHs is significantly higher than that of isolated layers, and the WSe2/WSi2N4 vdWH has better carrier mobility overall compared to MoSe2/WSi2N4 vdWH. Moreover, the XSe2/WSi2N4 vdWHs have a wide absorption range and better optical absorption compared to isolated layers. Interlayer coupling, biaxial strain, and external electric fields can adjust the electronic structure and band alignment type of the XSe2/WSi2N4 vdWHs. Our results demonstrate the great potential of XSe2/WSi2N4 vdWHs in optoelectronic devices.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Nanoscience & Nanotechnology
Chan Wook Jang, Dong Hee Shin, Suk-Ho Choi
Summary: The study investigates the improvement of the performance of GR/PSi photodetectors (PDs) by inserting a WS2 interfacial layer between the GR/PSi interface. The insertion of the WS2 interfacial layer enhances the responsivity, detectivity, and external quantum efficiency of the PDs, and reduces the response time. However, a loss in responsivity value is observed after long-term testing.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Quanxin Yang, Tu Lyu, Bohang Nan, Jian Tie, Guiying Xu
Summary: Lead-free SnTe-based materials, achieved through alloying with Mn and doping with BiBr3, demonstrate significantly improved power factor and quality factor, making them promising alternatives to PbTe.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Youngchan Kim, Euihoon Jeong, Minwoong Joe, Changgu Lee
Summary: 2D semiconducting materials offer promising features for electronic device applications, but face challenges such as low charge-carrier mobility. A new synthesis method has been proposed to achieve high performance single crystalline 2D Bi2S3, showing potential for advanced electronic device applications.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Lingling Bai, Yifan Gao, Junhao Peng, Xing Xie, Minru Wen, Huafeng Dong, Xin Zhang, Le Huang, Fugen Wu
Summary: Arsenene in the zigzag direction can achieve near-zero Poisson's ratio, with a smaller Poisson's ratio suitable for precision instruments. It has potential applications in infrared and visible optoelectronic devices.
Article
Chemistry, Inorganic & Nuclear
Damian C. Onwudiwe, Olalekan C. Olatunde, Violet M. Nkwe, Youssef Ben Smida, Hela Ferjani
Summary: Weak redox potential and high recombination of charge carriers are the main limitations for photocatalysts in wastewater treatment. This study reports the synthesis of a heterostructure photocatalyst (g-C3N4/Bi2S3/CuS) with improved charge carrier separation and tuned redox potential for enhanced photocatalysis of methyl orange dye. The synthesized heterostructure showed a synergistic effect, leading to enhanced charge carrier separation and reduced recombination. The g-C3N4/Bi2S3/CuS composite exhibited higher photocatalytic efficiency compared to individual components. The highest efficiency was achieved by g-C3N4/Bi2S3/CuS(20%), which achieved 98% degradation efficiency and a reaction rate constant of 8.08 x 10(-2) min(-1). Radical scavenging experiments revealed significant roles of (OH)-O-center dot, e(-), and h(+) in the degradation process. A charge transfer scheme and reaction mechanism were proposed based on these results.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Energy & Fuels
Ravindra N. Bulakhe, Su Cheol Shin, Jung Bin In, Insik In
Summary: A facile, inexpensive, and template-free strategy was used to synthesize nickel cobaltite with high specific surface area and specific capacities for supercapacitor applications. The study showed excellent cyclic stability and high performance of the synthesized materials.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Multidisciplinary Sciences
Mingliang Li, Jing Zheng, Xiaoge Wang, Runze Yu, Yunteng Wang, Yi Qiu, Xiang Cheng, Guozhi Wang, Gang Chen, Kefeng Xie, Jinyao Tang
Summary: Researchers have successfully designed and synthesized a new organic semiconductor material, AZO-BTBT-8, which utilizes strain engineering to improve the carrier mobility of the material. The photoisomerization of AZO-BTBT-8 induces lattice strain in thin-film devices, leading to exceptional device performance enhancement. Based on this, a large-scale flexible organic field-effect transistor (OFET) device array has been fabricated, achieving high-resolution UV imaging and reversible light response.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Chaoyang Tan, Shiqi Yin, Jiawang Chen, Yuan Lu, Wensen Wei, Haifeng Du, Kailang Liu, Fakun Wang, Tianyou Zhai, Liang Li
Summary: This paper reports a broken-gap vdW heterojunction PtS2/WSe2 with bilateral accumulation region design and a large band offset, showing ultra-high rectification ratio and on/off ratio, as well as excellent photodetection properties.
Article
Chemistry, Physical
Ping-Ping Sun, Devesh R. Kripalani, Lichun Bai, Weijie Chi, Kun Zhou
Summary: Pentadiamond is discovered as a highly efficient electron transport material that can enhance interface carrier extraction, showing excellent photovoltaic performance. With semiconductor properties and outstanding electron transport capability, it has great potential for applications in PSCs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Betul Teymur, Sergiu Levcenco, Hannes Hempel, Eric Bergmann, Jose A. Marquez, Leo Choubrac, Ian G. Hill, Thomas Unold, David B. Mitzi
Summary: Copper barium thioselenostannate (CBTSSe) absorbers utilize low-toxicity and abundant metals, offering low-cost manufacturing, controllable stoichiometry, and tunable band gap. The performance of solution-deposited CBTSSe films is influenced by defects, charge carrier mobility, and lifetime. Surface recombination issues impact efficiency, highlighting the need for improvement in the fabrication process.
Article
Chemistry, Multidisciplinary
Ting-Hsuan Wu, Hao-Yu Cheng, Wei-Chiao Lai, Raman Sankar, Chia-Seng Chang, Kung-Hsuan Lin
Summary: We found that the presence of photocarriers in exfoliated InSe led to shrinkage in the optical bandgap. Furthermore, the carrier recombination rate increased with reduced thickness and was dominated by surface recombination.
Article
Chemistry, Multidisciplinary
Wei Chen, Danhao Wang, Weiyi Wang, Yang Kang, Xin Liu, Shi Fang, Liuan Li, Yuanmin Luo, Kun Liang, Yuying Liu, Dongyang Luo, Muhammad Hunain Memon, Huabin Yu, Wengang Gu, Zhenghui Liu, Wei Hu, Haiding Sun
Summary: This paper reports a novel postepitaxy method: thickness-tunable carbon layer decoration to continuously manipulate the surface band bending of III-nitride semiconductors for the first time. Enabled by the accurate modulation of the thickness of carbon layers, a spectrally distinctive bipolar photoresponse with a controllable polarity-switching-point over a wide spectrum range can be achieved, further demonstrating reprogrammable photoswitching logic gates and secured image transmission system.
ADVANCED MATERIALS
(2023)
Article
Food Science & Technology
Fei Yu, Cong Chen, Shuna Chen, Kaixi Wang, Haitao Huang, Yuanyuan Wu, Puming He, Youying Tu, Bo Li
Summary: During the processing of black tea, the content of organic acids shows different trends in withering and rolling stages, which are regulated by various enzymes. This study provides insights into the dynamic changes and regulatory mechanisms of organic acids in black tea production.
Article
Chemistry, Applied
Cong Chen, Fei Yu, Xinli Wen, Shuna Chen, Kaixi Wang, Feiquan Wang, Jianming Zhang, Yuanyuan Wu, Puming He, Youying Tu, Bo Li
Summary: This study reveals the formation and mechanisms of (E)-2-hexenal during tea processing, and identifies the role of CsHI in this process. Additionally, it shows that abiotic stresses can regulate the proportions of (Z)-3-hexenal and (E)-2-hexenal in torn tea leaves by modulating CsHI expression levels. The findings of this study are important for the development of tea flavor and plant defense against abiotic stresses.
Editorial Material
Ecology
Ming Nie, Wenwen Liu, Steven C. Pennings, Bo Li
Article
Nutrition & Dietetics
Huanqing Zhu, Kaixi Wang, Shuna Chen, Jiaxin Kang, Na Guo, Hongbo Chen, Junsheng Liu, Yuanyuan Wu, Puming He, Youying Tu, Bo Li
Summary: Tea seed saponins can stimulate GIP expression via SGLT1 and TGR5, and have potential effects on improving metabolism and related diseases.
Article
Physics, Applied
Yong Yan, Jie Li, Hengyi Li, Shasha Li, Zhongwei Li, Wei Gao, Yurong Jiang, Xiaohui Song, Congxin Xia, Jingbo Li
Summary: In this study, a high-performance self-powered broadband photodetector was fabricated based on a near-broken-gap GeSe/SnS2/InSe heterostructure. The device exhibited ultrahigh open-circuit voltage, high power-dependent responsivity, and fast response time in the self-powered mode. By utilizing the near-broken band alignment and the high electron mobility of InSe layer, the conversion efficiency of the device was improved. The unipolar hole barrier at the interface also inhibited the Langevin recombination, leading to the enhancement of open-circuit voltage. This work provides an opportunity for the realization of high-sensitivity polarization-sensitive broadband photodetectors.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Tianle Zhang, Jiantao Du, Wenjun Wang, Keming Wu, Shuai Yue, Xinfeng Liu, Wanfu Shen, Chunguang Hu, Minghui Wu, Zhe Qu, Shengxue Yang, Chengbao Jiang
Summary: In this work, the strong in-plane optical anisotropy in two-dimensional vdW antiferromagnet VOCl was systematically studied. The optical brightness, absorption coefficient, and Raman intensity exhibit evident periodic variations with the change of incident polarization, demonstrating the strong in-plane anisotropic optical absorption and phonon properties. In addition, in-situ visualization of in-plane optical reflection anisotropy and the presence of strong in-plane nonlinear optical anisotropy were also observed. These findings will benefit the applications of VOCl in the fields of polarization-dependent electronics and spintronics.
Letter
Multidisciplinary Sciences
Xinxin Wang, Xiangming Xiao, Qiang He, Xi Zhang, Jihua Wu, Bo Li
Review
Biochemistry & Molecular Biology
Shuna Chen, Jiaxin Kang, Huanqing Zhu, Kaixi Wang, Ziyi Han, Leyu Wang, Junsheng Liu, Yuanyuan Wu, Puming He, Youying Tu, Bo Li
Summary: L-theanine is the main amino acid in tea leaves and has both flavor and health benefits. Its immunomodulatory effects, particularly on reducing immunosuppression and improving immunity, have been studied in clinical and epidemiological research. Numerous studies on cells and animals have also shown that theanine plays a role in regulating inflammation, nerve damage, the intestinal tract, and tumors by regulating certain cellular functions.
Review
Biochemistry & Molecular Biology
Hongbo Chen, Fei Yu, Jiaxin Kang, Qiao Li, Hasitha Kalhari Warusawitharana, Bo Li
Summary: The composition and contents of organic acids vary in different types of tea. They play important roles in the metabolism of tea plants, nutrient absorption and growth regulation, as well as the aroma and taste quality of tea. However, the research on organic acids in tea is still limited. This article reviewed the progress made in studying organic acids in tea, including analysis methods, physiological functions, composition and influencing factors, sensory contributions, as well as health benefits like antioxidation and digestion promotion. It aims to provide references for further research on organic acids in tea.
Article
Plant Sciences
Yuanfei Pan, Mu Liu, Alejandro Sosa, Bo Li, Mang Shi, Xiaoyun Pan
Summary: This study investigates the metacommunities of endophytic fungi in the leaves of an invasive plant and finds that the structure of these fungal communities is influenced by multiple spatial scales and different drivers. These findings are important for understanding the global patterns of fungal diversity.
Article
Materials Science, Multidisciplinary
Shuai Liu, Xuwei Cui, Qinghua Zhang, Wanfu Shen, JianTao Du, Ting Lin, Yunkun Wang, Minghui Wu, Lin Gu, Yunan Gao, Chunguang Hu, Luqi Liu, Shengxue Yang, Chengbao Jiang
Summary: This study reports on an interesting low-symmetry 2D material, GaPS4, and investigates its in-plane anisotropic structure, optical, and mechanical properties. The experimental results show that GaPS4 is sensitive to crystalline orientation and linear dichroism. An interesting pressurized bubble method is used to verify the anisotropic mechanical properties of GaPS4, and saddle-like bubble devices of GaPS4 are successfully fabricated.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Computer Science, Interdisciplinary Applications
Xian Song, Bo Li, Pengyu Wang, Yizhao Zhou, Jian Wang, Yaqun Wang, Chengbing Fang, Meiyuan Jin
Summary: This article fabricated a flexible piezoelectric sensor to gather data for the pulse-taking procedure and used it to recognize whether a woman is pregnant. The pulse signal was processed by GoogleNet and achieved a 90.48% correction rate, which solidified the objectivity of pulse diagnosis and raised the digitalization level of TCM.
ENGINEERING REPORTS
(2023)
Article
Remote Sensing
Xi Zhang, Xiangming Xiao, Xinxin Wang, Xiao Xu, Shiyun Qiu, Lianghao Pan, Jun Ma, Ruiting Ju, Jihua Wu, Bo Li
Summary: Biological invasions, especially by Spartina alterniflora, are significantly impacting the structure and functions of coastal ecosystems in China. Urgent efforts to control the spread of this invasive species are hindered by the lack of time-series data. By using satellite images, this study successfully generated annual maps of Spartina saltmarshes from 1985 to 2020, revealing a continuous expansion of Spartina along the coast. The invasion history and frequency of changes were found to be influenced by latitude, with low latitudes experiencing longer and more frequent invasions. Human interventions have contributed to the decline in certain areas, but natural spread remains the primary driver of its extensive invasion.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2023)
Article
Instruments & Instrumentation
W. Liu, Z. Zhang, J. Wu, T. Ma, Y. Zhang, Y. M. Hu, Y. Q. Zhang, Y. Y. Huang, H. X. Jiang, X. K. Jiang, D. Y. Chen
Summary: This article focuses on the pre-launch characterization of the HXI spectrometer, including detection efficiency, energy resolution, and energy to ADC channel relationship. The characterization results show that the HXI spectrometer meets the performance requirements and is capable of performing on-orbit observation activities.
JOURNAL OF INSTRUMENTATION
(2022)
Article
Materials Science, Multidisciplinary
Ruixue Bai, Tao Xiong, Jinshu Zhou, Yue-Yang Liu, Wanfu Shen, Chunguang Hu, Faguang Yan, Kaiyou Wang, Dahai Wei, Jingbo Li, Juehan Yang, Zhongming Wei
Summary: This article introduces photodetectors based on quasi-1D ZrGeTe4 nanoribbons, featuring low dark current and wideband polarization detection. These photodetectors can operate without bias voltage and demonstrate polarization sensitivity from VIS to NIR regions.
